四、原料方面
(1)無論是黏度過高或過低都可能造成產(chǎn)品飛邊。
解決方案：應(yīng)注意提高模具精度，減小模具間隙，提高合模力
(2)高粘度的樹脂會(huì)造成過大的流動(dòng)阻力，增加充模過程中的型腔背壓，從而導(dǎo)致模具分型面間隙，容易形成飛邊。
解決方案：降低粘度
五、冷卻條件問題
部件在模內(nèi)冷卻過長
解決方案：避免由外往里收縮，縮短模子冷卻時(shí)間;將制件在熱水中冷卻。
倍韌/BESTPERNE® ES50B1-03
熱塑性彈性體Thermoplastic Elastomer
| 產(chǎn)品說明Product description | |||||||
| · ES50B1-03是一款高性能高分子材料，以SEBS為主材的熱塑性彈性體。 · ES50B1-03 is a kind of high performance polymer material based on SEBS for thermoplastic elastomer. | |||||||
| 關(guān)鍵特性Key characteristic | |||||||
| 1.爽滑，耐刮擦性好。Smooth and slippery，good scratch resistance 2.抗老化及耐腐蝕性優(yōu)良。Excellent ageing resistance and corrosion resistance 3.表面啞面,具有優(yōu)良的密封性Dumb on the surface,it has excellent sealing 4.可以包PP It can be spliced with PP. | |||||||
| 功能Function | |||||||
| 產(chǎn)品應(yīng)用 Main application |
| 3醫(yī)療器材Medical device | |||||
| 4瓶蓋Bottle cap | ||||||
| 加工方法Processing method | 1 注塑成型Injection molding 2 擠出成型Extrusion molding | ||||||
| 環(huán)保認(rèn)證 Environmental certification | ROHS | REACH | EN71-3 | ||||
| PAHS | ASTM-F963 | Phthalate | |||||
| 顏色Color | 本色 Natural | ||||||
| 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(chǔ)藏期Storage period | 常溫下通風(fēng)干燥，24個(gè)月Ventilated dry at normal temperature，about 24 months | ||||||
| 包裝方式Packaging method | 25公斤/袋 25kg/bag | ||||||
| 物理性能Physical properties | 結(jié)果Result | 單位Unit | 方法Method | 成型條件Molding condition | |||
| 比重Specific gravity | 0.89±0.02 | g/cm3 | ASTM D792 | 干燥溫度Drying temp 70℃ | |||
| 硬度Hardness | 50±5 | shoreA | ASTM D2240 | 干燥時(shí)間Drying time 2Hours | |||
| 拉伸強(qiáng)度Tensile strength | >3 | Mpa | ASTM D412 | 射嘴溫度Nozzle temp 200℃ | |||
| 斷裂延伸Elongation at break | >550 | % | ASTM D412 | 螺筒一段溫度Screw 1 temp 190℃ | |||
| 撕裂強(qiáng)度Tearing strength | >16 | Kn/m | ASTM D624 | 螺筒二段溫度Screw 2 temp 180℃ | |||
| 熔融指數(shù)Melt index | <5 | g/10min | ASTM D1238 | 螺筒三段溫度Screw 3 temp 170℃ | |||
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