A preparation method of a shape-memory self-lubricating liner material, and a friction-reducing method for fixing the inner spherical surface of a shell by a spherical bearing
A technology for fixing shells and spherical bearings, which is applied in mechanical equipment, pivot connections, fiber processing, etc., and can solve problems such as failure to apply, accidents, and low coefficient of friction
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[0037] The invention provides a method for preparing a shape-memory self-lubricating liner material, comprising the following steps:
[0038] Mixing the epoxy resin matrix, multifunctional curing agent and tertiary amine accelerator to obtain a shape memory epoxy resin solution;
[0039] mixing the shape memory epoxy resin solution with a solid lubricant to obtain a lubricant dispersion system;
[0040] immersing the fiber fabric in the lubricant dispersion system to obtain a composite fiber fabric;
[0041]The composite fiber fabric is placed in a mold, pressurized and sintered, and a shape-memory self-lubricating gasket material is obtained after demolding.
[0042] In the present invention, if there is no special requirement, the preparation raw materials used are commercially available products well known to those skilled in the art.
[0043] The invention mixes the epoxy resin matrix, the multifunctional curing agent and the tertiary amine accelerator to obtain the shap...
Embodiment 1
[0073] a. Preparation of shape memory epoxy resin solution:
[0074] Mix 0.255 mol of epoxy resin E-51, 0.255 mol of curing agent methyl hexahydrophthalic anhydride, and 1.275 mmol of accelerator triethylamine, and stir evenly to obtain an uncured shape memory epoxy resin solution.
[0075] b. Preparation of lubricant dispersion system:
[0076] 28.60g of graphite with a particle size of 200 mesh and 19.07g of molybdenum disulfide with a particle size of 200 mesh were added as a solid lubricant to the above-mentioned shape memory epoxy resin solution, stirred at a rate of 400rpm for 30min, and ultrasonically treated at an ultrasonic power of 500W for 15min. A uniformly dispersed lubricant dispersion system is obtained.
[0077] c. Dipping:
[0078] The blended fabric of polytetrafluoroethylene fibers and aromatic polyamide fibers is dipped and dried 8 times in the lubricant dispersion system, and soaked for 2 minutes each time to obtain a composite fiber fabric; the polytetr...
Embodiment 2
[0097] a. Preparation of shape memory epoxy resin solution:
[0098] Mix 0.20mol epoxy resin AG-80, 0.40mol curing agent adipic acid, and 2.0mmol accelerator N,N-dimethylphenethylamine, and stir evenly to obtain an uncured shape memory epoxy resin solution.
[0099] b. Preparation of lubricant dispersion system:
[0100] Add 14.0g of graphite with a particle diameter of 200 mesh and 14.0g of molybdenum disulfide with a particle diameter of 250 mesh as a solid lubricant to the above-mentioned shape memory epoxy resin solution, stir at a rate of 450rpm for 25min, and perform ultrasonic treatment with an ultrasonic power of 400W for 30min. A uniformly dispersed lubricant dispersion system is obtained.
[0101] c. Dipping:
[0102] The blended fabric of polytetrafluoroethylene fiber and aromatic polyamide fiber is impregnated and dried 6 times in the lubricant dispersion system, and soaked for 10 min each time to obtain a composite fiber fabric; the polytetrafluoroethylene fiber...
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