Unverified82% confidenceFactTime unknown
判断硅胶纯度可用'白痕测试'：用力拉扯或扭折模具，出现白色折痕说明填充了碳酸钙等杂质，纯硅胶扭折后不变色
1
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82%
Confidence
Long-term
Relevance
-
First Seen
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Unverified食品级铂金硅胶通过拉伸测试不发白、无异味，普通硅胶折叠处会泛白，选购硅胶蒸格可通过对折检验判断材质等级87% similarUnverified食品级硅胶经拉扯测试真伪：撕拉后不变色、按压回弹快为纯硅胶；碳酸钙掺假品拉伸处会发白，可作为现场简易辨别方法86% similarUnverified判断硅胶是否含填充料：将配件反复弯折，若折痕处出现白色/发白则含较多工业填充料，纯硅胶弯折不变色，纯硅胶更耐用且无有害物迁移风险86% similarUnverified铂金硅胶模具通过弯折测试可辨真伪：反复对折折痕处不出现白色印记（发白说明填充料多、非纯铂金硅胶）86% similarUnverified食品级硅胶做'白纸测试'：反复弯折拉伸不出现白色痕迹说明纯度高，出现白痕（返白）说明掺了填充料，长期高温接触食物有风险86% similar
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