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Flame retardant polyol composition and preparation method and application thereof

A flame-retardant polyol and composition technology, applied in the field of polyurethane foam, can solve the problems of complex preparation process, high flame-retardant cost, and general flame-retardant effect, and achieve good comprehensive performance, low oxygen index, and improved flame-retardant performance Effect

Active Publication Date: 2018-12-28
HAIER SMART HOME CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the flame retardant cost of the reactive flame retardant in the prior art is high, the preparation process is complicated, the flame retardant effect is general, the research and development is low cost, no by-products, the process is simple and the flame retardant polyol preparation technology with high flame retardant performance of great significance

Method used

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  • Flame retardant polyol composition and preparation method and application thereof
  • Flame retardant polyol composition and preparation method and application thereof
  • Flame retardant polyol composition and preparation method and application thereof

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preparation example Construction

[0073] The second embodiment of the present invention discloses the preparation method of the above-mentioned flame retardant polyol composition, which specifically includes the following steps:

[0074] Add epoxy-based substances into the reactor, and keep the reaction temperature in the reactor at 70-80°C;

[0075] Add phosphorus-containing small molecules dropwise, and the dropwise addition is completed after 0.5-1 hour. Raise the temperature of the reactor to 90°C and react for 3-5 hours;

[0076] Reduce the temperature of the reactor and discharge.

[0077] The third embodiment of the present invention discloses the application of the above-mentioned flame-retardant polyol composition or the flame-retardant polyol composition obtained by the above-mentioned preparation method in the preparation of polyurethane rigid foam.

[0078] Wherein, the parts by weight of the raw materials of the above-mentioned polyurethane rigid foam plastics are as follows:

[0079]

[0080...

Embodiment 1

[0088] The phosphoric acid small molecule that the embodiment of the present invention selects is diethyl phosphate, the epoxy-based substance is epoxy resin E51, and molecular weight is polyethylene glycol glycidyl ether of 300;

[0089] The preparation method of the flame-retardant polyol is as follows: 380g of epoxy resin E51 and 300g of polyethylene glycol glycidyl ether are added to the reaction kettle, then the reaction temperature is raised to 70°C, and 600g of diethyl phosphate is added dropwise. After the hour dropwise addition was completed, the temperature was raised to 90° C., the reaction was carried out for 4 hours, and the temperature was lowered to discharge.

[0090] The prepared flame-retardant polyol has a viscosity of 1500-2000mpa.s and a hydroxyl value of 550-600mgKOH / g.

Embodiment 2

[0092] The phosphoric acid small molecule that the embodiment of the present invention selects is dibutyl phosphate, and the epoxy-based material is the polyethylene glycol glycidyl ether that epoxy resin E51, molecular weight are 200;

[0093] The preparation method of the flame-retardant polyol is as follows: 380g of epoxy resin E51 and 200g of polyethylene glycol glycidyl ether are added to the reaction kettle, then the reaction temperature is increased to 70°C, and 800g of diethyl phosphate is added dropwise. After the hour dropwise addition was completed, the temperature was raised to 90° C., the reaction was carried out for 4 hours, and the temperature was lowered to discharge.

[0094] The prepared flame-retardant polyol has a viscosity of 1300-1600mpa.s and a hydroxyl value of 530-550mgKOH / g.

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Abstract

The invention discloses a flame retardant polyol composition composed of phosphorus-containing polyol and polyether polyol and further discloses a weight fraction ratio of the polyols. The phosphorus-containing polyol is phosphorus-containing flame-retardant polyol prepared by reacting phosphorus-containing small molecules with an epoxy substance, the viscosity of the phosphorus-containing flame-retardant polyol is 1500-3500 mPa s, and the hydroxyl value of the phosphorus-containing flame-retardant polyol is 400-600 mg KOH / g; the molar ratio of a hydroxyl group of the phosphorus-containing small molecules to an epoxy group of the epoxy substance is from 1:0.8 to 1:1. The invention also discloses a preparation method and application of the flame retardant polyol composition in polyurethanerigid foam. A flame retardant element is introduced into a molecular chain of polyurethane through a chemical reaction, high flame retardancy and stability during application are achieved, the development cost is low, there are no by-products, a process is simple, and the flame retardant performance is high.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam plastics, and in particular provides a flame-retardant polyol composition and a preparation method and application thereof. Background technique [0002] Polyurethane rigid foam is a low-density microporous urethane polymer material produced by reacting with isocyanate. It has light weight, low water absorption, good heat insulation, strong weather resistance, low thermal conductivity and good mechanical properties. Performance and chemical corrosion resistance, etc., are widely used in heat insulation materials for pipeline insulation, refrigeration equipment and buildings. However, the oxygen index of polyurethane rigid foam without flame retardant treatment is about 18, which is a flammable material; and a large amount of toxic gases (CO, NO, HCN, etc.) and dense smoke are released during the combustion process, which is harmful to people's life, health and property Safety has a grea...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G18/50C08G18/48C08J9/14C08G101/00
CPCC08G18/48C08G18/4804C08G18/5075C08G65/2639C08J9/141C08J9/144C08J9/146C08J2203/142C08J2203/14C08J2203/182C08J2375/08C08G2110/0025
Inventor 刘站站王海娟高元锋赵坤坤李鹏
Owner HAIER SMART HOME CO LTD
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