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High flame-retardant, halogen-free, low-smoke, low-toxicity single-component polyurethane foam sealant with oxygen index ≥ 32 and preparation method thereof

A polyurethane foam, high flame-retardant technology, applied in the field of one-component polyurethane foam caulking agent, can solve the problems of poor flame-retardant effect, high toxicity of combustion products, etc., to overcome technical prejudice, high flame retardancy, low smoke toxicity Effect

Active Publication Date: 2019-11-08
成都高端聚合物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing flame-retardant single-component polyurethane foam sealants not only have poor flame-retardant effect, some use halogen-containing flame retardants, and the combustion products are highly toxic, and some use non-environmentally friendly halogen-containing blowing agents (such as F12) or Expensive halogen-containing blowing agents (such as 134a) that are about to be phased out. Therefore, in today’s increasingly stringent environmental protection requirements, conventional, easy-to-obtain, cheap, environmentally friendly halogen-free blowing agents are used, and a variety of halogen-free flame retardants are used. Flame retardant technology, that is, by adding halogen-free reactive flame retardant polyols, halogen-free liquid additive flame retardants, and halogen-free solid additive flame retardants, a high flame retardant halogen-free low oxygen index ≥ 32 is prepared. Smoke and low toxicity one-component polyurethane foam sealants are more urgently needed

Method used

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  • High flame-retardant, halogen-free, low-smoke, low-toxicity single-component polyurethane foam sealant with oxygen index ≥ 32 and preparation method thereof
  • High flame-retardant, halogen-free, low-smoke, low-toxicity single-component polyurethane foam sealant with oxygen index ≥ 32 and preparation method thereof
  • High flame-retardant, halogen-free, low-smoke, low-toxicity single-component polyurethane foam sealant with oxygen index ≥ 32 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Mix 10 parts of reactive halogen-free flame retardant polyether polyol AD-9958, 54 parts of halogen-free reactive flame retardant polyether polyol AD-9968, 8 parts of halogen-free liquid additive flame retardant TEP, 24 parts of halogen-free liquid The additive flame retardant DMMP, 3 parts of foam stabilizer B-8871, and 1 part of catalyst DMDEE are mixed. The mixing method can be carried out by any common physical means, such as stirring. Mix evenly to obtain combined polyether.

[0075] Using the aerosol filling equipment, add 30 parts of the combined polyether prepared above, 15 parts of expandable graphite KP9980-200 and 38 parts of polyisocyanate M20S into the aerosol tank, and seal the valve. Pour in 7.5 parts of dimethyl ether and 9.5 parts of propylene butane (a total of 17 parts of the mixture of dimethyl ether and propylene butane) foaming agent, shake and mix for 5 minutes, and stand at room temperature for 24 hours to obtain the product of the present inven...

Embodiment 2

[0078] In addition to taking 20 parts of reactive halogen-free flame-retardant polyether polyol DMD-509, 40 parts of halogen-free reactive flame-retardant polyether AD-9968, 36 parts of halogen-free liquid additive flame retardant DMMP, and 3 parts of foam stabilizer B -8871, 1 part of catalyst DMDEE, except for the composition and proportion of the combined polyether, the others are the same as in Example 1. The foam sample of the high flame-retardant, halogen-free, low-smoke and low-toxicity one-component polyurethane foam sealant product of the present invention is tested according to the standard GB / T2406.2-2009 for the oxygen index of the product, and according to GB / T8323.2- The smoke density of the product was tested according to the 2008 standard, and the smoke toxicity of the product was tested according to the method 4.4 in the TB / 3237-2010 standard. The test results are shown in Table 1.

Embodiment 3

[0080] In addition to taking 10 parts of reactive halogen-free flame-retardant polyol AD-9958, 46 parts of halogen-free reactive flame-retardant polyether AD-9968, 8 parts of polyester polyol PS-2352, and 32 parts of liquid-added halogen-free polyol Combustion agent DMMP, 3 parts of foam stabilizer B-8871, 1 part of catalyst DMDEE, except for the composition and proportioning of the combined polyether, the others are the same as in Example 1. The foam sample of the high flame-retardant, halogen-free, low-smoke and low-toxicity one-component polyurethane foam sealant product of the present invention is tested according to the standard GB / T2406.2-2009 for the oxygen index of the product, and according to GB / T8323.2- The smoke density of the product was tested according to the 2008 standard, and the smoke toxicity of the product was tested according to the method 4.4 in the TB / 3237-2010 standard. The test results are shown in Table 1.

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Abstract

The invention relates to the field of single-component polyurethane foam sealants and in particular relates to a high-flame-retarding, halogen-free, low-smoke and low-toxin single-component polyurethane foam sealant with an oxygen index greater than or equal to 32 and a preparation method thereof. The high-flame-retarding, halogen-free, low-smoke and low-toxin single-component polyurethane foam sealant with oxygen index greater than or equal to 32, provided by the invention, is prepared from a halogen-free polyurethane foam sealant basic material, a reaction type flame retardant which has a lasting flame-retarding property, contains phosphorus, nitrogen, silicon and a heteroaromatic ring and has no halogen, a halogen-free solid addition type flame retardant with an expansion property, a halogen-free liquid addition type flame retardant with low viscosity, plasticity and compatibility, and an environment-friendly, cheap and easy-to-obtain halogen-free foaming agent. By adopting the raw materials, the whole single-component polyurethane foam sealant has no halogen component and has the oxygen index greater than or equal to 32, high flame-retarding property, low smoke density and low smoke toxicity; the high-flame-retarding, halogen-free, low-smoke and low-toxin single-component polyurethane foam sealant is especially applicable to fields including special buildings with strict high-flame-retarding and high-environment-friendly requirements, important transportation means and the like.

Description

technical field [0001] The invention relates to the field of one-component polyurethane foam caulking agent, in particular to a highly flame-retardant, halogen-free, low-smoke, low-toxicity one-component polyurethane foam caulking agent with an oxygen index ≥ 32 and a preparation method thereof. Background technique [0002] One-component polyurethane foam sealant is a special polyurethane foam product filled in an aerosol pressure tank, and has been widely used in joint filling, sealing, heat insulation, bonding, sound insulation, etc. It is a new material with excellent performance, convenient use, environmental protection and energy saving. [0003] Ordinary one-component polyurethane foam sealants without flame-retardant treatment are flammable materials, which are not suitable for use in some buildings and vehicles. Flame-retardant one-component polyurethane foam sealants are required to replace flammable ordinary Type caulk, thereby reducing fire hazards. Flame-retar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/50C08G18/48C08G18/42C08G18/79C08K13/02C08K7/24C08K5/521C08K3/32C08J9/14
CPCC08G18/4018C08G18/42C08G18/48C08G18/482C08G18/50C08G18/5006C08G18/5021C08G18/794C08J9/141C08J9/142C08J2203/14C08J2203/182C08J2375/08C08K3/32C08K5/521C08K7/24C08K13/02C08K2003/323C08K2201/014
Inventor 毛建军
Owner 成都高端聚合物科技有限公司
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