Supply of natural green soft cotton silk (silk)

Silk, is ripe silkworm cocoon silk liquid secretion solidified continuous filaments, also known as "natural silk." It is with wool, is one of the earliest human use of animal fibers, depending on the food, but also points silkworm, oak silkworm, cassava silkworm, silkworm Zhang, Liu silkworm and Unending like. Pits from a single cocoon silk yarn called, which consists of two single fiber made by wire coated with glue. Several cocoon silk extract, wrapped together by glue silk yarn with silk (also called raw silk) and tussah points, collectively known as silk. Remove sericin silk, called refined wire. To them as the raw material, it can be processed into various breeds with loom fabric of. White T-shirt silk fibers consist of two triangular or semi-oval silk fibroin outsourcing gum, oval in cross-section. Silk fiber protein fiber, sericin and fibroin is its main part, which accounts for about 3/4 of fibroin, sericin accounting for about a quarter. Sericin and fibroin by the 18 kinds of amino acids, containing about 97% pure protein. Silk glue is water soluble globular protein preferably, the silk is dissolved in hot water degumming scouring, is the use of this feature sericin. Due to the different amino acids of sericin and fibroin, silk is fibroin, sericin as globulin. The total length of silkworm silk spit up to 1000 meters. First, silk characteristics (a), the physical properties of a silk, silk hand touch soft and flexible, practice refined degummed silk, smooth and uniform surface, smooth and elegant. Silk is a protein fiber porous, with good moisture, scattered wet performance and gas, air permeability. Limbs was soft and comfortable, with a unique "; silk-ming"; features. 2, silk high tensile strength, tensile strength of up to 3.1 ~ 3.6dN / tex (3.50 ~ 4.09gf / denier), elongation at break of up to 15 to 25%; unit cross-sectional area to withstand cutting strength of 432.1 ~ 471.4N / mm2 (44 ~ 48kgf / mm2), close to the wire. Silk wear resistance than other natural fiber, 22.2 / 24.42dtex (20/22 denier) 4A meter silk bag and the force of about 80 times. 3, silk heat resistance, and its decomposition point of about 150 ℃, while silk warm, good, feeling cool when worn. 4, good insulation properties of silk, is a poor conductor of electricity, but it will reduce resistance and reduce moisture regain high insulation performance, under normal circumstances, silk fibers regain of 8% to 14%. 5, silk dyeing good performance, available direct dyes, acid dyes, reactive dyes and various mordant dyeing, basic dyes need to add protective agents. Dyeing effect is beautiful, clear, delicate. 6, silk resistance to acids stronger than cotton, weaker than wool, with increasing concentration, increasing temperature, silk fiber suspension swelling and dissolution. Caustic even low temperatures and can dissolve the glue silk fibroin damage. 7, the fibroin silk can absorb some metals (such as tin), use of this feature can be tin incremental process, in order to increase the volume of silk and wrinkle resistance. Sericin can also use other methods to deal with fixing silk, silk acquire new material in style, taking the jewelry and make some summertime clothing. 8, defect silk fiber is long-term storage or exposure, is apt to cause yellowing and brittle by the sun after washing silk fabric is also easy to fade, some microbes can make silk discoloration fungi, affecting the quality of silk fabrics. In addition, the strength of the fiber friction, buckling strength, elongation and fatigue taking performance than synthetic fibers. (B), silk Features 1, comfort. Real Silk is composed of protein fibers, and the human body has an excellent biocompatibility, combined with a smooth surface, which stimulate the human body's friction coefficient is the lowest of all types of fiber, only 7.4%. Thus, when our delicate skin and smooth fine silk encounter, with its unique supple texture, according to the body's curves, considerate and safe care of every inch of our skin. 2, suction, put wet well. Silk protein fiber enrichment of many amino (-CHNH), amino (-NH2) and other hydrophilic groups, and because of its porous nature, easy diffusion of water molecules, so it can absorb water or emit moisture in the air, and to maintain a certain moisture. Under normal temperature, it can help the skin retain some moisture, not too dry skin; in summer wear, but also the sweat and heat discharged from the body quickly circulated, people feel very cool. Because of this performance, so that real silk is more suitable for direct contact with human skin, so people regard the silk garments of summer as necessary. Silk not only has good thermal performance, as well as good insulation. It's proud of its insulation porous fiber structure. In a silk fiber, there are a lot of very fine fibers, and these fine fibers in turn finer fibers. Thus, the seemingly solid silk is actually more than 38% is hollow, there is a lot of air in these gaps, these air prevents heat distribution, so silk has good insulation. 3, sound-absorbing, vacuuming, heat resistance. Silk fabric has a high porosity, which has a very good sound absorption and inspiratory, so in addition to the production of clothing, but also for interior decoration, such as silk carpets, tapestries, curtains, wall coverings and the like. Furnished room with silk decorations, not only can make the house spotless, and can keep quiet room. Since the silk with moisture, put wet performance and moisture resistance, inspiratory and porous, but also adjust the indoor temperature and humidity, and can harmful gases, dust, microbes siphoning. In addition, the silk fiber thermal denaturation of small, relatively resistant to heat. When it is heated to 100 ℃, only about 5 to 8% of embrittlement and thermal deformation degree than most synthetic silk large 4 to 5 times. Silk combustion temperature at 300 ~ 400 ℃, is a flame retardant fibers and synthetic fibers, the combustion temperature in the 200 ~ 2600C, that is flammable, fusible. Therefore, using silk fiber as raw material for interior decoration, not only can play acoustic, dust, insulation effect, and play fire-retardant features. 4, anti-ultraviolet. Silk protein tryptophan, tyrosine can absorb ultraviolet light, so silk has good UV resistance. The ultraviolet radiation on human skin is very harmful. Of course, the silk in the absorption of ultraviolet light, self-chemical changes occur, so that the silk in sunlight exposure, easily yellowed.