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Combined polyether, raw material composition and polyurethane foam as well as preparation method and application of combined polyether, raw material composition and polyurethane foam

A raw material composition and technology of combining polyether, applied in the field of polyurethane, can solve problems such as high requirements for use conditions, poor operability, and environmental pollution, and achieve the effects of easy acquisition, low GWP value, and low viscosity

Active Publication Date: 2014-03-26
SHANGHAI DONGDA POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects that the existing combined polyether pollutes the environment during use, is not environmentally friendly, has high cost, requires high conditions of use, and has poor operability, and provides an environmentally friendly combined polyether, Polyurethane raw material composition, rigid polyurethane foam, preparation method and use thereof

Method used

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  • Combined polyether, raw material composition and polyurethane foam as well as preparation method and application of combined polyether, raw material composition and polyurethane foam
  • Combined polyether, raw material composition and polyurethane foam as well as preparation method and application of combined polyether, raw material composition and polyurethane foam
  • Combined polyether, raw material composition and polyurethane foam as well as preparation method and application of combined polyether, raw material composition and polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Preparation of pentane-type combined polyether for pipelines

[0043] 5 parts of polyether polyol SU450L, 2 parts of polyether polyol SA380, 3 parts of polyether polyol NL20103, 0.2 part of silicone foam stabilizer B8525, 0.10 part of N,N-dimethylcyclohexylamine, N,N- 0.10 part of dimethylbenzylamine, 0.05 part of 1,2,3,5-tris(dimethylaminopropyl)-hexahydrotriazine, 0.9 part of cyclopentane and 0.18 part of deionized water.

[0044] According to the above formula, add each component into the stainless steel mixing kettle, stir at room temperature for 1 hour at a speed of 500 rpm, and then discharge the material.

[0045] (2) Preparation of rigid polyurethane foam insulation material

[0046]The combined polyether and isocyanate of Example 1 were mixed in a mass ratio of 1:1.5 using a high-pressure foaming machine at a material temperature of 20°C, and injected into the pipe interlayer to obtain a core density of about 50Kg / m 3 The rigid polyurethane foam insulatio...

Embodiment 2

[0056] (1) Pentane type combined polyether for pipeline

[0057] 3 parts of polyether polyol SU450L, 3804 parts of polyether polyol SA, 3 parts of polyether polyol NL20103, 0.2 part of silicone foam stabilizer B8525, 0.10 part of N,N-dimethylcyclohexylamine, N,N-di 0.10 part of methylbenzylamine, 0.05 part of 1,2,3,5-tris(dimethylaminopropyl)-hexahydrotriazine, 0.7 part of cyclopentane and 0.20 part of deionized water.

[0058] According to the above formula, add each component into the stainless steel mixing kettle, stir at room temperature for 1 hour at a speed of 500 rpm, and then discharge the material.

[0059] (2) Preparation of rigid polyurethane foam insulation material

[0060] The combined polyether and isocyanate of Example 2 were mixed in a mass ratio of 1:1.5 using a high-pressure foaming machine at a material temperature of 20°C, and injected into the pipe interlayer to obtain a core density of about 50Kg / m 3 Rigid polyurethane foam insulation material for pipe...

Embodiment 3

[0070] (1) Pentane type combined polyether for pipeline

[0071] 3 parts of polyether polyol SU450L, 2 parts of polyether polyol SA380, 5 parts of polyether polyol NL20105, 0.2 part of silicone foam stabilizer B8525, 0.06 part of N,N-dimethylcyclohexylamine, N,N- 0.10 part of dimethylbenzylamine, 0.05 part of 1,2,3,5-tris(dimethylaminopropyl)-hexahydrotriazine, 0.8 part of cyclopentane and 0.19 part of deionized water.

[0072] According to the above formula, add each component into the stainless steel mixing kettle, stir at room temperature for 1 hour at a speed of 500 rpm, and then discharge the material.

[0073] (2) Preparation of rigid polyurethane foam insulation material

[0074] The combined polyether and isocyanate of Example 3 were mixed in a mass ratio of 1:1.5 using a high-pressure foaming machine at a material temperature of 20°C, and injected into the pipe interlayer to obtain a core density of about 50Kg / m 3 The rigid polyurethane foam insulation material for ...

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Abstract

The invention discloses combined polyether, a raw material composition and rigid polyurethane foam as well as a preparation method and application of the combined polyether, the raw material composition and the polyurethane foam. The combined polyether comprises the following components in parts by weight: 3-5 parts of polyether polyol SU-450L, 2-4 parts of polyether polyol SA380, 3-5 parts of polyether polyol NL2010, 0.2-0.3 part of foam stabilizer, 0.1-0.3 part of catalyst, 0.7-0.9 part of alkane foaming agent and 0.18-0.22 part of water. The alkane foaming agent adopted by the combined polyether has the advantages of zero ODP (Ozone Depletion Potential) value and low GWP (Global Warming Potential) value. The rigid polyurethane foam disclosed by the invention is excellent in various aspects including size stability, compressive strength and heat conductivity coefficient and is suitable for being used as a heat preservation material for applications in industries such as steam, oil pipelines and the like.

Description

technical field [0001] The invention relates to the field of polyurethane, in particular to a combined polyether, a polyurethane raw material composition, a rigid polyurethane foam prepared from the raw material composition, and a preparation method and application thereof. Background technique [0002] In order to effectively utilize resources and reduce environmental pollution, cities are gradually adopting central heating methods and using pipes to transport heat. Therefore, the thermal insulation effect of heating pipes is directly related to the rational use of energy. Polyurethane foam has become the preferred material for urban heating pipeline insulation due to its excellent thermal insulation properties, extremely low moisture absorption and moisture resistance, and high temperature resistance. [0003] At present, HCFC-141B (monofluorodichloroethane) is mostly used as a physical blowing agent for pipeline combination polyethers. However, as a transitional substitu...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08J9/14C08G101/00
CPCC08G18/18C08G18/1816C08G18/2036C08G18/4804C08J9/141C08J2203/14C08J2375/08C08G2110/0025
Inventor 信延垒于楠许风华倪军
Owner SHANGHAI DONGDA POLYURETHANE
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