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Attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material as well as preparation method and application thereof

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: 2021-01-15
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material as well as preparation method and application thereof
  • Attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material as well as preparation method and application thereof
  • Attapulgite-titanium dioxide modified ultra-high molecular weight polyethylene composite material as well as preparation method and application thereof

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preparation example Construction

[0030]In the present invention, the attapulgite-titanium dioxide (ATP-TiO2The preparation method of) preferably includes 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) The purified attapulgite is mixed with the butyl titanate precursor solution, after suction filtration, ethanol is added to the obtained solid product, and stirring and ultrasonic dispersion are performed alternately in sequence until the obtained dispersion is viscous and does not settle State, the attapulgite-butyl titanate precursor dispersion liquid is obtained;

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

[0035]The rotational...

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 minutes (rotating speed is 480 rpm) to obtain a butyl titanate precursor solution;

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

[0079]Put the attapulgite-butyl titanate precursor dispersion into a small beaker (100 mL), place the small beaker in the large beaker (500 mL), add 100 mL of deionized water to the periphery, and seal the large beaker with plastic wrap , Placed in a water bath with magnetic stirring, rotating at 80 rpm, heated at 60°C for steam hydrolysis. After the reaction is complete, the resulting p...

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 minutes (rotating speed is 320 rpm) to obtain a butyl titanate precursor solution;

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

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

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Abstract

The invention provides an attapulgite- titanium dioxide modified ultra-high molecular weight polyethylene composite material as well as a preparation method and application thereof, and belongs to thetechnical field of solid lubricating materials. According to the invention, attapulgite- titanium dioxide is used as a filler in ultrahigh molecular weight polyethylene, titanium dioxide particles have high surface energy, hard high-roughness particles can be formed after the titanium dioxide particles are loaded on attapulgite, and after attapulgite-titanium dioxide serving as filler is combinedwith ultrahigh molecular weight polyethylene, a better bearing effect can be achieved in the friction process, and abrasion of the material can be prevented; and meanwhile, the attapulgite-titanium dioxide is added, so that the heat resistance of an ultrahigh molecular weight polyethylene matrix can be improved, the composite material is not prone to deformation under the condition that frictionheat is concentrated, the deformation degree of the material is reduced to a certain extent, correspondingly, adhesive wear is also reduced to a certain extent, and the anti-friction and wear-resisting properties of the material are further improved.

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 powders, films or some integral materials to reduce the friction and wear between two bearing surfaces. In the solid lubrication process, the solid lubricating material and the surrounding medium have to physically and chemically react 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 metals. . The attapulgite surface-supported titanium dioxide hybrid material is a binary material with a high specif...

Claims

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Application Information

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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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