Anti-blocking resin-based friction material added with low-surface-energy filler and preparation method
A low surface energy, friction material technology, applied in the field of friction materials, can solve problems such as friction and adhesion properties that are not involved in materials, and achieve the effects of reducing the adhesion tendency, improving the anti-adhesion and reducing the wear rate.
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Embodiment 1
[0025] Step 1: Accurately weigh 25g of chopped fibers according to mass percentage, which are respectively 18g of chopped carbon fibers and 7g of aramid fibers; 7g; a total of 49g of friction modifiers, including 6g of alumina, 10g of barium sulfate, 20g of fluorite powder, and 13g of calcium carbonate; 3g of low surface energy fillers, which are polytetrafluoroethylene micropowders.
[0026] Step 2: Use an electromagnetic stirrer to disperse the polytetrafluoroethylene micropowder in deionized water, stir electromagnetically at a speed of 2000r / min for 20min, pour the uniform dispersion of polytetrafluoroethylene micropowder into the Buchner funnel, and use a vacuum filter to Suction filtration was performed, and then the polytetrafluoroethylene micropowder was placed in an oven, dried at 60° C. for 30 minutes, and then taken out.
[0027] Step 3: Put chopped carbon fiber, aramid fiber and carbon black in a high-speed mixer and mix at a speed of 25000r / min. The mixing time is...
Embodiment 2
[0033] Step 1: Accurately weigh 25g of chopped fibers according to mass percentage, which are respectively 18g of chopped carbon fibers and 7g of aramid fibers; 7g; a total of 46g of friction modifiers, including 6g of aluminum oxide, 10g of barium sulfate, 20g of fluorite powder, and 10g of calcium carbonate; 6g of low surface energy filler, which is polyethylene.
[0034] Step 2: Use an electromagnetic stirrer to disperse the polyethylene micropowder in deionized water, stir electromagnetically at a speed of 2000r / min for 20 minutes, pour the uniform dispersion of polyethylene micropowder into the Buchner funnel, and use a vacuum filter to perform suction filtration. Then the polyethylene micropowder was placed in an oven, dried at 60°C for 30 minutes, and then taken out.
[0035] Step 3: Put chopped carbon fiber, aramid fiber and carbon black in a high-speed mixer and mix at a speed of 25000r / min. The mixing time is 3s each time, with an interval of 5min, three times in tot...
Embodiment 3
[0041] Step 1: Accurately weigh 25g of chopped fibers according to mass percentage, which are respectively 18g of chopped carbon fibers and 7g of aramid fibers; 7g; a total of 43g of friction modifiers, including 6g of aluminum oxide, 10g of barium sulfate, 20g of fluorite powder, and 7g of calcium carbonate; 9g of low surface energy filler, which is polypropylene.
[0042] Step 2: Use an electromagnetic stirrer to disperse the polypropylene micropowder in deionized water, stir electromagnetically at a speed of 2000r / min for 20min, pour the homogeneous dispersion of the polypropylene micropowder into the Buchner funnel, and use a vacuum filter to perform suction filtration. Then the polypropylene micropowder was placed in an oven, dried at 60°C for 30 minutes, and then taken out.
[0043] Step 3: Put chopped carbon fiber, aramid fiber and carbon black in a high-speed mixer and mix at a speed of 25000r / min. The mixing time is 3s each time, with an interval of 5min, three times ...
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Abstract
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