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Formula of cold curing foam and forming technique

A foamed plastic and molding process technology, applied in the field of polyurethane foaming, can solve the problems affecting the performance of seat cushions, low reactivity, collapse, etc., and achieve the effects of low cost, short curing time and low production temperature

Inactive Publication Date: 2008-08-27
JIANGSU DEXIANG POLYURETHANE SEAT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some seat cushions on the market will collapse after being used for a period of time. The reason is that the main raw material of the foam plastic formula is general-purpose polyether, and a thermal molding foaming process is adopted, and fillers are added, and the material is foamed during pouring. Afterwards, further high-temperature curing is required to meet the demoulding requirements, and the reactivity is low, which seriously affects the performance of the seat cushion.

Method used

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  • Formula of cold curing foam and forming technique
  • Formula of cold curing foam and forming technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Cold curing foam is composed of two components, white material and black material, and is a kind of polyurethane foam material formed by the mutual reaction of black material and white material. The white material component is composed of the following raw materials in weight ratio: polyether 3628: 40%, polyether 330N: 25%, water: 2.8%, catalyst 8134: 0.9%, crosslinking agent 2186: 1.9%, triethanolamine: 0.6%, silicone oil 8715: 0.3%, silicone oil 10366: 0.1%, catalyst A-1: ​​0.05%.; the black material component is composed of the following raw materials by weight ratio: TDI (i.e. toluene diisocyanate): 45%, MDI (i.e. Polyphenyl polymethyl polyisocyanate): 55%.

[0015] Proportion the above-mentioned white material and black material components according to the weight ratio of 100:42. Specifically, the white material and the black material are respectively prepared in the two reaction tanks of the white material and the black material of the high-pressure foaming machin...

Embodiment 2

[0017] Cold curing foam is composed of two components, white material and black material, and is a kind of polyurethane foam material formed by the mutual reaction of black material and white material. When preparing, the white material component is composed of the following raw materials in weight ratio: polyether 3628: 45%, polyether 330N: 35%, water: 2.9%, catalyst 8134: 0.95%, crosslinking agent 2186: 2%, triethanolamine: 0.7%, Silicone Oil 8715: 0.4%, Silicone Oil 10366: 0.2%, Catalyst A-1: ​​0.06%.; The black material component is composed of the following raw materials by weight ratio: TDI: 48%, MDI: 52%.

[0018] Proportion the above-mentioned white material and black material components according to the weight ratio of 100:45. Specifically, the white material and the black material are respectively prepared in the two reaction tanks of the white material and the black material of the high-pressure foaming machine. Stir for more than 60 minutes, and stir for black mate...

Embodiment 3

[0020] Cold curing foam is composed of two components, white material and black material, and is a kind of polyurethane foam material formed by the mutual reaction of black material and white material. When preparing, the white material component is composed of the following raw materials in weight ratio: polyether 3628: 68%, polyether 330N: 53%, water: 3.0%, catalyst 8134: 1.0%, crosslinking agent 2186: 2.1%, triethanolamine: 0.8%, Silicone Oil 8715: 0.5%, Silicone Oil 10366: 0.3%, Catalyst A-1: ​​0.1%.; The black material component is composed of the following raw materials by weight ratio: TDI: 55%, MDI: 45%.

[0021] Proportion the above-mentioned white material and black material components according to the weight ratio of 100:48. Specifically, the white material and the black material are respectively prepared in the two reaction tanks of the white material and the black material of the high-pressure foaming machine, and the white material and the black material are prepa...

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Abstract

The invention discloses a formulation of cold curing foam in the polyurethane foaming technical field and a shaping technique, which shapes in molding through injecting material on a high pressure foaming machine after stirring white material and black material which are matched according to weight proportion, wherein white material: black material= 100:42-48, the white material is formed by following raw materials according to weight percentage, 40-68% polyether 3628, 25-53% polyether 330N, 2.8-3.0% water, 0.9-1.0% catalyst 8134, 1.9-2.1% cross linking agent 2186, 0.6-0.8% triethanolamine, 0.3-0.5% silicon oil 8715, 0.1-0.3% silicon oil 10366 and 0.05-0.1% catalyst A-1, and the black material is formed by following raw materials with weight percentages 45-55% TDI and 45-55% MDI. The technique has excellent manufacturability, high rebound property and duty ratio, low technique temperature and short curing time.

Description

technical field [0001] The invention relates to the technical field of polyurethane foaming, in particular to the formulation of polyurethane foam plastics used for motorcycle saddles and car seats and the foaming molding process of cold-cured foam plastics. Background technique [0002] Polyurethane foam is a flexible foam developed in recent years. It is made of polyether polyol with a high amount of primary hydroxyl at the terminal by cold aging process. It has excellent resilience, low hysteresis loss and high load ratio characteristics. The motorcycle saddles and car seats that people ride require comfortable and durable high-resilience foam plastics. Seat cushions made of materials with high resilience performance and large load ratio make people feel comfortable. At present, some seat cushions on the market will collapse after being used for a period of time. The reason is that the main raw material of the foam plastic formula is general-purpose polyether, and a ther...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/48C08G18/16B29C44/04B29C44/60C08G101/00
Inventor 朱国跃施冬芳崔小平
Owner JIANGSU DEXIANG POLYURETHANE SEAT CO LTD
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