High flame retardant polyisocyanurate rigid foam and preparation method thereof

A polyisocyanurate and rigid foam technology, applied in the field of polyisocyanurate rigid foam, can solve the problems of easy settlement of solid flame retardants, inability to carry out industrial production, poor environmental protection, etc., and achieve fluidity Good, appropriate degree of cross-linking, improved flame retardant performance

Inactive Publication Date: 2016-02-24
SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system can reach an oxygen index of 33 or more, but the composite material has the disadvantage that the solid flame retardant is easy to settle. It is limited to the preparation in the laboratory mold and cannot be industrialized. Moreover, the reactive flame retardant containing bromine is used, which is poor in environmental protection.

Method used

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  • High flame retardant polyisocyanurate rigid foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0065] The raw materials involved in the following examples are:

[0066] Polyester polyol 1: Modified phthalic anhydride polyester polyol, the hydroxyl value is 230-250mgKOH / g, the functionality is 2, the viscosity at 25°C is about 3000mPa.s, and the average molecular weight is 400- 500, product brand HF-8725, purchased from Zhejiang Huafeng New Material Co., Ltd.

[0067] Polyester polyol 2: modified phthalic anhydride type polyester polyol, the hydroxyl value is 230-250mgKOH / g, the functionality is 2, the viscosity at 25°C is about 3000mPa.s, and the average molecular weight is 400- 500, product brand HF-8724, purchased from Zhejiang Huafeng New Materials Co., Ltd.

[0068] Polyester polyol 3: phthalic anhydride type polyester polyol, the hydroxyl value is 190-200mgKOH / g, the functionality is 2, the viscosity at 25°C is about 15000mPa.s, the average molecular weight is 500-600, the product Brand HF-8020, purchased from Zhejiang Huafon New Materials Co., Ltd.

[0069] Pol...

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Abstract

The invention discloses a high-flame-retardance polyisocyanurate hard foam easy for industrialized production and a preparation method thereof. The high-flame-retardance polyisocyanurate hard foam is prepared from a white material and polyisocyanates according to a mass ratio of 1:1.2-1:1.8 at 10-30 DEG C by utilizing a polyurethane low-pressure foaming machine, wherein the white material employs at least one kind of polyester polyol, at least one kind of liquid fire retardants and a solid fire retardant coated with red phosphorus capable of being conveniently dispersed in the liquid raw material. The high-flame-retardance polyisocyanurate hard foam provided by the invention has excellent flame retardance with the oxygen index larger than 30, and also has good dimension stability and thermal insulation performance while with a relatively low density.

Description

technical field [0001] The invention relates to the field of polyisocyanurate rigid foam, in particular to a highly flame-retardant (oxygen index greater than 30, B1 grade) polyisocyanurate rigid foam material and a preparation method thereof. Background technique [0002] Extensive application of thermal insulation materials is an important way to improve energy utilization efficiency and reduce building energy consumption. Organic thermal insulation materials have attracted much attention in scientific research and industry because of their superior thermal insulation properties. Among the existing organic insulation materials, polyurethane insulation materials have small thermal conductivity, light density, high mechanical properties, good water resistance and aging resistance, and are widely used internationally. In recent years, polyurethane insulation materials have also been vigorously promoted in China, and the consumption has increased rapidly year by year. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/09C08K9/10C08K3/02C08K5/521C08K5/523C08J9/14C08G101/00
CPCC08G18/092C08G18/4208C08G18/664C08G18/6644C08J9/144C08J2203/142C08J2375/06C08K3/02C08K5/521C08K5/523C08K9/10C08K2003/026C08G2110/0025C08G2110/005C08G2115/02
Inventor 吕晓奇朱彦肖丽群戴胜唐劲松杨清文唐志勇尤金明
Owner SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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