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Home > Quality > QUALITY TESTS

QUALITY TESTS

1) The Mooney Viscosity Test

Measurement of viscosity with the Mooney instrument is still the most important measurement in the release and acceptance testing of rubber polymers. The main thing required of test methods used in release testing is that they should have good repeatability and, above all, good between-laboratory reproducibility.

The purpose of the Mooney viscosity test is to test the hardness of the rubber and the resistance to the flow of the rubber. If the hardness and resistance to flow is high, there will be more difficult in the extrusion of the M.B. This will mean the slowing down of production.

2) Density Reading Test

The purpose of the density test is to reaffirm that the correct ingredients are used in the right amount in accordance with the specifications provided for the particular Masterbatch and compound.

3) Rheometer Test

This test method describes how capillary rheometry may be used to measure the rheological characteristics of rubber (raw or compounded). The test method covers the use of a capillary rheometer for the measurement of the flow properties of thermoplastic elastomers, unvulcanized rubber, and rubber compounds which are related to factory processing. The test is conducted to identify the processing safety of the compounds to discover how fast the compounds can be cured because the appropriate time for curing depends on the specifications for the type of compound.

4) Tensile Properties Test

Tensile properties are one of the most important aspect of qualifying a compound or plastic resin. Tensile testing is defined as determining the force required to elongate the specimen and recording how much the material has elongated until it breaks (failure).

5) Hardness Reading Test

The Durometer is the international standard for the hardness measurement of rubber, plastic and other non-metallic materials. This test is conducted to ensure the hardness of the compound falls within either the in-house specifications or customer’s specifications. If the hardness is too low, the mileage obtained from the cured liners will be lesser, vice versa, if the hardness is too high, cracks and loss of traction will ensue.

6) Flex Resistance Test

The De Mattia Flexing Apparatus is used to determine the crack growth of vulcanized rubber which is subjected to repeated bending strain or flexing and to measure the resistance to dynamic fatigue of vulcanized rubber and elastomers test specimen when subjected to repeated bending and extension. This test is constantly done on the various rubber materials manufactured by Goodway such as precured tread liners to ensure Goodway delivers products that are consistent and high in quality.

7) Heat Build-up Test

Martens Ball Test is used to investigate heat build-up in the ball of rubber compound when deformed under different loads. The result of the Martens Ball Test indicates that Supercool generates 40% less heat compared to the standard tread compound.

The frequency of testing depends on the type of product and the specifications of the customer.

8) Dimension Test

This test is done to ensure that the orbi tread or camelback’s dimensions are meeting the specifications given by the customers.