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ppr與pvdf的熱熔溫度

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ppr與pvdf的熱熔溫度:
PPR的熱熔溫度約為260°C。如果溫度太低,很容易引起錯誤的焊接,并且焊接不牢固。如果溫度過高,則很容易引起材料分解,從而影響焊接強度。PVDF聚偏二氟乙烯,外觀為半透明或白色粉末或顆粒,緊密排列在分子鏈之間,具有牢固的氫鍵,氧指數為46%,不燃,結晶度為65%至78%,密度為1.77?1.80g/cm3,熔點為172°C,熱變形溫度為112?145°C,長期使用溫度為-40?150°C。 。以上文獻若需轉載請備注出處:pbt塑料 //shanglikaiguan.cn/

延伸閱讀—PVDF 沙伯基礎 LNP™ LUBRICOMP™ 5CL23 compound應用案列
潤滑,耐磨損性良好 注射成型
填料:碳纖維增強材料, 15% 填料按重量。
參考數據
性能項目 試驗條件[狀態] 測試方法 測試數據
比重 ASTMD792 1.84 g/cm3
密度 ASTMD792 1.84 g/cm3
收縮率-流量(24小時) ASTMD955 0.30to0.50 %
MoldingShrinkage-AcrossFlow(24hr) ASTMD955 1.0to3.0 %
吸水率(24hr,50%RH) ASTMD570 0.030 %
吸水率(平衡,23°C,50%RH) ISO62 0.050 %
拉伸模量2 ASTMD638 15800 MPa
拉伸模量 ISO527-2/1 14500 MPa
抗張強度3(斷裂) ASTMD638 84.0 MPa
拉伸應力(斷裂) ISO527-2/5 77.0 MPa
伸長率4(斷裂) ASTMD638 0.80 %
拉伸應變(斷裂) ISO527-2/5 0.70 %
彎曲模量4(50.0mm跨距) ASTMD790 12500 MPa
彎曲模量5 ISO178 11900 MPa
彎曲應力 ISO178 100 MPa
彎曲強度4(屈服,50.0mm跨距) ASTMD790 108 MPa
摩擦系數 Dynamic ASTMD3702Modified 0.53
摩擦系數 Static ASTMD3702Modified 0.44
磨損因數 Ring ASTMD3702Modified 0.00 10^-10in^5-min/ft-lb-hr
磨損因數 Washer ASTMD3702Modified 5.00 10^-10in^5-min/ft-lb-hr
懸壁梁缺口沖擊強度(23°C) ASTMD256 55 J/m
懸壁梁缺口沖擊強度6(23°C) ISO180/1A 5.6 kJ/m2
懸壁梁缺口沖擊強度(23°C) ASTMD4812 200 J/m
無缺口伊佐德沖擊強度5(23°C) ISO180/1U 13 kJ/m2
裝有測量儀表的落鏢沖擊(23°C,TotalEnergy) ASTMD3763 13.5 J
多軸向儀器化沖擊能量 ISO6603-2 3.30 J
載荷下熱變形溫度(0.45MPa,未退火,3.20mm) ASTMD648 168 °C
HeatDeflectionTemperature7(0.45MPa,Unannealed,64.0mmSpan) ISO75-2/Bf 166 °C
載荷下熱變形溫度(1.8MPa,未退火,3.20mm) ASTMD648 164 °C
熱變形溫度7(1.8MPa,未退火,64.0mm跨距) ISO75-2/Af 158 °C
線形熱膨脹系數-流動(-30到30°C) ASTMD696 2.1E-5 cm/cm/°C
CLTE-Transverse(-30to30°C) ASTMD696 8.4E-5 cm/cm/°C
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