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 rese

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

Examples

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Example Embodiment

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

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

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

[0076] Lower the temperature of the reactor and discharge the material.

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

[0078] Among them, the weight ratio of each raw material of the above-mentioned polyurethane rigid foam is as follows:

[0079]

[0080] The preparation method of the polyurethane rigid foam ...

Example Embodiment

[0087] Example 1

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

[0089] The preparation method of the flame-retardant polyol is as follows: adding 380g epoxy resin E51 and 300g polyethylene glycol glycidyl ether into the reaction kettle, then raising the reaction temperature to 70°C, adding 600g diethyl phosphate dropwise, 1 After the hour drop was completed, the temperature was raised to 90°C, reacted 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.

Example Embodiment

[0091] Example 2

[0092] The small phosphoric acid molecule selected in the embodiment of the present invention is dibutyl phosphate, the epoxy-based substance is epoxy resin E51, and polyethylene glycol glycidyl ether with a molecular weight of 200;

[0093] The preparation method of the flame-retardant polyol is as follows: adding 380g epoxy resin E51 and 200g polyethylene glycol glycidyl ether into the reaction kettle, then raising the reaction temperature to 70°C, adding 800g diethyl phosphate dropwise, 1 After the hour drop was completed, the temperature was raised to 90°C, reacted 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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