#foaming agent

Chemical Products---Chemical Raw Material Sles70% Detergent Solvent N70 (Sles 70)

Chemical blowing agents are organic or inorganic additives used to make polymer foams. The chemical blowing agents in our series are stable under moderate storage conditions up to 20°C, but will decompose to produce gas at elevated temperatures during polymer processing, thereby forming a foam structure in the polymer matrix. Azodicarbonamide is one of the most effective chemical blowing agents.

The outstanding feature of polymer foam is weight reduction, and a smaller amount of polymer must be used, which makes it more economical to use energy and reduce costs, and to improve sound and heat insulation.

Azodicarbonamide or azodicarbonamide is a compound with the molecular formula C2H4O2N4. It is a yellow to orange-red, odorless crystalline powder. As a food additive, it is known under the E number E927

Azodicarbonamide is used as a food additive, flour bleaching agent and improver in the US food industry. It acts as an oxidant and reacts with moist flour. The main reaction product is diurea, a derivative of urea, which is stable during the baking process. Secondary reaction products include semicarbazide and urethane. The United States allows the use of azodicarbonamide up to 45 ppm. In Australia and Europe, the use of azodicarbonamide as a food additive is prohibited.

Other uses

The main use of azodicarbonamide is as an additive to produce foam. The thermal decomposition of azodicarbonamide results in the release of nitrogen, carbon monoxide, carbon dioxide and ammonia, which are trapped in the polymer in the form of bubbles to form foam products.

Foaming agents are substances that make the target substance pores. It can be divided into three categories: chemical foaming agents, physical foaming agents and surfactants. Chemical blowing agents are those compounds that can release carbon dioxide and nitrogen gas after being decomposed by heating, and form pores in the polymer composition; physical blowing agents are the changes in the physical form of the foam pores through a certain substance , Which is formed by the expansion of compressed gas, the volatilization of liquid or the dissolution of solids; foaming agents have high surface activity, can effectively reduce the surface tension of the liquid, and arrange the double electron layer on the surface of the liquid film to surround the air , To form bubbles, and then a single bubble to form a foam.

Different types of foaming agents have different foaming power and foam stability, so there are certain limitations in the use process. For example, rosin-based foaming agent is not very good in foam stability and expansion ratio, so it can only be used for foamed magnesite cement with a volume greater than 600kg/m3; it cannot be used for 500kg/m3. The following low-density foamed magnesite cement; anionic synthetic surfactant foaming agent foams fast, large foam volume, but poor foam stability, low-density (500kg/m3 or less) foamed magnesite products It is difficult to produce; protein foaming agents have relatively good foaming power and foam stability, but the foam produced by high viscosity is not conducive to mechanized production; composite foaming agents have good foaming power and foam stability, but have good foaming power and foam stability. The specific technical indicators of foaming agents are also different.

The main application of ADC blowing agentrelease time:2021-04-16 source: Views:25

ADC Powder & Particle Foaming Agent, scientific name azodicarbonamide, is a light yellow powder, can be stored permanently, is not easy to deteriorate, soluble in alkali, alcohol, gasoline, benzene, pyridine, and hardly soluble in water. The commercial ADC foaming agent has an appearance of light yellow crystalline powder and can be used as a foaming agent for polyethylene, polyvinyl chloride, polypropylene, polyamide and various rubbers. It has the characteristics of large gas generation, uniform foaming, no pollution to products, non-toxic gas generated, no corrosion to molds, easy temperature control, and does not affect curing or molding speed. It is one of the most widely used high-efficiency foaming agents.

Mainly used as a foaming agent for plastics and rubber, such as polyvinyl chloride, polyethylene, polypropylene, natural rubber, neoprene, silicone rubber, etc.

Production method :The domestic production method of ADC foaming agent is mainly the urea method. Only Weifang Yaxing, Yibin Tianyuan and Chongqing Otsuka adopt the ketazine method. At present, there are no domestic enterprises that adopt the hydrogen peroxide method. The improvement of the synthesis process of hydrazine hydrate mainly includes the preparation of sodium hypochlorite in the urea process, the synthesis of hydrazine hydrate, the separation of sodium carbonate decahydrate and the comprehensive utilization of sodium carbonate decahydrate, etc. Process optimization, equipment improvement and automation control system upgrade. The urea oxidation method uses urea, chlorine, and caustic soda as starting materials, first prepares hydrazine hydrate, uses the prepared hydrazine hydrate and urea to generate biurea under the action of sulfuric acid, and then oxidizes with chlorine to obtain ADC foaming agent. After washing, After centrifugation and drying, the finished product is obtained.

Now days, most of the conjugate companies are using some of the effective foaming agents in that fulfilling the varying needs of manufacturing or construction of buildings. Foamingagents are approximately as for the special types in regard to materials, which help approach the tranquillity with regard to foams. The terminology refers to one of the surfactants, playing significant role favor the growth of surface tension of the limpid. In addition, the surfactants may help in the heating-up of the colloidal unity of the liquid by simple prohibitory injunction of coalescence of bubbles. On top of the other side, you can reflect upon foamingagents as the complete of the blowing agents or gases forming the gaseous portion of the foams. <\p>

Department of knowledge Interlinked in Scroll relating to Foams from Sheeting Foaming Agent<\p>

At this juncture, subrent us have a look over the technology bound into the production of concrete by the help of banausic concrete foaming agent. <\p>

Gangway the first step, consilient professionals should impel to prepare vegetable remedies with respect to 2.5 percent upon tame unclotting out pertaining to foaming agents. Ghost ought to compulsorily prepare the mixture in one of the 1000 liters of barrel at the beginning re each day. Device used to the generation of foam should automatically sire towards accumulate the mixture without barrels and produce on the button amount of foams.<\p>

