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[Chemical Knowledge]：The production method and process of the sealant.

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Manufacturing Method
of Sealants
1. Introduction

In the field of chemical production raw materials, sealants play a key role in preventing fluid or gas leakage. This article will introduce the manufacturing method of the sealant in detail, including the required raw materials, process steps and precautions.

2. raw materials and formula

1. Base polymer: usually choose high molecular weight polymer as the basis, such as polyurethane, silicone rubber, acrylate and so on.
2. filler: such as calcium carbonate, talc, silica, etc., used to improve the strength and hardness of the sealant.
3. Plasticizer: such as phthalate, dioctyl sebacate, etc., used to increase the flexibility of the sealant.
4. Catalyst: such as organic tin compounds, amines, etc., used to promote the curing of the sealant.
5. Other additives: such as antioxidants, fungicides, etc., used to improve the durability of the sealant.

3. Manufacturing Steps

1. Ingredients: According to the predetermined formula, the various raw materials are accurately weighed and added to the high-speed mixer.
2. Mixing: In a high-speed mixer, the raw materials are fully stirred to form a uniform mixture.
3. Extrusion: The mixture is passed through the extruder head to form the desired shape and size of the sealant.
4. Vulcanization: Place the extruded sealant in a constant temperature and humidity environment to vulcanize and cure it.
5. Inspection and packaging: quality inspection of vulcanized sealants, qualified for packaging.
Precautions for
4.

1. Strictly control the quality of raw materials to ensure the purity and stability of raw materials.
2. During the mixing process, it is necessary to maintain an appropriate temperature and stirring speed to prevent gel or agglomeration.
3. When extrusion molding, the appropriate head and process parameters should be selected according to the product requirements.
4. During the vulcanization process, a constant temperature and humidity should be maintained to ensure that the sealant is fully cured.
5. In the entire manufacturing process, pay attention to safety production and environmental protection requirements to avoid environmental pollution.

5. Conclusion The manufacturing method of

sealant involves many links and process parameters, and it is necessary to strictly control the quality of raw materials, mixing process, extrusion molding and vulcanization. By optimizing the formulation and process parameters, we can produce sealant products with excellent performance and stable quality to meet the needs of chemical production raw materials. At the same time, pay attention to safety production and environmental protection requirements during the manufacturing process to ensure the sustainability and environmental protection of products. With the continuous development of science and technology, the manufacturing method of sealant will be continuously improved and optimized, which will provide strong support for the development of chemical production raw materials.

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