Interpret The Tear Strength Test
introduction
Today I'm going to share with you the tear strength test. As we all know, there are three main tear resistance tests: right angle tear, trouser tear and Elmendorf tearing strength.
The most intuitive difference between them is the shape of the test sample, and today we mainly introduce the Elmendorf tearing strength. As shown in the figure, this product Five Layer Greenhouse Film is the sample used in the Elmendorf tearing strength test, so let's introduce the test process.
First Step
In the first step, we need to cut the shape of the tested product Five Layer Greenhouse Film into the shape shown in the figure, and the middle line is the starting position of the tear.
Second Step
The second step, adjust the instrument. The tester will choose the appropriate test weight according to the specific situation of the product Five Layer Greenhouse Film, and fix the sample to the instrument and equipment.
Third&Fourth Step
The third step, start the test. The instrument is used for gravity to tear the product Five Layer Greenhouse Film once, the instrument will capture the value, and the single test is over.
In the fourth step, we will continue to repeat the third step, repeating 10 times in the horizontal and vertical directions, and take the average to get the final test results.
What is the significance of tear strength in practical applications?
Our plastic film, such as Five Layer Greenhouse Film, may be pulled by external forces during damaged. If the higher the tear resistance of the film, the greater the force is needed for the film to continue to tear along the damage point, then it means that our film is less likely to continue to tear.
Therefore, choosing a film with higher tear strength can better protect agricultural production. And Shouzheng brand Five Layer Greenhouse Film after the tear resistance strength test, the data meets the national standard requirements, welcome the majority of farmers friends to come to buy.
|
Property |
Units |
Technical Requirement |
Inspection Results |
Single Judgment |
|
Tensile Strength At Break[MD] |
MPa |
≥16 |
25 |
Pass |
|
Tensile Strength At Break[TD] |
MPa |
≥16 |
23 |
Pass |
|
Elongation At Break [MD] |
% |
≥300 |
471 |
Pass |
|
Elongation At Break [TD] |
% |
≥300 |
554 |
Pass |
|
Tear Strength Of Right-Angle[MD] |
kN/m |
≥60 |
79 |
Pass |
|
Tear Strength Of Right-Angle[TD] |
kN/m |
≥60 |
82 |
Pass |
|
Light Transmission |
% |
≥85 |
92 |
Pass |
|
Haze |
% |
≤35 |
25 |
Pass |
|
Drip Performance,Initial Drip Time |
S |
≤420 |
287 |
Pass |