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A kind of cardanol modified nitrile phenolic resin adhesive and preparation method thereof

A technology of cardanol nitrile-based resin and nitrile-based phenolic resin, applied in the field of cardanol-modified nitrile-based phenolic resin adhesive and its preparation, can solve problems such as poor process performance, low bonding strength, and high viscosity, and achieve The effect of improving processing performance and reducing usage

Active Publication Date: 2021-07-20
INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high brittleness, low bonding strength, high viscosity and poor processability of existing phenolic resins, the invention provides a cardanol-modified nitrile-based phenolic resin adhesive and a preparation method thereof

Method used

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  • A kind of cardanol modified nitrile phenolic resin adhesive and preparation method thereof
  • A kind of cardanol modified nitrile phenolic resin adhesive and preparation method thereof
  • A kind of cardanol modified nitrile phenolic resin adhesive and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0036] A cardanol-modified nitrile-based phenolic resin adhesive, comprising the following components in parts by mass: 100 parts of nitrile-based phenolic resin and 2.5-50 parts of cardanol-based nitrile-based resin.

Embodiment 2

[0038] A cardanol-modified nitrile-based phenolic resin adhesive, comprising the following components in parts by mass: 100 parts of nitrile-based phenolic resin and 2.5 to 50 parts of cardanol-based nitrile-based resin, wherein the structural formula of the cardanol-based phenolic-based resin is:

[0039]

[0040] where R=C 15 h 32-n .

[0041] The viscosity of the cardanol nitrile resin used in the present embodiment at 25°C is not more than 600mPa·s,

Embodiment 3

[0043] The present embodiment provides a kind of preparation method of cardanol modified nitrile phenolic resin adhesive, comprises the steps:

[0044] Step 1, prepare cardanol nitrile-based resin:

[0045] Weigh cardanol and nitro-substituted phthalonitrile according to a certain molar ratio and put it into an organic solvent, fully stir to obtain a uniform mixed solution, add a certain amount of basic catalyst to the mixed solution, and make the reaction system Stirring at a certain temperature while reacting for a certain period of time, after the reaction is completed, the resulting product is cooled to room temperature, allowed to stand for stratification, and the upper layer liquid is collected, washed with water, extracted with a solvent, and distilled under reduced pressure to obtain a cardanol nitrile-based resin;

[0046] Step 2, prepare phenolic resin:

[0047] Mix phenol and formaldehyde evenly in a certain molar ratio, add catalyst a at a certain reaction tempera...

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Abstract

The invention relates to a cardanol-modified nitrile phenolic resin adhesive and a preparation method thereof, belonging to the technical field of adhesives. In order to solve the problems of high brittleness, low bonding strength, high viscosity and poor processability of existing phenolic resins, the present invention provides a cardanol-modified nitrile phenolic resin adhesive, the components of which include nitrile phenolic resin and Cardanol nitrile resin; the preparation method includes preparing cardanol nitrile resin, preparing phenolic resin, preparing nitrile phenolic resin, and modifying nitrile phenolic resin with cardanol nitrile resin to obtain an adhesive. The present invention utilizes the characteristics of low viscosity and high temperature resistance activity of the cardanol nitrile-based resin, and using it to modify the nitrile-based phenolic resin can significantly reduce the viscosity of the nitrile-based phenolic resin while improving the flexibility and bonding performance of the adhesive, Therefore, the processing performance of the high temperature resistant adhesive is improved, the amount of solvent used is reduced, and it is an environmentally friendly material.

Description

technical field [0001] The invention belongs to the technical field of adhesives, in particular to a cardanol-modified nitrile phenolic resin adhesive and a preparation method thereof. Background technique [0002] Cashew nut shell oil is made from the shell of the natural product cashew nut through multiple processes. Its main components are anacardic acid and cardol. After further decarboxylation and vacuum distillation, cardanol is obtained. The newly prepared cardanol is a light yellow slightly transparent oily liquid with a slight pungent smell and a viscosity of about 94mPa·s at 25°C. Cardanol structural formula as shown in (I), contains phenolic hydroxyl group and alkyl long-chain structure in its structural unit, not only has the rigidity of benzene ring, but also has the flexibility that long carbon chain brings, and because it is a renewable resource , rich in sources and low in price, so it has a wide range of applications and has very important application value...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J161/14C09J11/08
CPCC09J11/08C09J161/14C08L79/04
Inventor 蔡学广张大勇刘晓辉荣立平王刚李欣朱金华赵颖米长虹
Owner INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
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