Palm wax-silicon resin compound high-resilience polyurethane foaming product release agent

A technology for foaming products and release agents, which is applied in the field of release agents for high-resilience polyurethane foam products compounded with palm wax and silicone resin. Problems such as complex edges and corners of the product, to achieve the effect of improving the unevenness of the cells, high demoulding times, and low mold pollution

Inactive Publication Date: 2017-04-05
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for complex high-resilience polyurethane foam products, usually because the foaming process of high-resilience polyurethane is different from the production process of traditional solid polyurethane, there are many influencing factors, and its foaming quality directly affects product quality, and its The edges and corners of the product are complex and meticulous, and have high requirements for dimensional stability and surface finish. If traditional wax-based or silicon-based release agents are used, the rate of closed cells will increase, the rate of defective products will increase, the number of demoulding times will decrease, and the mold will be easily polluted, etc. problem

Method used

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  • Palm wax-silicon resin compound high-resilience polyurethane foaming product release agent
  • Palm wax-silicon resin compound high-resilience polyurethane foaming product release agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Heat and melt 3.0wt.% palm wax and 1.0wt.% silicone resin at 95°C. After the melt is completely melted, continue stirring for 3 minutes, then lower the temperature to 85°C, and add 0.4wt.% Tween80 With 0.4wt.% of SPAN80, the emulsion was ultrasonically oscillated for 90 seconds and emulsified with a high-shear homogeneous emulsifier for 1 hour (stirring speed was 20000r / min), and finally 55.2wt.% solvent was gradually added dropwise to form a thick The emulsion is the stock solution of release agent for high-resilience polyurethane foam products compounded with palm wax and silicone resin. It can be sprayed directly after adding 40.0wt.% n-heptane at room temperature.

[0018] Emulsion stability: After being centrifuged at 3000r / min for 5 minutes, the release agent emulsion prepared by this formula will not be demulsified or delaminated.

[0019] Release effect: Heat the polyurethane foam mold to 60°C, spray the release agent evenly on the surface, and dry th...

Embodiment 2

[0021] Example 2: Heat and melt 3.0wt.% palm wax and 1.0wt.% silicone resin at 95°C. wt.% fatty alcohol polyoxyethylene ether and 0.5wt.% zinc stearate, then ultrasonically oscillate the emulsion for 90 seconds and emulsify it with a high-shear homogeneous emulsifier for 1 hour (stirring speed is 20000r / min), Finally, add 55.0wt.% solvent gradually to form a thick emulsion, which is the stock solution of release agent for high resilience polyurethane foam products compounded with palm wax and silicone resin. When using it, add 40.0wt.% n-heptane at room temperature It can be used directly by spraying.

[0022] Emulsion stability: After being centrifuged at 3000r / min for 5 minutes, the release agent emulsion prepared by this formula will not be demulsified or delaminated.

[0023] Release effect: heat up the polyurethane foam mold to 70°C, spray the release agent evenly on the surface, and dry the solvent with a spray gun, then mix the high-resilience polyurethane A and B mate...

Embodiment 3

[0024] Example 3: Heat and melt 2.0wt.% palm wax and 2.0wt.% silicone resin at 95°C. After the melt is completely melted, continue stirring for 3 minutes, then lower the temperature to 85°C, and add 0.2wt.% Tween80 With 0.2wt.% of SPAN80, the emulsion was ultrasonically oscillated for 100 seconds and emulsified with a high-shear homogeneous emulsifier for 0.5 hours (stirring speed was 30000r / min), and finally 55.6wt.% solvent was gradually added dropwise to form a thick The emulsion is the stock solution of release agent for high-resilience polyurethane foam products compounded with palm wax and silicone resin. It can be sprayed directly after adding 40.0wt.% n-heptane at room temperature.

[0025] Emulsion stability: After being centrifuged at 3000r / min for 5 minutes, the release agent emulsion prepared by this formula will not be demulsified or delaminated.

[0026] Release effect: heat up the polyurethane foam mold to 70°C, spray the release agent evenly on the surface, and...

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Abstract

The invention relates to a release agent and discloses a palm wax-silicon resin compound high-resilience polyurethane foaming product release agent. The release agent is prepared from palm wax and silicon resin through compounding. In the invention, the palm wax is first introduced into the high resilience polyurethane release agent, and the compound polyurethane release agent has the release effect reaching to level 1 on the high resilience polyurethane product in a mold of casting aluminum, has release frequency of 12 or more, can effectively improve the traditional high resilience polyurethane release agent-caused cell uneven phenomenon and reduce the defect rate, is prepared through simple processes easy to control, and meets release agent use requirements of the complex high-resilience polyurethane products.

Description

technical field [0001] The invention relates to a release agent, in particular to a release agent for high-resilience polyurethane foam products compounded with palm wax and silicone resin. Background technique [0002] High resilience polyurethane is a flexible foam with excellent performance. In addition to the advantages of ordinary soft foam, such as light weight, softness, high specific strength, and good heat insulation, it also has higher resilience, a feel similar to latex foam, and high comfort, so it is widely used in automobiles, furniture and other industries. In the polyurethane foam molding process, a mold release agent is required to prevent the adhesion between the polyurethane foam and the mold. Therefore, it is of great practical significance to develop a new type of liquid release agent that has good demoulding effect, is not easy to remain on the surface of the mold, is environmentally friendly, safe, and can make the surface of the foam product have an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/64
CPCB29C33/64
Inventor 张羽王若兵马驰赵常礼闫丽玲孙明月
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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