Production Technology Study Of The Dry Way High Shrinkage Acrylic Short Fiber

Dry PAN fiber with done-bone type section has unique characteristics such as good flexibility, fluffy, fresh color and hand feeling softness, hence leading to be the best substitute of woolen. In the late 1990s, the demand for high shrinkage PAN increases rapidly for the rapid development of laselle woolen blanket. Further, in domestic high shrinkage PAN is still under research and no quantity production has been developed. Hence, there is 50% indentation every year to be imported.The key to produce high shrinkage PAN lies in the selection of technological process route. Fushun petro-chemical company acrylic fiber plant carried out a series of experiments under the conditions of minimum flabby craft and drawing 2 craft and get meaningful results. Comparisons among the results on yield, quantity, investment were made in order to determine the production techniques by the method of drawing 2 technological process route.Fushun petro-chemical Company established a 3000-ton high shrinkage PAN stable fiber experimental facility at the dry way PAN plant. They carried out industrial production tests by the means of drawing 2 technological process on the basis of laboratory experiment and managed to acquire the technics which is suitable for industrial production. To be more specific: the speed ratio of drawing 1 should be 4.2, the temperate of drawing 1 (1#, 2#, 5#, 8#, 10# tank) should be (85, 90, 90, 85。C,and room temperature); the speed ratio, temperature and speed rate of drawing 2 should be 1.432, 160。C, 150-160 m/min, respectively.According to the results of sample analysis experiments, the quality of the industrial product can completely meet the requirement of the GB/T16602, and the products have the potent of totally taking place of the imported ones in the market.