Stably foamed polyisocyanurate foam material and its preparation method

A technology of polyisocyanurate and foam materials, which is applied in the field of producing polyisocyanurate foam materials and producing composite materials for polyisocyanurate foam materials, can solve the problem that it is difficult to achieve C-level flame retardant polyisocyanurate. Cyanurate foam material production, poor dimensional stability, high foam density and other problems, to achieve the effect of improving foam fluidity, high dimensional stability, and small foam shrinkage

Active Publication Date: 2012-11-21
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In the prior art, it is difficult to realize the production of Class C flame-retardant polyisocyanurate foam materials, especially the continuous production line of Class C flame-retardant polyisocyanurate foam materials
Even if realized, the material produced has poor dimensional stability and high cost due to the use of large amounts of plasticizing flame retardants and high foam density

Method used

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  • Stably foamed polyisocyanurate foam material and its preparation method
  • Stably foamed polyisocyanurate foam material and its preparation method
  • Stably foamed polyisocyanurate foam material and its preparation method

Examples

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Embodiment Construction

[0058] The following examples will further illustrate the method provided by the present invention, but the present invention is not limited to the listed examples, and should also include any other known changes within the claimed scope of the present invention.

[0059] The raw material involved in the embodiment has:

[0060] 1. Combination material:

[0061] Polyol 1 with a hydroxyl value of 315mgKOH / g and an average functionality of 2 formed by polycondensation of phthalic anhydride and diethylene glycol, which is commercially available, such as PS-3152 (Nanjing Jinling Stepan Chemical Co., Ltd.);

[0062] Polyester polyol A:

[0063] Polyol 2 with a hydroxyl value of 200 mgKOH / g and an average functionality of 3 formed by polycondensation of trimellitic anhydride, terephthalic acid and diethylene glycol, its preparation method can refer to the examples in patent CN201080005638.4;

[0064] Polyol 3 with a hydroxyl value of 320 mgKOH / g and an average functionality of 3....

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Abstract

The invention relates to a combined material for stably foaming a polyisocyanurate foam material, a method for using the combined material to produce the polyisocyanurate foam material, and the polyisocyanurate foam material produced through the method. The combined material for the polyisocyanurate disclosed in the invention is especially suitable for continuous production line technologies. Compared with routine combined materials for the polyisocyanurate, the combined material used in the invention has the advantages of stable material foaming, smooth surface, small foam contraction, high dimensional stability, low defective rate and the like in the polyisocyanurate production process.

Description

technical field [0001] The invention relates to a combination material for producing polyisocyanurate foam material with stable foaming, and a method for producing polyisocyanurate foam material by using the combination material. The invention also relates to polyisocyanurate foams produced from this combination. Background technique [0002] As the country and society have higher and higher requirements for energy saving and low carbon, the application of polyurethane foam materials in the field of building insulation is also becoming more and more extensive. However, in recent years, national policies and the people's requirements for fire safety of building insulation materials have rapidly increased, making the flame retardant problem of polyurethane insulation materials an urgent problem that must be solved in the current polyurethane building insulation industry. In order to improve the flame retardancy of polyurethane foam materials, a widely adopted method is to inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/32C08G18/18C08G18/20C08G18/22C08J9/12C08J9/14C08G101/00
Inventor 齐旺顺周明星刘贤波王学勇华卫琦丁建生
Owner WANHUA CHEM GRP CO LTD
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