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Modified AHP based on epoxy-silicone resin prepolymer microencapsulation and preparation method and application thereof

An epoxy silicone resin, microencapsulation technology, applied in the direction of dyeing organosilicon compound treatment, fibrous filler, etc., can solve the problems of large equipment investment, high production cost, unfavorable uniform dispersion and processing, etc., and achieve excellent flame retardant performance. , reduce flame retardant properties, improve the effect of anti-aging

Active Publication Date: 2017-09-01
SHIFANG TAIFENG NEW FLAME RETARDANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these coating methods are all carried out in the liquid phase, and the production process involves filtration, drying, and solvent treatment. The process procedures are trivial, the equipment investment is large, and the production cost is high, which is not conducive to resource-saving production.
Melamine-formaldehyde resin-coated AHP has the problem of using formaldehyde, which is not conducive to environmental friendliness
After coating AHP with polyurethane, the fluidity of the powder will become very poor, relaxation and agglomeration will occur, which is not conducive to uniform dispersion and processing

Method used

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  • Modified AHP based on epoxy-silicone resin prepolymer microencapsulation and preparation method and application thereof
  • Modified AHP based on epoxy-silicone resin prepolymer microencapsulation and preparation method and application thereof
  • Modified AHP based on epoxy-silicone resin prepolymer microencapsulation and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]This embodiment provides a method for preparing AHP based on microencapsulation modification of epoxy silicone resin prepolymer, including:

[0041] (1) Preparation of epoxy silicone resin prepolymer: take 500g bisphenol A type epoxy resin E 44 , use a small kneader to stir and heat to 90°C to make it have excellent fluidity, use a watering can to spray 300g of methylphenyl silicone resin intermediate IC368 into the kneader while stirring, and then add 16g of butyl titanate as Catalyst, react at 90°C for 1 hour, then raise the temperature to about 135°C for 3-4 hours, and obtain a milky white translucent viscous epoxy silicone resin prepolymer;

[0042] After the synthetic epoxy-silicon prepolymer was left to stand at room temperature and cooled to room temperature, after washing off the low-molecular-weight organic matter on the surface of the epoxy-silicon prepolymer with 600ml water (equally divided 3 times) and 200ml ethanol (equally divided 2 times), After the expe...

Embodiment 2

[0045] This embodiment provides a method for preparing AHP based on microencapsulation modification of epoxy silicone resin prepolymer, including:

[0046] (1) Preparation of epoxy silicone resin prepolymer: with reference to the steps of Example 1;

[0047] (2) Preparation of modified AHP: Weigh 1000g of AHP, add it to a small kneader, stir at high speed, heat up to 90°C, then weigh 45g of epoxy silicone resin prepolymer and 5g of 2-ethyl-4 methylimidazole , after heating to 90°C, use a watering can to spray on the high-speed stirring AHP, and heat up to 150°C-170°C and then cure for 3 hours to obtain microencapsulated modified AHP based on epoxy silicone resin prepolymer, marked as 5% ESi-AHP.

Embodiment 3

[0049] This embodiment provides a method for preparing AHP based on microencapsulation modification of epoxy silicone resin prepolymer, including:

[0050] (1) Preparation of epoxy silicone resin prepolymer: with reference to the steps of Example 1;

[0051] (2) Preparation of modified AHP: Weigh 1000g of AHP, add it into a small kneader, stir at high speed, heat up to 90°C, then weigh 54g of epoxy silicone resin prepolymer and 6g of 2-ethyl-4 methylimidazole , after heating to 90°C, use a watering can to spray on the high-speed stirring AHP, and heat up to 150°C-170°C and then cure for 3 hours to obtain microencapsulated modified AHP based on epoxy silicone resin prepolymer, marked as 6% ESi-AHP.

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Abstract

The invention relates to the technical field of flame retardant modification and provides modified AHP based on epoxy-silicone resin prepolymer microencapsulation and a preparation method and application thereof. The preparation method comprises the steps of mixing epoxy resin, an organosilicone reactive intermediate and a catalyst and carrying out first reaction; raising the temperature and then carrying out second reaction until an epoxy-silicone resin prepolymer is generated; and mixing the AHP with the epoxy-silicone resin prepolymer and a curing agent at the ratio to form a mixture, raising the temperature for carrying out curing reaction. The preparation method is simple in process program, low in production cost and beneficial to resource-saving production, the prepared modified AHP has excellent flame retardant property. The modified AHP based on epoxy-silicone resin prepolymer microencapsulation can be used as a flame retardant.

Description

technical field [0001] The invention belongs to the technical field of flame retardant modification, and in particular relates to AHP modified by microencapsulation of epoxy silicone resin prepolymer and its preparation method and application. Background technique [0002] Hypophosphite flame retardant represented by aluminum hypophosphite (AHP) is an emerging inorganic phosphorus-containing flame retardant in recent years, and has attracted much attention due to its low cost and high efficiency. During the combustion process, AHP is heated and decomposed to generate phosphate and pyrophosphate to cover the surface of the substrate to prevent the substrate from burning. Then it reacts with the carbon-forming polymer matrix to promote the formation of more carbon residues. At the same time, the molten phosphate and pyrophosphate can enhance the strength and stability of the carbon residues and reduce the risk of fire to a certain extent. Compared with the more expensive orga...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K3/32C09C1/40C09C3/12C08G77/38C08L67/02
CPCC08G77/38C08K3/32C08K9/10C08L2201/02C08L2201/08C09C1/40C09C3/12C08L67/02
Inventor 陈荣义黄剑袁明强何杰
Owner SHIFANG TAIFENG NEW FLAME RETARDANT