Manufacturing Methods of Composite Adhesives
I. Introduction
Composite adhesives play an important role in the production of chemicals and are widely used in many fields due to their unique physical and chemical properties. In this paper, the manufacturing method of composite adhesive will be introduced in detail, including raw material selection, proportioning, mixing, processing and other aspects, in order to provide readers with useful references.
II. Selection of raw materials
1. Base rubber: choose the base rubber with high viscosity, high elasticity, excellent aging resistance, such as natural rubber, synthetic rubber, etc..
2. Fillers: carbon black, silica, silicate, etc. can be chosen as fillers to improve the strength and hardness of composite rubber.
3. Plasticizer: Choose low molecular weight plasticizer, such as paraffin oil, naphthenic oil, etc., to reduce the viscosity of composite rubber and improve its processing performance.
4. Sulfurizing agent: choose appropriate sulfurizing agent, such as sulfur, peroxide, etc., to regulate the vulcanization speed of composite rubber.
3. Proportioning design
According to the performance requirements of the required composite rubber, the proportion of each raw material is determined through test and theoretical analysis. Generally speaking, the proportion of base rubber is relatively large, the proportion of filler and plasticizer is moderate, and the proportion of vulcanizing agent is relatively small.
Four, mixing process
will be selected in accordance with the designed ratio of raw materials into the mixer or opener, for mixing. During the mixing process, the temperature and time should be controlled to ensure that the raw materials are fully and evenly mixed together. V. Processing and molding
The mixed composite rubber is put into the extruder or calender to be processed into the required shape and size. Processing process needs to control the temperature, pressure and speed and other parameters, in order to ensure product quality. Sixth, vulcanization
will be processed after the molding of the composite rubber products into the vulcanizing tank or hot air vulcanization, so that the rubber molecules in the composite rubber cross-linking reaction occurs, so as to improve the physical and mechanical properties of the product and chemical stability. The vulcanization process needs to control the temperature, time and pressure and other parameters to ensure that the vulcanization effect.
VII、Quality inspection
The quality inspection is carried out on the vulcanized composite rubber products, including appearance inspection, physical and mechanical property test, chemical property analysis, etc., to ensure that the products meet the relevant standards and requirements.
VIII、Packaging and storage
Package the products with qualified inspection to prevent the products from being contaminated and damaged in the process of storage and transportation. Packaging materials should be selected from environmentally friendly, non-toxic materials, and have a certain anti-aging properties. Storage should avoid direct sunlight, high temperature and humid environment, so as not to affect product quality.
IX. Precautions in the production process
1. Strictly control the quality of raw materials to ensure that the raw materials meet the relevant standards and requirements.
2. The mixing process should ensure that the raw materials are fully and evenly mixed together to avoid uneven phenomenon.
3. Parameters such as temperature, pressure and speed should be controlled during processing and molding to avoid bubbles, cracks and other defects in the products.
4. Parameters such as temperature, time and pressure should be controlled during vulcanization to ensure the vulcanization effect.
5. Equipment should be kept clean and hygienic during the production process, and regular inspection and maintenance should be carried out to ensure the normal operation of the equipment.
X. Conclusion
The manufacturing method of composite rubber involves a number of links and factors, which need to strictly control the quality of raw materials, ratio design, mixing process, processing and molding, vulcanization treatment and other aspects to ensure product quality. At the same time, the production process also needs to pay attention to equipment maintenance and cleanliness and hygiene to improve production efficiency and product quality.
