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About usThe company is headquartered in Dongguan City, Guangdong Province, and has "Xinhan Rubber Technology (Shenzhen) Co., Ltd." ...
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ProductRubber processing aids Accelerator Comprehensive accelerator Antioxidant EVA processing aid Zinc oxideCurrently mainly sales of rubber and plastics: processing aids, tackifying resins, accelerators, antioxidants, anti-yellowing agents, antioxidants, active agents...
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新闻资讯
Application skills of natural rubber in EVA foam bottom
EVA, or ethylene-vinyl acetate copolymer, is currently a common material used in shoe soles and uppers in shoe processing companies. EVA foam sole has good moisture absorption, heat resistance, abrasion resistance, weather resistance, and oil resistance, but it is easy to slip when walking in wet ground, and the sole is hard under low temperature conditions. This is caused by its own material defects. With the continuous development and advancement of rubber and plastic combined technology, the use of natural rubber in EVA soles can significantly improve the easy slippage and hardening of EVA soles at low temperatures, and can also improve the puncture resistance of rubber soles. 1. Control the amount of natural rubber Reasonable use of natural rubber in EVA soles can significantly improve the overall performance of the soles, but in actual production, the amount of natural rubber is not the better. It is understood that the foaming efficiency of EVA foam soles is closely related to the amount of natural rubber. The foaming rate continues to decrease with the increase of the amount of natural rubber. When the amount of natural rubber increases, the melt viscosity of the blended material 2LLYY0313-SJ will increase, which in turn causes The problem of difficulty in degassing and uneven foaming of foamed materials, the shrinkage of the finished EVA foam bottom is significantly increased. Under normal circumstances, in the production of EVA-natural rubber foamed soles, the amount of natural rubber should not exceed 20 parts to ensure uniform foaming of EVA foamed soles and reduce the shrinkage of the finished product. 2. EVA-natural rubber foam sole compounding agent types Using a small amount of natural rubber in the EVA foam bottom can significantly improve the elasticity and elongation of the foam bottom, and the comfort of the foam bottom is significantly improved. When using EVA-natural rubber blending materials to prepare foam bottoms, when rubber products manufacturers choose peroxides such as DCP for vulcanization, the physical and mechanical properties of the blending materials are better; choosing the foaming agent AC foam can better coordinate the vulcanization speed and the hair The relationship between the foam speed, thereby further improving the foaming efficiency and foaming uniformity of the foamed rubber sole. The combination of rubber and plastic materials has better performance and lower cost, and is currently widely used. The use of a small amount of natural rubber in the EVA foam sole can significantly improve the overall performance of the sole. Butadiene rubber, styrene butadiene rubber, etc. can also be used in the foam sole formulation with EVA as the main material. In actual production, rubber product manufacturers not only need to control the amount of natural rubber and compounding agents in the EVA foam bottom formula, but also need to reasonably control the vulcanization process and foaming process of the sole according to the processing properties of the rubber and EVA materials. With regard to the production and processing of EVA-natural rubber foamed soles, the editor has the opportunity to continue discussing with you.
2021-11-24
What is the difference between rubber foam and EVA foam
1. The two definitions are different Rubber foaming: As the name suggests, this foaming method uses pure natural rubber as the main material, then adds some other auxiliary materials, adds specific foaming agents, and obtains the corresponding product after a certain process. EVA: This is a raw material produced by the copolymerization of ethylene (E) and vinyl acetate (VA). Its specific molecular formula is (C2H4)x.(C4H6O2)y, which is solid at room temperature, but after high temperature heating It will become a liquid with a certain viscosity. 2. Different advantages Rubber foaming: low cost, simple operation and less labor. EVA foam: environmentally friendly, non-toxic, non-absorbent, and also has very good shock resistance, cushioning resistance, heat insulation, corrosion resistance, etc. 3. Different uses Rubber foam: This product can be used to make soft rubber products such as insoles, anti-slip pads, and shoulder pads. EVA: It has a wide range of uses. It has many uses in medical equipment, electronics industry, building decoration, luggage and shoes, etc. Are you clear about the difference between rubber foam and EVA foam? Due to the limitation of the length of the article, the characteristics of the two materials are still very different, and we will analyze them one by one in the future.
