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Computerized universal tester for wood-plastic materials ASTM D7031

Computerized universal tester for wood-plastic materials

Introduction of WPC

Wood-plastic composite material is a composite material made of wood or other cellulose-based materials and thermoplastics by compounding and molding, also known as wood-plastic composite material, referred to as "plastic wood", also known as "wood plastic".Wood-plastic composite materials can give full play to the advantages of the middle components of the material, overcome the limitations of use caused by low wood strength, high variability and low elastic modulus of organic materials, and can fully benefit the waste wood and plastics, reducing environmental pollution.

The physical properties of wood-plastic composites can be tested according to the following relevant test methods:

GB/T 29418 test method of evaluating the properties of wood-based panels and surface decorated wood-based panels

ASTM D7031 standard guide for evaluating mechanical and physical properties of wood-plastic composite products

GB/T 14018 method of testing nail holding power of wood

ISO 9087 wood --- determination of nail and screw holding power under axial load application

GB/T 17657 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels

ISO 16984 wood-based panels --- determination of tensile strength perpendicular to the plane of the panel

ISO 16978 wood-based panels --- determination of modulus of elasticity in bending and of bending strength

ISO 16981 wood-based panels --- determination of surface soundness

EN 310 wood-based panels --- determination of modulus of elasticity in bending and bending strength

The bending and compressive properties of plastic-wood composite materials can be tested by a computer-controlled electronic universal testing machine. The characteristics of the testing machine are as follows:

1. Using AC servo motor and AC servo speed control system to control the test process, the control accuracy and quality are greatly improved, stable, efficient, low noise (basically no noise at low speed) and the control speed range is greatly widened (0.05-500mm/min) ), which is not only conducive to low-speed testing of conventional materials (metal, cement, concrete, etc.), but also conducive to high-speed testing of non-metallic materials (rubber, etc.), and can also be used to quickly adjust the test space at no-load, saving auxiliary test time. This test speed meets the requirements for most metal and non-metallic materials.

2. The deceleration mechanism composed of synchronous toothed belt and precision ball screw pair makes the structure more concise and bright, and the transmission efficiency is greatly improved, more coordinated.

3. The double-space structure with independent tension and compression is adopted, which is convenient to operate and avoids the troublesomeness of changing different test accessories when tension and compression are in the same space.

4. Sensors of different specifications can be configured according to requirements, which greatly widens the test range and meets the measurement requirements of different test loads.

5. The main engine adopts a full-spray plastic shell, which is elegant and beautiful in shape.

6. Using advanced control technology, it has three closed-loop control modes of stress, strain and displacement. Each control loop can be automatically switched, and can achieve a smooth transition without impact when switching between modes, and can display the test force, peak value and displacement, speed, test status, test curve, etc.

7. It can control and maintain the rate of test force, deformation and displacement.

8. It can realize the fast/slow lifting and lowering adjustment of the beam when the sample is clamped, and the operation is flexible and can be switched at will.

9. It has the function of returning to the initial position after the test, which is efficient and fast.

10. It has perfect limit protection function, overload, overcurrent protection, automatic shutdown of test break and other functions, which is reliable and safe.

11. Self-built powerful test database, test data can be saved, queried and called at any time.

12. Provide a variety of report printing interfaces, users can edit reports in any format according to their needs, and print them out;

13. The whole control system has high cost performance and high reliability.

14. Carry out tensile tests on materials according to national standards or standards provided by users, count and process test data, and then output and print various required test curves and test reports. Load-time, load-displacement, and displacement - Time, deformation-time and other test curves are displayed during test. Test curves can be enlarged, compared, and traversed, and the test process is monitored, very smart and convenient.

15. Provide professional users with "Standard Addition Program Editor" software, users can flexibly add required standards according to actual needs;

16. The test software under the Windows platform has strong data and graphics processing functions, can print out complete test reports and test curves in real time, and can reserve data interfaces to directly connect to the comprehensive information management network of the enterprise (laboratory). It can also be customized according to the specific situation of the user's local area network.

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