Weekly topic: 5 Wealth points for correct answers, 2 Wealth points for participation； Question 208
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This post was last edited by ljtjbx on 2015-11-5 at 17:40. Fill in the blanks: Polypropylene tends to oxidize and degrade when heated; it is particularly sensitive to oxygen at high temperatures. To prevent ( ) during processing, ( ) is generally added during the resin synthesis. Answer: Thermal degradation, antioxidants —————————————————— Please note: We will close this thread after 24 hours, and at that time we will announce the best response (the most helpful one), along with the answer and explanation. Attraction Reward: Those who post a topic in this section within two days to provide a detailed explanation or discussion on the knowledge points related to this question are asked to reply/comment in this post to inform us, and we will have a moderator grant them +Attraction. It is not allowed to simply copy and paste; original content is preferred, with at least some organization by the user along with personal insights.
Polypropylene tends to oxidize and degrade when heated; it is particularly sensitive to oxygen at high temperatures. To prevent such (thermal degradation) during processing, (antioxidants) are generally added during the resin synthesis stage
Oxidation, cooling. . . . . . . . . . . . . . . . . .
Polypropylene tends to oxidize and degrade when heated, and it is particularly sensitive to oxygen at high temperatures. To prevent thermal degradation during processing, antioxidants are generally added during the resin synthesis.
First blank: Thermal degradation; Second blank: Antioxidant
Polypropylene tends to oxidize and degrade when heated, and it is particularly sensitive to oxygen at high temperatures. To prevent thermal degradation during processing, antioxidants are generally added during the resin synthesis.
Oxidative degradation----Antioxidants------------------------
Polypropylene tends to oxidize and degrade when heated, and it is particularly sensitive to oxygen at high temperatures. To prevent thermal degradation during processing, antioxidants are generally added during the resin synthesis stage.
Polypropylene tends to oxidize and degrade when heated, and it is particularly sensitive to oxygen at high temperatures. To prevent thermal degradation during processing, antioxidants are generally added during the resin synthesis.