The performance of HTV silicone rubber is highly dependent on formula design and process control. The following are technical optimization directions and application examples in its production:


1. Formula innovation
High temperature resistant type: introduce phenyl siloxane chain segments (low phenyl silicone rubber glass transition temperature -115℃) or silicon boron chain segments (resistant to 400℃ high temperature), used for aerospace sealing materials.


Conductive/flame retardant type: add conductive carbon black or aluminum hydroxide, used for electronic buttons and fireproof parts respectively110.


Biocompatible type: use high-purity raw materials and non-toxic vulcanizers to meet medical implant standards1.


2. Process improvement
Liquid silicone rubber (LSR) injection molding: using vinyl silicone oil as the base glue, combined with platinum catalyst to achieve rapid vulcanization, suitable for complex precision parts (such as nipples, catheters).


Continuous vulcanization technology: improve cable production efficiency and reduce energy consumption through microwave or radiation vulcanization.


3. Industrial application cases
New energy vehicle seals: High phenyl silicone rubber and fluorosilicone rubber are blended to resist long-term thermal aging and oil corrosion of high-voltage charging interfaces.


Power insulators: HTV rubber reinforced with fumed silica is coated on the surface of glass cloth through a coating process, and its arc resistance is better than that of traditional rubber.


4. Environmental protection and cost control
In recent years, process trends include the use of recycled silica powder (to reduce raw material costs) and the development of solvent-free glue (to reduce VOC emissions).