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物性說明
產(chǎn)品說明 | |
The scraps generated during the processing of mulilayer polyolefins/ EVAL® structures are commonly recycled in a regrind layer for sheet and bottle applications. In some cases, some technical problems may happen such as die build-up, thermal instability (gels), poor mechanical properties, poor welding or flow instability. Flow instability is occasionally observed in multilayer structures containing regrind, especially in cases where the ratio of regrind is high and/or the EVAL content in the regrind is high. The main cause of flow instability is the poor dispersion of the EVAL resin in the regrind layer due to the incompatibility between the various polymers. Improvement can be obtained by mechanically creating a better mixing during extrusion (regrind extruder, adapter size). Also, Kuraray1 R&D has developed the GF-30 resin, an effective compatibilizer, which corrects this flow instability by finely dispersing the EVAL particles in the regrind mixture. GF-30 is also an effective thermal stabilizer designed to prevent regrind degradation. The GF-30 resin is a compatibilizer and a thermal stabilizer for polyolefin-EVAL mixtures. However, with any set of operating parameters, the information presented here can not be considered absolute. It does contain general operating procedures and recommendations which should provide some guiding lines for effective operation. | |
總體 | |
材料狀態(tài) | 已商用:當前有效 |
資料 1 | Processing - Eval (English)Processing - Thermoforming (English) |
供貨地區(qū) | 北美洲 |
形式 | 顆粒料 |
加工方法 | 擠出 |
物理性能 | 額定值 | 單位制 | 測試方法 |
密度 | 0.960 | g/cm3 | ISO 1183 |
熔流率 | ISO 1133 | ||
190°C/2.16 kg | 1.3 | g/10 min | |
210°C/2.16 kg | 2.3 | g/10 min |
熱性能 | 額定值 | 單位制 | 測試方法 |
維卡軟化溫度 | 205 | °F | ISO 306/A50 |
溶融溫度(DSC) | 232 | °F | ISO 3146 |
擠壓說明 |
The recommended design for metering screws: L/D Ratio: 24 to 30 Compression Ratio: 2.6 to 3.6 Zone Distribution: Feed: 8 to 10 DCompression: 8 to 10 DMetering: 8 to 10 DThe recommended design for barrier screws: L/D Ratio: 24 to 30 Compression Ratio: 2.5 to 3 Zone Distribution: Feed: 6 to 7.5 D (25% of screw length)Transition and Melting: 12 to 15 D (50% of screw length)Metering: 6 to 7.5 D (25% of screw length) |
:何生
:86-
傳真號碼:86-
地址:廣東 東莞市
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