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Low-odor and low-emission TDI (toluene diisocynate) polyurethane foam material for automobile seat and preparation method thereof

A technology of polyurethane foam and car seats, applied in the field of low-odor and low-emission TDI polyurethane foam materials for car seats, to solve the problem of odor and emission of VOC harmful substances, and eliminate the emission of amines and siloxanes Disperses and enhances the effect of safety

Pending Publication Date: 2022-03-25
长春富晟汽车技术研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is just to provide a kind of low odor for automobile seat, low emission TDI polyurethane foam material, also provides a kind of preparation method of automobile seat low odor, low emission TDI polyurethane foam mater

Method used

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  • Low-odor and low-emission TDI (toluene diisocynate) polyurethane foam material for automobile seat and preparation method thereof
  • Low-odor and low-emission TDI (toluene diisocynate) polyurethane foam material for automobile seat and preparation method thereof
  • Low-odor and low-emission TDI (toluene diisocynate) polyurethane foam material for automobile seat and preparation method thereof

Examples

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Effect test

preparation example Construction

[0036] The car seat of the present invention is used low odor, the preparation method of low emission TDI system polyurethane foam material, comprises the steps:

[0037] Mix the catalyst, surfactant, all-water foaming agent and deionized water with polyether polyol in proportion to form material B, TDI is used as material A, and the ratio of material B to material A is calculated according to the required isocyanic acid index, in order to maintain a good The rising and maturing state of the foam and the overall performance of the foam, the use range of the isocyanate index is controlled between 70 and 110, and the density of the finished foam is controlled at 30kg / m 3 ~60kg / m 3 In between, rapid mixing and stirring is carried out under mechanical pouring or mechanical stirring, and pouring into a fixed mold cavity for foaming, and the temperature of the mold cavity is kept at 40°C to 70°C.

[0038] The performance index of making foam is as follows:

[0039]

[0040] ...

Embodiment 1

[0042] A low-odor, low-emission TDI system polyurethane foam material for car seats is obtained by mixing and stirring material A and material B, pouring them into a fixed mold cavity, foaming and curing them at a mold temperature of 40°C to 70°C; In parts by weight, wherein, material A is 34 parts of toluene diisocyanate (TDI), material B includes 100 parts of polyether polyol and polymer polyol, 2.5 parts of full water blowing agent, 0.7 part of reactive amine catalyst, surface Active agent 0.6 part.

[0043] Wherein, the structure of the reactive amine catalyst is:

[0044]

[0045] The structure of described tensio-active agent is as follows:

[0046]

[0047] A method for preparing a low-odor, low-emission TDI system polyurethane foam material for car seats, comprising the following steps: mixing a catalyst, a surfactant, an all-water foaming agent and deionized water with polyether polyol in proportion to form material B, TDI is used as material A, and the ratio ...

Embodiment 2

[0049]A low-odor, low-emission TDI system polyurethane foam material for car seats is obtained by mixing and stirring material A and material B, pouring them into a fixed mold cavity, foaming and curing them at a mold temperature of 40°C to 70°C; In parts by weight, wherein, material A is 50 parts of toluene diisocyanate (TDI), material B includes 100 parts of polyether polyol and polymer polyol, 4.0 parts of full water foaming agent, 0.8 part of reactive amine catalyst, surface Active agent 0.8 part.

[0050] Wherein, the structure of the reactive amine catalyst is:

[0051]

[0052] The structure of described tensio-active agent is as follows:

[0053]

[0054] A method for preparing a low-odor, low-emission TDI system polyurethane foam material for car seats, comprising the following steps: mixing a catalyst, a surfactant, an all-water foaming agent and deionized water with polyether polyol in proportion to form material B, TDI is used as material A, and the ratio o...

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Abstract

The invention relates to a low-odor and low-emission TDI (toluene diisocynate) polyurethane foam material for automobile seats and a preparation method thereof, the low-odor and low-emission TDI polyurethane foam material is prepared by mixing and stirring a material A and a material B and pouring the mixture into a fixed mold cavity for foaming, the material A comprises 30-50 parts of toluene diisocynate, and the material B comprises 100 parts of polyether polyol and polymer polyol, 2.5-4.0 parts of an all-water foaming agent, 0.3-1.0 part of a catalyst and 0.5-1.0 part of a surfactant. The reaction type amine catalyst plays a catalytic role in inducing a gel reaction and a foaming reaction, and is connected to a polyurethane macromolecular structure through chemical bonds, so that amine substance emission and siloxane substance emission in polyurethane foam of a traditional amine catalyst are fundamentally eliminated; therefore, the odor and VOC emission performance of the polyurethane foam material are reduced; the problems of odor generated by automobile interior foam and emission of VOC (volatile organic compounds) harmful materials are effectively solved, and the seat foaming safety and the automobile indoor air quality are improved.

Description

technical field [0001] The invention belongs to the technical field of car seats, in particular to a low-odor and low-emission TDI polyurethane foam material for car seats and a preparation method thereof. Background technique [0002] At present, most automotive interior foams use amine-catalyzed polyurethane foam, but amine-catalyzed polyurethane foam will cause the emission of amine substances and siloxane substances, which have a strong odor and strong VOC emission. [0003] Prior art CN 111533872 A discloses a low-odor, low-VOC polyurethane foam material for car seats and its preparation method. Although the polyurethane foam material can also achieve low odor and low VOC effects, the method of physical adsorption by adding activated carbon adsorption cannot fundamentally solve the problem from the raw materials, and there is a risk of desorption and secondary release in high temperature environments; The way of adsorption will also prevent the process of releasing har...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G18/63C08G18/18C08G101/00
CPCC08G18/4072C08G18/48C08G18/632C08G18/1825C08G18/18C08G2110/0083
Inventor 李宜炜于慧杰牛未冬王占明李洋
Owner 长春富晟汽车技术研发有限公司