Formula of highly anti-fatigue automobile brake chamber rubber diaphragm material
A technology of automobile brake and rubber diaphragm, applied in the field of automobile brake air chamber rubber diaphragm, can solve the problem of low fatigue resistance and other problems, and achieve the effects of strong rigidity, good chemical resistance and small wear
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[0025] Raw materials: formulate according to the following examples: (unit: kilogram)
[0026]
[0027]
[0028] Preparation method: Take the blending system of natural rubber, styrene butadiene rubber and PBT as the main body, add auxiliary materials, and use high-temperature internal mixer for two-stage mixing. The details are as follows:
[0029] 1. Pre-plasticization of PBT
[0030] Weigh the PBT and dispersant according to the above formula, stir them evenly, put them into the oven, and plasticize at 160°C for 2 hours to fully disperse the PBT and achieve the purpose of pre-plasticization. At this time, the material is dry and loose, without agglomeration, and has a sense of elasticity.
[0031] 2. Plasticizing of PBT
[0032] Increase the roller temperature of the double-roll mill to 150~160℃, adjust the roller distance, add pre-plasticized PBT powder, and then start masticating until the PBT becomes a uniform transparent film, and then five triangle packs are printed. G...
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