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Dawn SWT, a subsidiary of the Dawn Group, is a nationally recognized high-tech enterprise and a Shandong Province gazelle enterprise. It possesses independent intellectual property rights covering nonwoven equipment R&D and production, nonwoven fabric processes, formulations, and final product applications.

It independently developed and put into operation China's first parallel bicomponent nonwoven fabric production line, possessing unique development technology and complete solutions for parallel bicomponent nonwoven fabric production. The following will introduce the characteristics of Dawn SWT's nonwoven fabric series and explain why Dawn SWT is a reliable nonwoven fabric supplier.

About Dawn SWT

Dawn SWT, relying on the Longkou (Dawn) New Materials Science and Technology Industrial Park, has planned and constructed a high-end nonwoven fabric production base, with a first-phase capacity of 50,000 tons/year. We can provide customers with nonwoven fabric technical support, nonwoven fabric equipment, and nonwoven fabric materials to empower your project development.

We offer two main nonwoven fabric lines: Parallel Bi-Component Aqua Cotton Nonwoven Fabric and Sheath-Core Bi-Component New Silky Nonwoven Fabric. We can also customize solutions to meet your specific needs based on different raw material ratios and component proportions.

Parallel Bi-Component Aqua Cotton Nonwoven Fabric

1. New Aqua Cotton Nonwoven Fabric

Dawn SWT's new aqua cotton non-woven fabric has a uniform surface and unique style. Its fibers are in large spiral curls, with a fluffy texture, soft touch, excellent drapability, and unique skin-friendliness. It has stable processing performance, comparable to traditional spunbond fabrics. Mainly used for the outer waistband of pull-up pants, it can fit and wrap spandex yarn better, effectively improving wearing comfort.

2. New Aqua Cotton Super HO White Bisco S/S Flap

This non-woven fabric features positive pressure stretching and the addition of super water-repellent masterbatch, achieving a hydrostatic pressure of 80mm water column. This meets the requirements for preventing menstrual blood leakage in menstrual pants and urine leakage in NB-size baby diapers.

3. 3D Aqua Cotton Nonwoven Fabric

This 3D Aqua cotton fabric features an even surface with tiny spiral curls of fibers, offering a soft, plush texture that is gentle, non-irritating, and more skin-friendly. Compared to hot-air nonwoven fabrics, its continuous filaments eliminate potential irritation from short fiber ends, while the disordered, uniform web formation avoids the friction-induced irritation that can arise from carding short fibers in varying directions and degrees.

Sheath-Core Bi-Component New Silky Nonwoven Fabric

This nonwoven fabric boasts high strength and an even texture, offering excellent drapability, high breathability, and outstanding skin-friendliness. It features strong and stable bonding with hot-air nonwoven fabrics. Compared to other similar materials, it has a smoother, finer hand feel and exceptional fluffiness.

Soft Masterbatch

Dawn-SWT’s Soft Masterbatch CF528 is a mixture of fatty acid ester derivatives and olefin copolymers. It can further enhance fiber curvature, achieving a relatively fluffy effect. At the same time, it improves the friction coefficient of fibers or nonwoven fabrics, achieving a fluffy and soft cotton-like effect. It is particularly suitable for surface 3D perforation, providing a good cotton-like texture and excellent 3D dimensional retention. 

Partner with Us

After 30+ years of development, Dawn has established a mature international trading system. Dawn’s nonwoven fabrics and soft masterbatch have been exported to over 30 countries and regions, including Japan, South Korea, and Germany. The company has established partnerships with a number of industry-leading enterprises.

As a professional nonwoven fabric manufacturer, we have a professional technical team and sales team to solve pre-sales and after-sales issues. 

Cables are critical components in modern industrial operations, supporting the transmission of power, data communications, and the operation of equipment. Insulation materials, as the core protective layer of cables, are directly related to operational safety, efficiency, and the service life of the cables.

When selecting cable insulation materials, factors such as heat resistance, dielectric strength, environmental tolerance, and flexibility must be comprehensively considered. This article analyzes the characteristics and industrial application scenarios of 5 common cable insulation materials, providing practical references for engineers, project managers, and technical decision makers.

