英语翻译聚乳酸（PLA）是一种新型的生物降解材料,使用可再生的植物资源（如玉米）所提出的淀粉原料制成.淀粉原料经由发酵过

首页/题库/442℃/2024-05-06 07:18:01

英语翻译

聚乳酸（PLA）是一种新型的生物降解材料,使用可再生的植物资源（如玉米）所提出的淀粉原料制成.淀粉原料经由发酵过程制成乳酸,再通过化学合成转换成聚乳酸.其具有良好的生物可降解性,使用后能被自然界中微生物完全降解,最终生成二氧化碳和水,不污染环境,这对保护环境非常有利,是公认的环境友好材料.关爱地球,你我有责.世界二氧化碳排放量据新闻报道在2030年全球温度将升至60℃,普通塑料的处理方法依然是焚烧火化,造成大量温室气体排入空气中,而聚乳酸塑料则是掩埋在土壤里降解,产生的二氧化碳直接进入土壤有机质或被植物吸收,不会排入空气中,不会造成温室效应.

聚乳酸的这些优点正是符合了当今人们对于环保的要求,众所周知,涤纶、丙纶等一些化学合成纤维原料来自于石油等化石原料的提炼,全球化石能源的枯竭是不可避免的,将在本世纪内基本开采殆尽.《BP世界能源统计2006》的数据表明,全球石油探明储量可供生产40多年,天然气和煤炭则分别可以供应65年和155年.目前中国主要能源煤炭、石油和天然气的储采比分别为约80、15和近50,大致为全球平均水平的50%、40%和70%左右,均早于全球化石能源枯竭速度.未来5-10年,中国煤炭国内生产量基本能够满足国内消费量,原油和天然气的生产则不能满足需求,特别是原油的缺口最大.注重能源资源的节约,提高能源利用效率,加快可再生能源的开发利用,对于中国来说既重要又迫切.不只是化石能源的储量问题,更为关键的是化石能源的污染问题,温室效应,臭氧、酸雨……等等—系列空气污染名词,伴随着我们人类踏上21世纪这块新土地.它们环绕在我们周围活动,吸引着我们的注意力,牵制着我们的行动.在这些新名词中,最为显眼的当属温室效应.因为它是—把“双刃剑”,而产生这种作用的是二氧化碳,化石能源的使用是导致二氧化碳急剧增加的主要原因.

正是在这种背景下聚乳酸无纺布应运而生,肩负起人类未来发展的重任.聚乳酸无纺布相当于涤纶丙纶等无纺布有着无与伦比的优势,最重要的两点就是来源广和绿色环保,随着化石燃料的殆尽聚乳酸的成本会相对其他原料降低,而且更符合人类对绿色环保的要求,这样聚乳酸无纺布就会在将来有着巨大的竞争力,以至于把其他类型无纺布的市场抢占.

本文通过对PLA聚乳酸长纤无纺布生产工艺要求的研究,并根据现在对PLA聚乳酸长纤无纺布的市场要求,结合对非织设备的研究,得到影响PLA聚乳酸长纤无纺布产品质量的因素,并把这些研究结果应用到提高PLA聚乳酸长纤无纺布产品质量和性能上.

优质解答：

Polylactic acid (PLA) is a new kind of biodegradable materials, using renewable plant resources (such as maize) proposed starch ingredients. Starch material made by fermentation of lactic acid, again through chemical synthesis convert poly lactic acid. It has good biodegradation, use can be completely in nature, eventually generated microbial degradation of carbon dioxide and water, no pollution, this to protect the environment very favorable, is recognized as environmentally friendly materials. Love the earth you I duty. According to the news reports worldwide emissions in 2030 will rise to 60 ℃ global temperature, common plastic processing methods are still burning cremation, caused a lot of greenhouse gases into the air, and poly lactic acid plastic is buried in the soil degradation, the carbon dioxide produced by directly into the soil organic matter or plant uptake, not into the air, won't cause the greenhouse effect.

Polylactide these advantages is consistent with the people today for environmental protection request, as is known to all, polyester, polypropylene fiber and some other chemical synthetic fiber materials from oil and other fossil material enhancement, the exhaustion of the global fossil energy is inevitable, will be in danger. Within this century basic mining "BP world energy statistics data show that 2006" global's proven oil reserves available for production more than 40 years, natural gas and coal, respectively can supply 65 years and 155 years. At present China's major energy coal, oil and natural gas reserve-production ratio of about 80, respectively, roughly 15 and nearly 50 for the global average of 50%, 40% and 70%, all global fossil energy exhausting speed earlier. The next five to 10 years, China coal basic can satisfy domestic production, domestic consumption of crude oil and natural gas production is will fail to meet demand, the gap, particularly oil is the largest. Pay attention to the conservation of energy resources, enhancing the efficiency of energy utilization, accelerate the development and utilization of renewable energy, for China is important and urgent. Don't just fossil energy reserves problem, more key is a fossil energy's pollution problems, the greenhouse effect, ozone, acid rain... And so on - series air pollution nouns, with our human on the new land of the 21st century. They around us activities, attracts our attention, dom our action. In the process, the most conspicuous, when is the greenhouse effect. Because it is -- the "double-edged sword", and produce this effect is carbon dioxide, fossil energy use is causing as major reasons for the dramatic rise of carbon dioxide.

It is in this backdrop polylactide non-woven emerged, shoulder the burden of future human development. Polylactide non-woven fabrics such as equivalent of polyester pylen nonwoven has incomparable advantage, the two most important source of green environmental protection is wide and exhausted of fossil fuels, along with the cost will be relatively polylactic acid, and other materials more accord with human reduced to green environmental protection request, such polylactide non-woven will have enormous competitive in the future, and that other types of non-woven fabric market preemption.

This article through to PLA polylactide long fiber non-woven production process requirement, and based on the study of the PLA now polylactic acid long fiber non-woven market requirements, combined with the research of the weaving machine, get influence PLA polylactide long fiber non-woven factor of product quality, and put these research results improved the PLA polylactide long fiber non-woven products quality and performance.

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