高分子材料毛細管流變儀  采用負荷加載，設(shè)計合理，計算機控制并實現(xiàn)負荷連續(xù)加載，控制精度高，穩(wěn)定性能好。毛細管流變儀可繪制高分子材料的應力應變曲線、塑化曲線，測定軟化點、熔融點、流動點的溫度。并繪制曲線，打印完整報告單。

高分子材料毛細管流變儀  主要技術(shù)參數(shù)：    　

①　最大試驗容量　5kN10kN 

②　測試速度　0.005-20 mm/min

③　負荷測試精度    ?0.5%

④　負荷分辨率100000碼

⑤　位移精度    ?0.5%

⑥　變形精度    ?0.5%

⑦　變形分辨率    0.01mm

⑧　動態(tài)速度比　1:40,000

⑨　最高測試溫度　400?C   

⑩　溫度控制　PID控制，解析度0.1?C，誤差度<?O.5?C

?　升溫速率1-10℃/min，連續(xù)可調(diào)，并可快速升溫

?　控溫精度顯示<?0.5℃  

?　溫度分辨率0.1℃

?　料筒直徑　11.28 mm：15mm：9.5  擇一

?　加熱料筒長度　200 mm

?　料筒材質(zhì)    碳化鎢

?　測試膛　電子加熱測試膛，抽換式料筒

?　壓力傳感器　容量擇一　1000bar700 bar1400bar  

?　精度　< 0.25%

?　材質(zhì)　不銹鋼、可抗腐蝕、耐高溫

21　毛細管 口膜材質(zhì)　碳化鎢

22　尺寸（L/D）　5/0.5、10/1、20/1、40/1mm  

23　塞頭直徑φ11.28 -0.012mm-0.05mm

24　塞頭面積1cm2

25　測試模式　恒速、恒壓、等模式

26　控制軟體　BML系統(tǒng)

27　電源　220V，50/60Hz，8A　

28　重量　180 kg

The capillary rheometer adopts load loading, with reasonable design, computer control and continuous load loading, high control accuracy, and good stability performance. The capillary rheometer can draw stress-strain curves and plasticization curves of polymer materials, and measure the temperature of softening point, melting point, and flow point. Draw the curve and print the complete report.

Main technical parameters:

