聚丙烯(PP)的耐候性:
1.结晶料,吸湿性小,易发生融体破裂,长期与热金属接触易分解.
2.流动性好,但收缩范围及收缩值大,易发生缩孔.凹痕,变形.
3.冷却速度快,浇注系统及冷却系统应缓慢散热,并注意控制成型温度.料温低方向方向性明显.低温高压时尤其明显,模具温度低于50度时,塑件不光滑,易产生熔接不良,留痕,90度以上易发生翘曲变形
4.塑料壁厚须均匀,避免缺胶,尖角,以防应力集中.
PP材料的其他牌号:
GAPEX RPP30EU79NA Ferro Corporation PP
GAPEX RPP30EU87HB BLACK Ferro Corporation PP
GAPEX RPP30EU88HB GREEN Ferro Corporation PP
GAPEX RPP30EU89HB BLUE Ferro Corporation PP
GAPEX RPP40DA Ferro Corporation PP
GAPEX RPP40EA35NA Ferro Corporation PP
GAPEX RPP40EB39 HB Black Ferro Corporation PP
GAPEX RPP40EU29UL-NA Ferro Corporation PP
GAPEX RPP40EV03BK Ferro Corporation PP
GAPEX RPP45EA93GY Ferro Corporation PP
Hifax HX TRC 135X/6 LyondellBasell Industries PP Alloy
Hifax TKC 115X Black LyondellBasell Industries PP
Hifax TKC 123 X LyondellBasell Industries PP
Hifax TKC 238X LyondellBasell Industries PP
Hifax TRC 134P S82589 LyondellBasell Industries PP
Hifax TRC 135X/4 Black LyondellBasell Industries PP
Hifax TRC 221P 2 LyondellBasell Industries CoPP
Hifax TYL 250P LyondellBasell Industries PP
Hifax TYL 250X LyondellBasell Industries PP
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比重 | 1.26 | g/cm3 | ASTM D792 |
熔流率 (230°C/2.16 kg) | 5.0 | g/10 min | ASTM D1238 |
收缩率 - 流动 | 0.30 | % | ASTM D955 |
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洛氏硬度 (R 计秤) | 82 | | ASTM D785 |
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抗张强度 (屈服) | 84.8 | MPa | ASTM D638 |
伸长率 (断裂) | 4.0 | % | ASTM D638 |
弯曲模量 | 8270 | MPa | ASTM D790 |
弯曲强度 (屈服) | 145 | MPa | ASTM D790 |
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悬壁梁缺口冲击强度 (23°C) | 81 | J/m | ASTM D256 |
无缺口悬臂梁冲击 (23°C) | 440 | J/m | ASTM D256 |
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热变形温度 | | | ASTM D648 |
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