Polyurethane foam compositions

A composition and polymer technology, applied in the field of polyurethane foam compositions, can solve problems such as poor production stability, and achieve the effects of good production stability, excellent tensile strength and elongation at break, and high elasticity

Active Publication Date: 2008-06-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of polyurethane foam composition with good production stability in order to overcome the shortcoming of poor production stability of the low-density high-resilience polyurethane foam material in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment is used to illustrate the polyurethane foam composition provided by the present invention and its preparation method.

[0022]Will contain 40 parts by weight of polyether polyol (330N), 60 parts by weight of polymer polyol (36 / 28), 2 parts by weight of diethanolamine, 2.5 parts by weight of triethanolamine, 0.6 parts by weight of dimethylethanolamine, 0.1 Parts by weight of triethylenediamine, 0.1 parts by weight of bis(dimethylaminoethyl) ether, 0.2 parts by weight of stannous octoate, 8.0 parts by weight of plasticizer dioctyl phthalate, 3.3 parts by weight of water, 0.8 parts by weight The A component of parts by weight cell opener CO100, 0.5 parts by weight of silicone oil B8738 and the B component containing 50 parts by weight of toluene diisocyanate, 20 parts by weight of polyphenyl polymethylene polyisocyanate and 15 parts by weight of modified MDI The cyanic acid index is 90), and the humidity is 50%, and the room temperature is 25°C and mixed ev...

Embodiment 2

[0024] This embodiment is used to illustrate the polyurethane foam composition provided by the present invention and its preparation method.

[0025] Prepare the polyurethane foam composition according to the method of Example 1, the difference is that the A component and the B component are mixed uniformly under the conditions of 80% humidity and a temperature of 18°C, and then poured into a mold and heated at 65°C After curing for 300 seconds, the polyurethane foam composition S2 provided by the present invention was obtained.

Embodiment 3

[0027] This embodiment is used to illustrate the polyurethane foam composition provided by the present invention and its preparation method.

[0028] Prepare the polyurethane foam composition according to the method of Example 1, the difference is that the A component and the B component are mixed uniformly under the conditions of 70% humidity and a temperature of 45°C, and then poured into a mold and heated at 65°C After curing for 300 seconds, the polyurethane foam composition S3 provided by the present invention was obtained.

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PUM

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Abstract

A polyurethane foam assemblage contains an A component and a B component and the A component contains the polyether polyol, the polymer polyol, the crosslinking agent, the catalyst, the stabilizer and the foaming agent; the B component contains the isocyanate; wherein, the catalyst is the mixed catalyst containing the 2-dimethylamine ethanol, the triethylenediamine, the Bis(2-dimethylaminoethyl) ether and the organotin. Compared with the existing high elastic foam, the polyurethane foam assemblage of the invention has lower density, and thus has lower cost and stable formula and simple process on the premise of the same tensile and tear strength. The polyurethane foam assemblage provided by the invention has the advantages of low density, high resilence, cold curing, etc., is in particular suitable for automobile cushion, sofa, mattress, etc.

Description

technical field [0001] The present invention relates to a polyurethane foam composition. Background technique [0002] High-resilience polyurethane foam is mainly made of high relative molecular weight polyether polyol polyol plus various crosslinking agents and polyisocyanate. Compared with general products, this material has higher elasticity, lower hysteresis loss, higher compression load ratio, and has a feel similar to latex surface and good air permeability. At the same time, since the high-resilience polyurethane foam can be cold-cured, it consumes less energy in production. In addition, due to the fast curing speed of high-resilience polyurethane foam, fewer molds are required for the same scale, high equipment utilization efficiency, and better economy. High-resilience polyurethane foam has gained extensive attention and application in recent years because of its many advantages. [0003] For example, CN 1513892A provides a kind of high resilience polyurethane mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/70C08G18/24C08G101/00
Inventor 徐健王胜杰秦炜炜
Owner BYD CO LTD
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