Parallel Plate Plastometer Overview
ASTM D926: Standard Test Method for Rubber Property—Plasticity and Recovery (Parallel Plate Method)
The plasticity number and the recovery of the test specimen are related to the flow properties and the elastic properties, respectively, and may be useful in predicting processing characteristics, such as ease of forming and extrusion characteristics.
In this test method and with Qualitest Parallel-Plate Plastometer, plasticity is measured in an inverse manner, as noted by the final height of the specimen. Thus, high plasticity rubbers (high degree of flow during test) are indicated by a low plasticity number.
This test method covers the determination of plasticity and recovery of unvulcanized rubber by means of the parallel plate plastometer. Uncompounded, compounded, and reclaim rubber may be tested.
- Suitable for testing the plasticity value and recovery value of unvulcanized rubber, uncompounded, compounded, and reclaim rubber.
- At a specified temperature, a preheated specimen of a certain size is compressed between two parallel plates under a given load within a specified period of time, and the height of the specimen when the load is applied and after recovery is measured.
Parallel-Plate Plastometer for Rubber Working Principle
This Parallel-Plate Plastometer from Qualitest is used to test the plasticity value and recovery value of unvulcanized rubber, uncompounded, compounded, and reclaim rubber. At a specified temperature, a preheated sample of a certain size is placed between two parallel plates, a specific load is applied for compression within a specified time, and the recovery height of the sample after applying the load is measured.
The calculation method of the recovery value is as follows: use a cylindrical specimen with an original height close to 10mm and a volume of 2cm³ to withstand a compressive force of 49N within a specified time. After removing the compressive force, the difference between the recovered height of the sample and the original height within the specified time, multiplied by 100, is the recovery value.
Multi-purpose Applications:
- Suitable for a variety of rubber materials, including raw rubber, plasticized rubber, and compound rubber, providing a wide range of applications.
Temperature Control:
- With a controllable temperature system, specified temperature conditions can be maintained during testing to meet the requirements of a specific application or standard.
Standard Compression Force:
- Use a certain compression force to ensure the standardization of the test and make the results more reliable.
Specimen Size Standardization:
- Use cylindrical specimens of certain sizes to ensure uniformity in the testing process.
Meet Industry Standards and Regulations:
- This Parallel Plate Plastometer can ensure that products comply with relevant industry standards and regulations, reduce risks, and improve product compliance in the market.
Through the calculation of the recovery value, the Parallel-Plate Plastometer can gain a deeper understanding of the material's resilience after being stressed and provide useful data support for material selection and design.
