Views: 5 Author: Site Editor Publish Time: 2020-04-09 Origin: Site
Plastic products have brought great convenience to people's lives, but after a large number of plastic products are used and discarded, environmental problems caused by improper disposal have become a hot spot of global concern. At present, there are 120 million tons of disposable plastic products in the world every year, only 10% is recycled, the other 12% is incinerated, and more than 70% is discarded into the soil, air and ocean.
Biodegradable plastic refers to a type of plastic that meets the requirements for use during the storage period, and can be degraded into environmentally sound substances under natural environmental conditions after use. It is considered to be one of the effective ways to solve the problem of plastic pollution. , Has attracted everyone's attention in recent years.
my country's biodegradable plastics are still in the early stages of industrialization. At present, there are many types of biodegradable plastics on the market, and there are large differences in product performance and production capacity. In order to promote the understanding and understanding of my country's biodegradable plastics industry, this article combs and analyzes the product classification and market conditions, and the performance comparison of typical biodegradable plastics, in order to provide references for personnel in related industries. To
At present, biodegradable plastics can be divided into bio-based and petrochemical-based based on the source of raw materials. Biodegradable plastics include polylactic acid (PLA), polyhydroxy fatty acid ester polymers (PHAs), starch-based, cellulose, etc.; petrochemical-based degradable plastics include dibasic acid glycol copolyester series (polybutylene Butylene diacid (PBS), polyadipate/butylene terephthalate (PBAT), carbon dioxide copolymer (PPC), polycaprolactone (PCL), polyglycolic acid (PGA), etc.
Among them, bio-based starch-based degradable plastics belong to the first generation of degradable plastics. Because they cannot be completely degraded, they are currently being gradually eliminated. At present, industrialized scale production is formed in the Chinese market, and the main players that occupy a large market share are PBAT, PBS, PLA, etc. To
In terms of the specific use of various types of degradable plastics, PBAT/PBS series products are mainly used in packaging, tableware, cosmetic bottles and medicine bottles, disposable medical supplies, agricultural films, pesticides and fertilizer slow-release materials.
2.2 Supply and demand situation
2.2.1 Supply situation
The global degradable plastics are generally in the initial stage of industrialization, and China's production capacity has increased significantly. In 2019, the production capacity of mainstream biodegradable plastics in my country is about 370,000 tons, and the output is about 260,000 tons. The PLA production capacity is about 130,000 tons/year. Due to technical reasons or lack of raw material lactide, some PLA devices cannot operate stably or are in shutdown. The actual effective production capacity is about 48,000 tons/year, and the output is about 18,000 tons/year.
The main production companies include Zhejiang Hisun Biotechnology and Anhui Fengyuan Group. The production capacity of the PLA project under construction is about 80,000 tons/year, and the long-term planned production capacity is about 1.2 million tons/year; the production capacity of PBS/PBAT is about 240,000 tons/year. Because the production technology of petrochemical-based products is relatively mature, it can basically achieve full capacity In operation, the output is basically the same as the production capacity, about 240,000 tons.
The largest domestic PBS/PBAT manufacturers include Kingfa Technology and Xinjiang Lanshan Tunhe. The total production capacity of PBS/PBAT under construction is about 687,000 tons/year, and the long-term planned production capacity is about 1.5 million tons/year. Since 2020, domestic coal-based PGA products have also entered the market, which has attracted much attention. To
2.2.2 Demand situation
In recent years, with the gradual implementation of domestic bans and restrictions on plastics, the market demand for degradable plastics has been increasing at an increasing rate. In the past five years, the average growth rate of my country's biodegradable plastic consumption has been around 20%. In 2019, due to output restrictions, the domestic consumption of biodegradable plastics is basically the same as the output, and the consumption is about 260,000 tons.
According to this growth rate, it is estimated that by 2024, my country's demand for biodegradable plastics will exceed 650,000 tons. Considering that the domestic "plastic limit" policy has been intensively introduced since 2019 and gradually implemented, the growth rate of the market demand for degradable plastics will further increase, and it is expected to exceed one million tons in 2024.