Technical requirements for anti-static clothing in China’s anti-static standards
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Anti-static clothing anti-static standard GB12014
Anti-static clothing can prevent the accumulation of static electricity on clothing, thereby preventing accidents. China’s standard GB12014-2009 “Anti-static Clothing” refers to foreign standards and combines China’s actual production and application conditions. On the basis of the old standard, the Anti-static Clothing The technical requirements have been significantly modified and supplemented.
1. Sewing
The sewing of clothing directly affects the quality of the clothing. , the new Anti-static Clothing standard GB12014-2009 “Anti-static Clothing” stipulates the sewing requirements for anti-static clothing: suture gauge (12~14) stitches/3cm, suture gauge ( 14~16) needle/3cm. The new standard requires that the lower value of the joint strength test result shall not be less than 100 N.
2. The amount of charged charge
The amount of charged charge is the assessmentof static electricity An important indicator of protective clothingin both old and new standards, the amount of charged charge is used to reflect the anti-static performance of clothing and anti-static clothing is divided into Class A and Class B. But the difference between the two is that the old standard divides anti-static clothing into Class A and Class B according to the length of the washing resistance time. The charged charge requirement is ≤0.6 (μC/piece). The washing resistance time of Class A is greater than 33.0 h. , the washing resistance time of grade B is greater than 16.5 h. In the new standard, after Class A and Class B undergo the same washing method, the charge amount of Class A should not exceed 0.2 (μC/piece), and the charge amount of Class B should be between 0.2 (μC/piece) and 0.6 (μC /piece).
3. Test environmental conditions
The anti-static performance depends on the temperature and humidity of the environment. The differences vary greatly. The test temperature specified in the old standard is (20±5)℃, and the relative humidity is below 40%. Due to the wide humidity range, the actual test results vary greatly, which affects the scientific nature of the test. The new standard takes into account international standards and the domestic use environment and adjusts the humidity to (35±5)%, which not only reduces the test error, but also improves the scientificity, accuracy and consistency of the test.
Anti-static fabrics and Anti-static clothing produced by Municipal Textile It can meet the national GB12014 standard and the foreign EN1149 standard, and is often combined with other functions such as flame retardancy.
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