Preparation method of plantpolyenoidbisphenolfriction powder

A technology of ethylene bisphenol friction powder and ethylene bisphenol, which is applied in the field of plant polyene bisphenol friction powder and its preparation, and can solve problems such as insufficient heat resistance

Active Publication Date: 2017-06-20
常熟耐素生物材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a preparation method of plant polyene bisphenol friction powder aiming at the technical problem of insufficient heat resistance existing in cashew nut shell oil friction powder, the prepared plant polyene bisphenol friction powder Powder has significantly improved resistance to cashew shell oil friction powder

Method used

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  • Preparation method of plantpolyenoidbisphenolfriction powder
  • Preparation method of plantpolyenoidbisphenolfriction powder
  • Preparation method of plantpolyenoidbisphenolfriction powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add plant polyene bisphenol into the reaction kettle, add 3% sulfuric acid and 3% urotropine accounting for plant polyene bisphenol, polymerize at 100 degrees for 4 hours, test the viscosity of the prepolymer after polymerization, add 8% urotropine The product was added to the prepolymer, cured at 135°C for 4 hours, and cured at 175°C for 3 hours. The acetone extraction rate and the index of weight loss at 370°C were tested. The results are shown in Table 1.

[0027] Table 1

[0028]

Embodiment 2

[0030] Add plant polyene bisphenol into the reaction kettle, add 3% sulfuric acid and 3% urotropine accounting for plant polyene bisphenol, polymerize at 100 degrees for 4 hours, test the viscosity of the prepolymer after polymerization, add 10.65% paraformaldehyde Add it to the prepolymer, cure at 135°C for 4 hours, and cure at 175°C for 3 hours. Test the acetone extraction rate and the index of weight loss at 370°C. The results are shown in Table 2.

[0031] Table 2

[0032]

Embodiment 3

[0034] Add plant polyene bisphenol into the reaction kettle, add 3% sulfuric acid and 3% urotropine accounting for plant polyene bisphenol, polymerize at 100 degrees for 4 hours, test the viscosity of the prepolymer after polymerization, add 33% furfural to the prepolymer In the polymer, it was cured at 135°C for 4 hours, and at 175°C for 3 hours. The acetone extraction rate and the index of weight loss at 370°C were tested. The results are shown in Table 3.

[0035] table 3

[0036]

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PUM

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Abstract

The invention discloses a preparation method of plantpolyenoidbisphenolfriction powder. The preparation method is characterized by comprising after adding and mixing acid and one or any two of urotropinand aldehydein plantpolyenoidbisphenol, carrying out polymerization reaction at first temperature for generating a prepolymer; after determining viscosity of the prepolymer reaches to a certain value, adding one or any two of urotropinand aldehyde into the prepolymer, and carrying out curing for the first time at second temperature; then carrying out curing for the second time at third temperature to obtain the plantpolyenoidbisphenolfriction powder. The performance of the plantpolyenoidbisphenolfriction powder prepared by the invention is superior to the thermal performance of cashew nut shell oil friction powder, and starting from 200 DEG C, the thermal weight loss rate of the cashew nut shell oil friction powder is remarkably higher than the thermal weight loss rate of the plantpolyenoidbisphenolfriction powder.

Description

technical field [0001] The invention relates to the technical field of friction powder and its preparation, in particular to a plant polyene bisphenol friction powder and a preparation method thereof. Background technique [0002] Friction materials are usually made of reinforced fiber asbestos, phenolic resin adhesive, cashew nut shell oil friction powder and inorganic fillers, etc. by mixing and thermoforming. In addition to mechanical strength, the performance required by it must also have the following four characteristics: ①The friction coefficient is stable within a certain range; ②Low wear rate, long service life; ③Do not scratch the counterpart material; ④Low friction noise. An important factor affecting these characteristics is the composition and proportion of the friction material. For example, the friction material produced only with asbestos and phenolic resin is unstable and has no practical value. However, if modifiers such as cashew nut shell oil friction po...

Claims

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Application Information

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IPC IPC(8): C08G8/20C09K3/14
CPCC08G8/20C09K3/1454
Inventor 戴志成
Owner 常熟耐素生物材料科技有限公司
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