How to detect the bibulous rate of polyethylene tape
polyethylene tape bibulous rate is high and low is one of the important indexes of evaluating its quality, bibulous rate is smaller, the higher the quality. So how to detect the bibulous rate of polyethylene tape?
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the first thing you need to prepare a good analytical balance, oven, drier and other equipment. Stick two pieces of polyethylene tape in the face of pressing, and then cut into 50 mm x 50 mm specimen, and make sure the specimen clean and tidy, no bubble, crack after bonding. With the specimen in 50 ℃ + 2 ℃ oven or 24 h preprocessing normal temperature drying in the dryer. To weigh the quality of the specimen after pretreatment, accurate to 0. 1mg。
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will be preformed specimen vertical submerged in 25 ℃ + 2 ℃ of distilled water, soak for 24 h after remove the specimen, with filter paper blot moisture on the surface of the specimen can be weighed before and after soaking specimen quality, accurate to 0. 1 mg, calculated the bibulous rate of polyethylene tape.