Cardanol modified phenolic resin for glass fiber reinforced plastic laminated materials and preparation method thereof

A fiberglass layer and phenolic resin technology, applied in the field of phenolic resin, can solve the problems of high cost of polyvinyl butyral, unfavorable resin storage stability, Na ion residue, etc., and achieve easy polishing, low cost, pure and transparent color Effect

Inactive Publication Date: 2014-07-30
SKSHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The synthesis of existing phenolic resins is mainly phenol, formaldehyde, NaOH, polyvinyl butyral, etc. The synthetic phenolic resins are very brittle, and the cost of toughened polyvinyl butyral is relatively high. The catalyst used is NaOH Strong base, the reaction is too violent, it is difficult to control, and there will be a lot of Na ions remaining, which is not good for the storage stability of the resin; therefore, the existing phenolic resin needs to be further improved

Method used

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  • Cardanol modified phenolic resin for glass fiber reinforced plastic laminated materials and preparation method thereof
  • Cardanol modified phenolic resin for glass fiber reinforced plastic laminated materials and preparation method thereof
  • Cardanol modified phenolic resin for glass fiber reinforced plastic laminated materials and preparation method thereof

Examples

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Effect test

specific Embodiment approach

[0021] A cardanol-modified phenolic resin for fiberglass laminated materials, which is formulated by the following components in parts by weight:

[0022]

[0023] The above-mentioned preparation method of the cardanol-modified phenolic resin used for FRP laminates is prepared according to the following method:

[0024] (1), phenol, cardanol, formaldehyde are added in reaction container, be heated up to 65-70 ℃ and stir evenly;

[0025] (2) Add ammonia water and react at a temperature of 80-85°C for 0.5-1.5 hours;

[0026] (3) After dehydration, add zinc stearate, then add dilute solvent and dilute to 50-60% solid content and then discharge.

[0027] The diluted solvent in the above components is one or any combination of ethanol, methanol, and n-butanol, wherein the volume concentration of ethanol is 95%, the mass fraction of methanol is 98%-99%, and the mass fraction of n-butanol is 99.9%. The phenol is phenol produced by Shanghai Gaoqiao Chemical Industry. The cardano...

Embodiment 1

[0029] Embodiment 1: a kind of cardanol-modified phenolic resin that is used for FRP laminated material, it is formulated by following components by weight and number ratio:

[0030]

[0031] A preparation method for a cardanol-modified phenolic resin for fiberglass laminates, prepared according to the following method:

[0032] (1), after preparing the materials, add phenol, cardanol, and 37% formaldehyde solution to the reaction kettle successively, heat up to 65°C, and stir evenly;

[0033] (2), add 20% ammonia solution, stop heating and stirring, rely on the exothermic reaction to heat up to 82 ° C, and keep warm for 0.5 hours;

[0034] (3), turn on the vacuum pump to depressurize to 0.8MPa for dehydration, add zinc stearate after dehydration, then dilute with ethanol to 50% solid content, and discharge.

[0035] Through the test of present embodiment, the present invention is used for the cardanol-modified phenolic resin of FRP laminated material each technical perfor...

Embodiment 2

[0037] Embodiment 2: a kind of cardanol-modified phenolic resin that is used for FRP laminated material, it is formulated by following components by weight and number ratio:

[0038]

[0039] A preparation method for a cardanol-modified phenolic resin for fiberglass laminates, prepared according to the following method:

[0040] (1), after preparing the materials, add phenol, cardanol, and 37% formaldehyde solution to the reaction kettle successively, heat up to 65°C, and stir evenly;

[0041] (2), add 20% ammonia solution, stop heating and stirring, rely on the exothermic reaction to heat up to 80°C, and keep the temperature for 1 hour;

[0042] (3), turn on the vacuum pump to depressurize to 0.8MPa for dehydration, add zinc stearate after dehydration, then dilute with n-butanol to 52% solid content, and discharge.

[0043] Through the test of present embodiment, the present invention is used for the cardanol-modified phenolic resin of FRP laminated material each technica...

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Abstract

The invention relates to a cardanol modified phenolic resin for glass fiber reinforced plastic laminated materials and a preparation method thereof. The cardanol modified phenolic resin for glass fiber reinforced plastic laminated materials is prepared from the following components in part by weight: 25-38 parts of phenol, 5-15 parts of cardanol, 35-48 parts of formaldehyde, 1-5 part of ammonium hydroxide, 0.02-0.3 part of zinc stearate, and 8-16 parts of a diluted solvent, wherein the diluted solvent is one or more of ethanol, methanol and n-butyl alcohol, the volume concentration of the ethanol is 95%, the mass fraction of the methanol is 98-99%, and the mass fraction of the n-butyl alcohol is 99.9%. The cardanol modified phenolic resin for glass fiber reinforced plastic laminated materials prepared according to the invention is good in flexibility and moldability, has no impurity residues, and is easily polished, and simply synthesized.

Description

technical field [0001] The invention relates to a phenolic resin used for glass-steel laminated materials, in particular to a cardanol-modified phenolic resin used for glass-steel laminated materials. Background technique [0002] Phenolic resin is a very important resin for laminated materials due to its easy availability of raw materials, diversified products, commensurate performance and price, and convenient construction; in 1872, German chemist Bayer (A.Baeyer) first synthesized phenolic resin, and in 1907 In 1910, Belgian-American Baekeland proposed the heating and curing method of phenolic resin to realize industrial production of phenolic resin. In 1910, Berlin, Germany built the world's first factory for synthesizing phenolic resin, creating an era of human synthesis of polymer compounds. Due to the different types of phenol and aldehyde, the type of catalyst, and the molar ratio of phenol to aldehyde, a variety of phenolic resins can be produced, including: novolac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/14C08K5/098C08G8/28C08G8/10
Inventor 洪杰周冬义
Owner SKSHU PAINT
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