(6) Tensile strength of tensile strength
When the working length of the specimen in the test is partially stretched to a given elongation, the force per unit area calculated from the original area is the tensile stress at the elongation. For example, 100% or 300% of the tensile stress, etc., the more the tensile stress is, indicating that the force required for deformation is greater.

(7) Hardness
It is measured by a Shore hardness tester, which is expressed by the depth of the stylus pressed into the sample to be tested. The deeper the penetration depth, the smaller the hardness; the shallower, the greater the hardness, expressed in degrees of Shore A.

(8) Wear

There are several experimental methods. The commonly used Acron wear is based on the principle that the specified wheel sample (or the strip sample is firmly adhered to the wheel) and the specified grinding wheel are ground for 1.61km, and the volume of the sample is calculated. Expressed in cm3/1.61km. There is also the wear index representation, that is, the wear amount of the reference rubber is the numerator, and the wear amount of the test rubber is the denominator, the ratio is expressed in %, and the larger the value indicates the more wear resistance.

(9) fatigue life
It is common to deform the sample periodically under a certain periodic dynamic load, and the time for cracking or breaking of the material or product is expressed by the number of cycles, and of course there are other representation methods.

(10) Resistance to wet skid
It indicates that the rubber product is gripping on the water or wet road surface, and the wet skid resistance is not good, and it is easy to slip. If it is a tire, it is not easy to brake the car; if it is a sole, it is easy to slip.

(11) Rolling resistance
Mainly for tires or dynamically working products, the more resistant the rubber is, it means that the tread made with this glue is hot and has a large rolling resistance. Of course, the fuel consumption of the car is large.