We have a lot of soft products such as cushions and non-slip covers, which are generally made of sponge material, but the raw materials of sponges are toxic, and there are too many voids in the sponge, which are easy to breed bacteria and mites, and are made into daily necessities, and long-term contact with the human body will endanger health. In order to solve this problem, many businesses have begun to use foamed silicone instead of sponge to make products.
Foamed silicone is a polymer compound with excellent heat resistance, cold resistance, corrosion resistance, high elasticity and waterproof properties. Foamed silicone productsIt is an important industrial material with good physical properties and application prospects.
Foamed silica gel, also known as addition molding silica gel, is made of silicone rubber as the base material, adding foaming agent, vulcanizing machine and other auxiliary agents, and heating vulcanization under pressure to make the rubber expand to form a sponge-like bubble structure.
The production process of silica gel foaming is complex and needs to go through a series of technological processes, mixing, degassing, foaming, curing, each link needs to be strictly controlled, and different stages of the process will have an impact on the finished product of silica gel foaming.
How much is a meter of foam seals.
Foamed silicone productsIt is a non-toxic, tasteless, safe and hygienic environmentally friendly material.
1.High elasticity: Silicone foam products have good elasticity and resilience, which can effectively absorb shock and sound insulation.
2.High temperature resistance: Silicone foam products can withstand high temperatures, and will not be deformed and aged when used in a high-temperature environment for a long time.
3.Corrosion resistance: Silicone foam products are not susceptible to the erosion and corrosion of chemicals, and have good corrosion resistance.
4.Waterproof: Silicone foam products can effectively waterproof and protect the safety and stability of equipment and products.
5.Thermal insulation: The thermal conductivity of silica gel hair cannon products is low, which can effectively reduce the loss of energy alternation.
With the continuous development and updating of foaming technology and the superior characteristics of its materials, the application fields are becoming more and more extensive, such as sealing strips, cushions, construction gaskets, vibration isolation materials, protective equipment and so on.
Foamed silicone productsAccording to the structure, specification, length, size, shape, hardness, color of the required finished product, as well as the special needs of the drawing, non-standard personalized customization can be carried out.
The processing and molding methods of silicone foam products include extrusion molding, compression molding, injection molding, etc.
1.Extrusion: The shape of the product is extruded by the machine, long or tubular shape, and the shape is set by high temperature. The representative products are: foamed silicone tube, foamed silicone sealing strip, post-processing can be cutting, bonding, weaving, oil spraying, laser carving, silk screen printing and so on.
2.Compression molding: Silicone mold is required to be made, the rubber is shaped through the mold and then vulcanized at high temperature, the machine applies a certain pressure, and the product can be basically formed after a few minutes. Representative products: silicone buttons, silicone sleeves, foam rings, irregular and shapeless products.
3.Injection molding: It is a hot vulcanization process that injects the rubber into the mold, melts the silica gel in the mold after being heated first, and then shapes the rubber through mechanical pressure. Its products are very flexible, comfortable and very suitable for mid-to-high-end products, especially in contact with the human body, representative products: feeding bottles, nipples, kitchen utensils.