Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 197
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Multiple-choice: The polymer with a glass transition temperature Tg lower than room temperature is ( ). A. Plastic ； B. Rubber C. Coal tar ； D. Petroleum asphalt —————————————————— Please note: We will close this thread after 24 hours, and at that time we will announce the best response (the best help), as well as 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/comments 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.
The polymer with a glass transition temperature Tg lower than room temperature is (B). A. Plastic ； B. Rubber C. Coal tar ； D. Petroleum asphalt
Multiple choice: The polymer whose glass transition temperature Tg is lower than room temperature is (B. Rubber). A. Plastic ； B. Rubber C. Coal tar ； D. Petroleum asphalt
B rubber~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The polymer with a glass transition temperature Tg lower than room temperature is (B).
Multiple choice: The polymer whose glass transition temperature Tg is lower than room temperature is (B. Rubber). A. Plastic ； B. Rubber C. Coal tar ； D. Petroleum asphalt
B, Rubber – – – – – – – – – – – – – – – – – – – – – – – – –
B. Rubber...........................