A preparation method of a synchronous belt molding vulcanization capsule
A timing belt and capsule technology, applied in the transmission field, can solve the problems of poor adhesion between the Teflon layer and the rubber layer, short service life, poor mechanical properties, etc., so as to improve the mechanical properties and wear resistance, and improve the service life. , good adhesion effect
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[0019] The invention provides a method for preparing a capsule for synchronous belt molding and vulcanization, comprising the following steps: coating an adhesive on the surface of a hollow cylindrical rubber preform to form an adhesive layer; treating the surface of modified polytetrafluoroethylene, Then cover the surface of the bonding layer to form a capsule for synchronous belt molding and vulcanization. The modified polytetrafluoroethylene is prepared by cold-pressing sintering method of polytetrafluoroethylene powder, reinforced graphene and reinforced carbon nanotubes. The capsule frock for forming and vulcanizing the synchronous belt prepared by the invention is composed of a rubber layer, an adhesive layer and a modified polytetrafluoroethylene layer.
[0020] As a preferred solution, the hollow cylindrical rubber preform is prepared according to the following method: rubber is placed in a hollow cylindrical mold for prefabrication to obtain a hollow cylindrical rubber...
Embodiment 1
[0038] The preparation method of enhanced graphene is as follows:
[0039] (1) After graphene and N-methylpyrrolidone are mixed and prepared into a suspension with a mass fraction of 40%, ultrasonication is performed for 0.5h under the condition of 300W power;
[0040] (2) Add silane coupling agent KH-550 to the suspension, stir and heat up to 60°C under 1000r / min and react for 24h, wherein the addition of KH-550 accounts for 30% of the graphene mass;
[0041] (3) After stopping the reaction, centrifugally filter, put the filter cake in a drying oven and dry at 60° C. for 24 hours to obtain the auxiliary agent, which is set aside.
[0042] The preparation method of enhanced carbon nanotubes is as follows:
[0043] (1) After mixing carbon nanotubes and ethanol to prepare a suspension with a mass fraction of 30%, ultrasonication was performed for 8 hours under the condition of 200W power;
[0044] (2) Add silane coupling agent KH-560 to the suspension, and react at 1000r / min r...
Embodiment 2
[0055] The preparation method of enhanced graphene is as follows:
[0056] (1) After graphene and N-methylpyrrolidone are mixed and prepared into a suspension with a mass fraction of 60%, ultrasonication is performed for 6 hours under the condition of 300W power;
[0057] (2) Add silane coupling agent KH-550 to the suspension, stir and heat up to 150°C under 2500r / min and react for 8h, wherein the addition of KH-550 accounts for 60% of the graphene mass;
[0058] (3) After stopping the reaction, centrifugally filter, put the filter cake in a drying oven and dry at 80° C. for 12 hours to obtain the auxiliary agent, which is set aside.
[0059] The preparation method of enhanced carbon nanotubes is as follows:
[0060] (1) After mixing the carbon nanotubes and ethanol to prepare a suspension with a mass fraction of 30%, ultrasonicate it for 8 hours under the condition of 300W power;
[0061] (2) Add silane coupling agent KH-560 to the suspension, react at 2000r / min room temper...
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