2021-11-24
Application of PE (polyethylene) wax in rubber
As a rubber processing aid, it can enhance the diffusion of the filler, increase the extrusion molding rate, increase the mold flow rate, facilitate demolding, and improve the surface brightness and smoothness of the product after the film is released. Rubber: protect the rubber from the erosion of electrostatic ozone, improve the dispersibility of carbon black in the rubber, the recommended amount of 2-5phr; The use of PE wax in rubber is a kind of chemical material. Among them, the color of polywax is small white beads/flakes. It is formed by polymerized rubber processing agent. It has high melting point, high hardness, high gloss, The color is white and other characteristics. The use of PE wax in rubber is a low molecular weight homopolymer or copolymer widely used in coatings. The so-called wax means that the polymer finally floats in the form of microcrystals on the surface of the paint to act as a waxy substance that looks like paraffin wax but has more different properties than paraffin wax. The main functions of PE wax in rubber in solvent-based coatings are: matting, scratch resistance, abrasion resistance, polishing resistance, imprint resistance, anti-blocking, anti-precipitation, and thixotropy. Good lubricity and processability. Metallic pigment properties. 1. Lubrication and dispersion Generally, rubber or silica gel will be mixed with some filling, some with carbon black, calcium carbonate, talc, etc., and some white carbon black will be added for those with high transparency requirements. Adding polyethylene wax can play a role in lubricating and dispersing. 2. Anti-sticking and demoulding Normal rubbers are relatively sticky and easy to stick to molds! Polyethylene wax can play a certain role in external lubrication. 3. Anti-ozone, a physical anti-aging agent for rubber products, which migrates to rubber products to form a protective film to play the role of anti-ozone. 4. Appropriate addition can reduce the Mooney viscosity of the rubber compound and play a plasticizing effect, but it should be noted that the excessive amount will affect the mechanical properties of the rubber compound. 5. Certain product extrusion, calendering, vulcanization molding fluidity. 6. Improve the uniformity of the rubber compound: the internal and external rubber materials are self-lubricating and have a certain degree of dispersibility for inorganic additions, which improves the uniformity of the rubber compound. However, general manufacturers will not choose polyethylene wax for the following reasons: 1. The melting point is relatively high The mixing temperature of some rubbers is 70-120℃, and the polyethylene wax has a high melting point, which is not easy to melt and does not play a role. (Generally, the softening point of polyethylene wax is about 70-100℃) 2. Easy to separate out Rubber is a high-molecular material, while polyethylene wax has a smaller molecule, and it is easy to precipitate if it is added, but generally it cannot achieve the effect if it is added. (2-4phr is appropriate) 3. Narrow range of use It is mainly limited by the melting point. 4. Affect product transparency 1. Anti-ozone aging: Polyethylene wax will precipitate out of the rubber surface to form a protective film; 2. Plasticizing and improving processing performance: The molecular weight of polyethylene wax is much lower than that of rubber, and its molecular chain is easy to enter the rubber molecular chain after being added, making the rubber molecular chain easier to slide; 3. Lubrication (internal lubrication + external lubrication) to improve extrusion performance and reduce shrinkage: the same as 2; 4. Make the rubber compound easier to mix evenly: the polyethylene wax enters between the rubber molecular chains to expand the distance between the rubber molecular chains, and at the same time, the low-molecular compounding agent is carried in the rubber molecular chain, so that other compounding agents are easier to disperse . Protective waxes are classified by purpose. PE wax, paraffin wax and microcrystalline wax can all be used as protective waxes. PE wax is polyethylene wax (PE-WAX), a kind of ultra-low molecular weight polyethylene. Polyethylene waxes are generally divided into oligomer waxes, cracked waxes, polymerized waxes and blended waxes. The domestically produced oligomer waxes are generally oligomer waxes. Other cracked waxes, polymerized waxes and blended waxes are mainly produced abroad. Polymerized waxes The theoretical analysis of the performance of the pyrolysis wax is better than that of the pyrolysis wax, and the specific use depends on the compatibility of the product. Generally, it is mainly used to improve the fluidity of polyolefin plastics, improve the dispersibility of fillers, additives, etc. It is also used as an internal lubricant for rubber and plastic materials.
