Liquid expanded graphite flame retardant and preparation method for flame-retardant polyurethane foam material

A technology of polyurethane foam and expanded graphite, which is applied in the field of liquid flame retardants, can solve problems such as application limitations, achieve a wide range of densities, be beneficial to environmental protection, and avoid the effects of viscosity increase

Inactive Publication Date: 2012-09-19
HUAFON GROUP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the application of halogen-containing flame retardants is greatly restricted, and even banned in some countries and regions, while halogen-free flame retardants are getting more and more attention

Method used

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  • Liquid expanded graphite flame retardant and preparation method for flame-retardant polyurethane foam material
  • Liquid expanded graphite flame retardant and preparation method for flame-retardant polyurethane foam material
  • Liquid expanded graphite flame retardant and preparation method for flame-retardant polyurethane foam material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This example includes 3 production examples based on expanded graphite liquid flame retardant and 3 application examples, wherein the application example is a production example based on liquid graphite flame-retardant polyurethane foam material, and also includes 1 comparative production example of flame-retardant polyurethane foam material. Usually, the preparation of the liquid flame retardant and polyurethane foam is carried out at normal temperature, but the present invention also includes the preparation of the above products at a state higher than normal temperature.

manufacture example 1

[0059] Into a three-neck flask with an electric stirrer was added 20 grams of polyether polyol Arcol 3601, 10 grams of polyether polyol Arcol 1011, 0.4 grams of additives (alkylammonium salts of high molecular weight interpolymers) 9076, 20 grams of dimethyl methyl phosphate and 50 grams of exfoliated expandable graphite 100. After mixing the materials uniformly at normal temperature, the expanded graphite-based liquid flame retardant FR1 is obtained.

manufacture example 2

[0061] Into a three-necked flask with an electric stirrer, add 20 grams of polyether polyol VORANOL 360, 10 grams of polyether polyol Arcol 1011, 1.0 grams of additives (alkyl ammonium salt of high molecular weight interpolymer) 9077, 30 grams of dimethyl methyl phosphate and 40 grams of exfoliated expandable graphite 300. After mixing the materials uniformly at normal temperature, the expanded graphite-based liquid flame retardant FR 2 is obtained.

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Abstract

The invention discloses an expanded-graphite-based liquid flame retardant. The expanded-graphite-based liquid flame retardant comprises 100 parts of expansible graphite and 100 to 900 parts of diluent, wherein the diluent is at least one of a phosphate modifier and polyol. The invention also discloses a method for preparing a flame-retardant polyurethane foam material from the expanded-graphite-based liquid flame retardant. The method comprises the following steps of: (a) adding the expanded-graphite-based liquid flame retardant into polyisocyanate, adding a polymerization catalyst and a foaming agent, mixing uniformly, and optionally adding the polyol; and (b) molding to obtain the polyurethane foam material. The expanded-graphite-based flame retardant is a liquid product and is convenient to process and measure, and common phenomena such as viscosity increase, demixing and precipitation when solid expansible graphite is directly mixed into a polyol component are avoided; meanwhile, the flame retardant is favorable for environment friendliness because halogen groups are not contained; and the polyurethane product prepared from the flame retardant has a wide density range and a wide application range.

Description

technical field [0001] The invention relates to a liquid flame retardant, in particular to a liquid expanded graphite flame retardant, and also relates to a preparation method of a polyurethane foam material containing the flame retardant and polyurethane prepared with the flame retardant. Background technique [0002] Polyurethane foam is a foam material formed by addition polymerization and foaming of polyols and isocyanates as raw materials under the action of catalysts and foaming agents. This material has excellent physical mechanical properties, electrical properties, acoustic properties and chemical resistance. Because of its low thermal conductivity, low density, high strength, low water absorption, heat insulation, insulation, sound insulation, good chemical stability, and high recovery rate after impact, it is widely used in petroleum, chemical, transportation, construction and other fields. [0003] Polyurethane foam without flame retardant treatment is a flammab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/08C08L67/02C08L67/00C08K9/04C08K7/24C08K3/04C08K5/523C08K5/521C08K5/524C08J9/228C08J9/14C08G18/65C08G18/08
Inventor 项超力朱彦唐劲松唐志勇乔志辉戴胜
Owner HUAFON GROUP
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