Non-halogen flame retardant hard polyurethane foam material and preparation method thereof

A technology of rigid polyurethane and foam materials, which is applied in the field of thermal insulation materials, can solve the problems that the foaming mold cannot be completely filled, the foamability of polyurethane materials is reduced, and the surface details cannot be made, so as to achieve excellent mechanical properties and improve flame retardancy , Promote the foaming effect of polyurethane foam

Inactive Publication Date: 2017-11-17
合肥广能新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the addition of these ingredients can significantly improve the fireproof properties of the foamed polyurethane material, the foamability of the polyurethane material is greatly reduced at the same time, and it cannot completely fill all the corners of the mold cavity o

Method used

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  • Non-halogen flame retardant hard polyurethane foam material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0022] A halogen-free flame-retardant rigid polyurethane foam material, consisting of component A and component B, the weight ratio of component A to component B is 1:1.3, calculated in parts by weight, component A is composed of phenolic resin 13 parts, 411070 parts of sucrose polyether polyol, 7 parts of expandable graphite, 2 parts of catalyst, 24 parts of composite flame retardant, 2 parts of polyether modified silicone oil and 22 parts of ether. Polymethylene polyphenyl polyisocyanate. The catalyst is a mixture of N,N-dimethylcyclohexylamine, dibutyltin dilaurate and stannous octoate.

[0023] The preparation method of composite flame retardant:

[0024] First mix magnesium hydroxide and water glass, then heat to 100°C, add KH570, and stir, the reaction time is 25 minutes, then cool to 50°C, add nano-montmorillonite, stir evenly, and cool to room temperature.

[0025] Preparation method of halogen-free flame-retardant rigid polyurethane foam:

[0026] Premix phenolic r...

Embodiment 2

[0028] A halogen-free flame-retardant rigid polyurethane foam material, consisting of component A and component B, the weight ratio of component A to component B is 1:1, calculated in parts by weight, component A is composed of phenolic resin 6 83560 parts of sucrose polyether polyol, 10 parts of expandable graphite, 1 part of catalyst, 16 parts of composite flame retardant, 1 part of polyether modified silicone oil and 15 parts of ether, and component B is 32 wt% Polymethylene polyphenyl polyisocyanate, wherein the composite flame retardant is prepared from magnesium hydroxide, water glass, silane coupling agent and nano-montmorillonite. The catalyst is a mixture of N,N-dimethylcyclohexylamine, dibutyltin dilaurate and stannous octoate.

[0029] The preparation method of composite flame retardant:

[0030] First mix magnesium hydroxide and water glass, then heat to 120°C, add KH792, and stir, the reaction time is 20 minutes, then cool to 60°C, add nano-montmorillonite, stir ...

Embodiment 3

[0034] A halogen-free flame-retardant rigid polyurethane foam material, consisting of component A and component B, the weight ratio of component A to component B is 1:1.5, calculated in parts by weight, component A is composed of phenolic resin 20 83580 parts of sucrose polyether polyol, 5 parts of expandable graphite, 4 parts of catalyst, 30 parts of composite flame retardant, 3 parts of polyether modified silicone oil and 30 parts of ether. Polymethylene polyphenyl polyisocyanate, wherein the composite flame retardant is prepared from magnesium hydroxide, water glass, silane coupling agent and nano-montmorillonite. The catalyst is a mixture of N,N-dimethylcyclohexylamine, dibutyltin dilaurate and stannous octoate.

[0035] The preparation method of composite flame retardant:

[0036] First mix magnesium hydroxide and water glass, then heat to 110°C, add DL602, and stir, the reaction time is 20 minutes, then cool to 50°C, add nano-montmorillonite, stir evenly, and cool to ro...

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Abstract

The invention provides a non-halogen flame retardant hard polyurethane foam material and a preparation method thereof. The material is composed of a component A and a component B, and the weight ratio of the component A to the component B is 1:(1-1.5), wherein the component A comprises, by weight, 6-20 parts of phenolic resin, 60-80 parts of polyether polyol, 5-10 parts of expansible graphite, 1-4 parts of catalysts, 16-30 parts of compounded flame retardant, 1-3 parts of polysiloxane foam stabilizers and 15-30 parts of foaming agent, the component B is isocyanate, and the compounded flame retardant is made of magnesium hydrate, water glass, an silane coupling agent and nano montmorillonite. The foam material improves the flame retardant property, lowers the influence of the flame retardant on the mechanical property of the foam material and further improves the foaming property.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials, and in particular relates to a halogen-free flame-retardant rigid polyurethane foam material and a preparation method thereof. Background technique [0002] In recent years, due to the frequent occurrence of high-rise building fires, it has brought serious losses to the country and the people. The reason is mainly caused by flammable external wall insulation materials, so improving the flame retardancy of external wall insulation materials has become a hot research topic. There are currently two main types of organic insulation materials on the market, one is polystyrene foam and the other is polyurethane foam. Among them, polystyrene foam is a thermoplastic polymer material. When heated and burned, polystyrene foam will melt and flow, and it is difficult to flame-retardant it. Polyurethane foam is a thermosetting polymer material, which will only decompose and shrink when ...

Claims

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Application Information

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IPC IPC(8): C08G18/54C08G18/48C08G18/61C08G18/79C08K13/04C08K7/24C08K3/22C08K3/34
CPCC08G18/54C08G18/4883C08G18/61C08G18/79C08K3/22C08K3/34C08K3/346C08K7/24C08K13/04C08K2003/2224C08K2201/011C08L2201/02C08L2201/22C08L2203/14
Inventor 刘涛
Owner 合肥广能新材料科技有限公司
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