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px941934
Wysłany: Pon 11:07, 04 Kwi 2011
Temat postu: Development of biodegradable non-woven _1208
Development of biodegradable non-woven
Regenerated cellulose fibers and other natural or semi-sets into the fiber to the aforementioned fine cellulose fibers and chitosan by the composition of the adhesive bond and composition. To form a network machine to form the fiber molding for the parallel, cross-shaped, irregular-shaped,
MBT schuhe preise
, or the acupuncture process, the fiber being processed corrugated solid needle-shaped and then, in the concentration of a salt solution of chitosan fiber by adding subtle caking agent solution prepared by fools. The shape of the mesh being fixed in the binder impregnated fiber, the the hot air drying can be obtained such biodegradable non-woven. Table shows the development of biodegradable non-woven fabrics of several basic properties. BD - 100S is 2dx38ram of regenerated cellulose fibers to carding machine, cross roll machine, non-directional fiber to form a network machine table: biodegradability of the basic properties of non-woven product name BD - 30DBD ~ 100SBD a 30 Ⅵ recycled fiber recycled fiber cable fiber cable Cao 100100100% recycled fiber fiber network (g / m) 301003Z thickness (mm) O. 20.8O. 2, tensile strength Longitudinal 0.61.64.5 (kg/5cm) Tear strength vertical cross 0.31.82.2 0.10.80.13 (kg) to 100g forming cross 0.10.70.19 / m of random-shaped mesh to be 100p/cm acupuncture needle machine processing. Then chitosan: lactic acid = 1:0.5 (by weight) the preparation of a chitosan salt solution, then fine cellulose fibers: chitosan salt solution = 3t7 (weight ratio) into the solution prepared after mixing fools caking agent. At this time will be processed through the needle after the random reticular fibers impregnated in the aqueous binder after drying in hot air drying machine at 100 ℃ for 5 minutes so that the adhesive bond between the fibers in the system of the biodegradable non-woven fabrics. Then the solid component of chitosan 5g / m. BD - 30D is a cross-shaped fiber network Xie obtained biological reduction of non-woven fabrics. BD --- 30W is a short crossing pattern acupuncture fiber network for the processing of the substrate biodegradability obtained non-woven, and its solid components of chitosan 1.5g / m. . The degradation of biodegradable non-woven speed now, identification of the degradation of biodegradable plastics enzymatic rate method (that is degrading enzyme degradation was observed after a few hours to days), microbiological assay (agar plate method or liquid Indian culture experiments method, generally carried out 1 week to several weeks), soil method (that is buried in the marsh cave or in the field, which normally takes for 1 month to 2 years time). These evaluation methods have advantages and disadvantages. Japanese heavy industry company with gold and soil degradation of plastic identification method. Identification method used in this soil on the sale of the Japanese market using a 20cm × 60cm × 15cm rectangular flower pots. 2cm thick mat at the bottom of the dust, and then sold on the market and 1L 14L potting mix into microbial fertilizers. To 5cm × 8cm in BD - 30D Cheung biodegradable non-woven fabrics embedded training testing the soil, then place the pots outdoors, under natural conditions set Xie degradation rate. After a test measurement, BD - 30D relentless drop in the winter disappeared completely takes about 2 months, 1 month in the summer when you need to ask can be completely degraded. Under natural conditions, soil, BD - 30D use of regenerated cellulose fibers degraded completely take 9 months to 1 year. In Japan, the current rate of degradation has been developed within 1 week of rapid non-woven biodegradable. In addition, the need for the slow degradation of 1 to 3 years to drop the non-woven Xue j are under development. Conclusion The development of biodegradable non-woven fabrics will not only gradually replace traditional, non-woven, and the application of its new features will open up in many areas, more and newer products without environmental hazards. Ongoing in many countries such basic research and application development, it will further promote this as quickly as possible biodegradable non-woven fabrics and the popularization of practical, environmental pollution, to improve the world an extremely important contribution to make. Source: 77i force J, 1990,19,19 caries translator Du Li (Mechanical and Electronic Industry Institute of command 213) Chen meters actin protein to varying rates of new rice, according to El 8 (1901) reported that spinach Tokyo University of the East Side Arts instructor invented a method of enzyme treatment Chen meters, made of rice and new rice complete the mouth ignorant of the same base of this enzyme called Since the enzyme is a benefit r has been used as additives in meat products proteolytic enzymes. use, only a very small amount of the enzyme will be immersed in warm water into the ship Mission Song Chen, Kui 1, immediately after making a small flavor of delicious rice rice. This enzyme where the role of the body without any cut, and the micro-Rong almost the emblem. (spine Li Qi)
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