Viscose fiber, also known as viscose silk, is a type of artificial fiber. Viscose fiber is the main variety of artificial fibers and the second largest chemical fiber variety in China. Its main raw material is chemical pulp, including cotton pulp and wood pulp. Natural cellulose is separated and regenerated through chemical reactions. The main raw material used in China is cotton pulp. Viscose fiber has good moisture absorption, is easy to dye, is not prone to static electricity, and has good spinnability, and is widely used in various fields such as textiles and clothing

Characteristics

The basic composition of viscose fibers is cellulose (C6H10O5) n. The cross-section of ordinary viscose fibers is a serrated skin core structure, with longitudinal straight and transverse grooves.

. And the rich fiber without skin core structure has a circular cross-section. Viscose fibers have good moisture absorption, with a moisture regain of around 13% under general atmospheric conditions. After moisture absorption, the fabric significantly expands, with a diameter increase of up to 50%, resulting in a hard hand feel and a high shrinkage rate after entering the water. The breaking strength of ordinary viscose fibers is smaller than that of cotton, about 1.6~2.7cN/dtex; The elongation at break is greater than that of cotton, ranging from 16% to 22%; The wet strength decreases significantly, about 50% of the dry strength, and the wet elongation increases by about 50%. Its modulus is lower than that of cotton, and it is prone to deformation under small loads, while its elastic recovery performance is poor. Therefore, the fabric is prone to elongation and dimensional stability is poor. Rich fiber has higher strength, especially wet strength, than ordinary adhesive, lower elongation at break, and good dimensional stability. Ordinary adhesive has poor wear resistance, while rich fiber has improved. The chemical composition of viscose fibers is similar to that of cotton, so they are more alkali resistant and less acid resistant, but their alkali and acid resistance are worse than those of cotton. Rich fiber has good alkali and acid resistance. The dyeing properties of viscose fibers are similar to those of cotton, with complete dyeing chromatography and good dyeing performance. In addition, the thermal properties of viscose fibers are similar to those of cotton, with a density close to that of cotton ranging from 1.50 to 1.52g/cm3. The hydroxyl groups of cellulose macromolecules are prone to various chemical reactions. Therefore, viscose fibers can be modified by grafting and other methods to improve their properties and produce various special purpose fibers. Ordinary viscose fibers have good moisture absorption, are easy to dye, are not prone to static electricity, and have good spinnability. Short fibers can be spun pure or mixed with other textile fibers. The fabric is soft, smooth, breathable, comfortable to wear, and has a bright color and good color fastness after dyeing. Suitable for making underwear, outerwear, and various decorative items. Long silk fabric is lightweight and can be used not only as clothing material, but also to weave bedding and decorative fabrics. The disadvantages of this type of adhesive fiber are poor fastness, low wet modulus, high shrinkage rate, and easy deformation, as well as poor elasticity and wear resistance Application Scope

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms

3. Used as a sales report: issuing legally effective testing reports to make consumers more confident

4. Papers and research: Provide professional personalized testing needs

5. Judicial services: providing scientific, fair, and accurate testing data

6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems

100% inspection and testing process:

1. Telephone communication and confirmation of requirements

2. Recommend solutions and confirm quotations

3. Mail samples and arrange testing

4. Progress tracking and result feedback

5. Provide reports and after-sales service

6. If urgent or priority processing is required

Testing and testing characteristics:

1. The testing industry is fully covered, meeting different testing needs

2. Fully cover the laboratory and allocate localized testing nearby

3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing, with no testing fees charged

5. Self service order delivery for free on-site sampling

6. Short cycle, low cost, and attentive service

7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc

8. The testing report is authoritative and effective, and is generally used in China