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Polylactic acid: 3D+ a new environmental point of interest
Source: | Author:xinxinghuanbao | Published time: 2018-05-24 | 1252 Views | Share:
It is reported that the desktop 3D printer developed by the company has officially entered the test stage and will be launched in June in batches. It mainly USES polylactic acid materials to keep warming and finally forms a 3D model. Polylactic acid has many advantages such as environmental protection, good mechanical performance and safety, and is widely used in automobile, disposable products, electronics, medical treatment and other fields. The listed companies indirectly related to polylactic acid in A shares are worthy of attention, such as cofco biochemical (19.67,0.790,4.18%), rainbow refinement (0.00,0.000,0.00%), hisense pharmaceutical (16.05,0.290,1.84%), etc.
Polylactic acid into desktop 3D printer materials
, according to the latest news of tianjin binhai new area is located in the area of a company called tianjin deep technology company substantial progress has been made in 3 d technology, the research and development of desktop 3 d printer officially entered the testing phase, in June this year is expected to mass market.
It is understood that the above printer mainly produces rapid prototyping of mold products, is an entry-level product. The operating principle is that the internal temperature of the printer is over 200 degrees, in which the polylactic acid materials are constantly heated and shaped, and finally form a 3d model. The printer using the 3 d scanning system is very advanced, recognition technology has the subpixel marked points, with less noise and strong anti-jamming ability, and with 3 d surface image automatic Mosaic texture function, many 3 d scanner does not have.
Polylactic acid has several advantages
As a new kind of biodegradable material, poly lactic acid using renewable plant resources, such as corn starch material proposed by the authors has good biodegradable properties, after using can completely degradation by microorganism in the nature, the resulting carbon dioxide and water, do not pollute the environment. And its strength, transparency and resistance to climate change exceed that of traditional biodegradable plastics.
Polylactic acid has good mechanical and physical properties at the same time. It is suitable for all kinds of processing methods such as blow molding and thermoplastic. With the good tensile strength and the degree of stretch, polylactic acid products can produce all kinds of ordinary processing methods, such as melt extrusion molding, injection molding, film forming, foaming molding and vacuum forming.
In addition, polylactic acid membrane has good permeability, oxygen permeability and carbon dioxide permeability, with isolation characteristic odor, also is the only good bacteriostatic and anti-mildew properties of biodegradable plastics. In addition, incineration of polylactic acid will not release nitride, sulfide and other toxic gases, strong safety.
Polylactic acid is widely used
Polylactic acid is widely used in automobile, electronic and medical fields.
Among them, Japan toray company combined with polylactic acid resin modification technology, fiber manufacturing technology and dyeing processing technology, developed a high-performance polylactic acid fiber as the main ingredient, spare tire cover, car mat. The spare tire case cover has been used in Toyota motor corp. 's 2003 fully improved small car, the Raum.
Polylactic acid is absolutely harmless to human body, so it has unique advantages in disposable tableware, food packaging materials and other disposable products. It is biodegradable and meets the high environmental requirements of all countries, especially the European Union, the United States and Japan.
The application of polylactic acid in the electronic field has also achieved remarkable results. In terms of computers, the infrared receiving part of fmv-biblo NB series notebook computers launched by Fujitsu in Japan in 2002 used pure polylactic acid parts of a quality of 0.2. In the spring of 2005 Fujitsu laptop "FMV - BIBLO NB80K" chassis, are all made by Japan's Fujitsu, Japan's Fujitsu research institute and Japan toray company 3 companies to jointly develop the PLA/PC alloy. On the mobile side, NTT DoCoMo and SONY Ericsson mobile communications inc. tested the PLA in the case in April 2005. In 2006 Fujitsu, Fujitsu and toray jointly developed the PLA/PC alloy, which is 1.5 times as impact-resistant as the plaaf, and is used for components such as cellphone case. In addition, Fujitsu and Fujitsu have jointly developed the LS packaging band for mobile phones based on the PLA, with tear strength and compression strength more than double that of PC preparation materials.
Biopharmaceutical industry is the earliest application of polylactic acid. In addition to the disposable infusion tools, free disassembly type products such as surgical sutures, high molecular weight polylactic acid with high mechanical properties, in countries such as Europe and the United States has already been used to substitute the stainless steel, as a new type of orthopaedics internal fixation materials such as bone screws, bone plate and is used in great quantities, it can be absorbed by the body metabolic features that make the patient from the second operation.