ISO 306決定維卡軟化點溫度(VST)
此測試方法用來量測聚合物在高溫保持機械性質的能力，這樣子的測試逐漸顯得重要，因為在各種應用中塑膠持續取代許多傳統材料，測試本身藉由緩慢增加試樣的溫度並在一點施加負載來執行，一旦負載點穿透1 mm進入材料，測試即結束而溫度會記錄下來。
可惜測試並沒有提供讓使用者用於設計計算的結果，然而在品質控制或發展工具這非常有效──結果是熱塑性塑膠開始急速軟化的溫度量測。其中一個有用的測試觀點是既然試樣涵蓋最小的面積，這可以是任何大小或形狀，代表著測試根據此標準運行可以比其他標準還節省材料。
與ISO 306相似的為ASTM D1525、熱變形溫度(HDT)測試方法、ISO 75和ASTM D648。ASTM D1525與這些標準十分相似，但解釋為初期潛變。此外HDT測試操作上與「維卡」測試相似，但是使用不同的頭和試樣大小。
若您的實驗室需要熱機械測試，為何不看看我們的HDT-Vicat解決方案？我們可以提供3或6站的機器，配有油或無油傳熱介質和/或自動化選擇。我們的機器操作容易且可以輕鬆對應您的測試需求。此外，也可以利用試樣製備系統準備您測試所需的試樣。
開始ISO 306測試之前，為了熟悉測試方法和設備，請閱讀標準。
CEAST HDT Vicat Series 3 and 6 Stations Testers
The effect of temperature on the mechanical properties of plastic materials has a fundamental role in the design of components, especially in the selection of materials. Unlike metals and ceramics, plastics are extremely sensitive to the slightest changes in temperature. The selection of plastics for applications under different temperatures is a complex task. The material must be able to support a stress under operating conditions without losing its strength and without critical distortion. The effect of temperature on geometrical stability and mechanical properties in general can be studied following different procedures and methods like at constant temperature or with a temperature ramp.
- Products
- 6/19/2012
- 1.2 MB
CEAST HDT Vicat Series HV500
The effect of temperature on the mechanical properties of plastic materials has a fundamental role in the design of components, especially in the selection of materials. Unlike metals and ceramics, plastics are extremely sensitive to the slightest changes in temperature. The selection of plastics for applications under different temperatures is a complex task. The material must be able to support a stress under operating conditions without losing its strength and without critical distortion. The effect of temperature on geometrical stability and mechanical properties in general can be studied following different procedures and methods like at constant temperature or with a temperature ramp. From very simple units for QC labs to more advanced and automated systems, the Instron line of CEAST Thermal testers are designed to measure the heat deflection temperature (HDT) and the Vicat softening temperature (VST) according to the related ISO and ASTM international standards.
- Products
- 9/27/2021
- 152.0 KB
Instron HV Series for HDT and Vicat Testing
The effect of temperature on the mechanical properties of plastic materials has a fundamental role in the design of components, especially in the selection of materials. Unlike metals and ceramics, plastics are extremely sensitive to the slightest changes in temperature. The selection of plastics for applications under different temperatures is a complex task. The material must be able to support a stress under operating conditions without losing its strength and without critical distortion. The effect of temperature on geometrical stability and mechanical properties in general can be studied following different procedures and methods like at constant temperature or with a temperature ramp.
- Products
- 6/21/2018
- 1.2 MB