Method for preparing low-density polyurethane continuous board in all-water

A polyurethane board and polyurethane technology, applied in the field of polyurethane boards, can solve the problems of high viscosity of composite materials, poor dimensional stability, and slow product molding, and achieve good dimensional stability, fast prototyping performance, and uniform foaming

Inactive Publication Date: 2018-12-18
NANJING HONGBAOLI POLYURETHANE
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Problems solved by technology

[0004] The invention provides a method for preparing polyether combined with low-density continuous boards in all water, which solves the problems of high cost, slow product molding, and excessi

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  • Method for preparing low-density polyurethane continuous board in all-water

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[0016] Implementation examples 1~4

[0017] Polyether polyol A is MH185, Hongbaoli Group Co., Ltd.; polyether polyol B is MH506, Hongbaoli Group Co., Ltd.; polyether polyol C is MH082, Hongbaoli Group Co., Ltd.; flame retardant The foam stabilizer is TCPP; the foam stabilizer A is silicone surfactant B8532, Evonik Specialty Chemical Co., Ltd.; the foam stabilizer B is the silicone surfactant AK8840, Jiangsu Meiside Chemical Co., Ltd.; the cell opener is 0- 501, Jiangsu Meister Chemical Co., Ltd.; Catalyst A is PC-211, Air Products Company; Catalyst B is K15, Air Products Company; Catalyst C is DMP-30, Air Products Company; Isocyanate is M20s, BASF (BASF) company.

[0018] Table 1 shows the formula of all-water combined polyether. First, polyether polyol, flame retardant, foam stabilizer, cell opener, catalyst, and water are added to the reactor according to the formula ratio, and the mixture is heated and stirred evenly to obtain a uniform combination. Polyether

[0019] The obtai...

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Abstract

The invention discloses a method for preparing a low-density polyurethane continuous board in all-water. The board is prepared by reacting combined polyether and isocyanate, and the combined polyethercomprises the following components: the polyether polyol comprises 30 to 40 parts of polyether polyol A, 25 to 35 parts of polyether polyol B, 10 to 20 parts of polyether polyol C, and 10 to 20 partsof a flame retardant; a foam stabilizer A is used in an amount of 0.5 to 1.0 part; a foam stabilizer B is used in an amount of 0.5 to 1.5 parts; and a cell opener is used in an amount of 0.2 to 0.6 parts; a catalyst comprises 0.5 to 0.8 parts of a catalyst A, 1.5 to 2.0 parts of a catalyst B, and 3.0 to 3.5 parts of a catalyst C; and the amount of water is 4 to 5 parts. The method overcomes the environmental pollution caused by a traditional freon-type foaming agent, and solves the problem that the viscosity of a whole water system is too large to be applied to the continuous board. The invention provides full-water combined polyether, the water is a foaming agent, and the prepared combined polyether has good thermal conductivity, excellent size stability, fast forming performance, and obvious environmental advantages and social benefit.

Description

technical field [0001] The invention relates to a method for preparing an all-water low-density polyurethane board, which belongs to the field of polyurethane boards. Background technique [0002] With the enhancement of people's awareness of environmental protection, substances that deplete the ozone layer have been phased out. In the field of polyurethane rigid foam, environmentally friendly blowing agents are the product of the progress and development of the current era. Different from traditional physical blowing agents, water is a chemical blowing agent that reacts with isocyanate to release CO during the foaming process. 2 , the emitted CO 2 Residues in the cells play a role in foaming, so the CO released can be controlled by changing the amount of water in the process of preparing polyurethane foam. 2 amount to obtain polyurethane foams of different densities. Due to CO 2 Non-combustible, non-toxic, Ozone Depletion Potential (ODP) value is zero, the comprehensive...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/48C08K5/521C08J9/08C08G101/00
CPCC08G18/4804C08G18/7664C08K5/521C08G2110/0083
Inventor 蒋明访袁海顺许亮邢益辉
Owner NANJING HONGBAOLI POLYURETHANE
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