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Flame retardant polyurethane hard foam plastic for exterior wall external insulation and preparation method thereof

A technology for rigid foam plastic and external wall thermal insulation, which is applied in the field of building thermal insulation materials and can solve the problems of easy migration of liquid flame retardants and poor technological adaptability of solid flame retardants.

Active Publication Date: 2014-05-14
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid flame retardants are easy to migrate, and solid flame retardants have poor process adaptability

Method used

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  • Flame retardant polyurethane hard foam plastic for exterior wall external insulation and preparation method thereof
  • Flame retardant polyurethane hard foam plastic for exterior wall external insulation and preparation method thereof
  • Flame retardant polyurethane hard foam plastic for exterior wall external insulation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Formula composition: polyol NT403A 19.5 parts, hexanediol aluminum salt 3 parts, methyl silicone oil 0.8 parts, TCEP 7 parts, water 2.0 parts, K-151.1 parts, 141b6.6 parts, polyisocyanate PAPI60 parts.

[0022] Mix all other components except PAPI at room temperature for 3 minutes until uniform; then add PAPI, stir at a speed of 5000 rpm for 10 seconds, then pour and freely foam. After completion, the flame-retardant Polyurethane rigid foam.

[0023] According to the GB8624-2012 standard test, the combustion performance of the prepared foamed plastics is shown in Table 1.

[0024] Table 1 NT403A formula foam combustion performance

[0025]

Embodiment 2

[0027] Formula composition: the mass content of polyol QZ450L is 19.5 parts, 3 parts of hexanediol aluminum salt, 1.1 parts of methyl silicone oil, 7 parts of TCPP, 2.0 parts of water, 1.0 parts of PC-8, 6.4 parts of 141b, 60 parts of polyisocyanate PAPI.

[0028] Mix all other components except PAPI at room temperature for 3 minutes until uniform; then add PAPI, stir at a speed of 5000 rpm for 10 seconds, then pour and freely foam. After completion, the flame-retardant Polyurethane rigid foam.

[0029] According to the GB8624-2012 standard test, the properties of the prepared foam plastics are shown in Table 2.

[0030] Table 2QZ450L formula foam properties

[0031]

[0032]

Embodiment 3

[0034] Formula composition: the mass content of polyol QZ450L is 18 parts, 4 parts of hexanediol aluminum salt, 1.1 parts of methyl silicone oil, 7 parts of TCPP, 2.5 parts of water, 1.0 parts of PC-8, 6.4 parts of 141b, and 60 parts of polyisocyanate PAPI.

[0035] Mix all other components except PAPI at room temperature for 3 minutes until uniform; then add PAPI, stir at a speed of 5000 rpm for 10 seconds, then pour and freely foam. After completion, the flame-retardant Polyurethane rigid foam.

[0036] Tested according to the GB8624-2012 standard, the properties of the prepared foam plastics are shown in Table 3.

[0037] Table 3 QZ450L formula foam properties

[0038]

[0039]

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PUM

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Abstract

The invention relates to flame retardant polyurethane hard foam plastic for exterior wall external insulation and a preparation method thereof, belonging to the technical field of thermal insulation materials for buildings. The preparation method of the flame retardant polyurethane hard foam plastic for exterior wall external insulation provided by the invention comprises the following steps: first, uniformly mixing all components except PAPI (Polymethylene Polyphenylisocyanate), wherein in the mixing process, metal alkoxide and water are reacted to generate a nano aluminum hydroxide gel in situ, other products are alcohols corresponding to the metal alkoxide, and no other byproducts are brought to a polyether system; then, adding PAPI, stirring, and after stirring, pouring and foaming to obtain the flame retardant polyurethane hard foam plastic provided by the invention.

Description

technical field [0001] The invention relates to a flame-retardant polyurethane rigid foam used for external thermal insulation of external walls and a preparation method thereof, belonging to the technical field of thermal insulation materials for buildings. Background technique [0002] External wall thermal insulation technology is one of the important measures for building thermal insulation and heat insulation. The main materials used for external thermal insulation of external walls are porous foam materials, among which polyurethane rigid foam plastics have the best thermal insulation performance. Polyurethane without flame retardant treatment is combustible. It will burn and decompose in case of fire, producing a large amount of toxic smoke, which makes it difficult to extinguish the fire. Polyurethane rigid foam used in external wall insulation needs to meet the relevant flame retardant requirements. The flame retardancy of rigid polyurethane foam can be achieved by...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/48C08G18/42C08K3/22C08J9/14C08G101/00
CPCC08G18/7664C08J9/141C08J2203/14C08J2375/04C08K3/22C08K5/521C08K5/5333C08K2003/2227C08K2201/011C08G2110/0025
Inventor 邹美帅何吉宇杨荣杰王万金贺奎周思伟田锦顾文董全霄夏义兵
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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