High-wear-resistance lignocellulose-based friction material derived from waste wood and preparation method thereof

A lignocellulose-based and lignocellulose technology is applied in the field of highly wear-resistant lignocellulose-based friction materials and their preparation, which can solve problems such as high manufacturing costs, and achieve good thermal stability, high mechanical strength, and a wide range of sources. Effect

Pending Publication Date: 2022-02-08
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Film-grade polyethylene is not microbiologically degradable, while biodegradable plastics such as polylactic acid have higher manufacturing costs

Method used

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  • High-wear-resistance lignocellulose-based friction material derived from waste wood and preparation method thereof
  • High-wear-resistance lignocellulose-based friction material derived from waste wood and preparation method thereof
  • High-wear-resistance lignocellulose-based friction material derived from waste wood and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] A method for preparing a highly wear-resistant lignocellulose-based friction material derived from waste wood, comprising the following steps:

[0035] Step 1: Mix 13g of choline chloride, 12g of oxalic acid dihydrate and 1.5g of poplar, and continue heating and stirring at 100°C for 2.5 hours until a viscous liquid is formed;

[0036] Step 2: Transfer the viscous liquid to a clean beaker, add 250mL of distilled water at a volume ratio of 1:10 for mixing, fully stir on a magnetic stirrer for 2 hours, perform suction filtration, and rinse the solid matter with distilled water for 3 times;

[0037] Step 3: Add water to the obtained solid matter according to the mass ratio of 1:90, and then perform ultrasonic treatment for 30 minutes until it is uniform, so as to obtain a viscous lignocellulose resin-based slurry, and then make it into a disc shape by suction filtration. Dry to obtain the LCF resin sheet.

Embodiment 2

[0039] A method for preparing a highly wear-resistant lignocellulose-based friction material derived from waste wood, comprising the following steps:

[0040] Step 1: Mix 13g of choline chloride, 12g of oxalic acid dihydrate and 1.25g of poplar wood powder, and continue heating at 110°C for 3 hours until a viscous liquid is formed;

[0041] Step 2: Transfer the viscous liquid to a clean beaker, add 300mL of distilled water at a volume ratio of 1:13 for mixing, fully stir on a magnetic stirrer for 3 hours, perform suction filtration, and rinse the solid matter with distilled water for 5 times;

[0042] Step 3: After adding water to the obtained solid substance at a mass ratio of 1:80, add 2g of sodium chlorite and 0.5mL of acetic acid per 100ml, continue heating and stirring at 100°C for 3 hours to bleach to milky white, and then carry out crushing treatment for 40min. A viscous milky white resin slurry can be obtained, and then made into a sheet by suction filtration, and drie...

Embodiment 3

[0044] A method for preparing a highly wear-resistant lignocellulose-based friction material derived from waste wood, comprising the following steps:

[0045] Step 1: Mix 26g of choline chloride, 26g of oxalic acid dihydrate and 3g of poplar, and continue heating at 110°C for 3 hours until a viscous liquid is formed;

[0046] Step 2: Transfer the viscous liquid to a clean beaker, add 500mL of distilled water at a volume ratio of 1:15 for mixing, fully stir on a magnetic stirrer for 2 hours, perform suction filtration, and rinse the solid matter with distilled water for 4 times;

[0047] Step 3: After adding water to the obtained solid substance at a mass ratio of 1:100, add 2g of sodium chlorite and 0.5mL of acetic acid as a catalyst per 80ml, continue heating and stirring at 100°C for 6 hours to bleach to milky white, and then carry out crushing treatment for 60min , to obtain a viscous milky white resin slurry, which is made into a sheet by suction filtration and dried at ro...

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Abstract

The invention discloses a preparation method of a high-wear-resistance lignocellulose-based friction material derived from waste wood. The preparation method comprises the following steps of: 1, weighing and mixing choline chloride and oxalate dihydrate; 2, weighing and mixing the mixture in the step 1 with wood flour, and then fully stirring under a high-temperature heating condition to dissolve the wood flour till viscous liquid is formed; 3, mixing the viscous liquid with distilled water, stirring to make the viscous liquid and the distilled water evenly mixed, and then conducting filtering and cleaning; and 4, mixing the solid matter obtained in the step 3 with distilled water, conducting crushing treatment till the mixture is uniform to obtain thick lignocellulose resin-based slurry, and conducting suction filtration and forming to obtain a lignocellulose-based friction material resin sheet. The raw materials are wide in source, the preparation process is simple, the cost is low, pollution is avoided, and the prepared high-wear-resistance lignocellulose-based friction material derived from waste wood has excellent tribological performance, flexibility, good water stability, high wear resistance, recoverability and degradability.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and relates to a friction material and a preparation method thereof, in particular to a highly wear-resistant lignocellulose-based friction material derived from waste wood and a preparation method thereof. Background technique [0002] In recent years, degradable resin-based friction materials have become a hot spot in the field of research, and biodegradable resin materials derived from biomass materials have great potential for development. Bioplastics synthesized from biomass raw materials such as lignin, cellulose, and hemicellulose can reduce people's excessive dependence on petroleum and reduce greenhouse gas emissions. There are various synthetic methods of this kind of plastic, such as delignification, chemical crosslinking and natural fiber modification, etc. Lignin is considered to be a kind of biomass raw material with the most development potential. [0003] The prior a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08H8/00C08J5/18C08L97/02C09K3/14
CPCC08H8/00C08J5/18C09K3/14C08J2397/02
Inventor 贾晓华陕志强宋浩杰杨进邵丹王思哲李永
Owner SHAANXI UNIV OF SCI & TECH
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