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[Chemical Knowledge]：Manufacturing method and process of high resilience foam

Read： 531 Time：13months ago Source：Transform the World with Simplicity

The manufacturing method
of high resilience foam
in the field of chemical production raw materials, high resilience foam is a widely used product, because of its excellent elasticity, durability and comfort. This paper will introduce the manufacturing method of high resilience foam in detail, including raw material selection, formula design, production process and quality control.

1. raw material selection

1. polyol: polyol is the main raw material of high resilience foam, commonly used polyols, polyester polyols and so on. Choosing the right polyol is critical to improving the resilience, toughness and durability of the foam.
2. foaming agent: foaming agent is used to produce bubbles of raw materials, commonly used foaming agent has water, physical foaming agent and so on. Choosing a suitable foaming agent can control the pore size and density of the foam and improve the resilience of the foam.
3. catalyst: the catalyst is used to adjust the foaming and gel speed of the foam. The commonly used catalysts are amine catalysts, tin catalysts, etc. The choice of suitable catalyst can make the foam have good fluidity and stability.

2. formulation design

high resilience foam formulation design needs to consider the performance of raw materials, proportion and the impact on foam performance. The following is a typical formula design case:

1. Polyol: 50 parts of
2. Foaming agent: 10 parts of
3. Catalyst: 1 part of
4. Flame retardant: appropriate amount of
5. Other additives: appropriate amount of

3. Production process
The production process of
high resilience foam mainly includes mixing, foaming, gelling, aging and other steps. The following is a typical production process:

1. Polyols, foaming agents, catalysts and other additives are added to the mixer in proportion and stirred evenly.
2. Pour the mixture into a foaming machine and beat the mixture into foam by high pressure air.
3. Pour the foam into the mold and let it gel and mature naturally.
4. After the curing is completed, the foam is removed from the mold for post-processing, such as cutting, polishing, etc.

4. quality control

In order to ensure the quality of high resilience foam, strict quality control is required, including appearance quality, resilience, compression set, hardness and other aspects of the test. The following is a typical quality control process:

1. Appearance quality: Check whether the surface of the foam is flat and smooth, with or without bubbles, cracks and other defects.
2. Resilience: Detect the resilience of the foam through professional testing equipment to ensure that it has good elastic properties.
3. Compression set: Detect the recovery ability of the foam after a certain proportion of compression, reflecting its durability.
4. Hardness: The hardness of the foam is tested by a hardness tester to ensure that it meets the requirements for use.

In short, the manufacturing method of high resilience foam needs to comprehensively consider raw material selection, formula design, production process and quality control to ensure product quality and performance. In the actual production process, it is also necessary to adjust and optimize according to specific needs and conditions to continuously improve production efficiency and quality.

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