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A kind of rapid demoulding polyurethane combination polyether, polyurethane foam and preparation method thereof

A technology of polyurethane foam and combined polyether, applied in the field of materials, can solve the problems of huge site and equipment investment, slow return on assets, etc., and achieve the effects of increasing production capacity, profit margins, and low thermal conductivity

Active Publication Date: 2020-11-24
SHANGHAI DONGDA POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the home appliance industry is still dominated by semi-automated production and is still a labor-intensive industry, increasing production generally requires adding production lines. However, which production line to increase requires a huge investment in space and equipment, as well as a large number of personnel for production. Return on assets slow
Another way is to improve its production efficiency, and drive the increase of production capacity with the improvement of efficiency. At present, the fastest mold opening time for refrigerators in my country is 180s. There are applications, this method can generate timely returns with basically no additional investment, and it is also the main solution recommended by major refrigerator manufacturers

Method used

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  • A kind of rapid demoulding polyurethane combination polyether, polyurethane foam and preparation method thereof
  • A kind of rapid demoulding polyurethane combination polyether, polyurethane foam and preparation method thereof
  • A kind of rapid demoulding polyurethane combination polyether, polyurethane foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Prepare the first component according to the ingredients in the table below

[0071] raw material name Mass parts / parts NJ-6249 30 TAE-470 40 NJ-8243 25 GE-303 5 glycerin 4 L-6863 3 Dabco BL-11 0.6 Dabco DMDEE 0.4 Dabco TMR-30 0.7 Dabco T-12 0.1 Deionized water 2.0 Cyclopentane 15

[0072] Pour the raw materials mentioned in the above table into the container according to the specified ratio, and mix them evenly with an electric mixer to make the first component; then pour the first component and the second component into the container according to the weight ratio of 1:1.2 , then use an electric mixer to stir for 6 seconds, pour the evenly mixed liquid into a mold with a thickness of 10cm at a constant temperature of 45-50°C, close the mold, place it at a constant temperature of 45°C for 150s, and then open the mold to get this Apply the quick release polyurethane foam.

Embodiment 2

[0074] Prepare the first component according to the ingredients in the table below

[0075]

[0076]

[0077] Pour the raw materials mentioned in the above table into the container according to the specified ratio, and mix them evenly with an electric mixer to make the first component; then pour the first component and the second component into the container according to the weight ratio of 1:1.25 , then use an electric mixer to stir for 6 seconds, pour the evenly mixed liquid into a mold with a thickness of 10cm at a constant temperature of 45-50°C, close the mold, place it at a constant temperature of 45°C for 140s, and then open the mold to get this Apply the quick release polyurethane foam.

Embodiment 3

[0079] Prepare the first component according to the ingredients in the table below

[0080]

[0081]

[0082] Pour the raw materials mentioned in the above table into the container according to the specified ratio, and mix them evenly with an electric mixer to make the first component; then pour the first component and the second component into the container according to the weight ratio of 1:1.15 , then use an electric mixer to stir for 6 seconds, pour the evenly mixed liquid into a mold with a thickness of 10cm at a constant temperature of 45-50°C, close the mold, place it at a constant temperature of 45°C for 145s, and then open the mold to get this Apply the quick release polyurethane foam.

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Abstract

The invention relates to rapidly-demoulded polyurethane combined polyether. The rapidly-demoulded polyurethane combined polyether is prepared from the following raw materials: first polyether polyol,second polyether polyol, third polyether polyol, fourth polyether polyol, a cross-linking agent, a foam stabilizing agent, a composite catalyst, a chemical foaming agent and a physical foaming agent.The invention also provides polyurethane foam which is prepared from a first component and a second component, wherein the first component comprises the above-mentioned rapidly-demoulded polyurethanecombined polyether; and the second component comprises polyisocyanate. The invention also provides a method for preparing the rapidly-demoulded polyurethane combined polyether. The invention also provides a preparation method for the polyurethane foam containing the above-mentioned rapidly-demoulded polyurethane combined polyether. The invention has the following beneficial effects: the time of demoulding in household appliance production is accelerated; the production efficiency of household appliances is greatly increased; the production capacity and profit space of a refrigerator enterpriseare improved; meanwhile, the refrigerator can be helped to achieve stricter energy consumption requirements.

Description

technical field [0001] This application relates to the field of materials technology. Specifically, the application relates to a rapid release polyurethane composite polyether, a polyurethane foam comprising the rapid release polyurethane composite polyether, the preparation method of the rapid release polyurethane composite polyether, and the preparation of the polyurethane foam method. Background technique [0002] In recent years, the white goods industry, which is dominated by refrigerators and freezers, has been at the forefront of the manufacturing industry, and the production scale of my country's home appliance industry has ranked first in the world. In the low-end market, cost is the main means of competition. In the high-end market, With new concepts such as energy saving and environmental protection, the industry will be promoted. In recent years, the competition in this industry has been fierce. Some small and medium-sized manufacturers have been gradually elimi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/14C08G18/48C08G18/32C08G18/66C08G18/79
CPCC08G18/3206C08G18/482C08G18/4829C08G18/6677C08G18/794C08J9/141C08J9/144C08J9/146C08J2203/14C08J2203/142C08J2203/162C08J2203/184C08J2203/204C08G2110/005
Inventor 王丽丽于楠汤道玲李明王伟
Owner SHANGHAI DONGDA POLYURETHANE
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