二氧化碳能变成可降解材料你知道吗? - 公司快讯

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二氧化碳能变成可降解材料你知道吗?

二氧化碳能变成可降解材料你知道吗?

来源网址:http://www.rsoau.com 2019-02-19 14:21:36    

二氧化碳减排,塑料赶快生物降解,这两者都是人们关注的环境热点。如果有一种技能,一起能完成这两个目标,岂不快哉!

Carbon dioxide emission reduction and plastic biodegradation are two environmental hot spots that people pay attention to. If there is a skill to achieve these two goals together, how happy!
其实,将二氧化碳变成可降解塑料早已不是愿望。
In fact, converting carbon dioxide into biodegradable plastics is no longer desirable.
从结构上,二氧化碳可视为碳酸的酸酐,且具有不饱和键,因此在合适的催化剂存鄙人,二氧化碳具有与其他单体组成高分子资料的可能性。
Structurally, carbon dioxide can be regarded as carbonic anhydride with unsaturated bonds. Therefore, it is possible for carbon dioxide to form polymer data with other monomers in suitable catalysts.
不过,虽然二氧化碳能够和数十种化合物反响制备成多种共聚物,可是因为催化剂的活性较低、选择性还不够高,加上所得聚合物的耐温功能和力学功能难以与现有工业化产品相提并论,绝大部分聚合物仅停留在实验室的猎奇水平上。
However, although carbon dioxide can react with dozens of compounds to synthesize copolymers, most of the polymers remain at the level of laboratory curiosity because of the low activity and selectivity of catalysts, as well as the difficulty in comparing the thermostability and mechanical properties of the obtained polymers with the existing industrial products.
迄今为止,只要二氧化碳和环氧化物的共聚物,尤其是二氧化碳和环氧丙烷共聚物(PPC),因为具备良好的生物降解功能、本钱相对较低,且很多利用了二氧化碳,聚合物中二氧化碳的分量含量超越40%,因而遭到高度重视。
So far, as long as the copolymers of carbon dioxide and epoxides, especially carbon dioxide and propylene oxide copolymers (PPC), have good biodegradability, relatively low cost, and many use carbon dioxide, the carbon dioxide content in the polymer exceeds 40%, so it has been highly valued.
PPC的优点在于:6个月内能彻底堆肥降解,而传统的塑料通常不具备生物降解功能;一起室温下,PPC塑料薄膜的阻氧功能优于尼龙和PET(聚对苯二甲酸乙二醇酯)。
The advantages of PPC are that it can be composted and degraded completely within 6 months, while traditional plastics usually do not have biodegradable function. At room temperature, the oxygen resistance of PPC plastic film is better than that of nylon and PET (polyethylene terephthalate).
自1969年日本科学家井上祥平完成了二氧化碳与环氧化物的共聚至今,人们已经开发了多种催化剂体系来组成PPC。
Since the copolymerization of carbon dioxide and epoxides was completed in 1969 by Japanese scientist Akihiro Inoue, many catalytic systems have been developed to form PPC.
热力学功能差距是比较大开展阻力
Thermodynamic function gap is the biggest development resistance
但现在,PPC的产业化仍在起步阶段。是什么阻止了其产业化脚步?
But now, the industrialization of PPC is still in its infancy. What prevents its industrialization?
对于工业化产品来说,聚合物的组本钱钱和生产周期至关重要。一直以来,催化剂本钱较高,聚合周期较长、聚合物的物性较低等,约束了二氧化碳共聚物的工业化生产。
For industrial products, the cost and production cycle of polymers are very important. The industrial production of carbon dioxide copolymers has been constrained by the high cost of catalysts, long polymerization cycle and low physical properties of polymers.
不过,仔细分析起来,本钱还不是二氧化碳基塑料现在面对的主要问题。以中科院长春应化所现在开发的稀土三元催化剂技能而言,每吨二氧化碳塑料中催化剂的本钱不到1500元,综组本钱仅比聚乙烯高20%至30%,投资规划比聚烯烃也小很多。
However, careful analysis, cost is not the main problem of carbon dioxide-based plastics now facing. In terms of the rare earth ternary catalyst technology developed by Changchun Yinghua Institute of Chinese Academy of Sciences, the cost of catalyst per ton of carbon dioxide plastics is less than 1500 yuan, the cost of synthesis is only 20% to 30% higher than that of polyethylene, and the investment planning is much smaller than that of polyolefin.
相对其他生物降解塑料而言,PPC中含有40%以上的二氧化碳,是一类本钱比较低的生物降解资料,有助于处理长期限制生物降解塑料开展的本钱瓶颈。因为现有PPC生产设备的规划较小,还没有发生规划化效益,导致其价格与通用塑料相比还处在较高水平。
Compared with other biodegradable plastics, PPC contains more than 40% carbon dioxide, which is the lowest cost of biodegradable materials. It helps to deal with the cost bottleneck that restricts the development of biodegradable plastics for a long time. Because the existing PPC production equipment planning is small, there is no planned benefit, resulting in its price is still at a higher level compared with general plastics.
跟着工艺包的完善和新式高效高选择性催化剂的大规划应用,大型生产设备的规划化效益将有助于本钱的进一步下降。有理由相信,即使与聚烯烃等资料相比,PPC将来在性价比上也会有必定的竞争力。
With the improvement of process packages and the large-scale planning and application of new efficient and highly selective catalysts, the planned benefits of large-scale production equipment will contribute to the further reduction of cost. It is reasonable to believe that PPC will be competitive in terms of cost performance even when compared with other materials such as polyolefins.
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