Nylon is also called polyamide in nylon hot-melt yarn, which is mainly used for synthetic fibers. Its outstanding advantage is that the abrasion resistance is 10 times higher than other fibers, 10 times higher than cotton, and 20 times higher than wool. Adding some polyamide fibers to the blended fabric can greatly improve its abrasion resistance; when stretched to 3-6 percent . It can withstand tens of thousands of times of flexing without breaking. Today we will see how this chemical fiber product nylon hot-melt yarn was discovered.
In 1930, nylon hot-melt yarn has been found a little clue. The person who discovered the nylon hot-melt yarn was a scientist's assistant. When he did the experiment, he found the unusual reaction product of the experiment.
In 1930, Carothers' assistants discovered that high polyesters obtained by polycondensation of diols and dicarboxylic acids could melt filaments, such as marshmallows, and even after cooling, the filaments could continue to be stretched several times. After cooling and stretching, the strength, elasticity, transparency and gloss of the fibers are greatly improved.
The peculiar properties of this polyester provide them with a premise that could have significant commercial value, allowing fibers to be spun from molten polymers. However, ongoing research shows that fibers obtained from polyester are only of theoretical interest. Since high polyester melts below 100 degree , it is particularly soluble in various organic solvents, but it is also slightly stable in water, so it is not suitable for textiles.
