Phenolic cotton cloth laminate is made of cotton cloth impregnated with phenolic resin and then dried and hot pressed. 3136 is a laminate made of bleached cloth impregnated with phenolic resin and then hot pressed. 3025 has high mechanical properties and is suitable for insulating structural parts in machinery, motors, and electrical equipment, and can be used in transformer oil. 3136 has high mechanical strength and is suitable for use as parts of mechanical products such as rubber cloth, gear bushes and guide wheels. 2. Technical requirements The surface of the phenolic cotton laminated board should be flat, no bubbles, numb eyes and impurities are allowed, and a small amount of spots are allowed. The edges should be cut neatly, and there should be no delamination or cracks on the end face.
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