A fluorine rubber formula is generally composed of raw rubber, acid absorbent, vulcanizing agent, accelerator, reinforcing filler, processing aid and so on. (1) Raw rubber The performance of domesti......
2020-03-14(1) Mechanical properties under normal conditions The general blending strength of 26-type fluorine rubber is 10-20Mpa; the elongation is 150-300%; the tear strength is between 20-40KN / m, but its e......
2020-03-14Question 13. A non-EU company purchased some chemicals containing SVHC from European countries, and this company exported products containing these chemicals to Europe. Does it have to apply for SVHC?......
2020-03-13Question 10. What is the difference between registration and filing? What compliance is required for exporters of products to the EU? Answer: Registration in REACH is a more detailed compliance proce......
2020-03-13Question 7. What is the communication responsibility of exporters whose products contain SVHC less than 0.1% wt / wt? Answer: If the exported product contains SVHC less than 0.1% wt / wt, the exporte......
2020-03-13Question 4.How to calculate 0.1% wt / wt? Answer: 0.1% wt / wt is calculated on the basis of percentage. It can be the amount of SVHC existing in the total weight of the product or the amount of SVHC......
2020-03-13Question 1. What is SVHC? Answer: SVHC is a substance of great concern. The European Chemicals Agency ECHA frequently updates the candidate list for SVHC. The SVHC list is updated 2-3 times a year, a......
2020-03-13Main glue The normal mix should be the system of natural rubber NR or IR with styrene butadiene rubber and butadiene rubber, which is mainly a system of butadiene rubber. At present, most factories a......
2020-03-12One. material The influence of materials on physical properties is very large. At present, China's vulcanized shoe additives have developed rapidly. In terms of general materials, it can basically re......
2020-03-12Typical use of silicone gel: 1. Precision electronic components 2. Module power supply and circuit board potting protection with high transparency and restoration requirements Use of silicone gel......
2020-03-12Definition of silicone gel: The silicone gel is frosted glass-like translucent particles. Insoluble in water and inorganic acids, but soluble in hydrofluoric acid and concentrated caustic soda soluti......
2020-03-12Rubber additives are generally divided into six categories. The first category is vulcanization system additives, mainly vulcanizing agents, accelerators and activators Vulcanizing agents include: ①......
2020-03-121.SEBS can produce elastomers with Shore hardness A0 ～ 95 by mixing with polypropylene, naphthenic oil or hydrogenated naphthenic oil, white oil, etc. Such elastomers have excellent surface texture an......
2020-03-11SEBS is the hydrogenation product of thermoplastic elastomer SBS, often referred to as hydrogenated SBS. This hydrogenated SBS has a high content of 1,2 structure, and after hydrogenation, it is......
2020-03-11Used as adhesives for corrugated paper, metal preservatives, water softeners, detergent auxiliaries, refractory materials and ceramic raw materials, bleaching, dyeing and pulping of textiles, mine ......
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