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[Chemical Knowledge]：The production and manufacturing method and process of natural rubber raw materials.

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The manufacturing method
of natural rubber raw materials
1. Introduction

Natural rubber is an important raw material in the production of chemical products and is widely used in the production of rubber products such as tires, hoses, tapes, rubber shoes, etc. In order to improve the quality and production efficiency of natural rubber, it is of great significance to study its manufacturing methods. This article will introduce the manufacturing method of natural rubber, including latex preparation, coagulation, dehydration, drying and other processes.

2. Method of Making Natural Rubber

1. Latex Preparation

The production of natural rubber begins first with latex preparation. Latex is a Milky White liquid cut from rubber trees, the main component is cis-1, 4-polyisoprene. In the process of latex preparation, it is necessary to pay attention to control factors such as tapping time, tapping depth and latex concentration to ensure the quality of latex.

2. Coagulation
The
latex is coagulated to coagulate the rubber particles into a solid. There are a variety of solidification methods, commonly used acid solidification method and salt solidification method. In the acid coagulation method, rubber particles are coagulated by adding an acidic coagulant to the latex to lower the pH of the latex. Salt coagulation law is to add salt coagulant, so that the electrolyte concentration in the latex, coagulate rubber particles.

3. Dehydration

After solidification, the rubber material contains a lot of water and needs to be dehydrated. Dehydration can be used by pressing, centrifugal and other methods to remove the water in the rubber. During the dehydration process, attention should be paid to controlling the temperature and time to avoid the deterioration of the rubber material.

4. Drying
The rubber material after
dehydration still needs to be further dried to reduce its moisture content and improve product quality. Drying can use oven, hot air drying and other equipment, need to pay attention to control temperature, wind speed and drying time and other factors, to avoid overheating or incomplete drying of the rubber.
Precautions in the manufacturing process of
3.

1. Quality control

In the manufacturing process of natural rubber, it is necessary to strictly control the quality of each process to ensure that the product quality meets relevant standards. For example, in the latex preparation process, it is necessary to regularly detect the solid content of the latex, pH value and other indicators; in the coagulation and dehydration process, it is necessary to control the coagulant and dehydrating agent dosage and temperature and other parameters.

2. Environmental protection
The production process of
natural rubber will produce certain pollutants such as waste water, waste gas and waste residue. These pollutants need to be properly treated to protect the environment and ecological balance. For example, the waste water can be treated by biological treatment, chemical treatment, etc., and the exhaust gas can be purified by dust removal equipment.

3. Energy saving

In order to improve the production efficiency of natural rubber and reduce production costs, it is necessary to take measures to save energy and reduce consumption. For example, new solidification and dehydration technologies can be used to reduce energy consumption and wastewater discharge; automated production lines can be used to improve production efficiency and product quality.

4. Conclusion The manufacturing method of

natural rubber includes latex preparation, coagulation, dehydration and drying. It is necessary to strictly control the quality and environmental factors of each process to ensure product quality and production efficiency. At the same time, it is necessary to strengthen technical research and development to promote the green and intelligent development of natural rubber manufacturing industry.

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