Conjugate polyether, polyurethane raw material composition, polyurethane foams and applications thereof

A raw material composition and a technology for combining polyethers, which are applied in the field of polyurethane, can solve the problems of difficulty in meeting use requirements, reduced dimensional stability, poor thermal insulation effect, etc., and achieve the effects of small quality, low density and low cost

Inactive Publication Date: 2011-04-27
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 problem that the existing low-density polyurethane foam has greatly increased thermal conductivity, reduced dimensional stability, and significantly reduced strength compared with medium- and high-density polyurethane foams, so that it is difficult to meet the requirements of interior wall materials, building materials, etc. Sandwich panels, car roof spraying materials, etc., defects such as poor thermal insulation effect, provide a combined polyether, a raw material composition of polyurethane foam, and polyurethane foam prepared from the raw material composition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Combination polyether formula: the following components are parts by weight: 8 parts for EP-330N, 2 parts for SU-450L, 2 parts for water, 0.06 parts for L-580, 1 part for NP-10, and 1 part for PC52 0.03 parts, NE-300 is 0.3 parts, DEEP is 1.3 parts.

[0047] The preparation method of the combined polyether: put the above-mentioned components into the reaction kettle according to their parts by weight, control the rotation speed at 500 rpm, stir at room temperature for 2 hours, and discharge the materials.

[0048] Polyurethane raw material composition formula: 1 part of the combined polyether, 1 part of polymerized MDI.

[0049] Preparation and application of polyurethane foam: The combined polyether and polymerized MDI in the above polyurethane raw material composition are sprayed on the roof of passenger cars through a low-pressure spraying machine. The spraying thickness is 30-50mm and the density is 10kg / m 3 polyurethane foam.

[0050] The thermal conductivity of th...

Embodiment 2

[0052] The formula of combined polyether: the following components are parts by weight: EP-330N is 6 parts, SU-450L is 4 parts, water is 1.6 parts, L-580 is 0.11 parts, NP-10 is 1.5 parts, PC52 is 0.05 parts, 0.5 parts for NE-300, and 1.51 parts for DEEP.

[0053] The preparation method of the combined polyether: put the above-mentioned components into the reaction kettle according to their parts by weight, control the rotation speed at 500 rpm, stir at room temperature for 2 hours, and discharge the materials.

[0054] Polyurethane raw material composition formula: the following components are in parts by weight: 1 part of the combined polyether and 1.5 parts of polymerized MDI.

[0055] Preparation and application of polyurethane foam: The combination of polyether and polymerized MDI in the above polyurethane raw material composition is used to foam double-sided metal sheets on a continuous sheet production line. The thickness of the foam is 50mm, and the overall packing den...

Embodiment 3

[0058] The formula of combined polyether: the following components are parts by weight: 7.5 parts for EP-330N, 2.5 parts for SU-450L, 1.5 parts for water, 0.11 parts for L-580, 1.01 parts for NP-10, and 1.01 parts for PC52 0.045 parts, 0.375 parts for NE-300, and 1.97 parts for DEEP.

[0059] The preparation method of the combined polyether: put the above-mentioned components into the reaction kettle according to their parts by weight, control the rotation speed at 500 rpm, stir at room temperature for 2 hours, and discharge the materials.

[0060] Polyurethane raw material composition formula: the following components are in parts by weight: 1 part of the combined polyether, 1.25 parts of polymerized MDI.

[0061] Preparation and application of polyurethane foam: use a low-pressure spraying machine to carry out polyurethane insulation construction on indoor roofs with the combined polyether and polymeric MDI in the above polyurethane raw material composition. The foam thickne...

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Abstract

The invention provides conjugate polyether, comprising 6-8 parts of polyether polyol EP-330N, 2-4 parts of polyether polyol SU-450L, 0.06-0.15 parts of non-hydrolytic surface active agent, 1.5-2 parts of water, 0.8-1.5 parts of nonyl phenol polyoxyethylene ether NP-10, 0.03-0.05 part of foaming catalyst PC52, 0.3-0.5 part of foaming catalyst NE300 and 1.3-2 parts of ethyl diethyl phosphate. The invention further provides a polyurethane raw material composition, polyurethane foams and applications thereof. Compared with the conventional polyurethane foams, the polyurethane foams in the invention have low density, low mass, proper aperture ratio, good sound-proofing effect, and good heat insulating effect, and compared with the polyurethane foams with middle and high density, the cost of the polyurethane foams in the invention is lower. While the polyurethane foams in the invention have low density, the polyurethane foams can reach the application standards of thermal insulation materials, sound-proofing materials, sandwich panels for construction, spraying materials for ceilings of automobiles or filling materials and the like. The conjugate polyether is a total-moisture foaming system, has no damage to ozone layer and has the advantage of environmental protection.

Description

technical field [0001] The invention relates to the field of polyurethane, in particular to a combined polyether, a polyurethane raw material composition, polyurethane foam prepared from the principle composition and its application. Background technique [0002] Polyurethane rigid foam is the best among all insulating materials at present, and is widely used as heat insulating and structural materials in construction, transportation, refrigerator freezers, petrochemical pipelines, aviation and military, etc. With the increasing shortage of energy in the world, it is the current development trend to use resources reasonably, reduce energy consumption and increase environmental protection. At present, the spray foam used in domestic building wall insulation requires a density greater than 35kg / m 3 , the density applied to the sandwich panel is 40-45kg / m 3 , the density of thermoplastic polyurethane sprayed on the roof of the car is greater than 25kg / m 3 , are medium and hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/00C08J9/08C08K5/521C08G18/48C08G18/76C08L75/08C09D175/08C08G101/00
Inventor 李心强李欣许凤华信延垒
Owner SHANGHAI DONGDA POLYURETHANE
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