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Production process of high-crystal molecule slow-rebound polyurethane

A production process and slow rebound technology, which is applied in the production process of polyurethane foam, can solve the problems that hinder the promotion and limitation of sponge use, achieve high air permeability, large and uniform cells, and reduce costs

Inactive Publication Date: 2014-09-24
SHANGHAI GLORY HOME TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by equipment and technology, the traditional method can only produce 1m each time 3 products, seriously hindering the promotion of the use of this type of sponge

Method used

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  • Production process of high-crystal molecule slow-rebound polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: The raw material components are 60 parts of Mn750, 30 parts of Mn3000, 10 parts of polymer polyol, 40 parts of isocyanate, 1 part of foam stabilizer, 0.5 part of triethylenediamine, 0.05 part of stannous octoate, 1.9 parts of water, 5.0 parts of foam cell opener, the stirring speed is 2000 rpm, the air injection rate is 200 ml / min, and the foaming time is 5 minutes.

[0037] The cells of the high crystal molecular sponge obtained by the above method are uniform and coarse, and the product density is 48kg / m 3 , after the whole foam removes the film, the cells are completely released, so that the product has good air permeability.

Embodiment 2

[0038] Example 2: The raw material components are 55 parts of Mn750, 35 parts of Mn3000, 10 parts of polymer polyol, 30 parts of isocyanate, 1.5 parts of foam stabilizer, 0.75 part of triethylenediamine, 0.25 part of stannous octoate, 2.5 parts of water, 10 parts of foam cell opener, the stirring speed is 2500 rpm, the air injection volume is 300 ml / min, and the foaming time is 3 minutes

Embodiment 3

[0039] Example 3: The raw material components are 60 parts of Mn750, 30 parts of Mn3000, 10 parts of polymer polyol, 30 parts of isocyanate, 0.5 part of foam stabilizer, 0.4 part of triethylenediamine, 0.03 part of stannous octoate, 1 part of water, 0.5 parts of foam cell opener, the stirring speed is 500 rpm, the air injection rate is 0.1 ml / min, and the foaming time is 3 minutes.

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Abstract

The invention relates to the technical field of polymer materials, and particularly relates to a production process of polyurethane foam. The production process of high-crystal molecule slow-rebound polyurethane comprises the following steps: 1) storing raw materials, controlling the temperature; 2) conveying the raw materials to a mixing chamber of an assembly line foaming machine, performing low-speed stirring, continuously injecting certain amount of air during the stirring process; 3) conveying the stirred materials to a foaming chamber, performing foaming; 4) conveying the foamed materials to a curing chamber, performing natural curing; 5) conveying the cured polyurethane foam to a treatment platform, and performing post-treatment to obtain the finished product. With the above technical scheme, the slow-rebound polyurethane prepared in the invention is large and uniform in foam pores, has filtration effect after subsequent foam treatment, can be produced continuously by a routine assembly line foaming machine, can increase the production efficiency and reduce the cost, and has more obvious volume advantages when compared with products prepared by conventional processes.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a production process of polyurethane foam. Background technique [0002] At present, the common slow rebound sponges in the market have a certain degree of closure, and the opening size of the cells is small, which leads to the inability to have a certain filtering effect after the subsequent foaming treatment, and the air permeability is not good, and due to the small size of the cells As a result, a certain amount of water remains in the sponge body after washing, so that the sponge body cannot be dried in a short time. Usually batch production is used to produce high crystal molecular slow rebound polyurethane to solve the problems of small opening size and poor air permeability. The cells of the polyurethane foam produced thereby have the characteristics of uniform distribution and large opening size. After the whole foam removal process, the finished sponge has go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/38C08J9/08C08L75/08
Inventor 丘国豪
Owner SHANGHAI GLORY HOME TECH CO LTD
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