Combined composite of chlorosulfonated polyethylene rubber and epichlorohydrin rubber for outer rubber layer of crankcase ventilation duct
A chlorosulfonated polyethylene, crankcase ventilation technology, applied in the direction of hoses, pipes, pipes/pipe joints/pipes, etc., can solve the problems of customers not being able to withstand -40 ℃ low temperature and poor low temperature resistance, and achieve excellent The effect of ozone aging resistance and heat aging resistance, high physical and mechanical properties, and good low temperature resistance
Inactive Publication Date: 2012-10-03
TIANJIN PENGYI GRP CO LTD
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Problems solved by technology
[0003] Chlorosulfonated polyethylene rubber is a soft and elastic polymer material made of polyethylene after chlorination and sulfonation. It has excellent ozone aging resistance, flame resistance, weather aging resistance and good processing performance. , but its low temperature resistance is poor, which limits its application in many occasions
[0004] Many automobile manufacturers require crankcase ventilation pipes made of chlorosulfonated polyethylene rubber on the outer rubber layer to be able to withstand a low temperature of -40°C. The low temperature resistance level of pure chlorosulfonated polyethylene rubber is -30°C, which cannot satisfy customers. The low temperature resistance requirement of -40°C, while the low temperature resistance of chloroether rubber can reach -46°C, and the high temperature resistance is similar to that of chlorosulfonated polyethylene rubber
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[0011] The present invention obtains the outer rubber layer composition of the crankcase ventilation pipe with excellent performance by adjusting the ratio of each component in the combination composition of chlorosulfonated polyethylene rubber and epichlorohydrin rubber, and the examples are as follows:
[0012]
[0013]
[0014] It can be seen from the data table that the combination of chlorosulfonated polyethylene rubber and chloroether rubber still has excellent physical and mechanical properties, heat resistance, and ozone aging resistance, and the low temperature resistance of chlorosulfonated polyethylene rubber has been significantly improved.
[0015] It can be seen from the above examples that with the blending of different proportions of chloroether rubber in chlorosulfonated polyethylene rubber, the low temperature resistance of the blended rubber is significantly improved, so it can be adjusted by adjusting chlorosulfonated polyethylene rubber and chloroether...
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The invention relates to a combined composite of chlorosulfonated polyethylene rubber and epichlorohydrin rubber for an outer rubber layer of a crankcase ventilation duct. The combined composite comprises the following rubber components in part by mass: 50 to 80 parts of chlorosulfonated polyethylene rubber, 20 to 50 parts of epichlorohydrin rubber, 2.2 parts of fast extruding furnace carbon black, 80 parts of precipitated calcium carbonate, 10 parts of dioctyl, 10 parts of magnesium oxide, 1 part of stearic acid, 6 to 9.6 parts of epoxy resin, 1 part of anti-aging agent NBC, 2 parts of flow aid WB222, 0.5 to 0.8 part of promoter DM, 0.75 to 1.2 parts of dipentamethylenethiuram tetrasulfide (DPTT) serving as a promoter, 0.75 to 1.2 parts of promoter HVA-22 and 0.2 to 0.5 part of promoter NA-22. According to the combined composite, the outer rubber layer of the crankcase ventilation duct, which is resistant to low temperature, high temperature and ozone and high in physical and mechanical properties is manufactured by adjusting the combined ratio of the chlorosulfonated polyethylene rubber and the epichlorohydrin rubber.
Description
technical field [0001] The invention relates to the technical field of rubber, in particular to a combination composition of chlorosulfonated polyethylene rubber and epichlorohydrin rubber used for the outer rubber layer of a crankcase ventilation pipe. Background technique [0002] With the rapid development of the automobile industry, there are great opportunities and challenges for auto parts manufacturers. The requirements for the selection of automobile rubber hoses by various OEMs are becoming more and more stringent, and the requirements for material performance are also constantly improving. [0003] Chlorosulfonated polyethylene rubber is a soft and elastic polymer material made of polyethylene after chlorination and sulfonation. It has excellent ozone aging resistance, flame resistance, weather aging resistance and good processing performance. , but its low temperature resistance is poor, which limits its application in many occasions. [0004] Many automobile man...
Claims
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Login to View More IPC IPC(8): C08L23/34C08L71/03C08L63/00C08K13/02C08K3/04C08K3/26C08K5/10C08K3/22C08K5/09F16L11/04
Inventor 张洪起万桂玲
Owner TIANJIN PENGYI GRP CO LTD