Today,
plastics are widely used in various fields of society, bringing great convenience to people's lives. At the same time, because a large number of discarded plastic products are difficult to decompose, it constitutes a serious "white pollution", hindering the progress of society and sustainable economic development. With the increasing emphasis on environmental protection by human beings, the disposal of polymer materials waste A topic has received widespread attention around the world. Therefore, the preparation of environmentally friendly biodegradable plastics to replace traditional plastics, research and development of degradable plastics has become an effective method to control pollution, and degradable plastics have become a hot research direction at home and abroad.
At present, biodegradable plastics mainly include biodegradable plastics, photodegradable plastics, light and biodegradable plastics, and water-degradable plastics. Among them, biodegradable plastics are the most in-depth and widely used.
Biodegradable plastics are a class of plastics that are degraded by the action of microorganisms such as bacteria, molds (fungi) and algae found in nature. The ideal biodegradable plastic is a polymer material that has excellent performance, can be completely decomposed by microorganisms in the environment after being discarded, and is finally inorganicized into an integral part of the carbon cycle in nature.
In addition to natural degradation, biodegradable plastics have the advantages of renewable raw materials and strong adaptability to the body, making them widely used in environmental protection, food containers and packaging, agroforestry, medicine, textiles, electronics, and automobiles.
The application of biodegradable plastics in the high-end market mainly includes medical supplies, drug release materials, and materials for 3D printing. Biodegradable plastics such as PLA, PCL, and PHA have good biocompatibility, and can be controlled by molecular design during synthesis, so they have potential for development in the high-end market.
According to relevant reports, the market demand for biodegradable plastics will increase rapidly in the next few years. It is estimated that by 2020, the global demand for biodegradable plastics will reach 3.22 million tons, and the average annual demand growth rate will exceed 16%.
With the white pollution problem and the growing non-renewable energy crisis, the development and use of biodegradable plastics has become one of the effective ways to alleviate this problem. In today's increasingly scarce petroleum resources, how to effectively use existing resources, save limited resources and open up new alternative petroleum raw materials is an important issue to ensure the sustainable development of China's economy and the future development direction of the plastics industry.
HFCs (hydrofluorocarbons) are the third
generation of fluorine-based gases.
These products are categorised as having zero ODP (Ozone Depleting Potential)
and medium to high GWP (Global Warming Potential) and so offer a more
environmentally friendly alternative to CFCs and HCFCs.
HFCs are used in a wide range of refrigeration and air conditioning equipment
specifically designed for them, and as "drop
in" retrofit gases for older CFC or HCFC equipment. HFCs are also
used in selective propellant and foam blowing
applications.
A growing focus on the environmental
impact of refrigerants is fuelling demand for refrigeration solutions
that can provide satisfactory cooling performance with a lower impact on global
warming. This is propelling environmentally friendly refrigeration solutions to
the top of the corporate sustainability agenda. In addition, local legislation
is increasingly targeting refrigerant gases with high GWP.
Zhejiang Zhonglan Refrigerants Co.,Ltd
offers a number of lower GWP HFC solutions, such as R134a, R404a, R406a, R407c,
R410a, R507,R417a,R422d,R125,R32, etc. For new equipment purchases, we also
supply a wide range of HFC alternatives. These include HC(natural
refrigerants), which provide a viable, lower GWP alternative to HFCs.
HFC Refrigerant Gas
HFC Refrigerant Blends,Freon Refrigeration,Blend Refrigerant Gas,Mixed Refrigerant Gas
ZHEJIANG ZHONGLAN REFRIGERATION TECHNOLOGY CO.,LTD , https://www.uiszl.com