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Bromine-carbon pnenolic aldehyde epoxy powder fire-proof paint and preparation method thereof

The technology of bromocarbon novolac epoxy and bromocarbon novolac epoxy resin is applied in the field of preparation of bromocarbon novolac epoxy powder fireproof coatings, and can solve the problems of small molecular weight, aging decay, failure to achieve fire resistance and flame retardant, and the like. More cross-linking active sites, overcoming aging decay, and good decorative effect

Inactive Publication Date: 2008-09-03
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Existing fire retardant coatings often use additive flame retardant systems. Organic polymer film-forming substances, whether water-based, solvent-based, or powder-based, do not have flame-retardant effects. However, additive flame-retardant systems have low relative molecular weights and cannot form coatings Leakage, migration, volatilization, etc. will occur after the fire, and it will not achieve the due effect of fire prevention and flame retardancy in the event of a fire, and there will be aging attenuation

Method used

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  • Bromine-carbon pnenolic aldehyde epoxy powder fire-proof paint and preparation method thereof
  • Bromine-carbon pnenolic aldehyde epoxy powder fire-proof paint and preparation method thereof

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preparation example Construction

[0044] The preparation method of bromocarbon novolac epoxy powder fireproof coating of the present invention, prepares materials according to above-mentioned formula, and its steps are:

[0045] (1) Add p-bromophenol and bisphenol A to the reactor, then add formaldehyde (37%), stir and heat up to dissolve, dissolve oxalic acid in hot water and add it to the reactor; the temperature is raised to 80°C, and the system automatically heats up to 98°C, Keep reflux at 98-100°C for 2 hours; cool down to 75°C, add hydrochloric acid, raise the temperature of the system to 98°C and keep for 15 minutes, take a sample and measure the sample until it is not sticky in 30°C water, wash it twice with cold water, use 10 % sodium hydroxide solution to neutralize to pH = 7-7.5, continue to wash 5 times, the washing temperature is 60-70 °C; vacuum dehydration, the maximum temperature does not exceed 130 °C, the softening point of the sample is above 100 °C, release the vacuum, cool down Feed to ob...

Embodiment 1

[0052](1) Add 392.8kg of p-bromophenol and 168.0kg of bisphenol A to the reactor, then add 184.0kg of formaldehyde (37%), stir and heat up to dissolve, dissolve 16.0kg of oxalic acid with hot water and add to the reactor; heat up to 80°C , the system heats up to 98°C by itself, and maintains reflux at 98-100°C for 2 hours; cools down to 75°C, adds 39.2kg of hydrochloric acid, heats up the system to 98°C and maintains it for 15 minutes, takes a sample to measure the sample until it is not sticky in 30°C water, and washes it with cold water 2 times, neutralize with 10% sodium hydroxide solution to pH = 7-7.5, continue to wash 5 times, the washing temperature is 60-70°C; vacuum dehydration, the maximum temperature does not exceed 130°C, and the softening point is above 100°C by sampling. Release the vacuum, cool down and discharge to obtain bromocarbon phenolic resin.

[0053] (2) Put 230.4kg of bromocarbon phenolic resin and 104.8kg of epichlorohydrin into the reaction kettle, h...

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Abstract

The invention provides a bromine carbon phenolic aldehyde epoxy powder fire-retardant coating and preparation method, comprising(by weight percentage): bromine carbon phenolic aldehyde epoxy resin 25.0-50.0%, E-12 epoxy resin 5.0-20.0%, ammonium polyphosphate 12.0-21.0%, melamine 8.0-14.0%, di-pentaerythritol 4.0-7.0%, curing agent 10.0-15.0%, curing promoter0.02-0.05%, flow agent 0.5-2.0%, benzoin 0.3-0.5%, titanium dioxide 5.0-10.0%. The preparation method comprises: getting the materials ready; mixing bromine carbon phenolic aldehyde epoxy resin, E-12 epoxy resin, curing agent, flow agent for 1-3 minutes at high speed; mixing benzoin and titanium dioxide for 3-5 minutes; adding ammonium polyphosphate, melamine, di-pentaerythritol and curing promoter for 1-2 minutes; adding the mixture into the extruder to fuse and extrude, finally the fused material being obtained; tabletting the fuse material by tablet machine, cooling, crushing, grinding, screening to obtain the bromine carbon phenolic aldehyde epoxy powder fire-retardant coating.

Description

technical field [0001] The invention relates to a fireproof coating, in particular to a preparation method of bromocarbon novolac epoxy powder fireproof coating. Background technique [0002] Bromocarbon phenolic epoxy powder fire retardant coating is a new type of fire retardant coating that does not contain solvent, is sprayed in powder state, and is heated and fused to form a film. It is environmentally friendly, has no waste of organic solvents, is easy to realize mechanization, and has high efficiency (thick coating) The advantages. [0003] In the patent CN1380370A fireproof powder coating and its production process, the intumescent fireproof coating is based on epoxy resin or epoxy polyester resin or polyester resin, and carbon forming agent, foaming agent and catalyst are added to obtain fireproof coating, which is used in refrigerators , Air conditioners and other products. [0004] Patent CN 1594452A discloses a kind of subpackage type tunnel fireproof coating, w...

Claims

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Application Information

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IPC IPC(8): C09D163/04C09D5/03C09D5/18
Inventor 杨保平崔锦峰郭军红周应萍崔定伟赵坤
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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