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Polyurethane foaming raw material

A foaming raw material, polyurethane technology, applied in polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve the problem of poor thermal insulation performance of hot melt adhesives, large amount of hot melt adhesives, and affecting the thermal insulation performance of VIP boards, etc. problem, to achieve the effect of good thermal insulation performance and high viscosity

Inactive Publication Date: 2020-10-23
CHANGHONG MEILING CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will cause the VIP board to debond and affect the appearance
At the same time, the edge effect of the VIP board increases, which affects the thermal insulation performance of the VIP board, thereby reducing the thermal insulation performance of the entire product.
It is more common in the prior art to spray a layer of hot-melt glue thicker than the outer diameter of the condenser on the side panel of the refrigerator by using a hot-melt glue jet machine, and then paste the VIP board, but this method consumes a large amount of hot-melt glue and costs At the same time, the thermal insulation performance of hot melt adhesive is poor, which affects the overall thermal insulation performance

Method used

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  • Polyurethane foaming raw material
  • Polyurethane foaming raw material
  • Polyurethane foaming raw material

Examples

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specific Embodiment 1

[0032] A polyurethane foam raw material, comprising white material and black material; the mass ratio of white material and black material is 1.2;

[0033] The black material is diphenylmethane diisocyanate;

[0034] The white material is made of the following raw materials in parts by weight:

[0035]

[0036] The preparation and use process of above-mentioned polyurethane foam raw material are as follows:

[0037] Step 1. Under the condition that the temperature of the material is 16-20°C, mix the white material according to the weight part, and store it in the white material tank;

[0038] Step 2. Store the black material in the black material tank under the condition that the material temperature is 16-20°C;

[0039] Step 3: Inject the white material and black material into the inner cavity of the injection gun head at high speed and high pressure at the same time, mix well and spray it on the place to be bonded through the nozzle of the gun head;

[0040] Step 4. Ma...

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Abstract

The invention discloses a polyurethane foaming raw material, and belongs to the technical field of foaming materials. The polyurethane foaming raw material comprises a white material and a black material, wherein the mass ratio of the white material to the black material is 1.1-1.4; the black material is diphenylmethane diisocyanate; and the white material is prepared from the following raw materials in parts by weight: 35-45 parts of polyester polyol I, 35-50 parts of polyester polyol II, 15-35 parts of polyester polyol III, 1-2 parts of water and 2-4 parts of an auxiliary agent. The polyurethane foaming raw material disclosed by the invention can be used for bonding two irregular contact surfaces, can be used for uniformly filling the two irregular contact surfaces, has good thermal insulation performance and relatively high viscosity, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of foaming materials, in particular to a polyurethane foaming raw material. Background technique [0002] With the development of technology, some products need to bond two parts with uneven contact surfaces together, and play the role of heat preservation. For example, on both sides of the refrigerator box, flat vacuum insulation panels (hereinafter referred to as "VIP panels") should be bonded to the box shell with the condenser. The condenser is a long round tube (outer diameter 4.7mm), which is arranged in a dense S shape on both sides of the product (the interval between each row is about 100mm). When the VIP plate is directly attached to the condenser, because the outer diameter blocks , the fit is not tight enough, leaving a gap in the middle. This will cause the VIP board to debond and affect the appearance. At the same time, the edge effect of the VIP board is increased, which affects the thermal...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/42C09J175/06C08G101/00
CPCC08G18/4202C08G18/7671C09J175/06
Inventor 刘鹏吴园江峰
Owner CHANGHONG MEILING CO LTD