Wear-resistant heat-insulating composite material and preparation method thereof

A composite material and thermal insulation technology, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of poor wear resistance, large creep performance, and decreased friction performance at low temperature, so as to avoid sticking Joining process, good wear resistance, high mechanical strength

Active Publication Date: 2020-09-29
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The reinforced material is a laminated product made of fiber reinforced material as the base material and resin as the adhesive by hot pressing. It has good mechanical strength, high insulation and heat insulation performance at low temperature, but poor wear resistance.
Wear-resistant materials have good wear resistance, but when the mechanical strength is insufficient, the creep performance is large, easy to deform, and cannot play a supporting role
[0004] Combining wear-resistant materials and reinforcing materials is usually a method of bonding, with the help of the adhesive force generated by the adhesive on the solid surface to be bonded, the method of firmly connecting different materials together, but there are The bonding effect is not good, the bonding strength is not high, and the friction performance at low temperature is reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A method for preparing a wear-resistant and heat-insulating composite material according to a specific embodiment of the present invention includes the following steps:

[0026] 1. Preparation of wear-resistant layer

[0027] The raw material composition of the wear-resistant layer (parts by mass): 60-90 parts of polytetrafluoroethylene micropowder, 2-10 parts of molybdenum disulfide, 2-10 parts of polyphenylene ester, and 0-10 parts of hollow glass microspheres. Among them, polytetrafluoroethylene micropowder is the main wear-resistant resin, molybdenum disulfide is used as a solid lubricant to improve friction performance, polyphenylene improves mechanical strength and processing performance, and hollow glass microspheres reduce thermal conductivity and improve resin fluidity.

[0028] Preparation method of wear-resistant layer: After mixing the above raw materials, put them into a mold and pressurize at a pressure of 10-80MPa, hold the pressure for 1-10min, then rele...

Embodiment 1

[0040] 1. Preparation of wear-resistant layer:

[0041] Raw material composition: 90 parts of polytetrafluoroethylene micropowder, 5 parts of molybdenum disulfide, and 5 parts of polyphenylene ester. Put it into the mold, pressurize at 30MPa, hold the pressure for 5min, sinter at 370°C, and keep it warm for 5 hours. The wear-resistant layer is activated by a naphthalene-sodium treatment solution, and the naphthalene-sodium treatment solution is a solution formed by dissolving an equimolar ratio of sodium and naphthalene in a tetrahydrofuran solvent.

[0042] 2. Preparation of reinforcement layer prepreg

[0043] Mix the hollow glass microspheres into the epoxy resin adhesive, then impregnate the glass fiber with the adhesive, and bake to form a glass fiber pre-impregnated material with a semi-cured material on the plain glass cloth. The composition of the pre-preg: glass fiber 67 parts, 30 parts of semi-cured material, and 3 parts of hollow glass microspheres.

[0044] 3. T...

Embodiment 2

[0049] 1. Preparation of wear-resistant layer:

[0050]Raw material composition: 85 parts of polytetrafluoroethylene micropowder, 7 parts of molybdenum disulfide, 2 parts of polyphenylene ester, and 6 parts of hollow glass microspheres. Put it into the mold, pressurize at 20MPa, keep the pressure for 3min, sinter at 370°C, and keep it warm for 5 hours. The wear-resistant layer is activated by a naphthalene-sodium treatment solution, and the naphthalene-sodium treatment solution is a solution formed by dissolving an equimolar ratio of sodium and naphthalene in a tetrahydrofuran solvent.

[0051] 2. Preparation of reinforcement layer prepreg

[0052] Mix the hollow glass microspheres into the polyamide-imide adhesive, then impregnate the glass fiber with the adhesive, and bake it to form an aramid fiber prepreg material with a semi-cured material on the plain aramid cloth. The prepreg composition : 65 parts of aramid fiber, 30 parts of semi-cured product, 5 parts of hollow gla...

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Abstract

The invention discloses a wear-resistant heat-insulating composite material and a preparation method thereof. The preparation method comprises the following steps: putting a wear-resistant layer raw material into a mold, pressurizing, maintaining the pressure, releasing the pressure, demolding, sintering to prepare a wear-resistant layer plate, and activating the wear-resistant layer plate with anaphthalene-sodium treatment liquid; soaking a fiber or a fiber-fabric in an adhesive to form a reinforced layer prepreg with a semi-cured product on the fiber or fiber-fabric; and compounding one ormore layers of overlapped reinforcing layer prepregs and wear-resistant layer plates, and carrying out hot press molding to obtain the wear-resistant heat-insulating composite material. The wear-resistant material and the reinforcing material are compounded and integrally formed, so that the bonding process is omitted under the condition of ensuring the bonding strength of the wear-resistant layerand the reinforcing layer, and the surface of the composite material is ensured to have wear resistance and good mechanical strength, insulation and heat insulation properties at a low temperature. The composite material disclosed by the invention is applied to a low-temperature environment from room temperature to absolute zero DEG C and can simultaneously meet the effects of insulation, wear resistance, heat insulation and structural support.

Description

technical field [0001] The invention relates to a composite material, in particular to a wear-resistant and heat-insulating composite material and a preparation method thereof. Background technique [0002] With the rapid development of low-temperature transportation, storage and operation equipment, there are requirements for materials to maintain good mechanical strength, heat insulation, insulation and wear resistance at extremely low temperatures. Therefore, a new type of wear-resistant and heat-insulating composite material is required. In the low temperature environment from room temperature to absolute zero (-273°C), it can simultaneously meet the functions of insulation, wear resistance, heat insulation and structural support. [0003] The reinforced material is a laminated product made of fiber reinforced material as the base material and resin as the adhesive by hot pressing. It has good mechanical strength, insulation and heat insulation performance at low tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/12B32B27/02B32B7/12B32B9/04B32B17/10B32B27/08B32B17/02B32B9/00B32B27/36B32B27/34B32B33/00C08L27/18C08L67/00C08K3/30C08K7/28C08J5/18C08J7/12C08J5/24C08L63/00C08K7/14C08L77/10C08L79/08B29C70/34
CPCB32B27/322B32B27/18B32B27/12B32B5/02B32B7/12B32B9/045B32B17/10B32B27/08B32B33/00C08J5/18C08J7/12C08J5/24B29C70/345C08J2327/18C08J2467/00C08K2003/3009C08K7/28C08J2363/00C08K7/14C08J2379/08C08J2477/10B32B2307/304B32B2307/554B32B2307/206B32B2307/50B32B2262/101B32B2262/10B32B2262/106B32B2262/0276B32B2262/0269
Inventor 王一靓刘婷左景奇王明星杨名波杨军
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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