生物降解熱固性彈性體
熱固性彈性體，雖然不利于熔融加工成型，但降解速度比較均勻，在較長時間內形狀保持率也較高。制備熱固性彈性體一般常用的方法是:首先通過共聚合反應獲得星形的預聚物，然后再將這些預聚物交聯化。星形的預聚物和最終產物通常是利用可降解性單體(如乳酸、乙交酯、e一己內酯、6一戊內酯、二氧戊環、三甲基碳酸酯等)聚合得到的。這兩種材料各自具有其的結構和性能，因此，在生物醫學方面都有很大的發展前景。已報道的PGS彈性體屬于一種熱固性的彈性體，固化成型后很難再加工成其它所需要的形狀，而且在制備的過程需要控制在高真空條件下來完成，并且還使用了有機溶劑，這將在很大程度上限制該彈性體在生物醫學方面的發展和應用。
| 產品說明Product description | ||||||||
| ·TAB60K-18是一款高性能單獨成型的高分子材料，具有優異的耐磨、耐污耐舊、耐熱性能。 ·TAB60K-18 is a kind of high performance polymer material which has excellent wear resistance ，stain resistance，old resistance and heat resistance properties.Also it can be molded separately. | ||||||||
| 關鍵特性Key characteristic | ||||||||
| 1.表面啞，手感細膩柔軟爽滑Dumb surface ，exquisite，smooth and soft touch. 2.超耐磨，高強度，高回復性，抗變形Excellent wear resistance and deformation resistance，high strength and resilience. 3.成型快、不粘模具Rapid molding，non-stick mold 4.耐候性、耐化學溶劑優異Excellent weather resistance and chemica solvent resistance. | ||||||||
| 功能Function | ||||||||
| 產品應用 Main application | 智能腕帶Smart bracelet | 手機保護套Phone protective cover | ||||||
| 儀器外殼Instrument shell | 電子器件粘膠配件Electronic plastic accessories | |||||||
| 加工方法Processing method | 注塑成型Injection molding | |||||||
| 環保認證 Environmental certification | ROHS | REACH | EN71-3 | |||||
| PAHS | ASTM-F963 | Phthalate | ||||||
| 顏色Color | 黑色 Black | |||||||
| 氣味Smell | 少許樹脂味A little resin smell | |||||||
| 外型Appearance | 圓球形小顆粒Cylindrical particle，about 3mm×1.5mm | |||||||
| 儲藏期Storage period | 常溫下通風干燥，12個月Ventilated dry at normal temperature，about 12 months | |||||||
| 包裝方式Packaging method | 25公斤/袋 25kg/bag | |||||||
| 物理性能Physical properties | 結果Result | 單位Unit | 方法Method | 成型條件Molding condition | ||||
| 比重Specific gravity | 1.07±0.02 | g/cm3 | ASTM D792 | 干燥溫度Drying temp 90 ℃ | ||||
| 硬度Hardness | 60±5 | shoreA | ASTM D2240 | 干燥時間Drying time 3h | ||||
| 拉伸強度Tensile strength | >3 | Mpa | ASTM D412 | 射嘴溫度Nozzle temp 200℃ | ||||
| 斷裂延伸Elongation at break | <750 | % | ASTM D412 | 螺筒一段溫度Screw 1 temp 190℃ | ||||
| 撕裂強度Tearing strength | >20 | Kn/m | ASTM D624 | 螺筒二段溫度Screw 2 temp 190℃ | ||||
| 熔融指數Melt index | >3 | g/10min | ASTM D1238 | 螺筒三段溫度Screw 3 temp 180℃ | ||||
| 注意事項Matters need attention | ||||||||
| 清洗料管 Purge compound | 需使用PP或 PE清洗干凈機臺螺桿，且把機臺射嘴清除干凈Please make sure you that you have cleaned the machine screw with PP or PE, and put the machine nozzle thoroughly clean. | |||||||
| 著色 Coloring
| 請選擇以PE或EVA為基材之色母，切勿使用以PVC為基材者。另外加工時請采用較高的螺桿轉速和較高的背壓，才能讓著色劑達到較好的分散效果Please select color master batch on PE or EVA material with the exception of PVC.Higher screw speed are backpressure are needed for better colorant dispersion. | |||||||
| 回收 Recycling | 二次料（水口料）回收比率建議最多10%. Consistent regrind usage of up to 10% is permissible. | |||||||
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