Top 5 Cable Insulation Materials

1. PVC

PVC is one of the most commonly used insulation materials due to its low cost, adaptability, and balanced overall performance.

In the industrial sector, PVC is widely used in building wiring, low-voltage automotive wiring harnesses, and internal cables for consumer electronics.

However, PVC can release hydrogen chloride at high temperatures, causing corrosion problems. The presence of chlorine and plasticizers also complicates recycling. Therefore, it is generally suitable for low- to medium-voltage applications and non-extreme environments.

2. XLPE

XLPE is a thermoset material with excellent heat resistance, mechanical strength, and electrical insulation properties.

XLPE is suitable for high-voltage power transmission systems, including underground and submarine cable installations, as well as in the renewable energy sector.

Compared to PVC, XLPE offers higher temperature resistance and dielectric properties, but at a higher cost.

3. PE

PE insulation materials include LDPE and HDPE, each with unique advantages. LDPE offers greater flexibility and a lower dielectric constant, while HDPE provides higher tensile strength and stiffness.

PE is widely used in telecommunications applications, such as fiber optic and coaxial cables, to ensure signal transmission quality. It is also used in low-voltage power distribution systems for residential and light industrial applications.

However, PE is susceptible to environmental stress cracking and has poor flame retardancy.

4. Silicone Rubber

Silicone rubber insulation material offers exceptional resistance to heat, oxidation, ozone, and UV rays.

Silicone rubber is primarily used in high-temperature environments, such as aerospace, industrial heating systems, and medical devices. Its stability under thermal cycling and extreme temperatures is unmatched.

Although silicone rubber has lower mechanical strength and a higher cost, it is irreplaceable in specialized high-temperature applications.

5. TPU

TPU insulation material combines mechanical toughness and flexibility with oil and chemical resistance.

TPU is commonly used in cables in robotics, automation systems, and industrial machinery that are subject to constant movement, friction, or oil exposure. It is also used in medical devices, automotive wiring harnesses, and portable electronics.

Although TPU is more expensive than PVC and less heat-resistant than silicone rubber, it is suitable for highly dynamic applications.

Conclusion

Choosing the right cable insulation material impacts safety, performance, and cost in industrial applications. From PVC to TPU, each material offers unique advantages for specific environments and operational requirements.

Material selection requires a comprehensive balance of factors such as temperature range, dielectric strength, flexibility, and environmental resistance. By gaining a deeper understanding of these five materials and their applications, professionals can make informed decisions.

XLPO and XLPE are two common cable insulation materials. Although related, XLPE and XLPO have different chemical structures, resulting in distinct properties. Choosing the wrong material for a specific application can lead to premature cable failure, safety hazards, and costly downtime.

This article provides a detailed comparison of these two cable insulation materials to help you make the right choice.

Understanding the Basics: Defining XLPE and XLPO

What is XLPE?​

XLPE is a thermoset material made by strategically cross-linking the long chains of standard polyethylene (PE). 

What is XLPO?​

XLPO represents a broader class of materials. The name cross-linked polyolefin is a more general term, where the base polymer is a polyolefin elastomer (POE) or a tailored polyolefin blend, rather than standard polyethylene.

The Core Difference Between XLPE and XLPO

1. Flexibility and Mechanical Properties

XLPE is a tough and rigid material. It has high tensile strength and excellent resistance to cuts and abrasions. This makes it ideal for cable installations that need protection from crushing or damage from sharp objects.

XLPO is highly flexible and offers excellent resistance to repeated bending, torsion, and compression. It is suitable for applications with continuous flexing, such as automated machinery, robotic arms, and cable chains. Its elastomeric properties enable it to absorb mechanical stress without permanent deformation or cracking.

​​2. Thermal Performance and Temperature Ratings​

XLPE has a long-term operating temperature of up to 90°C and maintains its elasticity at 130°C. It exhibits excellent long-term heat aging properties, meaning it can maintain its performance for decades at its rated temperature.

XLPO exhibits excellent stability up to 160°C and exhibits relatively superior heat resistance. When exposed to prolonged thermal cycling, it shows outstanding resistance to thermal cracking and embrittlement.

