Flame retardant rigid polyisocyanurate foam and preparation method thereof

A polyisocyanurate and rigid foam technology, applied in the field of flame retardant polyester foam, can solve the problems of weak compressive strength and tensile strength of rigid foam, high production cost, and many flame retardants, and achieve excellent resistance. The effect of combustion performance, low cost and excellent performance

Inactive Publication Date: 2018-08-14
江苏中昌绝热技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main polyols used in high flame-retardant polyisocyanurate rigid foams are generally aromatic polyester polyols, such as phthalic anhydride, terephthalic acid, etc., which are prepared by polycondensation with diols, and the production cost is high. , and due to the high isocyanate index and many flame retardants, while satisfying the flame retardant performance, the compressive strength and tensile strength of the prepared hard foam are weak

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A flame-retardant polyisocyanurate rigid foam, the flame-retardant polyisocyanurate rigid foam is composed of the following components by weight: 160 parts of polyisocyanate, 6 parts of polyether polyol, flame-retardant 18 parts of agent, 3 parts of catalyst, 2 parts of stabilizer, 18 parts of blowing agent;

[0034] The flame retardant is a nitrogen-containing flame retardant mixed with a phosphorus-containing flame retardant in a mass ratio of 1:1.

[0035] Specifically, the NCO content in the polyisocyanate is 32-35%.

[0036] Specifically, the polyether polyol polyoxypropylene diol and polyoxyethylene diol.

[0037]Specifically, the nitrogen-containing flame retardant is 3-morpholine-4-chloro-1,2,5-thiadiazole; the phosphorus-containing flame retardant is phosphorothioate triisocyanate.

[0038] Specifically, the catalyst is N,N-dimethylcyclohexylamine.

[0039] Specifically, the stabilizer is trisiloxane.

[0040] Specifically, the foaming agent is formed by mi...

Embodiment 2

[0045] A flame-retardant polyisocyanurate rigid foam, consisting of the following components by weight: 150 parts of polyisocyanate, 5 parts of polyether polyol, 15 parts of flame retardant, 2 parts of catalyst, 1 part of stabilizer, 15 parts of blowing agent;

[0046] The flame retardant is a nitrogen-containing flame retardant mixed with a phosphorus-containing flame retardant in a mass ratio of 1:1.

[0047] Specifically, the NCO content in the polyisocyanate is 32-35%.

[0048] Specifically, the polyether polyol polyoxyethylene diol, polytetrahydrofuran diol and polyoxyethylene triol.

[0049] Specifically, the nitrogen-containing flame retardant is diammonium hydrogen phosphate and 3-morpholine-4-chloro-1,2,5-thiadiazole; the phosphorus-containing flame retardant is ammonium dihydrogen phosphate and tri( 2,3-Dibromopropyl) phosphate.

[0050] Specifically, the catalyst is bis(2-dimethylaminoethyl)ether and triethanolamine.

[0051] Specifically, the stabilizer is amin...

Embodiment 3

[0057] A flame-retardant polyisocyanurate rigid foam, consisting of the following components by weight: 170 parts of polyisocyanate, 8 parts of polyether polyol, 20 parts of flame retardant, 3 parts of catalyst, 3 parts of stabilizer, 20 parts of blowing agent;

[0058] The flame retardant is a nitrogen-containing flame retardant mixed with a phosphorus-containing flame retardant in a mass ratio of 1:1.

[0059] Specifically, the NCO content in the polyisocyanate is 32-35%.

[0060] Specifically, the polyether polyol is polytetrahydrofuran diol and polyethylene oxide triol.

[0061] Specifically, the nitrogen-containing flame retardant is 3-morpholine-4-chloro-1,2,5-thiadiazole and melamine cyanurate; the phosphorus-containing flame retardant is sodium triphosphate and triphosphate thiophosphate isocyanate.

[0062] Specifically, the catalyst is N,N,N',N'-tetramethylalkylenediamine.

[0063] Specifically, the stabilizer is trisiloxane.

[0064] Specifically, the foaming a...

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PUM

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Abstract

The invention relates to flame retardant rigid polyisocyanurate foam and a preparation method thereof. The flame retardant rigid polyisocyanurate foam is prepared from the following components in parts by weight: 150-170 parts of polyisocyanate, 5-8 parts of polyether polyol, 15-20 parts of flame retardant, 2-3 parts of catalyst, 1-2 parts of stabilizer, and 15-20 parts of foaming agent. The flameretardant is prepared by mixing a nitrogen-containing flame retardant and a phosphorus-containing flame retardant at the mass ratio of 1:1. The preparation method comprises the following steps: S1, mixing an additive; and S2, preparing rigid polyurethane foam. The flame retardant rigid polyisocyanurate foam has the advantages of being good in flame retardant effect, high in rigid foam performanceand suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of flame-retardant polyester foam, in particular to a flame-retardant polyisocyanurate rigid foam and a preparation method thereof. Background technique [0002] Most polymer resins are flammable substances in case of fire. Flame-retardant resins can greatly reduce their flammability and make them self-extinguish after ignition, thereby inhibiting the spread of flames and reducing the hazards of smoke or toxic gases produced by combustion. Flame retardant technology often adds flame retardants or inorganic fillers, such as calcium carbonate, silicate, mica, etc., and can also be copolymerized and grafted with monomers with good flame retardancy (such as vinyl chloride), and highly flame-retardant resins blending etc. Plastic products, coatings, and adhesives made of flame-retardant resins are increasingly used in construction, transportation, electronic appliances, and household furniture. [0003] Flame r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/40C08G18/46C08J9/08C08J9/14C08K3/32C08K5/3492C08K5/47C08K5/521C08K5/5398C08G101/00
CPCC08G18/4018C08G18/4607C08G18/4808C08G18/4812C08G18/4825C08G18/4833C08G18/4854C08J9/08C08J9/141C08J9/148C08J2203/02C08J2203/144C08J2203/184C08J2375/08C08K3/32C08K5/34928C08K5/47C08K5/521C08K5/5398C08K2003/322C08K2003/324C08G2110/0025C08G2110/005
Inventor 牟孟孟蒋国红李宋光宋健王芝花牟坤斋
Owner 江苏中昌绝热技术工程有限公司
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