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Which of the below glue can be made plastic again by re-heating?(a) Thermo-setting(b) Rubber glue(c) Animal protein glue(d) Thermo-plasticThe question was posed to me during an online exam.The doubt is from Adhesives topic in division Materials for Construction of Basic Civil Engineering |
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Answer» CORRECT choice is (d) Thermo-PLASTIC To explain: GLUE from synthetic resins can be EITHER thermo-setting or thermo-plastic.The thermo-setting one is permanent in nature. Thermo-plastic glue can be reheated and made plastic again. |
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