3. Chemical and Environmental Resistance​

XLPE exhibits excellent resistance to many chemicals, including acids, bases, and alcohols. However, it is susceptible to swelling and degradation by certain concentrated acids and non-polar solvents (e.g., hydrocarbons, gasoline).

XLPO is often formulated for enhanced chemical resistance and offers improved resistance to environmental stress cracking.

4. Flame Retardancy and Safety Standards​

XLPE has relatively weak flame-retardant properties and may produce more smoke and harmful gases when burned.

XLPO has excellent halogen-free flame retardancy, low smoke emission, and low toxicity and irritation.

How to Choose the Right Material

XLPE is widely used in power cables, instrument cables, and other fields, suitable for static, high voltage, and general applications.

XLPO is often used in scenarios that require high flexibility and weather resistance, and is suitable for demanding, dynamic and harsh environment applications.

FAQ

Q1: Can XLPO directly replace XLPE in all applications?

A: No. While XLPO generally offers superior performance, it is not a universal replacement. For simple fixed-installation power cables, using XLPO will increase production costs.

Q2: Why is XLPO generally more expensive than XLPE?

A: The cost difference stems from the raw materials. The POE base resin used in XLPO is significantly more expensive than the HDPE used in XLPE.

Conclusion

XLPE is suitable for static, high-voltage, and general-purpose insulation applications. It is a reliable and cost-effective solution for applications requiring excellent electrical performance and mechanical toughness in fixed installations.

XLPO is suitable for dynamic, high-stress environments. Its exceptional flexibility, high-temperature performance, and chemical resistance make it indispensable in automation, harsh industrial environments, and safety-critical LSZH applications.

Dawn Group specializes in producing high-quality XLPE insulation materials. Click here to view Dawn's complete line of cable insulation materials.

Is PETG stronger than PLA? The short answer is yes, but the complete answer depends on a variety of factors, including tensile strength, impact resistance, thermal stability, and chemical resistance.

In this article, we'll break down the key differences between PETG and PLA to give you a better understanding of how each performs.

Understanding PLA and PETG

What is PLA?​

PLA is a biodegradable thermoplastic derived from renewable resources such as corn starch or sugar cane.

What is PETG?

PETG is a thermoplastic polyester that offers excellent chemical resistance, durability, and moldability. 

Strength Comparison: PETG vs. PLA

There are many mechanical properties we need to consider when evaluating material strength. PETG outperforms PLA in almost all metrics that are critical to industrial applications.

Tensile strength tests show that PETG has a significantly higher tensile strength (50-60MPa) than PLA (30-50MPa), which means that PETG can withstand greater tension without breaking.

The difference in their impact resistance is even more obvious. PLA is prone to breaking when suddenly stressed due to its brittleness, while PETG's molecular structure allows it to bend and absorb impact without breaking.

In addition, PLA has weak interlayer bonding and is prone to delamination when stressed, while PETG has a stronger interlayer bond and a more reliable finished product.

Heat resistance is one of the most obvious differences. PLA begins to soften at 50-60°C, while PETG can still maintain its structural integrity at 70-80°C.

This table clearly shows that PETG excels in almost every strength-related metric. While PLA may be more suitable for beginners, PETG offers the mechanical properties required for professional and industrial applications.

Conclusion

While PLA performs well in prototyping and degradable applications, PETG excels in strength, durability, and heat resistance.

For industrial-grade performance needs, Dawn PETG is the first choice. 

Dawn Group develops high-performance PETG materials specifically for industrial applications, with the following advantages:

No Bisphenol A, Certified by FDA

The Advanced Commercial PCTG Producer in China

With Independent Intellectual Property Rights and 7 Patents

Stable Performance, High Transparency, Temperature Resistance from 70°C to 85°C

Hydrogenated nitrile rubber (HNBR) exhibits excellent heat resistance, oil resistance, and mechanical strength, and is widely utilized in various industries, including automotive, petrochemical, aerospace, and others.

Choosing a reliable HNBR supplier is not only related to product quality, but also directly affects production efficiency and cost control. This article will introduce the core factors for evaluating HNBR suppliers in detail, and focus on Dawn HNBR.

