Pure lactic acid is a colorless liquid, is a colorless to pale yellow liquid. Odorless, hygroscopic. The relative density of 1.2060 (25/4 ℃). Melting point 18 ℃. Boiling point 122 ℃ (2kPa). Refractive index nD (20 ℃) ??1.4392. With water, ethanol, glycerin, insoluble in chloroform, carbon disulfide and petroleum ether. Heating under normal pressure, concentrated to 50%, part of the anhydride into milk, thus products often contain 10% -15% of the milk anhydride.
2013年8月9日星期五
polylactic acid is a bio-based plastic representation varieties
Green plastic called polylactic acid is a bio-based plastics representative varieties. Although this crystalline thermoplastic polyester has good mechanical properties and can degrade performance, but compared with the traditional PET plastic, which crystallized slowly, mostly amorphous molding products, greatly reducing its heat resistance and mechanical properties , severely restricted the materials processing and applications.Sodium lactate of Chemical Industry dedicated to the development of a nucleating agent is targeted to solve the outstanding problems that will greatly expand the application fields of polylactic acid. To packaging market, for example, only polypropylene material can meet transparency requirements. Once magnessium lactate improved transparency, with green plastic absolute advantage, will circle the considerable market share. It is understood, TMC-328 can be widely used in medical and health supplies polylactic acid, packaging products and other plastic products, processing and modification, including bandages, artificial bones and transplant supplies, shopping bags, food containers, straws, packing film, agricultural plastic film, carpets, household decorations.
订阅:
博文评论 (Atom)
没有评论:
发表评论