2015年8月25日星期二

The tensile breaking strength of fiberglass chopped strand mat

Prescribed tensile breaking strength is mainly on account of the use of performance of mat,chopped strand mat strength value is not high, easy to tear, which is one of the good process of the chopped strand mat compared with reinforcement material. But If the mat itself has a small tensile strength, easily damaged for the final products, it will have difficulty to use. Foreign enterprises standards set forth in the tensile strength, and the index value is very high, not only to assess the average, but also the assessment test a single value, while JISIma 41l not specified.
In the standard-setting process, we have a large number of tests for the chopped strand mat tensile breaking strength, from the test values, the chopped strand mat tensile strength test values fluctuate quite large. And it does not follow a normal distribution, which gives value of the index has brought some difficulties. It’s different from Glass fiber fabric and glass fiber yarn, the value of chopped strand mat tensile breaking strength is mainly dependent on the adhesive bonding effect. So the number and quality of the adhesive bond and the binder uniformity becomes the mainly factors that influence chopped strand mat tensile breaking strength.
On the valuation indicators, in addition to reference the foreign companies standard, but a large number of domestic samples tested. Through test single-value to divide the range, and statistics the appears frequency and other methods to finalize the strength index values for different specifications of the mat. After consultation with users that meet the requirements.

没有评论:

发表评论