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[Chemical Knowledge]：The production method and process of flexible foam polyether.

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The manufacturing method
of soft foam polyether
1. Introduction

soft foam polyether is a kind of chemical production raw material widely used in furniture, car seats, mattresses and other fields. With the increasing market demand, it is of great significance to study the manufacturing method of flexible foam polyether for improving production efficiency, reducing costs and improving product quality. This paper will introduce the manufacturing method of flexible foam polyether in detail, including raw material preparation, polymerization reaction, post-treatment and other processes.

2. raw materials to prepare

1. polyol: polyol is the main raw material of flexible foam polyether, commonly used polyols, glycerol and so on.
2. catalyst: catalyst for promoting the polymerization reaction, commonly used are stannous octoate, dibutyl tin dilaurate, etc.
3. foaming agent: foaming agent is used to produce bubbles, commonly used in water, carbon dioxide and so on.
4. Surfactant: Surfactant is used to adjust the surface tension, and silicone oil is commonly used.

3. polymerization reaction

1. premixing: polyol, catalyst, foaming agent, surfactant and other raw materials according to a certain proportion into the premixed kettle, stirring evenly.
2. Polymerization: The pre-mixture is transferred to a polymerization kettle and heated to a certain temperature for polymerization. It is necessary to control the reaction speed and temperature during the polymerization reaction to ensure the molecular weight and distribution of the product.
3. Degassing: After the polymerization reaction is completed, degassing treatment is required to remove bubbles and by-products in the system.

4. Post-Treatment

1. Cooling: The degassed polymer needs to be cooled to room temperature.
2. Cutting: According to product requirements, cut the polymer into blocks or granules of a certain length and width.
3. Packaging: packaging the cut products and putting them into storage for use.
Precautions for
5.

1. Strictly control the quality and proportion of raw materials to ensure product quality and performance.
2. During the polymerization reaction, it is necessary to pay close attention to the reaction speed and temperature, and adjust the process parameters in time to prevent the occurrence of side reactions.
3. During the post-processing process, attention should be paid to the details of the product such as cooling, cutting and packaging to ensure the quality and appearance of the product.

6. conclusion The manufacturing method of

flexible polyether includes raw material preparation, polymerization reaction and post-treatment, and the polymerization reaction is the key link. By strictly controlling the process parameters and the quality of raw materials, we can produce high-quality, high-performance flexible foam polyether products to meet market demand.

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