STUDYING THE EFFECT OF MECHANICAL IMPACT ON THE DURABILITY AND LENGTH OF VIETNAMESE COTTON FIBER AFTER GOING THROUGH A MACHINE TO REMOVE IMPURITIES

Abstract

Currently, in Vietnam and around the world, cotton is still the main raw material for the textile industry. However,
the annual cotton output in our country is still low, so we have to import cotton from many countries other than China,
America, etc. In recent years, major fluctuations in the world, especially the Covid-19 pandemic, have made the cotton
market unstable, and our country is not immune to those effects. Therefore, Vietnam has policies to develop the cotton
growing industry to proactively source domestic raw materials to partially replace imported cotton fibers and exploit the
potential of domestic raw materials. This article initially studies the effects of some mechanical impacts on the durability
and length of Vietnamese cotton fibers after going through a machine to remove impurities. Processing research data
using probability statistical methods. Research results show that after going through the mill with impurities, the fiber
strength decreases by an average of 9.97% and the cotton fiber length decreases by 7.96%.