Composite material and preparation method thereof

A composite material and rubber technology, which is applied in the field of composite materials and its preparation, can solve the problems of poor self-lubricating performance, achieve the effects of simplifying the process flow, excellent self-lubricating performance, and avoiding complicated processes

Active Publication Date: 2012-12-19
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The composite sliding bearing prepared by this method uses polytetrafluoroethylene as the main material, and is connected with the metal jacket by using copper wire or copper powder as the intermediate layer, so that it has good adhesion to the metal, but the above-mentioned sliding bearing It needs to be lubricated by water or oil to operate, and its self-lubricating performance is relatively poor

Method used

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  • Composite material and preparation method thereof
  • Composite material and preparation method thereof

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preparation example Construction

[0053] The present invention also provides a kind of preparation method of composite material, comprises the following steps:

[0054] 90-110 parts by weight of rubber, 0.5-5 parts by weight of peroxide initiator, 4-30 parts by weight of crosslinking agent, 1-15 parts by weight of nano-titanium dioxide, 5-40 parts by weight of nano-silicon carbide, 5-30 parts by weight of ultra-high molecular weight polyethylene, 2-20 parts by weight of polytetrafluoroethylene, 2-20 parts by weight of glass fiber, 0-15 parts by weight of molybdenum disulfide, 0-15 parts by weight of graphite, 0-10 parts by weight of zinc oxide and 0-10 parts by weight of potassium hexatitanate are mixed in an internal mixer to obtain a rubber compound;

[0055] The mixed rubber is placed in a mould, and after press vulcanization, a composite material is obtained.

[0056] According to the present invention, as a preferred solution, the cavity temperature of the internal mixer is 20-100° C., and the spindle sp...

Embodiment 1

[0065] Heat the chamber of the internal mixer to 105°C, control the spindle speed at 25-30rpm, add 100 parts by weight of nitrile rubber raw rubber to the internal mixer, and add 0.5 parts by weight of stearic acid and 40 parts by weight of charcoal Black N220, 5 parts by weight of dicumyl peroxide (DCP), 5 parts by weight of trimethylolpropane trimethacrylate, 5 parts by weight of ultra-high molecular weight polyethylene powder, 1 part by weight of allyl Triethoxysilane, molybdenum disulfide of 10 parts by weight, polytetrafluoroethylene powder of 25 parts by weight, nano titanium dioxide of 15 parts by weight, nanometer silicon carbide of 30 parts by weight, glass fiber of 5 parts by weight, after the torque is constant, Control the spindle speed at 30-60rpm, continue mixing for 10 minutes, and then take out the mixed rubber. Transfer the mixed rubber to the double-roller mill for mixing. After mixing evenly, adjust the distance between the double-rollers of the mill to obta...

Embodiment 2

[0071] Heat the chamber of the internal mixer to 55°C, control the spindle speed at 25-30rpm, add 100 parts by weight of polyether polyurethane raw rubber to the internal mixer, add 0.5 parts by weight of stearic acid, 35 parts by weight of Silica, 14 parts by weight of ACTIGRAN 50 / 70, 2 parts by weight of dicumyl peroxide (DCP), 10 parts by weight of glyceryl methacrylate, 4 parts by weight of hydroquinone Two (2-hydroxyethyl) ether (HQEE), 10 parts by weight of ultra-high molecular weight polyethylene powder, 5 parts by weight of polytetrafluoroethylene powder, 10 parts by weight of nano-titanium dioxide, 8 parts by weight of nano-silicon carbide, 4 parts by weight 1010 parts by weight of ultraviolet absorber, 5 parts by weight of glass fiber, after the torque is constant, the spindle speed is controlled at 25-30 rpm, and the mixed rubber is taken out after continuing to knead for 10 minutes. Transfer the mixed rubber to a double-roller mill for mixing. During the mixing pro...

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Abstract

The invention provides a composite material which comprises the following components in parts by weight: 90-110 parts of rubber, 1-15 parts of nanometer titanium dioxide, 2-20 parts of glass fiber, 5-30 parts of ultra-high molecular weight polyethylene, 2-20 parts of polytetrafluoroethylene, 5-40 parts of nanometer silicon carbide, 0.5-5 parts of peroxide initiator, 4-30 parts of cross-linking agent, 0-15 parts of molybdenum disulfide, 0-15 parts of graphite, 0-10 parts of zinc oxide, and 0-10 parts of potassium hexatitanate. The invention further provides a preparation method of the composite material. The nanometer titanium dioxide, the nanometer silicon carbide, the polytetrafluoroethylene and the ultra-high molecular weight polyethylene are added in the composite material and form a crystallographic and covalent cross-linking composite material with the rubber through a cross-linking effect of the peroxide initiator and the cross-linking agent.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a composite material and a preparation method thereof. Background technique [0002] Composite materials are materials containing multiple components, which are composed of raw materials such as organic polymers, inorganic non-metals or metals. Composite materials can not only maintain some properties of their original components, but also have some properties that the original components do not have. [0003] The polymer composite material in the composite material is a material composed of compounds with relatively high molecular weight. Polymer composite materials have the following advantages: 1) good toughness, vibration absorption, and no noise; 2) good chemical stability, and little dependence of friction and wear on atmosphere; 3) good low temperature performance, in liquid nitrogen, liquid hydrogen and vacuum It can still play a lubricating role under ultra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L15/00C08L9/02C08L75/04C08L23/28C08L23/06C08L27/18C08K13/04C08K7/14C08K5/14C08K3/34C08K3/22C08K3/30C08K3/04C08K3/24B29B7/00
Inventor 王世伟杨小牛
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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