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Alkane foam b1-level flame-retardant polyurethane rigid foam and preparation method thereof

A technology of rigid foam and alkane, which is applied in the field of alkane foaming B1 flame-retardant polyurethane rigid foam and its preparation, can solve the problems of high brittleness of polyurethane foam, difficulty in large-scale use, poor thermal insulation performance, etc., and achieve Low cost, convenient technological operation, and the effect of reducing production costs

Active Publication Date: 2022-07-12
WANHUA CHEMYANTAI RONGWEI POLYURETHANE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this invention uses environmentally friendly water as the foaming agent, the polyurethane foam produced by water foaming has the disadvantages of high brittleness, poor thermal insulation performance, poor adhesion, etc., and it is difficult to use on a large scale

Method used

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  • Alkane foam b1-level flame-retardant polyurethane rigid foam and preparation method thereof
  • Alkane foam b1-level flame-retardant polyurethane rigid foam and preparation method thereof
  • Alkane foam b1-level flame-retardant polyurethane rigid foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The formula system is as follows:

[0040] Combination polyether polyol components: 100 Flame Retardant Polyether Polyol 1 10 Polyester Polyol 1 57.6 TCPP 25 Foam Stabilizer A1 1.5 Foam Stabilizer B1 0.5 PC5 0.5 PC8 0.8 Potassium acetate 2.5 water 0.6 acetic acid 1 Blowing agent components: n-pentane 6 Polyisocyanate component: PM-400 210

[0041] Flame retardant polyether polyol 1, tetrabromobisphenol A as initiator, hydroxyl value of 112mgKOH / g, Wanhua Chemical (Ningbo) Rongwei Polyurethane Co., Ltd., product brand FR212.

[0042] Polyester polyol 1, phthalic anhydride OPA, terephthalic acid, adipic acid and diethylene glycol DEG, glycerol polymerization, hydroxyl value 190mgKOH / g, Beijing Demei Science and Technology Co., Ltd., product brand DM2013 .

[0043] Foam Stabilizer A1, Evonik Specialty Chemicals (Shanghai) Co., Ltd., B84813.

[0044] Foam Stabilizer A2, Evo...

Embodiment 2

[0047] The formula system is as follows:

[0048] Combination polyether polyol components: 100 Flame Retardant Polyether Polyol 2 12 Polyester Polyol 2 50 TCPP 25 TEP 5 Foam Stabilizer A2 3 PC5 0.3 PC8 0.5 Potassium formate 2.5 water 0.5 Formic acid 1.2 Blowing agent components: n-pentane 5 Polyisocyanate component: PM-700 230

[0049] Flame retardant polyether polyol 2, prepared by the ring-opening reaction of a mixed initiator of glycerol and melamine with ethylene oxide, the mass ratio of glycerol and melamine is 5:1, and the hydroxyl value range is 480mgKOH / g. Wanhua Chemical ( Ningbo) Rongwei Polyurethane Co., Ltd.

[0050] Polyester polyol 2, phthalic anhydride OPA, terephthalic acid and diethylene glycol DEG, glycerol polymerized, the hydroxyl value is 315mgKOH / g, Stepan Polyester Co., Ltd., product brand PS3158.

[0051] Foam Stabilizer A2, Evonik Specialty Chemicals (S...

Embodiment 3

[0054] The formula system is as follows:

[0055]

[0056]

[0057] Flame retardant polyether polyol 1, tetrabromobisphenol A as initiator, hydroxyl value of 112mgKOH / g, Wanhua Chemical (Ningbo) Rongwei Polyurethane Co., Ltd., product brand FR212.

[0058] Flame retardant polyether polyol 3, prepared by a ring-opening reaction of a mixed initiator of glycerol and melamine with ethylene oxide, the mass ratio of glycerol and melamine is 3:1, and the hydroxyl value range is 350mgKOH / g. Wanhua Chemical ( Ningbo) Rongwei Polyurethane Co., Ltd.

[0059] Polyester polyol 3, phthalic anhydride OPA, terephthalic acid, adipic acid and diethylene glycol DEG, polymerized, the hydroxyl value is 200mgKOH / g, Stepan Polyester Co., Ltd., product brand DPR5145- 36.

[0060] Foam Stabilizer A1, Evonik Specialty Chemicals (Shanghai) Co., Ltd., B84813.

[0061] Foam Stabilizer A2, Evonik Specialty Chemicals (Shanghai) Co., Ltd., B8443.

[0062] Alcohol ester acid is 2-[2-(2-hydroxyethoxy...

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Abstract

The invention discloses an alkane-based foaming B1-level flame-retardant polyurethane rigid foam and a preparation method thereof. The alkane is used as a foaming agent, and a polyether / polyester polyol with specific flame retardant effect, a catalyst and a foam stabilizer are mixed together. , flame retardants and other special auxiliaries are prepared into combined polyethers, and react with polyisocyanates to form high-index PIR foams. The B1 flame-retardant polyurethane rigid foam in the present invention is mainly suitable for continuous line production process, and has the advantages of high flame retardancy, environmental protection, low density, high production latitude, and excellent foam performance compared with other PIR sheet foams.

Description

technical field [0001] The invention belongs to the field of polymer materials and is used for manufacturing foam insulation materials for buildings, in particular to an alkane foamed B1-level flame-retardant polyurethane rigid foam and a preparation method thereof. Background technique [0002] In today's increasingly widespread concern about building energy conservation, especially after low-carbon energy conservation has become my country's basic national policy, polyurethane foam will definitely be widely promoted and applied in the building insulation industry. However, polyurethane rigid foam also faces concerns about its fire safety. [0003] In order to learn from the painful lessons of fire accidents involving external insulation of buildings such as CCTV's new site 2.9 and Shanghai 11.15, the new version of the national standard "Code for Fire Protection in Architectural Design" was revised in 2018. At the same time, the requirement of core material B1 is added to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/50C08G18/42C08K5/521C08K5/12C08J9/14C08J9/00C08L75/04
CPCC08G18/4018C08G18/5012C08G18/5063C08G18/482C08G18/425C08K5/521C08K5/12C08J9/141C08J9/0038C08J9/0023C08J2375/04C08J2205/10C08J2203/14C08K2201/014
Inventor 李雪艳程东东邵康海朱霞林席强冷柏逊
Owner WANHUA CHEMYANTAI RONGWEI POLYURETHANE CO LTD
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