Degradable plastic film of _2154 -

px804726

Study of biodegradable plastic film

Masterbatch can help improve the interaction between film-forming properties and film strength, the opposite effect may reduce some of film and film strength, the film appears hard I mixed together to help Ji. to make films with certain characteristics will have this feature simply the additive into the composition. can not produce a qualified film. any kind of scientific formula designed formula is a reasonable mechanism for basis, after many experiments after repeated formulation derived from the following aspects into account; ① compatibilizer, and optional modifier selection is crucial. It should be compatible with the starch, increased interaction with each other, also compatible with PE to form a thick interfacial layer. increases interaction with the PE molecules. compatibility solution is good or bad, is determined by the membrane made of homogeneous, the mechanical strength of the key to good and bad. ② change starch for the fineness of the membrane is also crucial to the strength and thickness. starch particle size, the more evenly distributed in the membrane, the membrane from the more thin, more uniform mechanical properties of masterbatch production technology ③ Preparation of Taiwan on the grid The film, also can not ignore the starch and PE to the full mixing, blending temperature, time, pressure, speed and order of addition of additives and so must be carefully considered. We three blending technology, aims to reach the full Journal of starch PE to blend evenly. film quality index and the molecular weight of LDPE, and the distribution width, starch content, and blow molding process parameters, primarily reflected in the physical properties of _a_ two ① film tensile strength tensile strength, pulp starch LDPE content increases the molecular weight increases. Thus, in production, by adding the amount of starch and LDPE. cultivars such factors as the appropriate control, jumped the intended target completely b. elongation with the elongation of starch films content increased, LDPE decrease of molecular weight, molecular weight distribution increases. elongation is the main physical properties of film one of the degradation of plastic sheeting is generally greater than ¨ 0, elongation to achieve this standard, through the resin varieties the regulation and control of blown film process parameters to achieve. c, right angle tear strength right angle tear strength for industrial and agricultural use one of the indicators the physical properties of membranes, but also should be considered in full. ② membrane surface quality: a. there are different degrees of membrane surface a few hard and opaque appears mainly in the plastics masterbatch not fully into the state pension from the molten masterbatch formulations, appropriate increase in the use of melt flow accelerator to explore】 92 * muggy Nature 993, No. 2 (Total d period) volume, appropriately increasing the temperature of plastics, plastics masterbatch to promote uniformity and eliminate b. Upper eyelid membrane occur a few fish, also affect product quality, this may be due to degradation of resin, lower temperature and IZl membrane material, can not be too high,[link widoczny dla zalogowanych], or yellow membrane. STUDIESONDEGRADABLEPLASTICFILMSZhengChanylChertZefang (ChemicalDepartment, SichuanUniversity) Theauthorsnewestachievementsinstudiesolldegradableplasticfilmshavebeenintroducedem song atic ~ lly. Key ~ ords: bbadcgradatk ~ n, phmod ~ aadatioa, ast / c, cylinder m [Author] minister of justice, 5d years. Associate Professor. I965, graduated from Department of Chemistry, Sichuan University, now Department of Chemistry, Sichuan University, Department of Polymer work. Chen Zefang, 5d-year-old associate professor, I961, graduated from Chengdu University of Science, Department of Chemistry, Sichuan University, now teaching and research work of fine chemicals. Wang Yuzhong, 32 years old, now textile Chengdu University of Science Institute of Polymer Materials a doctorate.

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