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May 15, 2020
· Silicone Rubber + Oil
· Emulsified Silicone Oil
· Semi-Permanent Aqueous Bladder Coating Agent Inside Tire Paint Agent
· Effcient Tire Inside Release Agent
The bladder coating agents used in the curing process in the domestic tire manufacturers are different. Normally emulsified silicone oil are used for the curing of bias ply tires, half-permanent bladdercoating agents, which are generally imported or made by foreign-captital enterprises, are mostly used for the curing of radial tires. The SBC series bladder coating agent made by Qingdao Fihonor Chemical Science&Technology Co., Ltd is a kind of half-permanent reactive silicone bladder coating agent, the main differences between the SBC bladder coating agent and emulsified silicone oil are as follows.
| Term | SBC series Bladder Coating Agents | Emulsified silicone oil |
| Main composition | Emulsion of Si-O-C reactive silicone polymer | Emulsion of deactivate silicone oil |
| Status under high Temperature | Polymerizes to form macromolecules film | No any change |
| Status on the surface of bladder | Continuously build a white thin film, protect and extent the service life of bladder | Oily status, contaminate the bladder and shorten the service life of bladder |
| Appearance of inside of tire after vulcanization | The inside of the tire is clean, smooth and dry. | Rubber shortage after vulcanization greasy surface inside tire |
| Consequence whenthe mould is cont-aminated by applying | Form white dry spots on the moulds, no negative effects to the tires | Greasy and dirty |
| The number of release after one coating | High release times, and will increase after being used for some time. | Normally low release times, seldom to reach 8 times |
| Effect to tire inner liner splice | Form dry film at high temperature, can protect the inner liner splice. | Easy to infiltrate into the inner liner splice, cause cracking |
| Effect to tire corner | Will not cause edge in chamfers | Easy to cause edge in chamfers |
| Performance/cost ratio | Higher unit price, higher performance/cost ratio | Lower unit price,lower performance/ cost ratio |
From the contrast above, it is clear that using SBC series as bladder coating agents to replace emulsified silicone oil is an inevitable trend for the domestic tire manufacturers to improve the quality and appearance of the tire.
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