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Special material for preparing full-biodegradable mulching film, full-biodegradable mulching film prepared from special material and preparation method of mulching film

A degradable mulch film and all-biological technology, applied in the field of fully biodegradable agricultural films, can solve the problems of poor compatibility, poor weather resistance of products, and failure to meet production needs, etc., to achieve the effect of meeting the growth cycle, easy industrial production, and simple production process

Inactive Publication Date: 2020-12-11
新疆蓝山屯河高端新材料工程技术研究中心有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, most of the degraded mulch films are made of PBAT and PLA, but currently only the PLA produced by Natureworks in the United States can meet the production requirements of degradable mulch films. In recent years, due to the technical blockade and product monopoly of the United States, the PLA market is in short supply.
PLA can no longer meet the domestic market demand, so it is imminent to seek a raw material that can replace PLA
Although PBS has high mechanical strength, the compatibility between PBS and PBAT is poor, and the weather resistance of the product is poor. It cannot meet the production needs when used in the preparation of plastic film.

Method used

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  • Special material for preparing full-biodegradable mulching film, full-biodegradable mulching film prepared from special material and preparation method of mulching film
  • Special material for preparing full-biodegradable mulching film, full-biodegradable mulching film prepared from special material and preparation method of mulching film
  • Special material for preparing full-biodegradable mulching film, full-biodegradable mulching film prepared from special material and preparation method of mulching film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Example 1: This example discloses a method for preparing a fully biodegradable mulch film. The preparation method is as follows:

[0071] 1. Synthesis of fully biodegradable plastic film modifier

[0072] (1) Heat treatment of talc powder and nano-active calcium carbonate: bake talc powder and activated calcium carbonate at 105°C for 3 hours, then cool down to 58°C for 2 hours.

[0073] (2) Make black masterbatch: black masterbatch is extruded and granulated according to the ratio of carbon black and PBAT at 1:6.

[0074] (3) Heat drying and dehydration: heat drying PBAT, PPC, and color masterbatch at 58°C for 3 hours.

[0075] (4) Material mixing: 63.1 parts by weight of PBAT, 15 parts by weight of PBS, 3 parts by weight of PPC, 3 parts by weight of talcum powder, 5 parts by weight of nano-active calcium carbonate, 1 part by weight of liquid paraffin, 0.5 parts by weight of antioxidant 168, 6 parts by weight of black masterbatch, 0.6 parts by weight of UV326, 0.7 par...

Embodiment 2

[0082] Example 2: This example discloses a method for preparing a fully biodegradable mulch film. The preparation method is as follows:

[0083] 1. Synthesis of fully biodegradable plastic film modifier

[0084] (1) Heat treatment of talc powder and nano-active calcium carbonate: bake talc powder and activated calcium carbonate at 105°C for 3 hours, then cool down to 58°C for 2 hours.

[0085] (2) Make black masterbatch: black masterbatch is extruded and granulated according to the ratio of carbon black and PBAT at 1:6.

[0086] (3) Heat drying and dehydration: heat drying PBAT, PPC, and color masterbatch at 58°C for 3 hours.

[0087] (4) Material mixing: 68.1 parts by weight of PBAT, 10 parts by weight of PBS, 3 parts by weight of PPC, 3 parts by weight of talcum powder, 5 parts by weight of nano-active calcium carbonate, 1 part by weight of liquid paraffin, 0.5 parts by weight of antioxidant 168, 6 parts by weight of black masterbatch, 0.6 parts by weight of UV326, 0.7 par...

Embodiment 3

[0094] Embodiment 3: A kind of preparation method of fully biodegradable plastic film, preparation method is as follows:

[0095] 1. Synthesis of fully biodegradable plastic film modifier

[0096] (1) Heat treatment of talc powder and nano-active calcium carbonate: bake talc powder and activated calcium carbonate at 105°C for 3 hours, then cool down to 58°C for 2 hours.

[0097] (2) Make black masterbatch: black masterbatch is extruded and granulated according to the ratio of carbon black and PBAT at 1:6.

[0098] (3) Heat drying and dehydration: heat drying PBAT, PPC, and color masterbatch at 58°C for 3 hours.

[0099] (4) Material mixing: 58.1 parts by weight of PBAT, 20 parts by weight of PBS, 3 parts by weight of PPC, 3 parts by weight of talcum powder, 5 parts by weight of nano-active calcium carbonate, 1 part by weight of liquid paraffin, 0.5 parts by weight of antioxidant 168, 6 parts by weight of black masterbatch, 0.6 parts by weight of UV326, 0.7 parts by weight of...

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Abstract

The invention discloses a special material for preparing a full-biodegradable mulching film and the full-biodegradable mulching film. The full-biodegradable mulching film is prepared from the following raw materials: PBAT, PBS, PPC, talcum powder, a lubricant, nano activated calcium carbonate, nano silicon dioxide, black master batch, an ultraviolet absorbent, a light stabilizer, an antioxidant, SMA and a compatilizer. The black master batch is obtained by mixing and granulating carbon black and PBAT in proportion; the preparation method comprises the following steps: mixing the raw materials,uniformly stirring, performing extruding to obtain a special material, and carrying out film blowing on the special material to obtain the fully-degradable mulching film. According to the invention,the raw material PBS is used for replacing PLA, so that the dependence of the product raw material on PLA is reduced, and the strength and weather resistance of the produced biodegradable mulching film meet the production requirements.

Description

technical field [0001] The invention relates to the technical field of fully biodegradable agricultural films, in particular to a high-strength fully biodegradable plastic film reinforced by PBS. Background technique [0002] In the agricultural field of our country, the application of plastic film mulching technology has a huge effect on the significant improvement of productivity and the change of production mode. Film mulching has the functions of increasing temperature and keeping moisture, preventing diseases and insects, and suppressing weeds, which can increase crop yield by 20% to 50%. But at the same time, the widespread application of mulch has brought a series of problems, such as general use of technology and unfavorable recycling, and "white pollution" caused by mulch residue. [0003] First, mulch residue will change the soil structure. Residual film will reduce soil water content, weaken drought resistance, cause secondary salinization, cause soil compaction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L69/00C08L35/06C08L91/06C08K13/06C08K9/00C08K3/34C08K3/26C08K3/36C08K3/04C08J5/18C08J3/22A01G13/02
CPCC08J5/18C08J3/226A01G13/0275C08J2367/02C08J2467/02C08J2469/00C08J2435/06C08J2491/06C08K13/06C08K9/00C08K3/34C08K3/36C08K3/04C08K2201/011C08K2003/265C08K2201/005Y02A40/28
Inventor 陈雷丁建萍罗子辉
Owner 新疆蓝山屯河高端新材料工程技术研究中心有限公司
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