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Novel flame-retardant polyurethane adhesive and preparation method thereof

A technology of polyurethane adhesives and reactive flame retardants, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc. Sex and glass transition temperature and other issues

Inactive Publication Date: 2014-12-24
太仓康盛化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some polyurethane adhesives have undergone a certain flame-retardant treatment, their flame-retardant properties are average, and after flame-retardant treatment, the pot life, thermal stability and glass transition temperature of polyurethane adhesives are greatly affected, and the overall performance is average.

Method used

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  • Novel flame-retardant polyurethane adhesive and preparation method thereof

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preparation example Construction

[0016] figure 1 It is a process step diagram of a method for preparing a novel flame-retardant polyurethane adhesive in an embodiment of the present invention; the polyurethane adhesive is prepared from polytetrahydrofuran diol 1000, toluene diisocyanate, a reactive flame retardant, a chain extender and a crosslinking agent. The reactive flame retardant is dibromoneopentyl glycol, the chain extender is 1,4-butanediol, and the crosslinking agent is trimethylolpropane, and the preparation method comprises the following steps : a) preparing component A, b) preparing component B, and c) preparing polyurethane adhesive.

[0017] The new flame-retardant polyurethane adhesive mentioned in the present invention uses polytetrahydrofuran diol 1000 and toluene diisocyanate as main raw materials, and introduces reactive flame retardant dibromoneopentyl glycol, chain extender 1,4-butanediol, cross-linked Agent trimethylolpropane is prepared by semi-prepolymer method. In the preparation p...

Embodiment

[0019] The specific preparation method is as follows:

[0020] a) Preparation of component A, the specific preparation process is as follows: according to the mass percentage, first put 39.8% polytetrahydrofuran diol 1000, 47.8% toluene diisocyanate, and 12.4% reactive flame retardant into the reaction kettle, heat to 80 °C, Stir quickly and evenly; then react under nitrogen protection for 15 minutes; and finally vacuum degas for 30 minutes to obtain the A-component polyisocyanate prepolymer, which is sealed and stored for later use.

[0021] b) Preparation of component B, the specific preparation process is: according to the mass percentage, first put 64.8% polytetrahydrofuran diol 1000, 19.6% reactive flame retardant, 7.8% chain extender, 7.8% crosslinking agent into the reactor , heated to 80°C; then stirred at 400r / min for 20min, and mixed evenly to obtain a colorless and transparent liquid of component B, which was sealed and stored for later use.

[0022] c) Prepare the...

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Abstract

The invention provides a novel flame-retardant polyurethane adhesive and a preparation method thereof. The novel flame-retardant polyurethane adhesive is prepared from polytetrahydrofuran diol 1000, toluene diisocynate, a reaction type flame retardant, a chain extender and a cross-linking agent, wherein the reaction type flame retardant is dibromoneopentyl glycol; the chain extender is 1,4-butanediol; the cross-linking agent is trimethylolpropane. The preparation method comprises the following steps: (a) preparing a component A; (b) preparing a component B; and (c) preparing the polyurethane adhesive. The invention discloses the novel flame-retardant polyurethane adhesive and the preparation method thereof. The polyurethane adhesive is simple and feasible in production process, is not only excellent in flame retardant property, but also relatively long in service life, relatively good in thermal stability and relatively low in glass-transition temperature.

Description

technical field [0001] The invention relates to an adhesive, in particular to a novel flame-retardant polyurethane adhesive and a preparation method thereof, belonging to the technical field of adhesives. Background technique [0002] As an indispensable chemical product for the development of the national economy, adhesives are widely used in various fields of the national economy. Among them, polyurethane adhesives are a very widely used bonding material. And isocyanate groups, and these two groups have the characteristics of strong polarity and chemical activity, and hydrogen bonds can be formed between molecules, so they have good chemical adhesion to many materials such as leather, foam, glass, metal, etc. The raw materials for preparing polyurethane adhesives are generally polyols, chain extenders and isocyanates. Polyols are the main raw materials for preparing polyurethane adhesives. Because of their different molecular structures, their properties are also different...

Claims

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Application Information

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IPC IPC(8): C09J175/08C08G18/76C08G18/66C08G18/48C08G18/32
Inventor 张敏
Owner 太仓康盛化工有限公司
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