What is bamboo fiber? What are the advantages and disadvantages of bamboo fiber? What are the characteristics? Xiao Bian brings you so many questions to give you a look at bamboo fiber.
1. What are the advantages of bamboo fiber?
1) It feels good, softer than cotton, and feels like “Satin satin†with good drape
2) It is warm in winter and cool in summer, water absorption is 3 times that of cotton, air permeability is good, and it is easy to clean. It is determined by the structure of the air.
3) The sterilization rate is 90%, and it has natural anti-mite, anti-odor, anti-insect and negative ion characteristics.
4) UV blocking rate is 417 times that of cotton, blocking rate is close to 100%
5) Brighter and lasting than ordinary finished products
2. What are the disadvantages of bamboo fiber?
1) Bamboo fiber finished product is delicate and not as durable as cotton towel
2) Bamboo fiber is easy to absorb moisture, wet elongation and plastic deformation
3) It is not easy to machine wash, it should be washed with gentler liquid detergent
3. What is the combustion characteristics?When the fiber is close to the flame, it will not melt, it will burn rapidly in the flame, leave the flame and continue to burn, there is a burning paper smell, less ash, black gray (partial gray)
4. Preparation of bamboo fiber:
1 Natural bamboo fiber - bamboo fiber
Bamboo fiber is a natural bamboo fiber made by a combination of physical and chemical methods.
Bamboo → Bamboo → Steamed Bamboo Tablets → Crushing and Decomposition → Enzymatic Degumming → Carding Fibers → Textile Fibers.
1) Bamboo pulp fibers: Bamboo pulp fibers are pulps made from bamboo pulp, pulp is made into pulp, and fibers are made by wet spinning.
2) Bamboo charcoal fiber: bamboo charcoal is formed after 800-degree high-temperature dry carbonization process, then micro-pulverization of bamboo charcoal using nano-technology, nano-scale bamboo charcoal micro-powder is processed through high-tech processing, and viscose spinning is added through special process. In the liquid, produce qualified bamboo charcoal fiber
3) Bamboo fiber regain rate is 12% (8.5% cotton) under standard conditions
4) The dry elongation of bamboo fiber is 21.3% (dry elongation of cotton fiber is 3-7%)
5) The dry breaking strength of bamboo fiber is 2.4cN/dtex (dry breaking strength of cotton fiber is 2.6-4.3cN/dtex), and the wet strength of bamboo fiber is only 60% of its dry strength (while the wet strength of cotton fiber is dry Strong 110%)
6) The bamboo fiber has a lower single strength, so the yarn support is controlled between 8S-60S and blended with some higher strength fibers (polyester staple fiber, cotton, modal, tencel, etc.). For pure spinning 50S-60S yarn, it is advisable to ply
7) Bamboo fiber has the characteristics of fast absorption and release of moisture, high fiber density, poor uniformity, high rigidity, and poor cohesion between fibers. and so. Its spinning is difficult and pure spinning is more difficult. Therefore, special technological measures should be taken to compensate for the lack of spinnability of bamboo fiber.
5. Characteristics of bamboo fiber yarns in the production process:1) The wet strength and elongation at break of bamboo pulp fibers show a tendency of low strength and high elongation. When the bamboo pulp fibers are treated at high temperature, the fracture strength and elongation at break tend to decrease. Therefore, when bamboo fiber is subjected to spinning, weaving and dyeing and finishing, the characteristics of bamboo fiber should be taken into consideration when designing the process parameters, and “weak and low time (such as slurry sizing, fabric rinsing, dyeing) and low temperature (sizing drying) should be adopted. Dry, fabric drying)" process principle, the use of reasonable temperature and humidity time.
2) The dry and wet fracture strength of bamboo pulp fiber is lower than that of bamboo fiber. The dry and wet elongation at break of bamboo fiber is lower than that of bamboo fiber. Elongation. Bamboo fiber is "high-strength and low-stretch" fiber. Bamboo pulp fibers are "low-strength, high-stretch" fibers. Bamboo fiber strength and elongation at break directly affect the wear resistance and dimensional stability of the garment.
3) Bamboo fiber has weak acid and alkali resistance, and its stability to acid is smaller than ordinary fiber. When the temperature rises, the destructive effect of concentrated acid is particularly strong. The swelling and dissolution of bamboo fiber in lye are stronger. The permeability of bamboo fiber is larger than that of ordinary fiber under the same conditions. Therefore, although the crystallinity of bamboo fiber is high, the structure is porous, resulting in poor alkali resistance. . Therefore, attention should be paid to the treatment of strong acid and alkali in the processing to prevent the fiber strength from dropping seriously.
1) Reference process for dyeing bamboo fiber products: singeing, desizing, scouring, bleaching, mercerizing, dyeing.
2) The wet strength of bamboo fiber is low and the puffing in water is severe. It should be dyed on a loose rope dyeing machine or on a jigger.
3) Improper dyeing and finishing of bamboo fiber gauze will result in hard-to-touch, strong damage, dull and dull surface, and can't stand out. Bamboo fiber has soft-feeling, soft luster and possesses elasticity and drape bamboo fiber belongs to regenerated cellulose fiber.
4) It is sensitive to acid and alkali. Pay attention to the concentration of acid and alkali in the pre-treatment, and control the pH value and the time of practice and bleaching. Otherwise it will affect the strength and softness of the dyed fabric.
5) Simple dyeing and finishing process of bamboo fiber yarns and knitted fabrics: The dyeing process is adopted. According to the composition and density of yarns and cloths, the bleaching and semi-filamentary processes are properly applied. The process conditions must not be excessive and the mechanical tension should be small.
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