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A kind of preparation method of environment-friendly low-viscosity phenolic impregnated resin

A resin-impregnated, low-viscosity technology, applied in the field of composite resin preparation, to achieve the effects of stable exotherm, shortened time and improved efficiency

Active Publication Date: 2019-01-25
安徽复材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the prepared glass fiber impregnated phenolic resin has good stability and storage properties, and its products also have the characteristics of good flexibility, bright luster, uniform penetration, good lamination, long storage time, and high strength, but still use Ethanol as a raw material still does not solve the above-mentioned technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing an environment-friendly low-viscosity phenolic impregnated resin, comprising the following steps:

[0022] (1) Prepare materials according to the following components and contents:

[0023] 100g of phenol, 50g of paraformaldehyde, 8g of catalyst, and 15g of amines, wherein the paraformaldehyde used is solid formaldehyde with a mass fraction of 96%, and the rest is a small amount of water and some impurities, which do not affect the synthesis of the resin. The catalyst is an amine catalyst, and what is used in this embodiment is N,N-dimethylethanolamine, and the amine material is polyimide;

[0024] (2) Phenol and catalyst are placed in the reactor, and the temperature of the reactor is controlled to be 50° C.;

[0025] (3) add paraformaldehyde in reactor, control paraformaldehyde to add in 1h, and the temperature of reactor remains constant in the addition process;

[0026] (4) After adding paraformaldehyde, keep the temperature of the reactor a...

Embodiment 2

[0028] A method for preparing an environment-friendly low-viscosity phenolic impregnated resin, comprising the following steps:

[0029] (1) Prepare materials according to the following components and contents:

[0030] 100g of phenol, 52g of paraformaldehyde, 10g of catalyst, and 20g of amines, wherein the paraformaldehyde used is solid formaldehyde with a mass fraction of 96%, and the rest is a small amount of water and some impurities, which do not affect the synthesis of the resin. The catalyst is an amine catalyst, and what is used in this embodiment is N,N-dimethylethanolamine, and the amine material is polyimide;

[0031] (2) Phenol and catalyst are placed in the reactor, and the temperature of the reactor is controlled to be 60° C.;

[0032] (3) add paraformaldehyde in reactor, control paraformaldehyde to add in 1h, and the temperature of reactor remains constant in the addition process;

[0033] (4) After adding paraformaldehyde, keep the temperature of the reactor ...

Embodiment 3

[0035] A method for preparing an environment-friendly low-viscosity phenolic impregnated resin, comprising the following steps:

[0036] (1) Prepare materials according to the following components and contents:

[0037] 100g of phenol, 60g of paraformaldehyde, 12g of catalyst, and 30g of amines, wherein the paraformaldehyde used is solid formaldehyde with a mass fraction of 96%, and the rest is a small amount of water and some impurities, which do not affect the synthesis of the resin. The catalyst is an amine catalyst, and what is used in this embodiment is N,N-dimethylethanolamine, and the amine material is polyimide;

[0038] (2) Phenol and catalyst are placed in the reactor, and the temperature of the reactor is controlled to be 60° C.;

[0039] (3) add paraformaldehyde in reactor, control paraformaldehyde to add in 1h, and the temperature of reactor remains constant in the addition process;

[0040] (4) After adding paraformaldehyde, keep the temperature of the reactor ...

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Abstract

The invention relates to a preparation method of an environment-friendly type low viscosity phenolic impregnating resin, which includes following steps of: (1) preparing materials according to the following components and weight parts: 100 parts of phenol, 50-60 parts of paraformaldehyde, 8-12 parts of a catalyst, and 15-30 parts of an amine substance; (2) putting the phenol and the catalyst in a reaction vessel, and controlling the temperature of the reaction vessel to be 50-60 DEG C; (3) adding the paraformaldehyde into the reaction vessel, and maintaining the temperature of the reaction vessel constant during an addition process; and (4) maintaining the temperature of the reaction vessel between 65 and 75 DEG C and carrying out reaction for 2 hours, adding the amine substance, heating the reaction vessel to 85-95 DEG C and carrying out the reaction for 2 hours, then cooling the reaction vessel to a room temperature, and preparing and obtaining the environment-friendly type low viscosity phenolic impregnating resin. Compared with the prior art, the preparation method of the environment-friendly type low viscosity phenolic impregnating resin effectively solves the problem that a large amount of waste water is generated in the phenolic impregnating resin synthesis, improves the resin synthetic efficiency, and solves the problem that a solvent is needed to be added into the phenolic impregnating resin to reduce the viscosity.

Description

technical field [0001] The invention relates to a method for preparing composite resin, in particular to an environment-friendly method for preparing low-viscosity phenolic impregnated resin. Background technique [0002] The phenolic impregnated resins currently produced mostly use liquid formaldehyde, and solvents such as ethanol are added to reduce the viscosity of the resin, which will cause waste water during the production of the resin and reduce production efficiency, and the resin will volatilize the solvent during use, reducing the fire resistance of the product sex. [0003] Chinese patent CN101113080A discloses glass fiber impregnated phenolic resin, the glass fiber impregnated phenolic resin is made from A phenolic resin, B phenolic resin, hexamethylenetetramine, toughening agent, ethanol and other raw materials. B phenolic resin also contains a silane coupling agent as a reinforcing agent. Although the prepared glass fiber impregnated phenolic resin has good s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/10
Inventor 杨金平毛建东
Owner 安徽复材科技有限公司
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