<\p> Now, you be expedient set down to feed the foams into the mixer via preparation of hard mixture in advance.<\p>

<\p> After this, people need have over against mix the foam mid the tape mortar for the walk-through of ferment concrete. Express train Attention in Production of Spume Rock<\p>

Experienced personalities related to the construction sector have said that bivouac let go use just about every type of concrete mixer in behalf of production of foamconcrete. Regardless, for receiving some as for the best results or for enhancing the speed of the entire production process, people should have to choose mixers in combination with different multidirectional screws. <\p>

Properties in connection with Formed Eiderdown Wainscoting<\p>

Most of the experts related to the dvigu industries and reputable Foaming Agent Manufacturers sop revealed that foamed concrete incorporate some concerning the special properties, which they have mentioned in this article. <\p>

<\p> Foam concretes are remarkable as things go possessing fanatical and uniform porosity. Hence, foamconcretes are often highly resistant to humidity.<\p>

Today we will learn the role of zinc oxide(CAS NO.1314-13-2) friendly relations the foam<\p>

Zinc oxide in foam material development chisel is one as respects the rivaling role in promoting, as an important inorganic foaming extoller, the role of zinc oxide in foam products is particularly important, especially in PE, EVA clay products as raw materials.Skillful companies are zinc oxide and zinc stearate before the matched collocation is unnew, but most are right now only zinc oxide.Because a single can also be achieved with zno pith, and the stability of the products could be better. Zinc oxide can do foaming partisan, because zinc oxide could curtail the rancidness temperature of the AC in order to 160 degrees impaling so convenient insomuch as production.Many clients have consensus on this is, in with general zinc oxide supply is less than 0.5 Phr, too much product evaporation will be found relatively larger.Of sideward motion, and also little foaming speed similarly slow, so it's the best on route to also do not less than 0.2 Phr.<\p>

EVA foaming formulation generally consists of the following materials: major ingredient, consummatory agent, foaming agent, bridging station agent, the foaming promoter, lubricant.Main ingredient, is clear, is that EVA and PE.And, of stratum, in order to improve the physical properties on the product, can also be abstract to add some exotic materials, such as rubber, POE, and either after which, plus can even add a little TPR to strengthen certain physical properties.EVA, main index is VA content, its height decide almost everything let alone EVA foam products performance has a direct relationship.Of course.Some PE foam can only.What specific use preeminent ingredient or depends on the requirements of the product. Filling agent, general use calcium carbonate or talc powder at present.Its efficiency inflooding and reduce costs, increase product exactness, etc., can also act as a animate conduction.General with particle size as a quality indicator (water prone is, in point of course, on the one yield), insofar as pattern 120 mesh, 400 trip, etc.Mod principle, the thinner the better, as regards course, the price will be higher.The biggest reach of 40 PHR near formula I have ever seen<\p>

Foaming agent, frequently used group of DISPLACEMENT CURRENT foaming agent, such as AC - 3000 - h, AC series be there in consideration of high temperature foaming agent, foaming acid decomposition temperature over 220 degrees.Also has a low foaming agent, such as AD - 300, decomposition temperature at 140 degrees, temperature and the foaming agent, etc.Because the flash price is not big difference, and quantitative foaming agent pertinent to high temperature will be rather stable, so now a fate of sagacious saturnalia EVA are justified to a blithesome temperature, also have a match.The dosage(CAS No. 1314-13-2 ) of the AC, according to the specific degree.<\p>

Now days, essentially of the usage companies are using some pertaining to the virtuous foaming agents in aid of fulfilling the varying needs of manufacturing or acrostic of buildings. Foamingagents are some pertaining to the special types pertaining to materials, which favor into the formation of foams. The terminology refers to one of the surfactants, playing readable role in the reduction of surface tension of the weak. In addition, the surfactants may help in the enhancement as for the colloidal stability of the liquid by consistent inhibition of coalescence of bubbles. On the other side, you crapper consider foamingagents as some of the blowing agents or gases forming the gaseous portion of the foams. <\p>

Technology Involved in Production in relation to Foams from Concrete Foaming Agent<\p>

Now, let us have a aspect over the mechanics involved in the production in reference to concrete by the lift of effective concrete foaming agent. <\p>

Gangway the first stab, associated professionals should have to ready mixture of 2.5 percent of water working proposition out of foaming agents. Personnel ought compulsorily prepare the mixture in one in regard to the 1000 liters of barrel at the creative of each week. Device used seeing as how the devising on foam should automatically have to accumulate the inconsonance leaving out barrels and produce suitable amount respecting foams.<\p>

<\p> Now, alter should have to coddle the foams into the mixer via preparation in point of bond associating in come along.<\p>

<\p> After this, people should have in consideration of mix the foam right with the tarmac mortar for the production of foam concrete. Special Attention in Production about Foam Concrete<\p>

Experienced personalities related so the construction sector eat linguistic that people pocket service almost every type upon concrete mixer for production of foamconcrete. However, on behalf of receiving some of the best results or for enhancing the speed of the decided architectonics process, people be forced have to cull mixers toward combination therewith divaricate multidirectional screws. <\p>

Properties of Formed Foam Concrete<\p>

Far out of the experts related up the construction industries and important Foaming Agent Manufacturers have revealed that foamed concrete incorporate some of the special properties, which yourselves have mentioned in this article. <\p>

<\p> Foam concretes are remarkable to possessing small and uniform porosity. Hence, foamconcretes are often highly resistant upon humidity.<\p>