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Polyurethane material and polyurethane foam

A polyurethane material and polyurethane foam technology, applied in the field of polyurethane materials, can solve problems such as poor dimensional stability, low initial strength, and affect assembly, and achieve the effects of good dimensional stability, high initial hardness, and reduced odor

Active Publication Date: 2021-02-05
WANHUA CHEM BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polyurethane composite materials have low initial strength and poor dimensional stability when they are taken out from the high-temperature mold, and may be deformed (radian, size, etc.) There are deviations in shape and design), which will affect the subsequent assembly

Method used

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  • Polyurethane material and polyurethane foam
  • Polyurethane material and polyurethane foam
  • Polyurethane material and polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3、 comparative example 1-3

[0086] Preparation method of component A: add each component according to the corresponding parts by mass and stir and mix evenly to obtain the corresponding component A.

[0087] Odor test of polyurethane foam: mix component A and component B evenly in an open container, and obtain the corresponding polyurethane foam after it is completely foamed and cured, cut the polyurethane foam into 1-2cm cubes, and cut 45g of Put the foam cubes into a standard glass scent bottle and tighten the cap; place the scent bottle in an oven at 80°C for 2 hours, take it out, and open the bottle cap to smell. The test method refers to PV3900

[0088] Table 1 Example 1-3, comparative example 1-3 each component addition amount and performance (addition amount is mass parts)

[0089]

Embodiment 4-10、 comparative example 4

[0090] Examples 4-10, Comparative Example 4: Polyurethane foams were prepared according to the formula shown in Table 2, and the addition amounts of each component were parts by mass.

[0091] The performance test result of table 2 embodiment formula

[0092]

[0093]Initial hardness test: Control the temperature of component A and component B to 25°C, mix and stir evenly according to the corresponding proportion, then pour the mixture into a mold with an actual mold temperature of 60-65°C, close the mold and hold the pressure for 4 minutes ; Immediately after opening the mold, use a hardness tester to test the hardness of the foam in the mold. Hardness test standard refers to GB / T531.1-2008.

[0094] A component viscosity test standard refers to GB / T12008.7-2010.

[0095] As can be seen from Table 1 and Table 2, the odor of the polyurethane material prepared by the deodorant of the present invention is significantly reduced, and the polyurethane foam prepared by the form...

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Abstract

The invention discloses a polyurethane material and polyurethane foam. The polyurethane material comprises a deodorant, wherein the deodorant comprises (1) isooctyl 3,5-di-tert-butyl-4-hydroxyphenylpropionate, (2) poly(dipropylene glycol)phenyl phosphite ester, and (3) 2-(2-hydroxy-5-methylphenyl)benzotriazole or 2-hydroxy-4-n-octyloxybenzophenone; According to the invention, by adding the composition with specific components, odor removal effect is achieved, the odor of the polyurethane material is greatly reduced, and the polyurethane material is more environmentally friendly and worthy of popularization.

Description

technical field [0001] The invention relates to the field of polyurethane materials, in particular to a polyurethane material and polyurethane foam. Background technique [0002] Polyurethane honeycomb composite materials, as a new type of lightweight material, have been widely used in automotive decorative accessories such as sunroof sun visors, trunk spare tire covers, coat racks and tool boxes. [0003] Since the application environment of polyurethane honeycomb composite materials as automobile decoration accessories is relatively closed, the odor of automobile decoration accessories is very concerned, and with the development of the industry and the expansion of applications, the requirements for odor are becoming more and more strict. The lower the smell, the better. As a component of polyurethane honeycomb composites, polyurethane foam is one of the main sources of odor in polyurethane honeycomb composites. Therefore, reducing the odor of polyurethane foam is very i...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L71/02C08K5/134C08K5/3475C08K5/132C08G18/76C08G18/79C08G18/66C08G18/48C08G18/32C08G101/00
CPCC08L75/08C08G18/7671C08G18/7664C08G18/797C08G18/798C08G18/6674C08G18/48C08G18/3206C08L2203/14C08L71/02C08K5/1345C08K5/3475C08K5/132
Inventor 何国龙赵军曹铖臧竞二沈沉王晓星
Owner WANHUA CHEM BEIJING
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