Company Profile
Weifang Phoenix New Material Co., Ltd
Weifang Phoenix New Material Co., Ltd is a high-tech chemical enterprise integrating research and development,
production, sales and technical services. Headquartered in Weifang, Shandong Province. Its production facilities are
ocated in Weifang Binhai Chemical Industry Park, a state-approved chemical industry park.
Our mission is to be the leading sustainable "one-stop shop" chemical solutions company, providing customers
with innovative, science-led, differentiated products and solutions. To this end, we provide a safe and healthy working
environment for our employees and comply with all local, national and international regulations.
Product Parameters
| PROJECT |
HT-403 |
HT-503 |
HT-603 |
HT-703 |
HT-803 |
HT-903 |
HT-604 |
HT-48 |
HT-45 |
| Chlorine % |
35±2 |
35±2 |
35±2 |
35±2 |
35±2 |
35±2 |
43±2 |
43±2 |
25±2 |
| Sulfur content % |
1.0~1.5 |
1.0~1.5 |
1.0~1.5 |
1.0~1.5 |
1.0~1.5 |
1.0~1.5 |
1.0~1.5 |
1.0~1.5 |
1.0~1.5 |
| Volatile matter % ≤ |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
| Tensile strength MPa ≥ |
25 |
25 |
25 |
25 |
25 |
25 |
- |
- |
- |
| Elongation at break % ≥ |
450 |
450 |
450 |
450 |
450 |
450 |
- |
- |
- |
Mooney viscosity
ML(1+4) 100ºC |
40~50 |
50~60 |
60~70 |
70~80 |
85~95 |
95~110 |
50~70 |
70~90 |
35~45 |
CSM has been widely used in the fields of wires and cables, waterproof coils, and the automotive industry, and has become a commonly used special rubber. Anti-corrosion coatings made from CSM as the basic material have a wide range of uses.
CSM is widely used in the automotive industry abroad, but its application in this area is almost blank in my country. With the acceleration of the localization process of spare parts in my country's automotive industry, the potential consumption of CSM in the automotive industry is huge. It is estimated that the potential demand for CSM in the automotive industry in 2005 should be at least 3,000 tons.
CSM is used in industry to manufacture products such as pipes, conveyor belts, and seals with special properties. For example, laminated tubes made with CSM as the inner layer have low permeability to fluorocarbon refrigerants and are suitable for refrigerant delivery pipes. When manufacturing CSM-fluororubber laminated tubes, if peroxide is added, the peel strength of the laminated product can be greatly improved. The laminated product is suitable for manufacturing pipes and containers for transporting and storing fuel oil.
CSM can be blended and modified with other rubbers. Blending CSM with fluororubber can improve the processing performance of the blended rubber. CSM can be mixed with EPDM to improve the physical and mechanical properties and thermophysical characteristics of vulcanized rubber. Adding CSM and isoprene rubber to EVA polymer can produce slip resistance, wear resistance, and oil resistance. CSM can be mixed with PVC and PU in an extruder and then vulcanized to produce vulcanized rubber with improved oil resistance and ozone resistance.
Vulcanization system
Some people think that the statement that "MgO, ZnO is the CSM vulcanization system" is unreasonable. Most of the information about the combination and vulcanization of CSM and chlorinated polymers comes from Japan, such as the chlorinated polyethylene and chlorosulfonated polyethylene in the first volume of the Rubber Industry Handbook. Some academic literature contains information about this type, but it is still plagiarized (it cannot be said to be a reference, because I have not given myself experiments and thinking). Some of the original information.
In CR and CIIR, because they contain highly active allyl chloride, metal oxides can be used for crosslinking. However, in chlorinated polymers such as CSM and CM, there is no such active chlorine as a vulcanization active point, and it cannot be vulcanized so easily. Fortunately, in CSM, sulfonation is carried out, and a highly active "sulfonyl chloride" group appears, which can be vulcanized much more easily than CM. The commonly used TRA in the CSM formula is the most effective vulcanizer (not a vulcanization accelerator) for CSM. When there is no oxide such as magnesium oxide, CSM can also be vulcanized. After adding magnesium oxide, it only acts as an acid absorber and can improve the performance.
