The green of polymer material evaluates systematic research

Snowdon built the polycarbonate that is based on influence of polycarbonate material environment / the lifecycle of goods of the face plate that contain aluminium of ABS evaluates a system. H.

Terho undertook to the Nokia cable of PBT/LDPE material LCA (Life Cycle Assessment) is analysed, contrasted choose the material such as LDPE, LLDPE and HDPE the distinct effect to the environment. G.

The photoelectricity induction component in the Lewis UPM-880 product to United Solar Systems Corporation, among them main material is Tefzel (gets together one kind colophony of 4 fluorine vinyl) with EVA, undertake lifecycle analysis and imitate. D.

The person such as Pollock waited for material to undertake LCA studies to the PE in product of ink-jet printing ink box, PP and polyester. H.

The person such as Tomita is mixed to compact catalog sound track pocket disk (main material is PS, polycarbonate and PC) material reclaims and use circularly undertook LCA studies. J.

A.

Stuart designs medium material to chose a model to undertake analysis and summary to product lifecycle. R.

Kulkarni builds based environment to evaluate (Environmental Assessment: The evaluation system that the electronic component environment of EIA) software system affects. These research are to be aimed at some kind particular product and polymer material, advocate if be opposite,the material in the product undertakes the environment affects an analysis. And after the environmental instruction in the product is carried out, need to regard research as analytic object with polymer itself. Through be being analysed to the lifecycle of polymer material, forecast the 3R condition of imitate polymer material, the green that builds reflective polymer characteristic evaluates a system. The polymer lifecycle 3R that is based on 3R expresses to be used to add accentuation (Reuse) and reclaim (Recycle) scale, decrease (Reduce) discard finally. To the product, great profit uses those who state product component throws the production of new product or old product directly to safeguard; Reclaim the circular recycle that represents material; And deserted the partial data that expresses that he cannot enter below one phase to produce. And say from the angle of polymer material, this concept needs reset: Great profit is used is to show material need not need to increase other constituent to throw below one phase to produce directly; Reclaiming is production of below the investment after showing data raised other constituent to undertake modified one stage; And discarding is to point to reclaim the need that the function of polymer cannot have satisfied reproduction. In this one phase, how reducing final solid litter is to decrease (Reduce) crucial. If the lifecycle process of polymer pursues 2 (A) be shown, graph 2 (B) showed polymer to change in the function in lifecycle process. Among them time place Tm states polymer is entered reclaim (Recycle) the time of level, time nods Tn to state polymer enters the time of deserted phase. Graph the lifecycle process of 2 polymer from the environment that enhances polymer friendly spend a consideration, it is to lengthen Tm and Tn as far as possible on one hand, extend the time before material enters deserted phase. Reduce the deserted amount of material as far as possible namely on the other hand, and reduce the litter effect to the environment. According to standard of ASTM (American Society For Testing Material) D0883-92, final processing can divide polymer for: Degradation, biology degradation, oxidation degradation, smooth degradation, burn wait for a method. When the final processing that has stuff, avoid to fill as far as possible bury processing and carry out again the sources of energy is changed, it is to reduce an environment the better way of bad influence. The green chroma evaluation of the crucial index polymer that polymer green spends an evaluation includes the following crucial target. These index do not isolate each other, however of mutual connection, interact. Be based on the analysis of these index, the mensurable evaluation that can spend for polymer material green builds system of a frame. Material itself includes content of add and dangerous thing to develop new material to enhance the applied function of polymer to reach, normally need undertakes additive material modified to polymer. But of RoHS and congener law carry out, to the accretion of polymer material put forward to restrict. Requirement generator is when material of polymer of development, production, must restrict much chromium of use lead, mercuric in material, cadmium, 6 price, bromiccer couplet the harmful material such as benzene and aether of benzene of much bromiccer couplet. Although because raw material reason or manufacturing process are medium,brought about harmful material remain, also want to be content control strict inside formulary per cent. Can circulate from what increase material consideration of performance characteristics angle, want to consider the dangerous thing content of current data not only, consider even reclaim the dangerous thing content of the material when reuse, the law asks and throw reproduction in order to make sure material can be achieved. Material reclaims the