What comes to mind when you think of silicone? (b)
Hits: 310
img
Speaking of silicone we may not be very familiar with, look at these things in life, you will find that silicone is everywhere.
The following six techniques of silica gel products are introduced:
4. The calender
Silicone rubber is kneaded and mixed with silica black and silicone oil to make a mixed rubber and then calendered. By calendering the film, the longitudinal and transverse physical and mechanical properties have obvious difference, this phenomenon is calendering effect. Specifically, the longitudinal tensile strength of the film is greater than the transverse, the transverse elongation of the film is greater than the longitudinal, the longitudinal shrinkage of the film is greater than the transverse.
Calendering effect is the result of the orientation of macromolecules and needlelike and lamellar complexes along the calendering direction during calendering. The calendering effect is related to the composition of the binder, calendering temperature, speed and speed ratio. For larger products, such as silica gel sheet, silica gel plate.
5. Perfusion
Method of irrigation mode or perfusion mode of operation: filling mould or filling mould, is used to compare smooth or simple products, no save work line to save time, is you want to copy product or model, with plastic board or glass plate that will be a vacuum of silica gel directly into the products above, after being dry silica gel forming, take out the products, mould is molding (note: The perfusion mold is generally made of soft silica gel, so that it is easier to release and will not damage the products inside the silica gel mold). It belongs to the combination of solid and liquid, using products such as mobile phone cases, luggage cases, etc.
6. Coating
Rapid vulcanization; Strong adhesion; Good fluidity and easy defoaming. Platinum complex catalyzed, non-toxic, no odor; Excellent thermal stability and cold resistance (use temperature -60β ~ 200β) after forming with good air permeability, heat resistance, and a certain tensile strength; Excellent skid resistance; No pollution; Low hardness. The planting adhesive binds firmly.
