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Flame-retardant polyurethane spraying rigid foam plastic

A technology of rigid foam and polyurethane, applied in the field of rigid foam, can solve the problems of increasing the flame retardant grade of sprayed rigid foam, and achieve the effect of excellent flame retardant performance

Active Publication Date: 2014-10-29
WANHUA ENERGY-SAVING TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyurethane high-pressure spraying machines basically carry out spraying construction according to the volume ratio of the isocyanate component and the polyol component two-component raw material, which further increases the difficulty of improving the flame retardant grade of polyurethane sprayed rigid foam.

Method used

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  • Flame-retardant polyurethane spraying rigid foam plastic
  • Flame-retardant polyurethane spraying rigid foam plastic
  • Flame-retardant polyurethane spraying rigid foam plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Polyol component:

[0042]

[0043]

[0044] Isocyanate component: polymethylene polyphenyl polyisocyanate PM-200 (Wanhua Chemical Group Co., Ltd.);

[0045] The volume ratio of isocyanate component to polyol component is 1:1;

[0046] Equipment: H25 spraying machine (Graco, USA).

[0047] Production steps:

[0048] (1) Insert the two-component lifting pumps of the spraying machine into the corresponding raw material barrels, turn on the power and air compressor and other preparations;

[0049] (2) Set the heating temperature of spraying machine raw materials and pipelines to 50°C;

[0050] (3) Use a spray gun to spray the raw material on the substrate, and spray more than 5 layers to complete the foam with a thickness of 8cm;

[0051] The color of the prepared foam is uniform gray, and the properties are as follows:

[0052]

[0053]

[0054] The measured flame retardant performance index meets the national standard GB8624-2012 "Classification of Combu...

Embodiment 2

[0056] Polyol component:

[0057]

[0058]

[0059] Isocyanate component: polymethylene polyphenyl polyisocyanate PM-200 (Wanhua Chemical Group Co., Ltd.) 80wt%, aluminum hydroxide particles (800 mesh) 20wt%;

[0060] Equipment: H25 spraying machine (Graco, USA);

[0061] The volume ratio of isocyanate component to polyol component is 1:1;

[0062] Production steps:

[0063] (1) Insert the two-component lifting pumps of the spraying machine into the corresponding raw material barrels, turn on the power and air compressor and other preparations;

[0064] (2) Set the heating temperature of spraying machine raw materials and pipelines to 50°C;

[0065] (3) Use a spray gun to spray the raw material on the substrate, and spray more than 5 layers to complete the foam with a thickness of 8cm;

[0066] The color of the prepared foam is uniform light yellow, and the properties are as follows:

[0067]

[0068]

[0069] The measured flame retardant performance index mee...

Embodiment 3

[0071] Polyol component:

[0072]

[0073]

[0074] Isocyanate component: polymethylene polyphenyl polyisocyanate PM-200 (Wanhua Chemical Group Co., Ltd.) 88wt%, aluminum hydroxide particles (800 mesh) 10wt%; color paste 036-2M1941 (Baomeishi Chemical Industry ( Shanghai) Co., Ltd.) 2wt%;

[0075] The volume ratio of isocyanate component to polyol component is 1:1;

[0076] Equipment: H25 spraying machine (Graco, USA)

[0077] Production steps:

[0078] (1) Insert the two-component lifting pumps of the spraying machine into the corresponding raw material barrels, turn on the power and air compressor and other preparations;

[0079] (2) Set the heating temperature of spraying machine raw materials and pipelines to 50°C;

[0080] (3) Use a spray gun to spray the raw material on the substrate, and spray more than 5 layers to complete the foam with a thickness of 8cm;

[0081] The color of the prepared foam is uniform gray, and the properties are as follows:

[0082] ...

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Abstract

The invention relates to a flame-retardant polyurethane spraying rigid foam plastic, belonging to the field of rigid foam plastics. The rigid foam plastic is polymerized from an isocyanate component and a polyalcohol component in a volume ratio of 1:1, wherein the polyalcohol component comprises the following components in percentage by weight: 10-40% of polyester polyol, 5-40% of reactive flame retardant, 10-20% of inorganic particle and 24-50% of assistant. The rigid foam plastic can be sprayed and formed by a polyurethane high-pressure spraying machine, and has excellent flame retardancy. The polyurethane spraying rigid foam plastic can satisfy the requirements for combustion performance level for flat building materials and products and nonflammable material Grade B in graded criteria in Chinese Standard GB8624-2012 Combustion Performance Grade for Building Material and Product, and is suitable for the application fields with high flame-retardant requirements, such as architectural walling, roofing, ground insulation and the like.

Description

technical field [0001] The invention relates to a rigid foam, in particular to a flame-retardant polyurethane sprayed rigid foam. Background technique [0002] At present, the main materials used in building thermal insulation and energy saving in the world include inorganic and organic materials. Inorganic materials mainly include expanded perlite, glass wool, rock wool, etc.; organic materials mainly include polystyrene foam, phenolic foam and polyurethane rigid foam, among which polystyrene materials are divided into molded polystyrene (EPS) according to the processing method. ) and extruded polystyrene (XPS). [0003] Inorganic materials such as rock wool are non-combustible, but have large thermal conductivity, poor thermal insulation performance, difficult construction, and limited resources. They are only used when there are special requirements for fire protection; EPS and XPS foam boards are cheap and easy to construct, and are still used in large quantities at hom...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/42C08G18/28C08K3/22C08K3/26C08K3/38C08K5/521C08J9/14
CPCC08G18/4208C08G18/4607C08G18/509C08G18/7664C08G2150/50C08J9/144C08J2203/142C08J2375/06C08J2375/08C08K3/22C08K3/26C08K3/38C08K5/521C08K2003/2224C08K2003/2227C08K2003/265C08K2201/003C08G2110/0025
Inventor 王磊潘振勇王炳凯王耀西余郁窦忠山李坤
Owner WANHUA ENERGY-SAVING TECH GRP CO LTD
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