TPU的合成方法按有無(wú)溶劑可分為兩類: 無(wú)溶劑的本體聚合法和有溶劑的溶液聚合法。本體聚合按反應(yīng)步驟又可分為一步法和預(yù)聚體法。一步法是將低聚物二元醇、二異氰酸酷和擴(kuò)鏈劑同時(shí)混合生成。一步法工藝簡(jiǎn)單, 操作方便, 但其反應(yīng)熱難以排除, 易產(chǎn)生副反應(yīng)。用一步法合成了聚酯型熱塑性聚氨酯彈性體, 首先在反應(yīng)器中稱取配方量的聚酯多元醇和擴(kuò)鏈劑, 丁二醇, 升溫至120℃真空脫水。迅速加入已預(yù)熱的快速攪拌均勻, 倒入已預(yù)熱的容器中, 于120℃真空焙烘,再降溫至100℃烘得淺黃色半透明聚氨酯產(chǎn)物, 之后在平板壓機(jī)上壓制成試片,制備的TPU具有較高的力學(xué)性能和阻尼性能
| 產(chǎn)品說(shuō)明Product description | ||||
| ·TU90A是一款聚氨酯材料.可以快速成型性,不粘模具。高強(qiáng)度,高回復(fù)性。 ·TU90A is a kind of polyurethane material which has high strength and high resilience performance.Also it can be taken shape rapidly,non-stick mold.
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| 關(guān)鍵特性Key characteristic | ||||
| 1.高強(qiáng)度,高韌性High strength and high toughness. 2.超高的耐磨性和回彈性Excellent wear resistance and high resilience. 3.成型速度快,不析出Rapid molding,no precipitation. | ||||
| 功能Function | ||||
| 產(chǎn)品應(yīng)用 Main application | 手機(jī)保護(hù)套Phone protective cover | 電腦產(chǎn)品Computer products | ||
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| 儀器外殼Instrument shell | 體育用品Sports equipment | ||
| 加工方法Processing method | 注塑成型Injection molding | |||
| 環(huán)保認(rèn)證 Environmental certification | ROHS | REACH | EN71-3 | |
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| PAHS | ASTM-F963 | Phthalate | |
| 顏色Color | 透明Transparent | |||
| 氣味Smell | 少許樹(shù)脂味A little resin smell | |||
| 外型Appearance | 圓球形小顆粒Cylindrical particle,about 3mm×1.5mm | |||
| 儲(chǔ)藏期Storage period | 常溫下通風(fēng)干燥,12個(gè)月Ventilated dry at normal temperature,about 12 months | |||
| 包裝方式Packaging method | 25公斤/袋 25kg/bag | |||
產(chǎn)品應(yīng)用精選
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