But there is one strange thing. After adding zinc oxide (ZnO), the vulcanization efficiency is affected. This shows that zinc oxide can not only accelerate the dehydrochlorination (HCl), but also cause the instability of the rubber. In polymers without highly active chlorine, ZnO can only accelerate the dehydrochlorination rate when heated. (Introduction: It is not ZnO itself that causes the dehydrochlorination, but ZnCl2 generated by the reaction of Zn and Cl. The mechanism of this place can be found in the organic chemistry <Halogenated hydrocarbons> chapter, Lewis acid to halogenated hydrocarbons part). Pentaerythritol alone cannot crosslink CSM. Only when there is a vulcanizing agent TRA, etc., can the vulcanization speed be greatly increased, which greatly promotes the vulcanization speed, but the scorch performance is somewhat
Reinforcement filling system
The difference between CSM rubber and other rubbers is that even without adding reinforcing fillers, its vulcanized rubber has a high static vulcanization strength. This is because the vulcanization structure of CSM has unique characteristics. The side groups generated during the vulcanization process associate with the polarity of the cross-linking bond to form microparticles. This microparticle has both the function of a vulcanization network and the function of a physical crosslinking point.
However, fillers can still improve the process performance of rubber, improve the heat resistance and wear resistance of vulcanized rubber, and reduce costs. Commonly used reinforcing fillers include carbon black, calcium carbonate, kaolin, diatomaceous earth, white carbon black, talcum powder, etc. The extent of the role of fillers depends on their particle size. The finer the particles, the better the performance of the resulting vulcanized rubber. Among inorganic fillers, white carbon black can ensure the highest heat resistance. Diatomaceous earth can improve the tear strength of vulcanized rubber and increase its rigidity and hardness.
To improve the weather resistance of vulcanized rubber, kaolin should be used, and it has the following characteristics: good dielectric properties, and it does not decrease after moisture absorption, and has excellent dynamic properties. In light-colored products, barium sulfate and zinc barium white can be effectively filled, and titanium dioxide can improve the brightness and weather resistance of the vulcanized rubber.
CSM vulcanized rubber containing fillers has high chemical stability. Thermal cracking carbon black, barite, etc. can make vulcanized rubber obtain the best hydrochloric acid resistance. For sulfuric acid resistance, the fillers that can achieve the best effect are thermal cracking carbon black, kaolin, barite, diatomaceous earth, etc. For nitric acid resistance, it is thermal cracking carbon black.
Plasticizer system
Plasticizers are used in chlorosulfonated polyethylene rubber to improve the process performance of the rubber compound, the low-temperature performance of the vulcanized rubber, and to improve its elasticity and reduce hardness. Petroleum oils, ointments and ester plasticizers are the most commonly used in CSM rubber compounds. The amount can be slightly more than in other rubbers. In vulcanized rubber that is in contact with chemicals, the amount of plasticizer should be reduced to a minimum.
For rubber to be used at low temperatures, it is best to use ester plasticizers. Such as DOP, DOA, DOS, etc. Chlorinated paraffin is used as a flame retardant in other rubbers. In CSM, in addition to flame retardancy, it can also improve tensile strength and the retention rate of elongation after heat aging, and the low-temperature performance is also good. Chlorination of about 40% is good, and chlorides above 50% have improved flame retardancy but poor low-temperature performance.
Stabilization protection system
The function of the stabilizer is to prevent the degradation of chlorosulfonated polyethylene rubber during production, storage and use. Commonly used ones include stearate, organic tin, magnesium oxide, etc. Magnesium oxide is a good and common stabilizer that can effectively absorb by-products such as hydrogen chloride.
Product Description
CSM, also known as Chlorosulfonated Polyethylene, is a synthetic rubber produced from chlorosulfonated polyethylene. It has excellent ozone, weathering, and chemical resistance, making it a popular choice for industrial applications such as gaskets, hoses, and conveyor belts. CSM also has good electrical insulation properties and can withstand high temperatures. In addition, it is flame retardant, low smoke, and low toxicity, making it a safe choice for the transportation industry. Due to its high tensile strength and durability, CSM is often used in the production of industrial hoses, gaskets, and seals. CSM is also used in the automotive industry for the production of timing belts, fuel hoses, and other parts that require resistance to oils and fuels. In addition, due to its excellent weathering and electrical insulation properties, CSM is used in the production of roofing membranes and cables in the construction industry.
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