Why Supplier Selection Matters​

Poor-quality HNBR may lead to premature failure of seals, equipment downtime, and even safety accidents. Excellent suppliers can not only provide products with stable performance, but also provide full guarantees in terms of technical support and delivery efficiency. Therefore, it is crucial to conduct a comprehensive evaluation before purchasing.

Key Factors to Consider When Choosing an HNBR Supplier​

Quality & Certification​

High-quality HNBR suppliers usually hold ISO 9001 quality management system certification and comply with industry standards such as ASTM D2000. For example, Dawn HNBR undergoes rigorous laboratory testing, including key indicators such as tensile strength and compression set, to ensure the consistency of each batch of products.

Material Grades & Customization​

Different application scenarios have different performance requirements for HNBR. Suppliers should be able to provide a full range of products from standard to high-performance grades and support customized formulations. For example, special additives may be required to enhance heat resistance in extremely high temperature environments.

Supply Chain & Lead Times​

Stable production capacity and sufficient inventory are the basis for on-time delivery. A global logistics network can also help shorten transportation time and reduce the risk of supply chain disruptions.

Pricing & Cost Efficiency​

Price is important, but material life and maintenance costs must be considered. Bulk purchases or long-term agreements often yield better terms.

Technical Support & Customer Service

Professional suppliers will assist customers in selecting the most suitable material model and provide technical documentation and on-site support. The response speed of after-sales service also affects the efficiency of problem-solving.

Sustainability & Ethical Sourcing​

As environmental regulations become increasingly stringent, whether suppliers comply with standards such as REACH and RoHS, and whether they adopt green production processes, have also become important considerations.

Spotlight on Dawn HNBR – A Trusted Supplier​

Dawn Group is committed to the research, development, production, sales, and application services of HNBR series products. At the same time, it owns high-end rubber compound production lines for NBR and HNBR, and customizes and processes various rubber compound products.

In terms of technology research and development, it has jointly developed HNBR technology with Beijing University of Chemical Technology. It can independently develop a highly active hydrogenation catalyst system and achieve industrial-scale production with a large-scale amplification, ranking at the global leading level. It also has the capabilities to develop a complete set of industrial process package technology for HNBR and construct production devices. 

In terms of application research, it has the basic research capabilities for HNBR applications, equipped with an HNBR compound production line and subsequent compound application research. 

In terms of production capacity, it has built its own HNBR production device with a Phase-I production capacity of 3,000 tons per year, and plans to increase it to 5,000 tons per year in 2025. 

In terms of product performance, it shows excellent compression-set performance, high tensile strength, and good comprehensive performance in high-end sealing, synchronous belt, oil-field equipment, and other fields.

As an industry-leading HNBR manufacturer, Dawn HNBR has won recognition from global customers for its excellent product quality and flexible services.

Conclusion​

Choosing an HNBR supplier is a decision that requires a comprehensive trade-off. Through the evaluation framework provided in this article, combined with the understanding of high-quality companies such as Dawn HNBR, buyers can more efficiently lock in partners that meet their needs.

Hydrogenated nitrile rubber (HNBR) is a high-performance synthetic rubber with excellent heat resistance, oil resistance, and mechanical strength. It is widely used in the automotive, petrochemical, and industrial sealing fields.

However, the effects of different chemicals on HNBR vary significantly, and correctly evaluating its chemical resistance is crucial for material selection.

This article will systematically analyze the performance of HNBR in various chemical media and explore the precautions in its practical application.

Analysis of Chemical Resistance of HNBR

HNBR shows excellent tolerance to most hydrocarbon oils (such as gasoline, diesel, and lubricating oil), and its molecular structure can effectively resist the penetration and swelling of oil molecules. In water and steam environments, HNBR is particularly stable, and almost no performance degradation occurs.

For weak acid and weak base media (such as diluted sulfuric acid or sodium hydroxide solution), HNBR can maintain good sealing performance. However, as the acid concentration increases or the temperature exceeds 120°C, the material will show obvious hardening or cracking.

