Low-VOC (volatile organic compound) polyurethane foam as well as preparation method and application thereof

A technology of polyurethane foam and foaming agent, applied in transportation and packaging, roofing, vehicle parts, etc., can solve the problems of low elongation at break and high VOC value of polyurethane

Inactive Publication Date: 2018-09-28
江苏赛胜新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is that polyurethane VOC value is high in the prior art, low elongation at break The problem with providing a new low-VOC polyurethane foam

Method used

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  • Low-VOC (volatile organic compound) polyurethane foam as well as preparation method and application thereof
  • Low-VOC (volatile organic compound) polyurethane foam as well as preparation method and application thereof
  • Low-VOC (volatile organic compound) polyurethane foam as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Prepare component A: 100kg, add CHE-828D: 40kg, CHE-204: 40kg, Multranol 9151: 13kg, water: 3kg, glycerin: 2kg, TMR-2: 1kg, L-5309 into the foaming container : 1kg, the stirring time is 60min, the stirring temperature is 20°C, and component A is obtained after standing;

[0024] (2) Preparation of component B: diphenylmethane diisocyanate (MDI): 30kg and polyphenylpolymethylene polycyanate (PAPI): 70kg, the stirring time is 60min, the stirring temperature is 20°C, and stand That is component B;

[0025] (3) Prepare polyurethane foam: mix weighed component A and component B, pour into the mold after stirring and foam freely to obtain polyurethane foam, wherein the weight percentage of component A and component B is 1:1, The reaction time is 40 min, and the reaction temperature is 15°C. The quality of the foam product and the detected VOC value are shown in Table 3.

Embodiment 2～5

[0027] The experiments of Example 2 to Example 5 were carried out according to the steps of Example 1, the only difference being that the types and ratios of raw materials were different, as shown in Table 2. The quality of the foam product and the detected VOC value are shown in Table 3.

[0028] The weight percent of each component in table 2 embodiment 1 to embodiment 5

[0029]

[0030]

[0031]

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PUM

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Abstract

The invention relates to low-VOC (volatile organic compound) polyurethane foam as well as a preparation method and the application thereof, and mainly solves the problems of high VOC content and low elongation at break of a polyurethane plate in the prior art. The low-VOC polyurethane foam is formed through the reaction of a component A and a component B. The weight percentage of the component A to the component B is 1 to 0.9-1.5. The component A is prepared from the following components in percentage by weight: 30 to 60 percent of polyether polyol I having a molecular weight of 3,000 to 6,000and a hydroxyl value of 25 to 35 mgKOH / g, 30 to 50 percent of polyether polyol II having a molecular weight of 300 to 1,000 and a hydroxyl value of 200 to 500 mgKOH / g, 10 to 30 percent of polyurea polyol having a hydroxyl value of 15 to 45 mgKOH / g and viscosity of 3,000 to 4,000 Pa.s / 25 DEG C, 3 to 7 percent of a foaming agent, 1 to 2 percent of a catalyst, 2 to 5 percent of a crosslinking agentand 1 to 2 percent of silicon oil; the component B is prepared from the following components in parts by weight: 5 to 40 parts of diisocyanate and 50 to 98 parts of polyphenyl polymethylene polycyanate. The technical scheme of the preparation method of the low-VOC polyurethane foam well solves the problem, and the low-VOC polyurethane foam can be applied to an automobile skylight visor material oran automobile roof material.

Description

technical field [0001] The invention belongs to a low-VOC polyurethane foam and its preparation method and application. Background technique [0002] Polyurethane foam plays an important role in automotive interior parts. The sunroof sunshade and roof of the car are made of polyurethane semi-rigid foam. With the enhancement of people's environmental protection awareness, the requirements for the odor and aldehyde content of automotive interior parts are getting higher and higher. The more stringent, the removal of aldehydes in the automotive industry has become a technical problem. In the prior art, polyethers produced by bimetallic catalysts and polyethers produced by KOH can reduce aldehydes, but none of them can meet the national standards. VOC mainly includes aldehydes, amines, benzene compounds, and low molecular alcohols. According to the national standard GB18586-2001, choose a stricter definition of VOC, the general term for organic volatiles with a melting point be...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/64C08G18/48C08G18/32B60J7/00C08G101/00
CPCB60J7/00C08G18/4804C08G18/6415C08G18/6677C08G18/6685C08G18/6688C08G2110/0083
Inventor 陈观洪蒋海平吴迪
Owner 江苏赛胜新材料科技有限公司
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