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Preparation of single-component fire retardation polyurethane foam sealant

A technology of polyurethane foam and flame-retardant polyester, which is applied in other chemical processes, chemical instruments and methods, etc., can solve problems such as increased viscosity of materials, decreased storage stability, and brittle foam, and achieves good foam elasticity and flame-retardant properties high effect

Inactive Publication Date: 2014-07-16
上海联合气雾制品灌装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of flame retardants can significantly improve the flame retardant performance of polyurethane foam, but it will also lead to a decrease in the mechanical properties and adhesive properties of polyurethane foam; A series of defects, such as foam brittleness, increased material viscosity, decreased storage stability, poor foam appearance, uneven cells, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] According to formula 1, mix polyol, flame retardant, foam stabilizer, catalyst and other components evenly to prepare polyether composite material; add composite polyether and polymethyl diisocyanate into the aerosol tank in sequence according to the proportion, press on Fill the valve with dimethyl ether and dichlorodifluoromethane (CFC12) in sequence, shake and mix for 1 minute, and test the performance of the product after standing for 24 hours.

Embodiment 2-4

[0021] Listed formula by table 1, technological process is with example 1. In Example 2-4, by changing the type and amount of flame retardant polyols and using different types of flame retardants, products with different properties were obtained. The test results are shown in Table 1.

Embodiment 5-7

[0023] Listed formula by table 1, technological process is with example 1. Examples 5-7 use only polyester polyol or polyether polyol and additive flame retardant. Compared with the foams using flame-retardant polyester polyols and flame-retardant polyether polyols, the flame-retardant performance of the foams prepared in Examples 5-7 is poor.

[0024] Table 1 The formula and performance of one-component flame-retardant polyurethane foam sealant

[0025] Example

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Abstract

The present invention relates to a preparation method of a single-component fire retardation polyurethane foam sealant. According to the present invention, the single-component fire retardation polyurethane foam sealant is prepared by adopting the following raw materials: a fire retardation polyester polyol, a fire retardation polyether polyol, a polyester polyol, a polyether polyol, a fire retardation agent, a foam stabilizer, a catalyst, and a foaming agent; the preparation method is characterized in that the reaction type fire retardation agent containing chlorine, bromine, phosphorus, nitrogen and other fire retardation elements and the addition-type fire retardation agent are concurrently adopted, and the fire retardation performance and the use performance of the foams are improved by optimizing the ratio of various raw materials; and the single-component fire retardation polyurethane foams prepared through the preparation method have high oxygen index and low smoke density.

Description

technical field [0001] The invention relates to a preparation method of a one-component flame-retardant polyurethane foam caulking agent. Background technique [0002] One-component polyurethane foam sealant is a special variety of polyurethane foam, which is the product of the combination of polyurethane technology and aerosol technology. One-component polyurethane foam sealant has multiple functions such as joint filling, bonding, sealing, heat insulation, and sound insulation. It is an environmentally friendly, energy-saving, and easy-to-use building material. [0003] Polyurethane foam is an organic polymer material. Polyurethane foam without flame retardant treatment is a flammable material with an oxygen index of about 17. It will release a large amount of toxic gas and smoke when burned. Polyurethane foam is a commonly used building material, and the research on its flame retardancy has received extensive attention at home and abroad. In recent years, as my country'...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/48C08G18/42C08K3/32C08K5/3492C08K3/02C08K5/521C08J9/14C08L75/06C08L75/08C09K3/10
CPCC08G18/4018C08G18/4202C08G18/4804C08G2101/00C08J9/142C08J9/144C08J2203/12C08J2203/142C08J2203/182C08J2375/06C08J2375/08
Inventor 丁学文张捷晏义青
Owner 上海联合气雾制品灌装有限公司
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