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Preparation method of halogen-free flame retardant rigid polyurethane foam insulation material for exterior wall insulation

A polyurethane rigid foam and exterior wall insulation technology, which is applied in the field of preparation of halogen-free flame-retardant polyurethane rigid foam insulation materials, can solve the problems of failing to meet B1 fire protection requirements, poor dispersion and compatibility, easy migration, etc., and achieve Flame retardant effect Smoke and toxicity, suppression of smoke and toxicity, effect of high decomposition temperature

Inactive Publication Date: 2015-11-25
大连亚泰科技新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technical problems of inorganic flame retardant polyurethane rigid foam insulation materials are: (1) due to poor dispersion and compatibility of inorganic flame retardants in polyurethane composite white materials, and easy migration in polyurethane, the flame retardant and The mechanical properties will be affected; (2) The high filling amount of inorganic flame retardants can achieve a certain flame retardant effect, and the effect is not ideal, the oxygen index does not exceed 26, and cannot meet the B1 fire protection requirements

Method used

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  • Preparation method of halogen-free flame retardant rigid polyurethane foam insulation material for exterior wall insulation

Examples

Experimental program
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Effect test

Embodiment 1

[0021] First, mix the flame retardant magnesium hydroxide and special coupling agent in a high-speed mixer at a temperature of 100°C in a ratio of 100:1 to obtain an activated flame retardant, and then mix it with the synergistic flame retardant antimony trioxide A modified flame retardant was obtained.

[0022] The modified flame retardant, phosphorus-containing flame-retardant polyether polyol, catalyst, foaming agent and stabilizer are used in a certain proportion to obtain a combined white material. Mix with black material diphenylmethane diisocyanate crude MDI at a ratio of 1:1.2 to make a board to obtain an environmentally friendly flame-retardant polyurethane rigid foam.

Embodiment 2

[0024] First, mix the flame retardant magnesium hydroxide and special coupling agent in a high-speed mixer at a temperature of 100°C in a ratio of 100:1.5 to obtain an activated flame retardant, and then mix it with a synergistic flame retardant zinc borate to obtain an improved flame retardant.

[0025] The modified flame retardant, phosphorus-containing flame-retardant polyether polyol, catalyst, foaming agent and stabilizer are used in a certain proportion to obtain a combined white material. And the black material toluene diisocyanate TDI is mixed according to 1:1.6 to make the board to obtain the environment-friendly flame-retardant polyurethane rigid foam.

Embodiment 3

[0027] First, mix the flame retardant magnesium hydroxide and special coupling agent in a high-speed mixer at a temperature of 120°C in a ratio of 100:1.5 to obtain an activated flame retardant, and then mix it with a synergistic flame retardant barium metaborate to obtain Modified flame retardant.

[0028] The modified flame retardant, phosphorus-containing flame-retardant polyether polyol, catalyst, foaming agent and stabilizer are used in a certain proportion to obtain a combined white material. And the black material polymethylene polyphenyl polyisocyanate PAPI is mixed at a ratio of 1:1.6 to make a board to obtain an environmentally friendly flame-retardant polyurethane rigid foam.

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Abstract

The present invention relates to a preparation method of halogen-free flame retardant rigid polyurethane foam insulation material for exterior wall insulation, and belongs to the field of energy-saving environment-friendly building insulation materials. The material is prepared by mixing a black material and a combined white material. The black material is isocyanate; the combined white material comprises 20-40 parts of polyol, 10-40 parts of a modified flame retardant, 1-10 parts of a synergistic flame retardant, 0.5-5 parts of a catalyst, 1-5 parts of a foaming agent and 0.5-3 parts of a stabilizer. The modified flame retardant employed by the present invention is magnesium hydroxide treated by a special coupling agent, has excellent flame retardation effect and fire rating of up to B1 grade; and the combined white material prepared from the flame retardant is not easy to produce stratification or precipitation, and can be placed for 30 days. The insulation material provided by the invention meets the needs of industrial production, plays a role in energy conservation and environmental protection, and is superior to the existing organic flame retardant insulation materials on the market.

Description

technical field [0001] The invention relates to a preparation method of a halogen-free flame-retardant polyurethane rigid foam thermal insulation material used for external wall thermal insulation, and belongs to the field of thermal insulation materials for energy-saving and environment-friendly buildings. Background technique [0002] The full name of polyurethane is polyurethane, which is a general term for macromolecular compounds containing repeated carbamate groups in the main chain. It is formed by addition polymerization of organic diisocyanate or polyisocyanate and dihydroxy or polyhydroxy compounds. Polyurethane material has a wide range of uses and can replace rubber, plastic, nylon and other materials. It is an excellent thermal insulation product with the lowest thermal conductivity among thermal insulation materials. ability. [0003] Polyurethane without flame retardant treatment is combustible. It burns and decomposes in case of fire, producing a large amoun...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G18/42C08K9/10C08K3/22C08K3/38C08K5/3492
Inventor 孙忠祥
Owner 大连亚泰科技新材料股份有限公司
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