Preparation method for automobile seat sponge

A car seat and sponge technology, applied in the field of decorative materials, can solve problems such as damage to health, insufficient support, and highly toxic raw materials, and achieve high cell uniformity, high porosity, and easy control of cell structure Effect

Inactive Publication Date: 2019-01-11
FOSHAN WANYANG BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the TDI (dimethyl diisocyanate) system seat sponge; the support force is insufficient, the resilience is insufficient, the raw material

Method used

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  • Preparation method for automobile seat sponge

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] The EPDM rubber and 200# solvent oil were mixed and stirred evenly at a mass ratio of 1:5 to obtain a sol. In parts by weight, 10 parts of sol, 5 parts of methyl hydrogen-containing silicone oil, 0.2 part of platinum catalyst, 0.1 part of polyethylene glycol, 1 part of Span-80, 6 parts of cyclohexane, methyl hydrogen-containing silicone oil, platinum catalyst and polyethylene glycol are added to the sol, and after stirring evenly, a mixed sol is obtained, and the Span-80 Dissolve in cyclohexane to obtain the oil phase, at the emulsification rate of 8000r / min, add the mixed sol to the oil phase and mix evenly to obtain an emulsion, at a stirring rate of 600r / min, drop the emulsion into the liquid silicone rubber and stir evenly The multiphase emulsion was obtained, kept at 40 °C for 1 h, centrifuged to separate the product, washed with water and ethanol three times, added with accelerator TMTD, vulcanized at a temperature of 110 °C and a pressure of 0....

Example Embodiment

[0022] Example 2

[0023]The EPDM rubber and 200# solvent oil were mixed and stirred evenly at a mass ratio of 1:5 to obtain a sol. In parts by weight, 14 parts of sol, 6 parts of methyl hydrogen-containing silicone oil, 0.25 parts of platinum catalyst, 0.15 parts polyethylene glycol, 1.5 parts Span-80, 9 parts cyclohexane, methyl hydrogen-containing silicone oil, platinum catalyst and polyethylene glycol were added to the sol, and after stirring evenly, a mixed sol was obtained, and the Span-80 Dissolve in cyclohexane to obtain the oil phase, at the emulsification rate of 9000r / min, add the mixed sol to the oil phase and mix evenly to obtain an emulsion, at a stirring rate of 700r / min, drop the emulsion into the liquid silicone rubber and stir evenly The multiphase emulsion was obtained, kept at 40 °C for 1 h, centrifuged to separate the product, washed with water and ethanol for 4 times, added with accelerator TMTD, vulcanized at a temperature of 140 °C and a pressure of 0.5...

Example Embodiment

[0024] Example 3

[0025] The EPDM rubber and 200# solvent oil were mixed and stirred evenly at a mass ratio of 1:5 to obtain a sol. In parts by weight, 18 parts of sol, 7 parts of methyl hydrogen-containing silicone oil, 0.3 parts of platinum catalyst, 0.2 part of polyethylene glycol, 2 parts of Span-80, 12 parts of cyclohexane, methyl hydrogen-containing silicone oil, platinum catalyst and polyethylene glycol were added to the sol, and after stirring evenly, a mixed sol was obtained, and the Span-80 Dissolve in cyclohexane to obtain the oil phase, at the emulsification rate of 10000r / min, add the mixed sol to the oil phase and mix evenly to obtain an emulsion, at a stirring rate of 800r / min, drop the emulsion into the liquid silicone rubber and stir evenly The multiphase emulsion was obtained, kept at 40 °C for 1 h, centrifuged to separate the product, washed with water and ethanol for 5 times, added with accelerator TMTD, vulcanized at a temperature of 170 °C and a pressure...

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Abstract

The invention relates to a preparation method for automobile seat sponge and belongs to the technical field of decorative materials. According to the preparation method, silicon hydrogen condensationreaction is utilized to prepare silicone rubber foam; methyl hydrogen silicone oil diffuses from internal water phase to external water phase till reaching an interface of oil phase and external waterphase and absorbs liquid silicone rubber on the interface; hydrosilylation and condensation reaction are performed under the action of platinum catalyst, so that the methyl hydrogen silicone oil is deposited on the interface, the coating of ethylene-propylene-diene monomer is finished and a microcapsule is formed; a silicone rubber main chain is formed through the alternative linking of Si-O-Si bonds; due to a special skeleton structure, and under the action of platinum catalyst, cross-linking reaction occurs between vinyl silicone oil and hydrogen-containing silicon oil, foaming gas hydrogenis generated by hydroxyl silicone oil and hydrogen-containing silicon oil so as to perform foaming reaction, polyethylene glycol is added, and hydroxide radicals in polyethylene glycol react with hydrogen-containing silicon oil, so as to form a silicone rubber foam material. According to the preparation method provided by the invention, the unique physical properties of silicone rubber are kept and the automobile seat sponge has the advantages of light weight, heat insulation, flexibility, rebound resilience, and the like.

Description

technical field [0001] The invention relates to a preparation method of car seat sponge, which belongs to the technical field of decorative materials. Background technique [0002] Car seat sponge is an important part of the car seat, which is directly related to the comfort of the driver and passengers in the car. At present, polyurethane foams for automobiles are single-density and single-hardness sponge products. The mechanical properties of commonly used MDI system seat sponges are as follows: 25% indentation hardness is (150±20)N, 65% indentation hardness is (390±20)N )N, the density is (50±5)kg / m 3 . Although this sponge satisfies the requirements of riding to a certain extent, this product cannot meet the comfort requirements of passengers at present. If the car seat sponge is harder, it will make people uncomfortable to ride, and it will make the occupant feel tired if it is used for a long time; if it is softer, the sponge will not have enough support, the matchi...

Claims

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Application Information

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IPC IPC(8): C08L71/00C08L51/08C08L23/16C08L83/05C08L71/02C08J9/02C08J9/10C08J9/08
CPCC08J9/02C08J9/0061C08J9/08C08J9/102C08J9/103C08J2203/02C08J2203/04C08J2205/05C08J2371/00C08J2371/02C08J2423/16C08J2451/08C08J2483/05
Inventor 刘茂龙张鑫李静
Owner FOSHAN WANYANG BIOLOGICAL TECH CO LTD
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