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High-toughness phenolic resin, and preparation method and application thereof

A phenolic resin, high-toughness technology, applied in coatings and other directions, can solve the problems of high brittleness, long curing cycle, and limit the use of resin, and achieve the effect of improving grinding performance and life, fast curing speed, and overcoming large brittleness.

Active Publication Date: 2019-11-15
DYNEA GUANGDONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional phenolic resins are highly brittle after curing and have a long curing cycle, which limits the wider use of resins in coated abrasives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation method of high toughness phenolic resin, comprises the steps:

[0035] (1) 12 parts by weight of deionized water, 0.03 parts by weight of sodium bicarbonate, 1.2 parts by weight of sodium salt of alkylphenol ether sulfosuccinate, 30 parts by weight of monomer (15 parts by weight of methyl Acrylate+15 parts of styrene) are pre-emulsified to obtain a pre-emulsion;

[0036] (2) Add 0.12 parts by weight of ammonium sulfate to 3 parts by weight of deionized water to make an initiator solution for later use;

[0037] (3) 0.4 weight part sodium polymethacrylate is added to the deionized water of 2 weight parts, is made into protective colloid solution, for subsequent use;

[0038] (4) Add 7 parts by weight of deionized water, 2 parts by weight of protective colloid solution, and 4 parts by weight of pre-emulsion solution into the polymerization kettle, add 1.5 parts by weight of initiator solution when heated to 70°C, and initiate polymerization at 80°C ...

Embodiment 2

[0043] A kind of preparation method of high toughness phenolic resin, comprises the steps:

[0044] (1) Add 10 parts by weight of deionized water, 0.02 parts by weight of sodium bicarbonate, 1 part by weight of ammonium polyoxyethylene ether ammonium sulfate, and 20 parts by weight of monomers (12 parts of ethyl acrylate + 8 parts of propylene) into the pre-emulsification tank Nitrile) is pre-emulsified to obtain a pre-emulsion;

[0045] (2) Add 0.2 parts by weight of sodium persulfate to 4 parts by weight of deionized water to make an initiator solution for later use;

[0046] (3) 0.2 weight part of acetal polyvinyl alcohol is added to the deionized water of 1 weight part, is made into protective colloid solution, for subsequent use;

[0047] (4) Add 10 parts by weight of deionized water, 1 part by weight of protective colloid solution, and 3 parts by weight of pre-emulsion solution into the polymerization kettle, and add 2 parts by weight of initiator solution when heated t...

Embodiment 3

[0052] A kind of preparation method of high toughness phenolic resin, comprises the steps:

[0053] (1) Add 15 parts by weight of deionized water, 0.04 parts by weight of sodium bicarbonate, 2 parts by weight of sodium salt of alkylphenol ether sulfosuccinate, 40 parts by weight of monomer (15 parts of acrylonitrile) into the pre-emulsification tank +25 parts of styrene) are pre-emulsified to obtain a pre-emulsion;

[0054] (2) Add 0.2 parts by weight of ammonium sulfate to 4 parts by weight of deionized water to make an initiator solution for later use;

[0055] (3) 0.4 weight part sodium polymethacrylate is added to the deionized water of 5 weight parts, is made into protective colloid solution, for subsequent use;

[0056] (4) Add 10 parts by weight of deionized water, 2 parts by weight of protective colloid solution, and 5 parts by weight of pre-emulsion solution into the polymerization kettle, and add 2 parts by weight of initiator solution when heated to 80°C. Initiate...

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PUM

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Abstract

The invention discloses preparation and application of high-toughness phenolic resin. The preparation method comprises the following steps: preparation of a pre-emulsion, preparation of an initiator solution, preparation of a protective colloid solution, polymerization reaction and the like. According to the invention, phenolic resin is modified by using the protective colloid solution; the phenolic resin continuously synthesized by a one-step method is good in stability, good in leveling performance on various base materials, free of phase interface after being cured, high in bonding strengthand good in flexibility after being cured; and the grinding performance and the service life of an abrasive tool product coated with the resin are improved by 20% or above compared with the grindingperformance and the service life of an abrasive tool product coated with epoxy resin. The phenolic resin prepared by the method does not contain organic solvents, so that potential safety hazards in production are eliminated, meanwhile, the working environment of a using manufacturer is improved, and emission of harmful gas in tail gas is reduced. The high-toughness phenolic resin can replace solvent type epoxy resin and other solvent type resin to be widely applied to production of coated abrasive tool products, and the high-toughness phenolic resin is also suitable for industrial applicationof water-based paint, composite materials and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-toughness phenolic resin and its preparation method and application. Background technique [0002] Abrasive abrasives are known as "industrial teeth", and coated abrasives are known as "industrial beauticians". Coated abrasives refer to adhesives that adhere abrasives to flexible substrates. Abrasives, also known as flexible abrasives, are composed of substrates, abrasives, and binders. The binders used in coated abrasives mainly include: animal glue, synthetic resin, etc. Such as hide glue, urea-formaldehyde resin, phenolic resin, epoxy resin, alkyd resin, etc. [0003] At present, most of the water-resistant sandpaper, dry sandpaper, soft cloth and other products on the market use epoxy resin or alkyd resin as a binder in some processes. However, when using epoxy resin, xylene needs to be added as a solvent. Xylene is a flammable liquid, which is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G14/12C09D161/34C08F220/10C08F212/08C08F220/18C08F220/44C08F212/10
CPCC08G14/12C09D161/34C08F220/10C08F212/08C08F220/18C08F212/10C08F220/44
Inventor 边国民杨红玲林建明蒋水华杨晓燕陈可源陈澄
Owner DYNEA GUANGDONG
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