2021-11-24
The latest extender for raw rubber ZH-668 was successfully developed
At present, most of the raw rubber extenders on the market have problems affecting wear resistance and transparency. Therefore, our company has continuously developed and innovated fillers for raw rubber. After continuous efforts, we have developed ZH-668.ZH- 668 has good transparency and high wear resistance coefficient. After experiment and comparison, adding 10PHR will not affect the transparency and wear resistance coefficient. If necessary, our company can provide relevant data for reference.
2021-11-24
Successfully developed ZH-6000, a substitute for PEG-4000 active agent
The company has successfully innovated and developed the rubber active agent masterbatch ZH-6000. The use of ZH-6000 does not require the addition of PEG-4000 and DEG and white smoke active agents (1987, AL450, etc.). ZH-6000 is a medicine gel that is convenient to operate. Dispersion is relatively better.
2021-11-24
The latest anti-ozone vomiting cream OH-66 was launched
In recent years, due to atmospheric pollution and destruction, the ozone coefficient has continued to rise, which indirectly caused the problem of rubber ozone spitting to become more and more serious. The company launched its own research and development of anti-ozone spitting cream ZH-606 in 2008 and continued to develop and innovate. Developed a more effective anti-ozone vomiting cream ZH-303. However, in response to customer needs, a new environmentally friendly anti-ozone vomiting cream OH-66.OH-66 was developed in 2014. It is non-polluting and can be used in black colored raw rubber products. It does not migrate non-wax antiozonants when used in medium, which can avoid the migration and pollution problems of amine antiozonants, and also avoid the problem of wax antiozonants migration and waxing.
2021-11-24
Xinhan (Taiwan) International Trading Co., Ltd. was established in 2004 and is one of Taiwan's excellent rubber and plastic raw materials manufacturers.
The company is headquartered in Dongguan City, Guangdong Province, and has "Xinhan Rubber Technology (Shenzhen) Co., Ltd." in Shenzhen, which is mainly engaged in the international trade of rubber raw materials and the import and export business of our rubber raw materials. In addition, a factory was set up in Wanjiang District, Dongguan City, Guangdong Province, specializing in the production of various rubber raw materials and pre-dispersed masterbatch. The plant covers an area of 5,000 square meters. It is equipped with several rubber and plastic pre-dispersed masterbatch granulation production lines and various experiments. The monthly output of the machine can reach 500 tons. In Sichuan, Wenzhou, Fujian, Jiangsu, Hebei, Xiamen and other places, we have also cooperated with dealers to sell our products, and customers all over the country. Our company also set up offices in Vietnam and Cambodia in 2014 to provide professional technology and products to serve local new and old customers in accordance with customer needs.
2021-11-23
Processing aids, tackifying resins, accelerators, antioxidants, anti-yellowing agents, antioxidants, active agents, fillers, zinc oxide powder, wear-resistant agents, EVA processing aids, EVA additives and other chemical products
Currently mainly sales of rubber and plastics: processing aids, tackifying resins, accelerators, antioxidants, anti-yellowing agents, antioxidants, active agents, fillers, zinc oxide powder, wear-resistant agents, EVA processing aids, EVA additives And other chemical products. Since its establishment in 2004, Xinhan has always taken "quality as the foundation, innovation as the goal, and integrity as the brand" as its sole purpose, and "innovative technology, supreme quality" as its business philosophy, continuously improving production technology, and strengthening and improving sales services. . Our company has technical cooperation with well-known raw material manufacturers at home and abroad, equipped with exclusive rubber material production lines and professional technical teams, and is committed to providing customers with better quality and innovative environmentally friendly products, reducing customer costs and strengthening quality assurance, so that customers can maintain world competitiveness. Our company sincerely hopes to develop and cooperate with new and old customers in the rubber and plastic industry to create a win-win situation!
2021-11-23
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