共查询到14条相似文献,搜索用时 31 毫秒
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杜邦包装用塑料部日前宣布:推出全新产品杜邦TM Biomax(r) Strong添加剂,这种材料可以改善生物基质与可生物降解聚乳酸(PLA)包装的性能。从而使包装用塑料达到环保要求。 相似文献
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2002年10月27日—11月9日,我率团访问了法国阿尔萨斯发展署。随团访问的有机械工业联合会国际合作部、湘潭电机厂、湖南开关厂、正泰电器厂的有关同志。本次出访主要是应法国阿尔萨斯发展署要求,与其探讨推动双方机械企业合作的可能性。访问期间,我们同时考察了法、德两国的有关企业。1.关于阿尔萨斯及阿尔萨斯发展署的简况。此次出访,我们会见了法国阿尔萨斯发展署署长安德烈·克莱恩先生,并听取了法国阿尔萨斯发展署ChristianBESTIEN先生关于阿尔萨斯及阿尔萨斯发展署的简况介绍。法国阿尔萨斯大区地处法、德交界处… 相似文献
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中国在全生物降解聚乳酸(PLA)塑料阻燃技术开发上取得突破。近日石家庄金迪化工科技有限公司宣布,全生物降解PLA塑料添加了该公司新研发的阻燃母料后,具有良好的耐热、难燃和低烟雾性能。这种阻燃PLA母料采用经过特殊表面处理的超细无机粉体与硅系阻燃剂协效后共混,通过大长径比平行双螺杆挤出机挤出造粒,外观光滑,有着冰块一般的光泽度。这项阻燃技术的开发将提升聚乳酸的使用性能,为PLA生物降解塑料扩大应用领域创造了条件。 相似文献
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现如今,塑料工业快速发展,塑料制品使用泛滥,因塑料具有不可生物降解的缺陷,其造成的“白色污染”就对人们的生活和生产环境产生了极大危害。本文提出一种以植物纤维为原料制备纸基生物可降解塑料的思想,通过实验表明纸基生物可降解塑料具有良好的生物可降解性能。塑料是一种合成的高分子化合物,因其制作简单,造价低廉,使用方便而受到商家及买家的亲昧,造成目前塑料制品广泛使用,其不利影响也慢慢显现出来:数量大、处理难、回收成本高、危及野生动物的生存等。目前,开发和应用生物可解解塑料是学者研究的重点方向,而生物可降解塑料原料和制备工艺限制了生物可降解塑料价格、可降解性能和物理性能的提高,因此本文提出一种用植物纤维纸张制备可生物降解塑料的方法,经济性高,有效解决可降塑料的生物可降解性能和物理性能的不足。 相似文献
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Sugar is often thought of as an inexpensive source of calories. This is not true, however, when the energy to refine the sugar is added to the agricultural energy. In fact, substitution of less than half of our sugar calories by those from a grain product such as wheat flour would result in a noticeable energy saving in the US food system. 相似文献
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Kabir-ur-Rahman Khan 《Food Policy》1978,3(2):104-113
The 1977 International Sugar Agreement is one of several contemporary agreements designed to regulate the international market in specific commodities. A commodity agreement at the same time serves as an instrument through which nations international policies are carried out, and defines the rights and duties characterizing the relations between importing and exporting countries. The author examines the 1977 International Sugar Agreement in this context, discussing its regulatory mechanisms, its relation with the ‘New International Economic Order’ and the extent to which the interests of both importers and exporters are protected. 相似文献
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《Food Policy》2019
In theory, learning from past mistakes should result in adapted and improved development policy. However policy learning can be difficult to achieve, and the link between learning and policy change is neither direct nor immediate. In this study we look at learning in agro-industrial policy in Ghana, by tracing the interest in sugar production and tomato processing over six decades. Specifically we ask why four failed factories established in the early 1960s have continued to play central roles in both policy and public discourse. Using policy documents, academic material, and the popular press, we show that Ghana’s policy focus on sugar production and tomato processing has endured, despite the fact that the factories were misconceived, poorly sited, ill-equipped and poorly managed. Indeed, the political ideas that underpinned the establishment of these factories in the early days of independence can be seen in the current One District, One Factory policy. We suggest that it is their symbolic and political value, not their economic value, which keeps the discussion around these factories alive. Even when shut down, they are a physical manifestation of historic commitments by the state, and as such they guarantee the attention of politicians, and hold out hope of a next re-launch. Unfortunately as long as the factories continue to be incorporated into each new generation of agro-industrial policy, it is difficult for any alternatives to gain traction. This analysis highlights the very long overhang of bad decisions, particularly when they are associated with physical infrastructure. Learning from past mistakes will only happen if the short-term political cost of turning policy learning into policy action can be overcome. 相似文献