performance change that cause reclaims the polymer material function of recycle produces change necessarily, control this kind of change in lesser limits, it is the significant step that lengthens material to use cycle circularly. This is concerned with material itself not only, also reach a debit law to have main concern with treatment method, use environment. Express 1 it is 3 kinds of polymer reclaim the performance of material and new material is comparative. From the evaluation for the system, the function after a kind of material reclaims and new material phase are smaller than change, the loop of this kind of material uses possibility bigger, thereby green chroma is better. The rudimental addendum content of Nextpage material is used in polymer production in, except the consideration harmful material is controlled beyond, remain character considering other addendum even. Cannot reclaiming as a result of these rudimental material processing counteracts polymer noumenon to depart, will enter the next to produce a course, so the content of rudimental addendum is a when produce opinion of light green chroma main index likewise. The origin of these leftover addendum can be divided it is 3 kinds, one kind is for the additive that polymer modified increases and adds, it is the pollution of the generation in using next, finally is the material that degradation produces. Express 2 listed a few kinds reclaim the rudimental addendum of polymer. The rudimental subsidiary that drops polymer is the important way that raises material green to spend, include the sort of additive of reasonable control modified and measure among them, strengthen to reclaiming of material clean and decontamination, and the degradation process that controls polymer. The compatibility of the compatibility polymer of material points to polymer noumenon and accretion not only, and point to reclaim in the process as likely as other the compatibility of compound mixture. Because reclaim in the product,can not distinguish strictly in the process the polymer of different sort, so a lot of moment can have a few kinds of polymer to be entered at the same time reclaim processing program. Graph 3 listed different and phyletic polymer mutual the compatibility between. Among them numeric 1 and 2 it is better to express compatibility, numeric 3 and 4 state compatibility is poorer. It is relatively easy that as good as other material compatibility polymer reclaims relatively, green chroma is opposite also taller. Graph the environmental effect that the compatibility LCA of 3 polymer material analyses different polymer material to handle generation of the meeting in the process to differ in production, this kind of influence can pass LCA (product lifecycle assess) have mensurable consideration. Graph the 4 LCA that develop for us analyse a database. It is with 1KgPP and HDPE respectively exemple, to producing the crude oil that process place drains, the CO2 of eduction and liquid waste undertake LCA is analysed, if express,as a result 3 are shown. Program of graph 4 LCA and relevant database can see from inside the watch, each respect each other that different polymer material often affects in the environment have actor of low quality, select different attention site, can produce different evaluation result. For example, if produce system of loop of enterprise liquid waste to perfect, liquid waste is affected need not plan, consider CO2 eduction only, the LCA analysis of apparent PP is inferior to HDPE as a result. But if be main index with liquid waste, criterion HDPE is inferior to PP. Producing a LCA of knock off art to analyse is the environmental effect that showed material to arise in generate only, when the green that evaluates polymer is spent, should analyse LCA result and the union of photograph of index of a few judgement in front to undertake be evaluatinged integratedly. Production of comprehensive consideration product, reclaim reach deserted situation, just be comprehensive to material green assessment. In product production process, use one footwork and the environmental effect that two footwork cause to differ apparently. In this respect, processability is can good, OK the material that one footwork shapes produces a field in the product, green chroma is close friends at processing the data with bad performance. Reclaiming level, the environmental influence that rigid standard reclaims should be less than chemical law greatly. In deserted phase, not only pure burn and again the environmental evaluation result that the sources of energy turns a generation is disparate, burn namely the different choice that burn alone in processing or burns in all, also can cause distinct environmental effect. The lifecycle of conclusion polymer material is a very complex process. Want accurate analysis to evaluate the green chroma of polymer, have comprehensive consideration to the whole lifecycle of material with respect to need. This research undertook an analysis to polymer material from 5 respects, with preliminary build a more comprehensive polymer green to spend evaluation system. How to define the mensurable assessment technique of each respect index, how reasonable the weight in deciding each index evaluates a system in whole, it is the working key of below one phase. CNC Milling