The problem of aging of silicone seals Right and wrong are often important. At the same time, the aging problem is a key factor that affects the sealing performance of the sealing strip. The details of the oil-resistant rubber strip
s. The second is that the vulcanizing agent functions are divided into ordinary type and yellow resistance. Its use boundary has the following two aspects: (1) Ordinary non-yellowing vulcanizing agent, used in some non-exposed silicone seals that can be used for deep color contrast or low color requirements. (2) Anti-yellowing vulcanizing agent is used for products that require exposure, lighter and brighter colors, and higher color requirements. It is resistant to high temperature, low temperature, and aging, and can be successfully used in some scenes that other rubber sealing strips cannot use. The rest is non-toxic and harmless, and has quite good psychological inertia and resistance to psychological aging. Therefore, it may be used in ordinary industries such as medical food, beauty, doors and windows. Polyurethane silicone seals focus on several functions: 1. Breaking strength (breaking force/cross-sectional area) 2. Bonding strength (stretching force/bonding area, except for substrate damage) 1. Non-toxic, non-toxic Odor, high transparency, no yellowing; 2. Soft, good elasticity, resistance to kinks and fixed shape; 3. No cracking, long service life, cold and high temperature resistance.
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