The melting point of polypropylene is very high compared to many other plastics, at 320°F (160°C), which means that the hot water used when washing dishes will not cause dishware made from this plastic to warp. This contrasts withpolyethylene, another popular plastic for containers, which ...
Safety Features: Free from BPA, phthalates, lead (heavy metal), PVC (polyvinyl chloride), latex, BPS (bisphenol-S), and PET (polyethylene terephthalate) Special Features: 2-in-1 bottle and formula dispenser Compartments: One compartment per bottle Stackability: Not stackable, but the formula...
Polyethylene is used in plastic bags and wraps. 6 Thermoset Not recyclable, but highly durable. Urea-formaldehyde foam insulation in construction. 4 Thermoplastic A thermoplastic, or thermosoftening plastic, is a plastic polymer material that becomes pliable or moldable at a certain elevated temperature...
PULLULAN is a colorless, odorless, neutral, linear polymer material, which is easy to absorb water and expansion and dissolves unlimitedly in water. The dissolving speed is more than twice as fast as sodium alginate and polyethylene. Its solution is not ionized, geltized, and does not crystalli...
The VIM process uses modern induction furnaces to melt metals. The high power installed in the device allows the full charge of the crucible to be melted quickly, minimizing the exposure of the liquid metal to oxygen from the air. Thus, it provides better control over the chemical composition...
Table 1-4 gives the solubility of kapok fiber in different acidic and alkaline solvents at a certain temperatwre for a given time. As shown in Table 1-4, kapok fiber does not 耐酸碱性:木棉纤维具有良 好的耐酸碱性,在一定温度时, 木棉纤维在不同酸性和碱性溶剂 中一定时间后的溶解性见表 1-...