In terms of solvent resistance, HNBR exhibits strong resistance to aliphatic solvents (such as n-hexane) but poor resistance to aromatic solvents (such as benzene and toluene) and chlorinated solvents (such as chloroform). Long-term contact may cause excessive swelling. Ketone and ester solvents (such as acetone and ethyl acetate) can also cause irreversible damage to HNBR.

Limitations of HNBR Chemical Resistance​

Despite its many advantages, HNBR has some limitations in its chemical resistance.

It degrades violently when exposed to strong oxidizing acids such as concentrated nitric acid. Similarly, high concentrations of potassium hydroxide solutions at high temperatures can cause its molecular chains to break.

Temperature is a key factor affecting the chemical stability of HNBR. Above 150°C, HNBR will irreversibly harden even in a compatible oil medium. At low temperatures below -40°C, HNBR loses its elasticity, resulting in seal failure.

Conclusion & Recommendations

HNBR is particularly suitable for sealing applications that require oil and heat resistance. In typical scenarios such as automotive fuel systems and petroleum equipment, it has excellent comprehensive performance.

However, in strong acid, strong alkali or polar solvent environments, more corrosion-resistant materials such as fluororubber or PTFE should be considered. For extreme working conditions that require both high temperature resistance and chemical resistance, more expensive perfluoroether rubber (FFKM) may be required.

In engineering practice, it is recommended to verify the applicability of HNBR through actual working condition simulation tests.

The packaging industry is undergoing a transformation as companies demand durable, sustainable, and cost-effective materials. PCTG, as a high-performance thermoplastic copolyester, is gradually replacing traditional plastics in food packaging, cosmetics, medicine, and industrial fields.

This article will deeply analyze the characteristics of PCTG and its comparison with PET/PVC, five core competitive advantages, main application scenarios, environmental protection and cost-effectiveness, and future technology development trends.

What is PCTG?​

PCTG is a high-performance polyester material made by the copolymerization of CHDM and ethylene glycol. Although it belongs to the same polyester family as PET, the special molecular structure gives it better performance.

PCTG has optical transparency and light transmittance close to that of glass, which is suitable for high-end packaging; its excellent impact resistance is more than 50% higher than PET's anti-fragmentation performance; it also has excellent chemical corrosion resistance and can withstand acids, alkalis, oils, and alcohols. The material has passed the international food contact standards certification, such as FDA and EU, and is a Class 1 recyclable plastic.

Why PCTG Outperforms Traditional Plastics in Packaging​

Superior Clarity & Aesthetic Appeal​

The light transmittance of PCTG is as high as 92-95%, and it will not have the common atomization phenomenon of PET after long-term use. If PCTG is used to produce cosmetic packaging, it can significantly improve the appearance of the product and increase its appeal.

Enhanced Durability & Impact Resistance​

PCTG can still maintain good toughness at -20℃. Comparative tests show that the breakage rate of PET bottles in a 1-meter drop test is 35%, while the breakage rate of PCTG bottles is less than 5%, which reduces transportation losses by 30%.

Chemical & Heat Resistance​

PCTG can withstand hot filling processes below 85°C, remain stable in the pH range of 2-12, and resist corrosion from organic solvents.

Eco-Friendlier Than Traditional Plastics​

Compared with PVC, PCTG can reduce carbon footprint by 60% and can be recycled 5-7 times while maintaining stable performance. This material fully complies with the latest standards of EU REACH regulations and is the preferred material for green packaging.

Cost-Effectiveness in the Long Run​

Although the raw material cost is 15-20% higher than PET, the actual cost of use can be reduced by 10-15% by taking into account the reduced packaging breakage rate and recycling value.

Challenges & Considerations​

The price of PCTG material fluctuates greatly due to the supply of CHDM. Special injection molding equipment is required for processing, and the mold temperature requirements are relatively high.

Future of PCTG in Sustainable Packaging​

In the future, PCTG technology will develop in three main directions:

🔋 Bio-based PCTG R&D 🔄 Chemical recycling technology breakthrough 📉 Production cost optimization

Conclusion​

PCTG is becoming the best choice to replace traditional plastics due to its comprehensive performance advantages. It is recommended that enterprises give priority to using PCTG packaging for high-value products.