①Maximum test capacity 5kN 10kN

②Test speed 0.005-20 mm/min

③Load test accuracy?0.5%

④Load resolution 100000 yards

⑤Displacement accuracy?0.5%

⑥D(zhuǎn)eformation accuracy?0.5%

⑦Deformation resolution 0.01mm

⑧Dynamic speed ratio 1:40000

⑨Maximum test temperature 400?C

⑩Temperature control PID control, resolution 0.1?C, error<?0.5?C

?Heating rate 1-10℃/min, continuously adjustable, and capable of rapid heating

?Temperature control accuracy display<?0.5℃

?Temperature resolution 0.1℃

?Material cylinder diameter 11.28 mm: 15mm: 9.5, choose one

?Heating cylinder length 200 mm

?Material of material cylinder: tungsten carbide

?Test chamber electronic heating test chamber, replaceable material cylinder

?Select a pressure sensor capacity of 1000bar, 700 bar, and 1400bar

?Precision<0.25%

?Material: stainless steel, corrosion-resistant, high-temperature resistant

21 Capillary Mouth Membrane Material Tungsten Carbide

22 Dimensions (L/D) 5/0.5, 10/1, 20/1, 40/1mm

23. Plug diameter: diameter of 11.28-0.012mm-0.05mm

24 plug area 1cm2

25 testing modes: constant speed, constant voltage, etc

26 Control Software BML System

27 power supply 220V, 50/60Hz, 8A

28 Weight 180 kg

配置名稱

1．試驗主機 一套

2．高精度控溫表 一塊

3．進口伺服控制系統(tǒng) 一套

4．進口伺服電機 一臺

5．數(shù)據(jù)采集系統(tǒng) 一套

6．數(shù)據(jù)處理系統(tǒng) 一套

7．高精度傳感器 一只

8．專用出料?？?/p>

9．5/1、10/1、20/1、40/1mm（標配）各一件

10．專用口膜托件 一只

11．品牌計算機一套

12．彩色噴墨打印機 一臺

13．專用試驗軟件 一套

14．專用工具 一套

15．說明書 一份

16．保修卡 一份

17．合格證書 一份

試驗原理

       毛細管流變儀測試的基本原理是：設(shè)定一個無限長的圓形毛細管中，塑料熔體在管中的流動為一種不可壓縮的粘性流體的穩(wěn)定層流流動；由于流體具有粘性，它必然受到來自管壁與流體方向相反的作用力。通過粘滯阻力應與推動力相平衡等流體力學過程原理的推導，可得到管壁處的剪切應力和剪切速率與壓力、熔體流速的關(guān)系如下：

材料流經(jīng)毛細管時的剪切應力為： 

               τ=R?⊿P/2L                                    

 （1）其中  R—毛細管的內(nèi)半徑，這里   R=0.635 mm          

          ⊿P—材料流經(jīng)毛細管的壓力差kg/cm2          

          L—毛細管的長度，例如選擇長徑比為30：1的毛細管，L=38.1mm

剪切速率為： =4Q/πR3                      

(2)其中 Q—擠出流量cm3/s

由此，在溫度和毛細管長徑比（L/2R）一定的條件下，測定不同的壓力下塑料熔體通過毛細管的流動速率Q，由流動速率和毛細管兩端的壓力差⊿P，可計算出相應的剪切應力和剪切速率，將一組對應的τ和在對數(shù)座標紙上繪制流動曲線，即可求得非牛頓指數(shù)（n）和熔體的表觀粘度（ηa）；改變溫度或改變毛細管長徑比，則可得到代表粘度對溫度依賴性的粘流活化能；以及離模膨脹比等表征流變特性的物理參數(shù)。

Configuration Name

1. One set of test host

2. A high-precision temperature control meter

3. One set of imported servo control system

4. One imported servo motor

5. A set of data collection system

6. A set of data processing system

7. One high-precision sensor

8. Special discharge mold port

9.5/1, 10/1, 20/1, and 40/1mm (standard) each, one piece

10. One specialized mouth film holder

11. A set of branded computers

12. One color inkjet printer

13. One set of specialized testing software

14. One set of special tools

15. One instruction manual

16. One warranty card

17. One certificate of conformity

Experimental principle

The basic principle of capillary rheometer testing is to set an infinitely long circular capillary tube, where the flow of plastic melt in the tube is a stable laminar flow of incompressible viscous fluid; Due to the viscosity of the fluid, it is inevitably subjected to forces from the pipe wall in the opposite direction of the fluid. By deducing the principles of fluid mechanics processes such as the balance between viscous resistance and driving force, the relationship between shear stress and shear rate at the pipe wall, pressure, and melt flow rate can be obtained as follows:

The shear stress when the material flows through a capillary tube is:

τ=R?⊿P/2L                                    

(1) Where R - the inner radius of the capillary, here R=0.635 mm          

ΔP - Pressure difference of material flowing through capillary tube, kg/cm2

L - The length of the capillary tube, for example, when selecting a capillary tube with a length to diameter ratio of 30:1, L=38.1mm

The shear rate is:=4Q/πR3

(2) Where Q - extrusion flow rate cm3/s

Therefore, under certain conditions of temperature and capillary length to diameter ratio (L/2R), the flow rate Q of plastic melt passing through the capillary under different pressures can be measured. Based on the flow rate and the pressure differenceΔP at both ends of the capillary, the corresponding shear stress and shear rate can be calculated. A set of correspondingτand flow curves can be plotted on logarithmic coordinate paper to obtain the non Newtonian index (n) and the apparent viscosity of the melt (ηa); By changing the temperature or the length to diameter ratio of the capillary, the viscous flow activation energy representing the temperature dependence of viscosity can be obtained; And physical parameters that characterize rheological properties, such as the expansion ratio of the mold.

