How to identify whether the anti-static table mat is a surface spray type or a formula type anti-static material
There are many anti-static table mat products of different materials on the market, and their anti-static capabilities are also different. This directly affects the ability and effectiveness of customers to prevent static electricity, which will actually affect customer product safety and even personal safety. .
Anti-static table mats made of rubber and PVC are more common, and the prices are also different. Under normal circumstances, rubber anti-static table mats have better overall quality, such as longer-lasting anti-static performance, more basic physical properties such as tensile strength, chemical resistance, and temperature resistance, but the price is slightly more expensive. The manufacturing processes of these two materials have achieved the ability to dissipate static electricity and conduct static electricity by adding antistatic agents and conductive carbon black into the formula. However, there are also some materials that only spray antistatic agents on the surface to achieve static dissipation. This temporary antistatic method often bury unforeseen risks for customers. How to distinguish whether it is surface spraying or formula anti-static table mat? The professional engineers of Chuangxuanbao combine actual experience and provide the following suggestions for your reference.
1. Instrumental measurement method.
The truly effective anti-static table mat has an anti-static dissipation layer and a static conductive layer. It can not only control the generation of excessive static electricity, but also release the static electricity through grounding when it comes. This type of anti-static table mat is generally divided into a two-layer structure. The surface layer is a static dissipative layer of green, blue, gray, black or red. Its surface resistance is between 10E7-10E9 ohms. Use a common surface resistance tester. It can be measured directly; the bottom layer is a black conductive layer, and the surface resistance is 10E3-10E6, or it can be measured directly with a surface resistance tester. If the customer does not have the test instrument, he can ask the supplier to provide it on-site for measurement.
Our company has conducted tests on customer feedback samples and found that some surface green layers can reach a surface resistance of 10 to the 7th to 9th ohms, but the black layer often does not reach 10 to 6th ohms or less, and is even insulated. Such materials are basically determined to be counterfeit anti-static table mats. If it is found that after one or two months of use, its surface resistance has not reached the anti-static index range, it can basically be determined that it is a spray type or a low-quality PVC material formula.