Multi-element premixed foaming device and method

A foaming device and premixing technology, applied in the field of household appliance production technology, can solve problems to be improved, etc., and achieve the effects of widening the selection range, reducing density and foam thermal conductivity, and improving stability

Inactive Publication Date: 2019-12-20
HEFEI HUALING CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing premixing method and foaming process still need to be improved

Method used

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  • Multi-element premixed foaming device and method
  • Multi-element premixed foaming device and method
  • Multi-element premixed foaming device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] The multi-component premixing foaming device and foaming method of the present invention are used to prepare foam products, wherein the white material premixing system adopts polyol composite material, and the high boiling point foaming agent adopts cyclopentane and HFC-245fa; the black material premixing system Isocyanates are used, and HCFO-1233zd and R134a are used as low-boiling blowing agents. The foaming process conditions are set as:

[0089] The material temperature of the black material tundish is 5°C, and that of the white material tundish is 35°C;

[0090] The material temperature of the black material working tank is 5°C, and the material temperature of the white material working tank is 32°C.

Embodiment 2

[0092] Foam products are prepared by adopting the multi-component premixing foaming device and foaming method of the present invention, wherein the white material premixing system adopts polyol composite material, and the high boiling point foaming agent adopts cyclopentane and HFC-365mfc; the black material premixing system Isocyanates are used, and HFC-245fa and HFO-1234ze are used as low-boiling blowing agents. The foaming process conditions are set as:

[0093] The material temperature of the black material tundish is 15°C, and that of the white material tundish is 25°C;

[0094] The material temperature of the black material working tank is 15°C, and the material temperature of the white material working tank is 25°C.

Embodiment 3

[0096] Foam products are prepared by adopting the multi-component premixing foaming device and foaming method of the present invention, wherein the white material premixing system adopts polyol composite material, and the high boiling point foaming agent adopts cyclopentane and HFO-1336mzz; the black material premixing system Isocyanates are used, and HCFO-1233zd, methyl formate and R134a are used as low-boiling blowing agents. The foaming process conditions are set as:

[0097] The material temperature of the black material tundish is 5°C, and that of the white material tundish is 20°C;

[0098] The material temperature of the black material working tank is 0°C, and the material temperature of the white material working tank is 18°C.

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Abstract

The invention discloses a multi-element premixed foaming device and method. The multi-element premixed foaming device comprises a white material premixed system, a black material premixed system, a temperature controlling system and a foaming machine, wherein the white material premixed system comprises a polyhydric alcohols composite storage tank, a plurality of high boiling point foaming agent storage tanks, a white material premixed middle tank and a white material premixed working tank; the black material premixed system comprises an isocyanate storage tank, a plurality of low boiling point foaming agent storage tanks, a black material premixed middle tank and a black material premixed working tank; and the temperature controlling system comprises the white material premixed middle tank and a white material premixed working tank temperature controlling device, the black material premixed middle tank and a black material premixed working tank temperature controlling device. According to the multi-element premixed foaming device, a foaming agent with the high boil point is premixed into a white material, a foaming agent with the low boil point is premixed into a black material, the temperature of a white material premixed material and the temperature of a black material premixed material are controlled correspondingly, the performance of foaming agents with the different properties can be further advantageously developed, meanwhile, the selectable range of the foaming agents is widened, and prepared foam articles are better in performance.

Description

technical field [0001] The invention relates to the field of production technology of household appliances, in particular, the invention relates to a multi-component premixed foaming device and a foaming method. Background technique [0002] Foaming is one of the core processes in the production of household appliances such as refrigerators, freezers, and water heaters. The foaming materials currently in use mainly refer to rigid polyurethane foams. And the foaming agent participates in the reaction together. The premixing of foaming agent and foaming material is an essential work before foaming. The method currently used in the industry is to premix the foaming agent and polyol composite material first, and then mix it evenly with the black material through the nozzle Foam molding. After preliminary temperature adjustment, the premixed material is transported to the working tank for further temperature adjustment. The temperature of the working tank for black and white ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/08C08J9/04C08G101/00
CPCC08G18/08C08G2101/00C08J9/04
Inventor 赵士虎郎俊杰朱洪阳
Owner HEFEI HUALING CO LTD
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