On December 9, 2015, CCTV "Oriental Space-Time" reported: Jiangsu Zhongke Jinlong Chemical Co., Ltd. uses carbon dioxide to process a fully biodegradable mulch, which can be gradually degraded in 70 days. The wide application of environmentally friendly new mulch is of great significance to environmental protection!

      First, let's take a look: what will happen to traditional mulch film after long-term use?

      How do you feel when you see this scene? This is the status quo of the use of mulch film for agricultural land in China today. The land we depend on is heavily polluted by traditional mulch film fragments and cannot grow crops. As the number of agricultural land available for planting decreases, it has seriously affected people's production and life!

      The reason: after these ordinary mulch films are used, there is always a part of the broken mulch film that cannot be cleaned up and stays in the soil. The remaining mulch film cannot rot and decompose. It accumulates more and more year after year, which not only causes great difficulties for field management, but also Moreover, the deep structure of the soil is severely damaged, which makes the permeability of the soil worse, hinders the growth of crops, and is beneficial to the activities of harmful bacteria, which reduces the yield of crops. Most of the mulch removed by farmers cannot be processed. It is piled up in the field or in front of and behind the house. It is scattered everywhere on windy days. Like other white pollution, it threatens the production and living environment. Some farmer friends simply burn the mulch that has been cleared out of the farmland, and the burning flue gas contains a large amount of mixed toxic gases such as carbon monoxide, plastic thermal medium gas and sulfide, which is extremely harmful to the human body.

      China is a big agricultural country. As traditional mulch cannot be quickly and naturally degraded, many arable land has been seriously polluted and can no longer be used. How to solve this problem economically and effectively is urgent!

      Jiangsu Zhongke Jinlong Chemical Co., Ltd. uses waste carbon dioxide** to newly develop a fully biodegradable material-TPU masterbatch to produce degradable mulch film after processing. The mulch film produced by this masterbatch has passed the field experiment of Xinjiang Construction Corps for 70 days It can be degraded gradually, which is indeed a good news to the majority of agricultural growers.

The CO2-based biodegradable material-barrier TPU masterbatch developed by Jiangsu Zhongke Jinlong Chemical Co., Ltd. is put into production by adding, without changing the production equipment, the traditional process can produce a large number of environmentally friendly mulch films with degradable functions. The mulch film produced by it can be gradually degraded in about 70 days, so that the mulch film has no difference with ordinary mulch film when used; when it is discarded, it does not need to be recycled and has no effect on the growth of crops. After turning into the soil, the mulch film is decomposed by microorganisms and bacteria. Biodegradable, no need for manual film collection! It is cheap and simple, convenient and practical, and mass production can be achieved without changing the production equipment. Plastic film manufacturers are welcome to discuss cooperation!

CO2-based biodegradable material-barrier TPU

1. Product performance and technical indicators:

Density (g/cm3): GB1033-2008 1.14

Tensile strength of raw materials (Kg/cm2): GB/T1040-2006 ≥10

Shore hardness A: GB/T 2411-2008 60-90

Tensile strength of film (N/mm2): GB/T10403-2006 28.3/35

Elongation at break (%): GB/T10403-2006 200/370

WVTR water vapor transmission rate (g/m2/day): ASTM F1249-90 ＜36.0

OTR oxygen transmission rate (cc/ m2/day): ASTM D3985-95 ＜110.0

Two, comprehensive characteristics:

1. Excellent impact strength

2. Good printing performance and bonding performance

3. Good stability

4. Full biodegradability

5. Higher hardness

Three, storage and transportation requirements:

Store and transport away from light and below 50℃.

Four, application areas:

1. It can produce industrial packaging film;

2. It can be used as a toughening agent for engineering plastics and rubber materials;

3. It can be used as a hot melt and glue-linking agent;

4. It can be blended with other biodegradable materials, starch and inorganic fillers to produce biodegradable films, shopping bags, garbage bags and other products;

5. It can be used as sieve plates, elastic linings, conveyor belts, rubber rollers, rubber tires, shoe soles, various hoses and hard tubes.

Five, detailed description and precautions:

1. Thermoplastic elastomer TPU synthesized with CO2-based polyol is made by chain extension reaction of polypropylene carbonate polyol, MDI and 1,4-butanediol.

2. It is recommended to use blow molding or multi-layer co-extrusion blown film process for barrier TPU.

3. The temperature setting trend from the feeding start to the head temperature during blow molding: 150-184℃. When multi-layer co-extrusion, the end temperature of the material layer should not be lower than 180℃.