Polyurethane foam, and raw material composition, combined polyether and application thereof

A technology of polyurethane foam and polyether combination, applied in the field of polyurethane, can solve problems such as poor thermal insulation performance, high energy consumption, environmental pollution, etc., and achieve the effects of high application value, low thermal conductivity, dimensional stability and high compressive strength

Active Publication Date: 2014-03-12
SHANGHAI DONGDA POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to overcome the disadvantages of poor thermal insulation performance, high energy consumption an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Preparation of combined polyether:

[0040] 70 parts of polyether polyol mixture, 30 parts of polyester polyol PS-3152, 2 parts of foam stabilizer B8545, 1.0 parts of deionized water, 3 parts of catalyst and 25 parts of blowing agent HFC-365mfc; among them, polyether polyol The mixture is made of polyether polyol NL2011, polyether polyol YD-401P and polyether polyol SA-380 in a mass ratio of 5:1:4; the catalyst is catalyst PC5, catalyst PC77 and benzylamine by mass Mixed in a ratio of 1:3:5.

[0041] Put various raw materials into the reaction kettle according to the above formula, and stir for 25 minutes at room temperature at a speed of 300 rpm to prepare the combined polyether.

[0042] (2) Preparation of polyurethane foam: Mix the combined polyether in Example 1 and isocyanate PM-200 according to the mass ratio of 100:105, and stir on a stirrer with a rotation speed of 3000rpm for 8 seconds until the mixture is uniform. After the reaction Instantly.

[0043] ...

Embodiment 2

[0045] (1) Preparation of combined polyether:

[0046] 80 parts of polyether polyol mixture, 20 parts of polyester polyol PS-3152, 2.5 parts of foam stabilizer B8545, 1.2 parts of deionized water, 2.5 parts of catalyst and 22 parts of blowing agent HFC-365mfc; among them, polyether polyol The mixture is made of polyether polyol NL2011, polyether polyol YD-401P and polyether polyol SA-380 in a mass ratio of 5:1:4; the catalyst is catalyst PC5, catalyst PC77 and benzylamine by mass Mixed in a ratio of 1:3:5.

[0047]Put various raw materials into the reaction kettle according to the above formula, and stir for 30 minutes under the condition of a rotation speed of 300 rpm at room temperature to prepare the combined polyether.

[0048] (2) Preparation of polyurethane foam: Mix the combined polyether in Example 2 and isocyanate PM-200 according to the mass ratio of 100:105, and stir on a stirrer with a rotation speed of 3000rpm for 8 seconds until the mixture is uniform. After the...

Embodiment 3

[0051] (1) Preparation of combined polyether:

[0052] 90 parts of polyether polyol mixture, 10 parts of polyester polyol PS-3152, 3 parts of foam stabilizer B8545, 1.5 parts of deionized water, 2 parts of catalyst and 20 parts of blowing agent HFC-365mfc; among them, polyether polyol The mixture is made of polyether polyol NL2011, polyether polyol YD-401P and polyether polyol SA-380 in a mass ratio of 5:1:4; the catalyst is catalyst PC5, catalyst PC77 and benzylamine by mass Mixed in a ratio of 1:3:5.

[0053] Put various raw materials into the reaction kettle according to the above formula, and stir for 25 minutes under the condition of a rotation speed of 200 rpm at room temperature to prepare the combined polyether.

[0054] (2) Preparation of polyurethane foam: Mix the combined polyether in Example 3 and isocyanate PM-200 according to the mass ratio of 100:110, and stir for 8 seconds on a stirrer with a rotation speed of 3000 rpm until the mixture is uniform. After the r...

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PUM

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Abstract

The invention discloses a polyurethane foam, and a raw material composition, a combined polyether and application thereof. The combined polyether includes the following components by weight: 100 parts of a polyol mixture, 1.5-3 parts of a foam stabilizer, 1-1.5 parts of water, 2-3.5 parts of a catalyst and 18-25 parts of a foaming agent. The polyol mixture is composed of polyether polyol and phthalic anhydride polyester polyol in a weight ratio of 7:3-9:1; polyether polyol has viscosity of 2500-17000 mPa.s at 25 DEG C, hydroxyl value of 380-500 mg KOH / g, acid value lower than 0.15 mg KOH / g and a number-average molecular weight of 350-500. The combined polyether is green and environment-friendly and does not damage the ozone layer during usage. The polyurethane foam of the invention has low thermal conductivity to achieve very good heat insulation effect, and with the dimensional stability and high compressive strength, the polyurethane foam has great application value in the solar industry.

Description

technical field [0001] The invention relates to the field of polyurethane, in particular to a polyurethane foam and its raw material composition, combined polyether and application. Background technique [0002] Due to the advantages of good thermal insulation performance, low density and high strength, rigid polyurethane foam has been widely used in thermal insulation, refrigeration, solar energy and other industries. However, with the improvement of environmental protection and low energy consumption requirements in various industries, the original polyurethane foam The prepared polyurethane product has poor thermal insulation effect and high energy consumption during use. [0003] New energy is one of the five most decisive technological fields in the world economic development in the 21st century. Solar energy is a clean, efficient and inexhaustible new energy source. At present, the governments of various countries regard the utilization of solar energy resources as a...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G18/50C08G18/42C08G101/00
CPCC08G18/4018C08G18/4804C08G2101/00C08J9/146C08J2203/142C08J2375/06C08J2475/08
Inventor 许凤华李心强于楠倪军
Owner SHANGHAI DONGDA POLYURETHANE
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