聚乳酸（PLA）以玉米、木薯等农作物为原料，经微生物发酵、提取制得乳酸，再经过精制、脱水低聚、高温裂解、聚合而成。PLA具有优异的生物降解性，废弃后一年内能被土壤中的微生物完全降解，生成CO2和水，对环境不产生污染。PLA本身属脂肪族聚酯，具有通用高分子材料的基本特性，有着良好的机械加工性能，收缩率低，能够胜任大多数合成塑料的用途，被广泛用于制作包装材料、一次性餐具、家电外壳、纤维、3D耗材等。
聚乳酸的热稳定性好，加工温度170~230℃，有好的抗溶剂性，可用多种方式进行加工，如挤压、纺丝、双轴拉伸，注射吹塑。由聚乳酸制成的产品除能生物降解外，生物相容性、光泽度、透明性、手感和耐热性好，还具有一定的耐菌性、阻燃性和抗紫外性，因此用途十分广泛，可用作包装材料、纤维和非织造物等，目前主要用于服装(内衣、外衣)、产业(建筑、农业、林业、造纸)和医疗卫生等领域。
2500HP物性表
| 基本信息 |
|
| 特性 |
可更新资源 食品接触的合规性 粘度，高 |
| 用途 |
通用 文具 装饰部件 |
| 加工方法 |
|
| 物理性能 |
额定值 |
单位制 |
测试方法 |
| 比重 |
1.24 |
g/cm3 |
ASTM D792 |
| 熔流率（熔体流动速率）(210°C/2.16 kg) |
8.0 |
g/10 min |
ASTM D1238 |
| 收缩率 - 流动 |
|
|
|
| --1 |
1.7 到 1.8 |
% |
|
| --2 |
0.30 到 0.40 |
% |
|
| Relative Viscosity3 |
4.0 |
|
ASTM D5225 |
| 机械性能 |
额定值 |
单位制 |
测试方法 |
| 抗张强度 |
|
|
ASTM D638 |
| 屈服4 |
65.5 |
MPa |
ASTM D638 |
| 屈服5 |
64.1 |
MPa |
ASTM D638 |
| 伸长率 |
|
|
ASTM D638 |
| 断裂6 |
4.3 |
% |
ASTM D638 |
| 断裂7 |
3.6 |
% |
ASTM D638 |
| 弯曲模量 |
|
|
ASTM D790 |
| --8 |
4450 |
MPa |
ASTM D790 |
| --9 |
3640 |
MPa |
ASTM D790 |
| 弯曲强度 |
|
|
ASTM D790 |
| --10 |
126 |
MPa |
ASTM D790 |
| --11 |
113 |
MPa |
ASTM D790 |
| 冲击性能 |
额定值 |
单位制 |
测试方法 |
| 悬壁梁缺口冲击强度 |
|
|
ASTM D256 |
| --12 |
40 |
J/m |
ASTM D256 |
| --13 |
19 |
J/m |
ASTM D256 |
| 热性能 |
额定值 |
单位制 |
测试方法 |
| 载荷下热变形温度 |
|
|
ASTM E2092 |
| 0.45 MPa, 未退火14 |
144 |
°C |
ASTM E2092 |
| 0.45 MPa, 未退火15 |
54.0 |
°C |
ASTM E2092 |
| 结晶峰温度 (DSC)16 |
180 |
°C |
|
| 光学性能 |
额定值 |
|
|
| Clarity |
|
|
|
| --17 |
Opaque |
|
|
| --18 |
Transparent |
|
|
| 挤出 |
额定值 |
单位制 |
|
| 建议的最大水分含量 |
0.025 |
% |
|
| 料筒温度 |
45.0 |
°C |
|
| 料筒1区温度 |
191 |
°C |
|
| 料筒2区温度 |
199 |
°C |
|
| 料筒3区温度 |
210 |
°C |
|
| 接头温度 |
210 |
°C |
|
| 熔体温度 |
210 |
°C |
|
| 口模温度 |
210 |
°C |
|
| 挤压说明 |
| Screw Speed 20-150 rpmL/D ratios from 24:1 to 32:1Compression ratio of 2.5:1 to 3:1Note: Amorphous polymer must be dried below 120°F (50°C). |
| 备注 |
| 1 . |
Molded crystalline with 120°C mold temperature where formula included 1wt% nucleating agent (LAK-301 from Takemoto Oil Fat) |
| 2 . |
Molded amorphous with 26°C mold temperature |
| 3 . |
Measured at 1.0 g/dL in chloroform at 30°C |
| 4 . |
Molded crystalline with 120°C mold temperature where formula included 1wt% nucleating agent (LAK-301 from Takemoto Oil Fat) |
| 5 . |
Molded amorphous with 26°C mold temperature |
| 6 . |
Molded crystalline with 120°C mold temperature where formula included 1wt% nucleating agent (LAK-301 from Takemoto Oil Fat) |
| 7 . |
Molded amorphous with 26°C mold temperature |
| 8 . |
Molded crystalline with 120°C mold temperature where formula included 1wt% nucleating agent (LAK-301 from Takemoto Oil Fat) |
| 9 . |
Molded amorphous with 26°C mold temperature |
| 10 . |
Molded crystalline with 120°C mold temperature where formula included 1wt% nucleating agent (LAK-301 from Takemoto Oil Fat) |
| 11 . |
Molded amorphous with 26°C mold temperature |
| 12 . |
Molded crystalline with 120°C mold temperature where formula included 1wt% nucleating agent (LAK-301 from Takemoto Oil Fat) |
| 13 . |
Molded amorphous with 26°C mold temperature |
| 14 . |
Molded crystalline with 120°C mold temperature where formula included 1wt% nucleating agent (LAK-301 from Takemoto Oil Fat) |
| 15 . |
Molded amorphous with 26°C mold temperature |
| 16 . |
Molded crystalline with 120°C mold temperature where formula included 1wt% nucleating agent (LAK-301 from Takemoto Oil Fat) |
| 17 . |
Molded crystalline with 120°C mold temperature where formula included 1wt% nucleating agent (LAK-301 from Takemoto Oil Fat) |
| 18 . |
Molded amorphous with 26°C mold temperature |
性能对比
降解说明 
