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Structural flame retardant type spray coating material of polyurethane elastomer and construction method

A polyurethane elastomer and spraying polyurethane technology are applied in the field of structural flame-retardant spraying polyurethane elastomer materials and their construction, which can solve the problems of unfavorable mechanical properties of materials, shortening the storage time of raw materials, unstable chemical properties, etc., and achieve low comprehensive performance. , good application prospects, the effect of excellent comprehensive performance

Inactive Publication Date: 2005-01-12
JIANGSU CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned flame retardants often have adverse effects in the spray polyurea elastomer system. Its disadvantages are: 1. The maximum viscosity of the spray polyurea elastomer system is not higher than 2000psi, and the introduction of solid flame retardants into the system It will lead to an increase in viscosity, and if it is not handled properly, it will lead to uneven mixing; 2. The addition of flame retardants will have an adverse effect on the mechanical properties of the material to a certain extent; 3. The added flame retardants are easy to settle, chemically unstable, shorten raw material storage time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 30.8 parts of MDI-100 and 27.0 parts of MDI-50 from Yantai Wanhua Polyurethane Co., Ltd. into a nitrogen-filled reactor, heat it to 60°C, add 42.2 parts of polyether polyols with an equivalent of 1000 to the kettle, drop After the addition is complete, keep the temperature between 60 and 90 for 2 to 3 hours to obtain a prepolymer with an NCO% of 15%, which is the A component. Component B is composed of 45.3 parts of flame retardant polyether, 26.1 parts of diethyltoluene diamine (DETDA), 11.9 parts of polyoxypropylene triamine (TA-5000), and 16.7 parts of polyoxypropylene diamine (DA-2000). Stir to combine. The two components A and B are sprayed by the 20-35 main engine and the GX-7 spray gun of Gusmer Company of the United States at a ratio of 1:1 (volume ratio) to form a structural flame-retardant polyurethane elastomer. The system obtains a smooth or granular surface with a uniform appearance through the adjustment of the distance and angle of the spray gun, whi...

Embodiment 2

[0030]Add 31.5 parts of MDI-100 and 13.2 parts of MDI-50 from Yantai Wanhua Polyurethane Co., Ltd. into a nitrogen-filled reactor, heat it to 60°C, and add 55.3 parts of polyether polyol with an equivalent of 1000 to the reactor dropwise. After the dropwise addition, keep the temperature at 60-90° C. for 3 hours to obtain a prepolymer with an NCO% of 10.5, which is the A component. Component B is a mixture of 50.6 parts of flame retardant polyether, 21.2 parts of polyoxypropylene diamine (DA-2000), 11.8 parts of polyoxypropylene triamine (TA-5000), and 16.4 parts of diethyltoluene diamine (DETDA). Made by stirring. The two components A and B are sprayed by the 20-35 main engine and the GX-7 spray gun of Gusmer Company of the United States at a ratio of 1:1 (volume ratio) to form a structural flame-retardant polyurethane elastomer. Mainly used in roof waterproofing, factory floors, water treatment facilities and other fields. The main physical properties of this polyurethane ...

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PUM

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Abstract

A fire-resisting and spraying type of polyurethane elastomer consists of A composition being semi-prepolymer prepared from low functional degree of polyisocyanic acid ester and polyether-polyalcohol as well as B composition prepared from amine chain extender, fire resisting polyether and end azyl polyether. The application method includes mixing the two compositions uniformly, sending the mixture to spraying gun by material conveying tube, increasing pressure to spray mixture on object surface for forming fire resisting type of sprayed polyurethane and polyether elastomer material instantly.

Description

1. Technical field [0001] The invention relates to a polyurethane synthetic material, in particular to a structural flame-retardant spray polyurethane elastomer material and a construction method thereof. 2. Background technology [0002] Spraying polyurethane elastomer technology began in the early 1980s, it is a new polyurethane elastomer processing technology. The traditional processing of polyurethane elastomers is either pouring and molding under heating conditions, or manual coating and molding at room temperature, while the spray molding technology requires that the A and B components of the sprayed raw materials pass through the mixing chamber of the spray gun under high pressure. Impact mixing, and then spray on the base surface after atomization to solidify and shape. [0003] Spray polyurethane elastomer materials are mainly based on a two-component sprayable system composed of an isocyanate component and an amino chain extender (or hydroxyl compound) component. ...

Claims

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Application Information

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IPC IPC(8): C09D175/08
Inventor 郁维铭朱杰黄荔玲胡杰
Owner JIANGSU CHEM RES INST
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