1、啟動操作應用軟件。

2、輸入實驗報告信息。

3、添加數(shù)據(jù)文件及輸入實驗參數(shù),進行試驗操作。

4、篩選數(shù)據(jù)。查看篩選的數(shù)據(jù)，檢查數(shù)據(jù)的有效性和合理性。

5、顯示曲線，顯示數(shù)據(jù)。

6、試驗結(jié)束，打印保存數(shù)據(jù)及曲線。

7、關(guān)閉系統(tǒng)。

Data processing

1. Start the operating application software.

2. Enter experimental report information.

3. Add data files and input experimental parameters for experimental operations.

4. Filter data. View the filtered data and check its validity and reasonableness.

5. Display curves and data.

6. After the experiment is completed, print and save the data and curves.

7. Turn off the system.

Features and advantages:

1、The maximum load of the equipment can be selected as 5 kN or 10 kN test forces, providing a larger range of test force space to meet more test requirements; And provide 8 types of experimental discharge port films for selection, and provide more complete accessories for various material research. High control accuracy (constant temperature, constant force, constant speed), minimizing control errors and providing customers with accurate testing data.

2、The real-time acquisition system uses imported chips from the United States for more efficient data collection, with a large amount of data transmission per unit time, ensuring delicate and accurate curves.

3、This instrument uses imported sensors from the United States to achieve more precise force value accuracy and more accurate measurement results.

4、The instrument is a desktop computer; The exquisite appearance, the use of imported servo motors, servo systems, and imported ball screws make the transmission noise minimal, and the displacement accuracy more precise and efficient. It can be comparable to imported machines from abroad.

5、The proprietary format file storage is superior to traditional methods of storing data with a smaller amount. The interface design is friendly, and the layout of each functional area is clear, making it convenient for users to operate.

6、Users can edit suitable test methods based on specific samples, making it very convenient to complete the testing function

7、Multiple combinations of curves can be used to achieve "displacement" versus "viscosity" curves for different polymer materials at the same temperature. Users can communicate and customize the control software

8、Equipped with overload protection and limit protection, providing safety guarantee for smooth operation of equipment.

特點和優(yōu)勢：

一、該設(shè)備最大負荷可選5 kN、10kN試驗力，更大范圍的提供試驗力空間，滿足更多的試驗要求；并提供可供選擇試驗出料口膜8種，針對材料的各種研究提供配件更齊全。控制精度高（恒溫，恒力，恒速），最大程度減少控制誤差，為客戶提供精準的測試數(shù)據(jù)。

二、實時采集系統(tǒng)采用美國原裝進口蕊片采集比更高效，單位時間內(nèi)數(shù)據(jù)傳輸量大，保證曲線細膩準確。

三、該儀器采用進口美國世銓傳感器使得力值精度更加的精確，使測得結(jié)果更準確。

四、該儀器為臺式機；精美的外觀、采用進口伺服電機、伺服系統(tǒng)、進口滾珠絲杠使得傳動燥音極小，位移精度更精確，高效?？梢耘c國外進口機器相媲美。

五、專有格式文件存儲，優(yōu)于傳統(tǒng)方式存儲數(shù)據(jù)量過小。界面設(shè)計親和，各功能區(qū)布局清晰，方便用戶操作。

六、用戶可以根據(jù)具體試樣自行的編輯適合的試驗方法，可以非常方便地完成試驗功能

七、曲線多種組合方式、可實現(xiàn)同溫度下，不同高分子材料的“位移”對“粘度”曲線、控制軟件用戶可溝通定制

八、設(shè)有過載保護、限位保護，為設(shè)備流暢運行提供安全保障。