Yizheng Chemical Fiber develops degradable PBAT agricultural mulch film

On May 9, the Research Institute of Sinopec Yizheng Chemical Fiber Company announced that Yizheng Chemical Fiber's agricultural mulch film made of biodegradable plastic-polybutylene terephthalate-copolybutylene adipate (PBAT) has been Crop planting experiments are carried out in many places in China
.

At present, the output and coverage of agricultural film in China ranks first in the world.
Agricultural film has become the third largest agricultural production material after chemical fertilizers and pesticides, and is known as the third agricultural technology revolution after improved seeds and chemical fertilizers
.
However, the vast majority of agricultural films are non-degradable plastics, and the residual film accumulated in the farmland for many years pollutes the agricultural environment, resulting in the decline of soil quality, inhibiting the growth and development of crops, and reducing yields by 15% to 30%
.
The development of degradable and environmentally friendly ecological agricultural film is of great significance to the sustainable development of agriculture
.

Yizheng Chemical Fiber has formed a process technology and product formula for biodegradable materials with independent intellectual property rights through years of joint research and development of production, education and research.
Diol ester (PBST), PBAT, polybutylene succinate and copolybutylene adipate (PBSA) have been industrially produced in 10,000-ton units
.
On the basis of its own patent "a long-chain branched aliphatic-aromatic copolyester and its preparation method", Yizheng Chemical Fiber devotes itself to the development of PBAT series products based on the application of various needs of the market and downstream users
.

According to Dai Junming, a senior expert in Yizheng Chemical Fiber Chemical Technology, the agricultural mulch film developed by the Yizheng Chemical Fiber biodegradable material R&D team has been planted in Liaoning Rice, Shandong Shouguang Vegetable, Guizhou Corn Experimental Base, etc.
And other biodegradable tourist supplies are also in the experimental stage
.

Yizheng chemical fiber biodegradable PBAT has been used in large supermarket plastic bags and other fields
.
In September 2021, Sinopec donated 100,000 Yijie brand degradable plastic bags to Zhangshanying Town, where the Yanqing competition area of ​​the Winter Olympics is located.
Services and civic life needs
.

The melt index of PBAT is a key indicator that downstream users care about.
The lower the melt index, the more stable the modification and film production process, and the higher the strength of the later products, which are more durable
.
After several breakthroughs and improvements, Yizheng Chemical Fiber successfully developed and produced PBAT, a biodegradable material with high quality and low melt index in the middle and late April of this year.
The index can be freely adjusted to meet the needs of different users
.

In the next step, Yizheng Chemical Fiber will accelerate the construction of new biodegradable materials as a key task, strengthen technical research, improve production capacity, and expand markets such as agricultural mulch
.