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© 《China Plastics》
© 《China Plastics》
China Plastics ›› 2021, Vol. 35 ›› Issue (10): 26-30.DOI: 10.19491/j.issn.1001-9278.2021.10.005
• Materials and Properties • Previous Articles Next Articles
WU Tengda(), ZHUANG Jibin, DIAO Xuefeng, WANG Qingwen
Received:
2021-03-10
Online:
2021-10-26
Published:
2021-10-27
CLC Number:
WU Tengda, ZHUANG Jibin, DIAO Xuefeng, WANG Qingwen. Thermal Distortion Performance of Injection Molded Stereocomple Poly(lactic acid)[J]. China Plastics, 2021, 35(10): 26-30.
一次升温温度/℃ | PLA均聚物 | SC?PLA | ||
---|---|---|---|---|
二次熔融 温度/℃ | 二次熔融焓/J?g-1 | 二次熔融 温度/℃ | 二次熔融焓/J?g-1 | |
210 | — | — | 233.6 | -97.9 |
220 | — | — | 237.5 | -104.9 |
230 | 173.6 | -7.6 | 239.4 | -76.8 |
235 | 174.0 | -42.6 | 221.3 | -20.5 |
240 | 174.1 | -46.6 | 220.5 | -16.4 |
250 | 173.3 | -44.9 | 217.8 | -11.6 |
一次升温温度/℃ | PLA均聚物 | SC?PLA | ||
---|---|---|---|---|
二次熔融 温度/℃ | 二次熔融焓/J?g-1 | 二次熔融 温度/℃ | 二次熔融焓/J?g-1 | |
210 | — | — | 233.6 | -97.9 |
220 | — | — | 237.5 | -104.9 |
230 | 173.6 | -7.6 | 239.4 | -76.8 |
235 | 174.0 | -42.6 | 221.3 | -20.5 |
240 | 174.1 | -46.6 | 220.5 | -16.4 |
250 | 173.3 | -44.9 | 217.8 | -11.6 |
样品名称 | 原料方案 | 注射温度/℃ | 射出 起点/mm | 射出 终点/mm | 射出 尖压/bar | 最大 射速/% | 冷却 时间/s | 是否成型 |
---|---|---|---|---|---|---|---|---|
IM0 | SC?PLA | 220/220/220/210 | — | — | — | — | — | 否 |
IM1 | 235/235/235/210 | — | — | — | — | — | 否 | |
IM2 | 240/240/240/210 | 75.5 | 36.2 | 71 | 71 | 20 | 是 | |
IM3 | SC?PLA/PLLA /PDLA质量比=1/4.5/4.5 | 220/220/220/210 | 75.4 | 47.2 | 87 | 69 | 10 | 是 |
IM4 | 235/235/235/210 | 75.4 | 37.5 | 75 | 72 | 10 | 是 | |
IM5 | 240/240/240/210 | 75.3 | 24.2 | 75 | 72 | 20 | 是 |
样品名称 | 原料方案 | 注射温度/℃ | 射出 起点/mm | 射出 终点/mm | 射出 尖压/bar | 最大 射速/% | 冷却 时间/s | 是否成型 |
---|---|---|---|---|---|---|---|---|
IM0 | SC?PLA | 220/220/220/210 | — | — | — | — | — | 否 |
IM1 | 235/235/235/210 | — | — | — | — | — | 否 | |
IM2 | 240/240/240/210 | 75.5 | 36.2 | 71 | 71 | 20 | 是 | |
IM3 | SC?PLA/PLLA /PDLA质量比=1/4.5/4.5 | 220/220/220/210 | 75.4 | 47.2 | 87 | 69 | 10 | 是 |
IM4 | 235/235/235/210 | 75.4 | 37.5 | 75 | 72 | 10 | 是 | |
IM5 | 240/240/240/210 | 75.3 | 24.2 | 75 | 72 | 20 | 是 |
样品名称 | 冷结晶 温度/℃ | 冷结晶焓/J?g-1 | PLA均聚物 | SC?PLA | 热变形温度/℃ | ||||
---|---|---|---|---|---|---|---|---|---|
熔融温度/℃ | 熔融焓/J?g-1 | 结晶度/% | 熔融温度/℃ | 熔融焓/J?g-1 | 结晶度/% | ||||
IM2 | 96.83 | 32.57 | 173.36 | -20.16 | 13.3 | 227.11/241.52 | -65.29 | 46.0 | 55.4±0.6 |
IM3 | — | — | 173.25 | -2.51 | 2.7 | 225.33/239.41 | -90.57 | 63.8 | 62.5±1.3 |
IM4 | 98.45 | 27.29 | 174.42 | -24.53 | 3.0 | 227.15/234.8 | -72.60 | 51.1 | 57.0±0.4 |
IM5 | 96.68 | 47.45 | 174.83 | -34.68 | 13.7 | 226.11 | -52.87 | 37.2 | 55.8±0.4 |
样品名称 | 冷结晶 温度/℃ | 冷结晶焓/J?g-1 | PLA均聚物 | SC?PLA | 热变形温度/℃ | ||||
---|---|---|---|---|---|---|---|---|---|
熔融温度/℃ | 熔融焓/J?g-1 | 结晶度/% | 熔融温度/℃ | 熔融焓/J?g-1 | 结晶度/% | ||||
IM2 | 96.83 | 32.57 | 173.36 | -20.16 | 13.3 | 227.11/241.52 | -65.29 | 46.0 | 55.4±0.6 |
IM3 | — | — | 173.25 | -2.51 | 2.7 | 225.33/239.41 | -90.57 | 63.8 | 62.5±1.3 |
IM4 | 98.45 | 27.29 | 174.42 | -24.53 | 3.0 | 227.15/234.8 | -72.60 | 51.1 | 57.0±0.4 |
IM5 | 96.68 | 47.45 | 174.83 | -34.68 | 13.7 | 226.11 | -52.87 | 37.2 | 55.8±0.4 |
样品 名称 | SC?PLA的熔融温度/℃ | SC?PLA的熔融焓/J?g-1 | SC?PLA的结晶度/% | 热变形 温度/℃ |
---|---|---|---|---|
IM2 | 231.77/242.73 | -93.15 | 65.6 | 151.5±4.2 |
IM3 | 231.61/238.93 | -99.78 | 70.3 | 150.2±6.9 |
IM4 | 232.37 | -84.27 | 59.3 | 121.1±5.6 |
IM5 | 234.71 | -86.57 | 61.0 | 128.2±3.7 |
样品 名称 | SC?PLA的熔融温度/℃ | SC?PLA的熔融焓/J?g-1 | SC?PLA的结晶度/% | 热变形 温度/℃ |
---|---|---|---|---|
IM2 | 231.77/242.73 | -93.15 | 65.6 | 151.5±4.2 |
IM3 | 231.61/238.93 | -99.78 | 70.3 | 150.2±6.9 |
IM4 | 232.37 | -84.27 | 59.3 | 121.1±5.6 |
IM5 | 234.71 | -86.57 | 61.0 | 128.2±3.7 |
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