Epoxy plant oil modified phenol-formaldehyde resin, its preparation method and application

A technology of epoxidized vegetable oil and phenolic resin, used in circuit substrate materials, printed circuit components, etc., can solve the problems of poor stability and safety in the synthesis process, low resin crosslinking density, low product quality, etc., and achieve excellent electrical insulation. Performance, Low Water Absorption, Versatile Effects

Inactive Publication Date: 2007-11-07
SOUTH CHINA UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The development trend of epoxy vegetable oil modified phenolic resin is to develop toward the direction of mild condition and low cost, but the technology of existing epoxy vegetable oil modified phenolic resin still has reaction efficiency low, reaction time is long, product quality is not high, resin The disadvantages of low cross-linking density, poor stability and safety in the synthesis process

Method used

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  • Epoxy plant oil modified phenol-formaldehyde resin, its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0035] A kind of preparation method of epoxy vegetable oil modified phenolic resin, its step comprises:

[0036] (1) Phenol: formaldehyde solution (mass ratio concentration 37%): non-toxic acidic catalyst (a mixture of industrial grade adipic acid and industrial grade hydrochloric acid, mass ratio 5: 1) is added to the reactor in a mass ratio of 100: 50: 1.5 , control the reaction temperature to 80°C, heat and stir the reaction for 3 hours, and lower it to room temperature to obtain crude phenolic resin;

[0037] (2) Dehydration treatment: the crude phenolic resin obtained in step (1) is transferred to a vacuum still, and at a temperature of 70° C., vacuum distillation removes moisture under the conditions of a vacuum of 0.09 MPa until the crude phenolic resin water content Below 0.5%, drop to room temperature to obtain phenolic resin;

[0038](3) Epoxidized soybean oil modification treatment: 100g of phenolic resin obtained in step (2), weakly basic catalyst (the mixture of ...

Embodiment 2

[0040] A kind of preparation method of epoxy vegetable oil modified phenolic resin, its step comprises:

[0041] (1) Add phenol: formaldehyde solution (mass ratio concentration 37%): non-toxic acidic catalyst (industrial grade concentrated hydrochloric acid) into the reactor at a mass ratio of 100:20:0.05, control the reaction temperature to 100°C, and keep stirring for 5 hours , down to room temperature to obtain crude phenolic resin;

[0042] (2) Dehydration treatment: the crude phenolic resin obtained in step (1) is transferred to a vacuum still, and at a temperature of 100° C., vacuum distillation removes moisture under the conditions of a vacuum of 0.03 MPa until the crude phenolic resin water content Below 0.5%, drop to room temperature to obtain phenolic resin;

[0043] (3) Epoxidized soybean oil modification treatment: add 100 g of phenolic resin obtained in step (2) and 0.5 g of weakly basic catalyst (technical grade triethylamine) into the reactor, control the react...

Embodiment 3

[0045] A kind of preparation method of epoxy vegetable oil modified phenolic resin, its step comprises:

[0046] (1) Phenol: formaldehyde solution (mass ratio concentration 15%): non-toxic acidic catalyst (a mixture of industrial grade acetic acid and industrial grade benzenesulfonic acid, mass ratio 7: 1) is added to the reactor in a mass ratio of 100: 200: 10 , control the reaction temperature to 40°C, heat and stir the reaction for 8 hours, and cool down to room temperature to obtain crude phenolic resin;

[0047] (2) Dehydration treatment: the crude phenolic resin obtained in step (1) is transferred to a vacuum distillation still, and the temperature is 60° C., and the decompression distillation removes moisture under the condition of a vacuum of 0.09 MPa until the crude phenolic resin water content Below 0.5%, drop to room temperature to obtain phenolic resin;

[0048] (3) Epoxidized soybean oil modification treatment: 100 g of phenolic resin obtained in step (2), weakly...

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Abstract

The preparation method for phenolic resin modified by epoxy vegetable oil comprises: putting thephenol, formaldehyde and nontoxic acid catalyst into a reactor; controlling temperature and holding for 1-8h; cooling to room temperature to obtain the coarse phenolic resin; transferring the coarse product into vacuum distillation kettle to dewater for refine; adding the epoxy vegetable oil, phenolic resin and faintly-alkaline catalyst into the reactor; heating and holding; reacting till the specified range of gelling time; cooling and adding solvent and additive to obtain the target with wide application. This invention has well security and quality with low cost and high efficiency.

Description

technical field [0001] The invention relates to the field of preparation and application of modified phenolic resin, in particular to an epoxy vegetable oil modified phenolic resin and its preparation method and application. Background technique [0002] The base resin used in the production of paper-based copper-clad laminates is mainly composed of modified phenolic resins. Since the phenolic nuclei of ordinary phenolic resins are only connected by methylene groups, the rigidity of the molecules is extremely high, which increases the brittleness of the resin product. When it is used to manufacture paper-based copper-clad laminates, it exhibits shortcomings such as brittleness, high water absorption, and low electrical insulation performance, which makes it difficult to meet the needs of punching operations. Therefore, it is generally necessary to use drying oil to modify the resin. Among many drying oils, tung oil (also known as Chinese wood oil)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/32H05K1/03
Inventor 司徒粤胡剑峰陈焕钦曾汉维瞿金清
Owner SOUTH CHINA UNIV OF TECH
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