Composite polyether, composition including composite polyether and polyurethane block foam and preparing method and application of composite polyether

A technology for combining polyether and polyether polyol, applied in the field of combining polyether, can solve the problems of uneven density, low dimensional stability and low production efficiency of rigid polyurethane blocks, and achieve high dimensional stability and uniform density. , to avoid the effect of foam heartburn

Inactive Publication Date: 2015-03-25
SHANGHAI DONGDA POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the closed mold production and low production efficiency when preparing rigid polyurethane foam in the prior art, and the prepared rigid polyurethane foam has uneven density, high thermal conductivity, rough foam and stable size. Based on defects such as low resistance and low compressive strength, a combined polyether, a composition containing the same, a polyurethane block and its preparation method and application are provided; the rigid polyurethane block prepared by using the combined polyether has uniform density, low thermal conductivity, Fine foam, high dimensional stability, high compressive strength, and when it is used to prepare rigid polyurethane block foam, it can be molded and released quickly

Method used

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  • Composite polyether, composition including composite polyether and polyurethane block foam and preparing method and application of composite polyether
  • Composite polyether, composition including composite polyether and polyurethane block foam and preparing method and application of composite polyether
  • Composite polyether, composition including composite polyether and polyurethane block foam and preparing method and application of composite polyether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] (1) Preparation of fast release combined polyether for rigid polyurethane block foam

[0061] Polyether polyol SA4606, SA3803, MN5001, surfactant B85450.15, LK6650.15, catalyst PC80.05, PC410.05, TMR-20.1, blowing agent HFC-365mfc / 2272 Parts, 0.2 parts of water and 1 part of flame retardant TCPP, 0.5 parts of TEP.

[0062] According to the above formula, add each component into a stainless steel mixing kettle, stir at a speed of 500 rpm at room temperature for 1 hour, and discharge the materials to obtain a combined polyether for rapid release of rigid polyurethane block foam.

[0063] (2) Preparation of rigid polyurethane block foam:

[0064] The rigid polyurethane block foam is reacted with polyether and isocyanate PM200 according to the mass ratio of 1:1.2 at 20°C with rapid release, and injected into the open mold. After the foam stops growing, the foam is taken out, and the overall density is about 50Kg. / m 3 The rigid polyurethane block foam, the physical prope...

Embodiment 2

[0076] (1) Preparation of fast release combined polyether for rigid polyurethane block foam

[0077] Polyether polyol SA4604 parts, SA3804 parts, MN5002 parts, surfactant B85450.15 parts, LK6650.15 parts, catalyst PC80.05 parts, PC410.05 parts, TMR-20.15 parts, blowing agent HFC-365mfc / 2272 Parts, 0.2 parts of water and 2 parts of flame retardant TCPP, 1 part of TEP.

[0078] According to the above formula, add each component into a stainless steel mixing kettle, stir at a speed of 500 rpm at room temperature for 1 hour, and discharge the materials to obtain a combined polyether for rapid release of rigid polyurethane block foam.

[0079] (2) Preparation of rigid polyurethane block foam:

[0080] The rigid polyurethane block foam is reacted with polyether and isocyanate PM200 according to the mass ratio of 1:1.2 at 20°C with rapid release, and injected into the open mold. After the foam stops growing, the foam is taken out, and the overall density is about 50Kg. / m 3 The ri...

Embodiment 3

[0093] (1) Preparation of fast release combined polyether for rigid polyurethane block foam

[0094] Polyether polyol SA4605 parts, SA3803.5 parts, MN5001.5 parts, surfactant B85450.15 parts, LK6650.15 parts, catalyst PC80.05 parts, PC410.05 parts, TMR-20.15 parts, blowing agent HFC -365mfc / 2272 parts, 0.2 parts of water and 1.5 parts of flame retardant TCPP, 0.8 parts of TEP.

[0095] According to the above formula, add each component into a stainless steel mixing kettle, stir at a speed of 500 rpm at room temperature for 1 hour, and discharge the material to obtain a combined polyether for rapid release of rigid polyurethane block foam.

[0096] (2) Preparation of rigid polyurethane block foam:

[0097]The rigid polyurethane block foam is reacted with polyether and isocyanate PM200 according to the mass ratio of 1:1.2 at 20°C with rapid release, and injected into the open mold. After the foam stops growing, the foam is taken out, and the overall density is about 50Kg. / m ...

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Abstract

The invention discloses composite polyether, composition including the composite polyether and polyurethane block foam and a preparing method and application of the composite polyether. The composite polyether includes, by weight, 4 parts to 6 parts of polyether polyol A, 3 parts to 4 parts of polyether polyol B, 1 part to 2 parts of polyether polyol C, 02 part to 0.4 part of surface active agent, 0.2 part to 0.4 part of catalyst, 1 part to 2 parts of foaming agents and 0.2 part of water, wherein the surface active agent is B8545 and LK665, and the catalyst is N,N-dimethyl cyclohexylamine 1,3,5-3 (dimethylamino propyl)-hexahydro triazine and TMR-2. The density of the rigid polyurethane block foam prepared from the composite polyether is uniform, a heat conductivity coefficient is small, foam is exquisite, dimensional stability is high, compression strength is high, and mould opening production and fast demolding can be performed when the rigid polyurethane block foam is prepared.

Description

technical field [0001] The present invention relates to combination polyether, its composition, polyurethane block foam and its preparation method and application. Background technique [0002] At present, there are a large number of enterprises engaged in the production of rigid polyurethane block foam in China. Rigid polyurethane block foam mostly adopts the production method of closed box-type foaming. The length of the box-type foaming mold is 1000-4000mm, the width is 1000-1200mm, and the thickness is 400-800mm. The mainstream mold size is 2400*1200*600mm. Due to the closed foaming in the production process, the foaming process produces a large expansion force, and the block foam needs to be matured for 10 to 20 hours before it can be taken out of the mold; then cut into polyurethane boards of required thickness according to requirements, and use It is used for the insulation of refrigerated trucks and central air-conditioning pipelines; it can also be cut into tube sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/20C08G18/76C08J9/14C08K5/521C08K5/5333C08G101/00
CPCC08G18/4816C08G18/7664C08J9/146C08J2203/142C08K5/521C08G2110/0025
Inventor 信延垒李明任丽夏连波
Owner SHANGHAI DONGDA POLYURETHANE
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