A kind of attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material and its preparation method and application

A technology of ultra-high molecular weight and attapulgite, which is applied in the field of attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material and its preparation

Active Publication Date: 2021-07-23
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant report about attapulgite / titanium dioxide powder used as a filler in solid lubricants

Method used

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  • A kind of attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material and its preparation method and application
  • A kind of attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material and its preparation method and application
  • A kind of attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material and its preparation method and application

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preparation example Construction

[0030] In the present invention, the attapulgite-titanium dioxide (ATP-TiO 2 ) The preparation method preferably comprises the following steps:

[0031] 1) Pretreating the attapulgite to obtain purified attapulgite;

[0032] 2) mixing butyl titanate, ethanol and acid to obtain a butyl titanate precursor solution;

[0033] 3) Mix the purified attapulgite with the butyl titanate precursor solution, and after suction filtration, add ethanol to the obtained solid product, and alternately perform stirring and ultrasonic dispersion until the obtained dispersion is viscous and does not settle. state, to obtain the attapulgite-butyl titanate precursor dispersion;

[0034] 4) The attapulgite-butyl titanate precursor dispersion liquid is subjected to steam hydrolysis under the conditions of magnetic stirring and constant temperature water bath, and the obtained product is sequentially aged, dried and calcined to obtain attapulgite-titanium dioxide composite material ;

[0035] The r...

Embodiment 1

[0077] Mix 10 mL of butyl titanate with 30 mL of ethanol, then add 2 mL of acetic acid, and magnetically stir the resulting solution for 30 min (rotating at 480 rpm) to obtain a butyl titanate precursor solution;

[0078] Add 2 g of purified attapulgite to the butyl titanate precursor solution, stir magnetically for 2 h (320 rpm) and then ultrasonically disperse for 1 h. After suction filtration, add 10 mL of ethanol to the resulting product, and alternately stir (30 min, 480rpm) and ultrasonic dispersion (30min) each three times to obtain the attapulgite-butyl titanate precursor dispersion;

[0079] Put the attapulgite-butyl titanate precursor dispersion into a small beaker (100mL), place the small beaker in a large beaker (500mL), add 100mL deionized water to the periphery, and seal the large beaker with plastic wrap , placed in a water bath with magnetic stirring, rotating speed 80rpm, heating at a constant temperature of 60°C, and performing steam hydrolysis. After the rea...

Embodiment 2

[0083] Mix 10 mL of butyl titanate with 40 mL of ethanol, then add 2 mL of acetic acid, and magnetically stir the resulting solution for 20 min (320 rpm) to obtain a butyl titanate precursor solution;

[0084] Add 2 g of purified attapulgite to the butyl titanate precursor solution, stir magnetically for 2 h (320 rpm) and then ultrasonically disperse for 1 h. After suction filtration, add 10 mL of ethanol to the resulting product, and alternately stir (30 min, 320rpm) and ultrasonic dispersion (30min) each three times to obtain the attapulgite-butyl titanate precursor dispersion;

[0085] Put the attapulgite-butyl titanate precursor dispersion into a small beaker (100mL), place the small beaker in a large beaker (500mL), add 100mL deionized water to the periphery, and seal the large beaker with plastic wrap , placed in a water bath with magnetic stirring, rotating speed 160rpm, heating at a constant temperature of 40°C, and performing steam hydrolysis. After the reaction, the ...

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Abstract

The invention provides an attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material and a preparation method and application thereof, which belong to the technical field of solid lubricating materials. The present invention uses attapulgite-titanium dioxide as a filler in ultra-high molecular weight polyethylene, wherein the titanium dioxide particles have high surface energy, and after being loaded on attapulgite-titanium dioxide, hard particles with high roughness can be formed, and attapulgite-titania As a filler combined with ultra-high molecular weight polyethylene, it can play a better load-bearing role in the friction process and prevent material wear; at the same time, the addition of attapulgite-titanium dioxide can improve the heat resistance of the ultra-high molecular weight polyethylene matrix , so that the composite material is less likely to deform under the condition of concentrated frictional heat, the degree of deformation of the material is reduced, and the corresponding adhesive wear is also reduced, thereby further improving the anti-friction and wear resistance of the material.

Description

technical field [0001] The invention relates to the technical field of solid lubricating materials, in particular to an attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material and a preparation method and application thereof. Background technique [0002] Solid lubricating materials mainly use solid powder, film or some integral materials to reduce the friction and wear between the two bearing surfaces. In the solid lubrication process, the solid lubricating material and the surrounding medium have physical and chemical reactions with the friction surface to form a solid lubricating film to reduce friction and wear. The existing solid lubricating materials mainly include molybdenum disulfide, graphite, graphite fluoride, boron nitride, silicon nitride, polytetrafluoroethylene, nylon, polyoxymethylene, polyimide, polyparaben and soft metal . The titanium dioxide hybrid material supported on the surface of attapulgite is a binary mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C09C1/36C09C1/42C09C3/04C09C3/06C08L23/06C08K3/34C08K3/22C08K9/12C10N30/06C10N50/08
CPCC08K3/22C08K3/346C08K9/12C08K2003/2241C08K2201/011C08L2201/08C08L2207/068C09C1/3623C09C1/363C09C1/3653C09C1/42C09C3/006C09C3/041C09C3/043C09C3/06C10M169/04C10M2201/062C10M2201/103C10M2205/0225C08L23/06
Inventor 王云霞孟兆洁阎逢元
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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