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Phenolic glue and preparation method thereof

A technology of phenolic glue and acetaldehyde, which is applied in the direction of adhesives, aldehyde/ketone condensation polymer adhesives, adhesive types, etc., can solve problems such as difficult to meet the sticking requirements, complicated preparation process, and poor performance of phenolic glue, and achieve Small creep and hysteresis, soft mechanical strength, good bonding performance and insulation performance

Pending Publication Date: 2020-04-17
广东微应变传感科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation process of the existing phenolic glue is relatively complicated, and the performance of the prepared phenolic glue is poor, so it is difficult to meet the sticking requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method for phenolic glue, comprising the following steps:

[0035] Prepare component A, polyvinyl formal, which is composed of 40 parts by weight of polyvinyl acetate, 8 parts of formaldehyde, 40 parts of acetaldehyde, 40% H 2 S0 4 6 parts, composed of 90 parts of glacial acetic acid.

[0036] for 40%H 2 SO 4 , which can be determined by H 2 SO 4 : Deionized water = 40:58 weight ratio Weigh 58 grams of deionized water in a clean beaker, and then use another beaker to weigh 40 grams of 98% H 2 S0 4 , hold a clean glass rod in the left hand and close its lower end to the deionized beaker, and hold the H in the right hand 2 SO 4 beaker, the H 2 SO 4 Slowly add along the glass rod, every 10 grams of H 2 SO 4 Use a glass rod to stir for a while, and then continue to add H after the heat is dissipated. 2 S0 4。 After adding, keep stirring and cool to room temperature, then transfer it to a dry and clean three-necked bottle, cover it well, and shake...

Embodiment 2

[0049] A preparation method for phenolic glue, comprising the following steps:

[0050] Prepare component A, polyvinyl formal, which is composed of 43 parts by weight of polyvinyl acetate, 10 parts of formaldehyde, 43 parts of acetaldehyde, 40% H 2 S0 4 7 parts, composed of 100 parts of glacial acetic acid.

[0051] for 40%H 2 SO 4 , which can be determined by H 2SO 4 : Deionized water = 40:58 weight ratio Weigh 58 grams of deionized water in a clean beaker, and then use another beaker to weigh 40 grams of 98% H 2 S0 4 , hold a clean glass rod in the left hand and close its lower end to the deionized beaker, and hold the H in the right hand 2 SO 4 beaker, the H 2 SO 4 Slowly add along the glass rod, every 10 grams of H 2 SO 4 Use a glass rod to stir for a while, and then continue to add H after the heat is dissipated. 2 S0 4。 After adding, keep stirring and cool to room temperature, then transfer it to a dry and clean three-necked bottle, cover it well, and shak...

Embodiment 3

[0064] A preparation method for phenolic glue, comprising the following steps:

[0065] Preparation of component A, polyvinyl formal, which consists of 50 parts by weight of polyvinyl acetate, 12 parts of formaldehyde, 45 parts of acetaldehyde, 40% H 2 S0 4 9 parts, composed of 140 parts of glacial acetic acid.

[0066] for 40%H 2 SO 4 , which can be determined by H 2 SO 4 : Deionized water = 40:58 weight ratio Weigh 58 grams of deionized water in a clean beaker, and then use another beaker to weigh 40 grams of 98% H 2 S0 4 , hold a clean glass rod in the left hand and close its lower end to the deionized beaker, and hold the H in the right hand 2 SO 4 beaker, the H 2 SO 4 Slowly add along the glass rod, every 10 grams of H 2 SO 4 Use a glass rod to stir for a while, and then continue to add H after the heat is dissipated. 2 S0 4。 After adding, keep stirring and cool to room temperature, then transfer it to a dry and clean three-necked bottle, cover it well, and...

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PUM

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Abstract

The invention discloses a phenolic glue and a preparation method thereof. The phenolic glue is prepared from, by weight, 8 to 10 parts of polyvinyl formal acetal, 5 to 7 parts of a yellow transparentblocky brittle material, 65 to 75 parts of ethylene glycol monoethyl ether, 8 to 12 parts of cyclohexanone and 15 to 25 parts of banana oil, wherein the yellow transparent blocky brittle material is prepared from 64 to 66 parts of phenol, 20 to 25 parts of aniline, 6 to 10 parts of NH3H2O and 98 to 110 parts of formaldehyde, and the polyvinyl acetate is prepared from 40 to 50 parts of polyvinyl acetate, 8 to 12 parts of formaldehyde, 40 to 45 parts of acetaldehyde, 6 to 9 parts of H2SO4 and 90 to 140 parts of glacial acetic acid. The phenolic aldehyde adhesive prepared in the invention has good performances and good viscosity, and is especially suitable for being used as a substrate adhesive of a strain gauge.

Description

technical field [0001] The invention relates to the field of glue, in particular to a phenolic glue and a preparation method thereof. Background technique [0002] As a high temperature resistant adhesive, phenolic adhesive plays an irreplaceable role in aviation, aerospace and other fields. With the improvement of high temperature resistance and processability requirements of adhesives in these fields, it is more and more important to prepare low temperature curing high temperature resistant phenolic adhesives for metal-metal and metal-nonmetal bonding. [0003] The preparation process of the existing phenolic glue is relatively complicated, and the performance of the prepared phenolic glue is poor, so it is difficult to meet the sticking requirements. Contents of the invention [0004] In order to solve the above technical problems, the present invention provides a phenolic glue. [0005] In order to solve the above technical problems, the present invention takes the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J129/14C09J161/34C09J11/00C08G14/073C08F8/28C08F8/00C08F18/08
CPCC08F8/00C08F8/28C08G14/06C08L2201/08C09J11/00C09J129/14C08L61/34C08F18/08
Inventor 危彩良邵朱林柳志波
Owner 广东微应变传感科技有限公司
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