With the development of society in recent years, civil compound rubber has driven the technology and progress of major industries in China. Compound silicone rubber products have become one of the important raw materials and become an indispensable environmentally friendly gum product in various major industries. However, the compounded rubber material only belongs to the semi-finished product of the product. The quality of the compounded rubber material directly affects the quality of the finished product in the subsequent process. Therefore, the quality of the product in the compounding process depends on the method of compounding rubber, so today Bring everyone to know the knowledge of mixed rubber!

 

 

工艺 Mixed rubber production process:

 

1. Adjusting the wheelbase: The first step in rubber mixing is to adjust the wheelbase of the rubber mixer to a high distance. Since the solid rubber raw material just put in is a block, the thickness of the roller needs to be increased to 10mm. The above guarantees that the silica gel material can be dispersed. When the material is dispersed in the early stage, the wheelbase is gradually reduced when the material is dispersed after the material is dispersed. can

 

 

 

2. Material refining: The material refining process is a relatively important process. During the processing, a roll of material needs to be repeatedly mixed for about 20 to 30 minutes before the material can be completely mixed uniformly to ensure that the subsequent production and processing of silicone products Material marks and quality problems, and the more important one is the control problem in the operation process. Due to the limitation of the width of the mixer, a good arm and delicate technology are required to produce a good roll of material.

 

 

3. Add colorant and vulcanizing agent: When the material is evenly mixed, add vulcanizing agent and colorant, and add them in accordance with the weight ratio of the material, otherwise the material may appear color difference and vulcanization, both can be added at the same time. However, when adding a vulcanizing agent, it is necessary to control its reel. It cannot be completely wrapped in the middle of the rubber, otherwise static electricity or even open flames will appear. In addition, many customers will add some quantum points or other substances to the silica gel products, which have different powders. As well as watery and creamy.

 

 

 

4. Roll-out: Roll-out is also the most important step for manufacturers of silicone products. The material that rolls out of the product is related to the subsequent proportion of the glue cut and the weight of the produced product. The weight of the rubber material is not light, so it must be collected all at once during the rewinding process. If the operator's insufficient hand force causes the material to shift or fall during the rewinding process, you must start again from the beginning and rewind the adhesive. Paper is also unusable.

 

 

注意 Notes on refining rubber:

 

 

 

1. The mixing time is not easy to be too long. When the mixing is uniformly dispersed, the silicone material is completely wrapped by the roller, and the surface is smooth, the mixing can be completed. Too long will stick to the roller. The mixing time is particularly short and cooling should be increased to keep the roller temperature low.

 

 

 

2. It is necessary to prevent the temperature of the machine in the mixing process, and confirm whether the machine needs to turn on cooling water according to the actual indoor temperature or season, so as not to cause the roller to be hot. Generally, those who are more mature in technology know that during the rubber mixing process The machine becomes hot with the extrusion of the silica gel raw material, and the cooling water is used for the rubber of different hardness. On the other hand, the rubber mixing workshop without air conditioner may cause the machine to heat up, and the rubber will be soft. , Non-fusion and other phenomena!

 

 

3. The rubber material must be mixed uniformly. The subsequent silica gel products will not have string color material marks, etc. During the roller mixing process, if the color rubber and vulcanization are still sticking to the roller, then it is proved that the material has not yet been mixed. Completely dispersed, because the distance between the two rollers will automatically increase with the hardness of the rubber, so the distance between the rollers must be locked during the unwinding process