Send Message
Xiamen Juguangli Import & Export Co., Ltd
products
news
Home > news >
Company News About The low hardness of silicone products leads to the cause of product damage.
Events
Contacts
Contacts: Mr. Derek.Cheng
Fax: 86-592-5536328
Contact Now
Mail Us

The low hardness of silicone products leads to the cause of product damage.

2024-10-25
Latest company news about The low hardness of silicone products leads to the cause of product damage.

The Angle cracking and mold bonding cracking of silicone rubber products seriously trouble the bad phenomenon of products, and the edge cracking phenomenon of products has become the normal in the plate vulcanization process. For this reason, many silicone gifts are prone to edge cracking under the conditions of low hardness, circular arc shape and cylindrical shape. So edge Xiao summarized several causes of edge cracking of silicone rubber products and their solutions!

The main reason for the edge explosion is that the silicone rubber gift has a certain arc in the case of low hardness, and there is a certain gap in the middle and inside of the mold when the upper and lower die, which may cause the product to explode. The most common products are circular low-hardness products, so the main reason for this is the error of mold accuracy, CNC correction and tool compensation during mold processing.


The fluidity of the raw material is too poor, the nature of the raw material is low hardness, so there will be errors in adding silicone and vinyl silicone oil. Combined with the time temperature and pressure adjustment of the machine itself, the edge of the product bursts and can be adjusted from the machine! The curing speed is not stable, and when the temperature of the machine and the mold is increased or decreased, the product often appears the phenomenon of bursting and bulging. However, when the temperature and time of the machine are adjusted, a cycle is often formed, and the product explosion cannot be permanently solved!

 

Solution: The gap between the upper and lower molds can be minimized in the mold processing process, and the normal vulcanization production can be maintained by the silicone rubber products manufacturer in the processing process. In the mixing process, the mixing degree of raw materials and vulcanization should be increased, and the raw materials should be mixed evenly as far as possible. In the process of production and processing, to control the weight and placement of the product, the machine temperature should be reduced when the edge is exploded until the product does not crack. However, here, the best way to control the explosive phenomenon in silicone gifts is to maintain the normal operation of the machine, and to keep the product normal and stable in and out of the mold!


If the curing time is too long or too short, the product may appear. People who understand the production of silicone know that if the low hardness of silicone rubber products are not controlled well when forming, the edge will crack, which is commonly known as the edge of silicone rubber products. Why low hardness silicone rubber products will have a burst edge? How to deal with the edge of the explosion? Edge Xiao on how to solve the problem of silicone rubber products edge explosion for everyone to sort out and share a few points.

 

Silicone rubber products
The rubber with low hardness (about 30 degrees) is prone to defects such as bubbles during the molding process. If it is the color of the silicone body or the color of the translucent, it is easy to see a lot of white spots on the silicone rubber products. Solution: Increase the temperature of the mold and appropriately increase the temperature of the molding mold. Second, increase the mold temperature, the defects of bubbles and white spots are solved, but the edge of the silicone product begins to crack, that is to say, there is a burst edge. This creates an infinite loop. When the mold temperature increases, the edge will burst, and when the mold temperature decreases, there will be air retention (bubbles) and bad white spots. Solution sheet
Reduce the mold temperature of the molding, and extend the curing time if there is bad air retention (bubbles) and white spots. The molding temperature must be greatly reduced until the silicone rubber product does not explode. Don't think that dropping the mold temperature by four or five degrees can solve the problem.
Exhaust stroke and frequency must be well controlled, exhaust frequency as small as possible. If possible, exhaust travel should be as short as possible.
The amount of vulcanizing agent added can be appropriately reduced.
For the low-hardness tridacnID product, there are many factors that cause edge explosion, and some exceptional factors will also cause edge explosion, such as: poor weight control of rubber (too heavy will cause edge explosion, too light will cause lack of material and corners, so control at a reasonable weight will reduce the probability of edge explosion). Secondly, in the long-term production process, it is necessary to properly reduce the mold temperature, so that the mold is kept within a certain temperature range (in the absence of intermittent, the mold temperature should be kept within a certain range). The production process of silicone rubber products is a complex production process, and there are many unused solutions to various problems. For more solutions, please refer to the professional explanation of Dibotridna Rubber Products manufacturer!