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Full biodegradable mulch material for crops in irrigated area and preparation method and application of full biodegradable mulch material

A technology for degrading mulch and crops, which is applied in the field of fully biodegradable mulch materials for crops in irrigation areas and its preparation, can solve problems such as incomplete degradation, affecting crop growth, and unclear secondary pollution, and achieves improvement in rigidity balance, The effect of low cost and good development prospects

Inactive Publication Date: 2019-08-09
LANZHOU XINYINHUAN RUBBER & PLASTIC PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are that firstly, the degradation is restricted by various factors such as ultraviolet intensity, environmental climate, etc., and secondly, it cannot be completely degraded, and it is not clear whether it will cause secondary pollution
CN201711408963.5, CN201610816248.4 and other patents of photo / bio-degradable mulch film are characterized in that the mulch film is degraded into small particles, which has no obvious negative impact on crop growth in the short term, but as time goes by, the plastic particles in the soil will gradually increase, affecting crop growth

Method used

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  • Full biodegradable mulch material for crops in irrigated area and preparation method and application of full biodegradable mulch material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A fully biodegradable mulch material for irrigation area crops and a preparation method thereof, specifically comprising:

[0022] PBAT, molecular weight 80,000, 100 parts.

[0023] PEF, molecular weight 0.5 million, 5 parts.

[0024] 2-Methyl-2-oxazoline, 0.3 parts.

[0025] Zinc adipate, 0.5 parts.

[0026] Calcium Carbonate, 5 parts, Talc, 5 parts.

[0027] Antioxidant 168, 0.1 part, antioxidant 1010, 0.1 part.

[0028] UV-531, 0.5, UV-234, 0.5 parts.

[0029] Put PBAT and PEF in a desiccator at 60°C respectively, and dry for 6 hours, then add 2-methyl-2-oxazoline, zinc adipate, calcium carbonate, talcum powder, antioxidant 168, antioxidant 1010 , UV-531, UV-234, etc. are weighed according to the proportion, and added to the high mixer together with PBAT and PEF for mixing at a speed of 1000 rpm, and mixed for 2 minutes. Then the mixed material is put into a screw extruder for extrusion granulation, the melt temperature is set at 190° C., and the fully biodegra...

Embodiment 2

[0031] A fully biodegradable mulch material for irrigation area crops and a preparation method thereof, specifically comprising:

[0032] PBAT, molecular weight 80,000, 100 parts. .

[0033] PEF, molecular weight 0.5 million, 10 parts.

[0034] 2-Methyl-2-oxazoline, 0.3 parts.

[0035] Zinc adipate, 0.5 parts.

[0036] Calcium Carbonate, 5 parts, Talc, 5 parts.

[0037] Antioxidant 168, 0.1 part, antioxidant 1010, 0.1 part.

[0038] UV-531, 0.5, UV-234, 0.5 parts.

[0039] Put PBAT and PEF in a desiccator at 60°C respectively, and dry for 6 hours, then add 2-methyl-2-oxazoline, zinc adipate, calcium carbonate, talcum powder, antioxidant 168, antioxidant 1010 , UV-531, UV-234, etc. are weighed according to the proportion, and added to the high mixer together with PBAT and PEF for mixing at a speed of 1000 rpm, and mixed for 2 minutes. Then the mixed materials are put into a screw extruder for extrusion granulation, the melt temperature is set at 190° C., and the horse bi...

Embodiment 3

[0041] A fully biodegradable mulch material for irrigation area crops and a preparation method thereof, specifically comprising:

[0042] PBAT, molecular weight 80,000, 100 parts. .

[0043] PEF, molecular weight 0.5 million, 15 parts.

[0044]2-Methyl-2-oxazoline, 0.3 parts.

[0045] Zinc adipate, 0.5 parts.

[0046] Calcium Carbonate, 5 parts, Talc, 5 parts.

[0047] Antioxidant 168, 0.1 part, antioxidant 1010, 0.1 part.

[0048] UV-531, 0.5, UV-234, 0.5 parts.

[0049] Put PBAT and PEF in a desiccator at 60°C respectively, and dry for 6 hours, then add 2-methyl-2-oxazoline, zinc adipate, calcium carbonate, talcum powder, antioxidant 168, antioxidant 1010 , UV-531, UV-234, etc. are weighed according to the proportion, and added to the high mixer together with PBAT and PEF for mixing at a speed of 1000 rpm, and mixed for 2 minutes. Then the mixed material is put into a screw extruder for extrusion granulation, the melt temperature is set at 190° C., and the fully biode...

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Abstract

The invention relates to a full biodegradable mulch material for crops in an irrigated area and a preparation method and application of the full biodegradable mulch material. The material is preparedfrom poly terephthalic acid-adipic acid-butyl glycol ester, polyethylene furandicarboxylate ester, an aliphatic carboxylic acid zinc compound, a compatibilizer, a filler, an antioxidant and an ultraviolet absorber. The full biodegradable mulch film material has the advantages that PEF with stronger rigidity is used for performing rigidity enhancement and modification on PBAT under the action of the compatibilizer, thereby improving the rigidity of the PBAT and improving the rigidity and toughness balance of the PBAT. In addition, after the aliphatic carboxylic acid zinc compound is added, thephenomenon disappears that modified materials of PBAT and PEF adhere to equipment during membrane blowing processing, the blow-molded mulch has good opening performance, the mechanical properties of the modified material are not affected, and the cost can be greatly reduced through the cooperative use of the inorganic filler; the full biodegradable mulch material has simple processing conditions,excellent mechanical properties, low cost and a good development prospect.

Description

technical field [0001] The invention belongs to the field of plastic film technology, and in particular relates to a fully biodegradable plastic film material for irrigation area crops, a preparation method and application thereof. Background technique [0002] my country's monsoon climate is unstable, and the seasonal distribution and interannual variation of precipitation are large. Many places need water diversion irrigation when developing planting. All areas that need water irrigation to develop agriculture are called irrigated agricultural areas. The irrigated area has become the main commercial grain base and economic crop concentration area in China. In order to improve the yield of crops in irrigated areas, especially commercial crops, plastic film mulching technology is widely used. [0003] Plastic film mulching can avoid soil compaction caused by irrigation or rainwater erosion, reduce the labor of intertillage, and make the soil loose and permeable. It can in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/02C08K5/098C08K3/26C08K3/34C08J5/18A01G13/02
CPCA01G13/0275C08J5/18C08J2367/02C08J2467/02C08K3/34C08K5/098C08K13/02C08K2003/265Y02A40/28
Inventor 赵贵宾秦文生秦体文
Owner LANZHOU XINYINHUAN RUBBER & PLASTIC PROD CO LTD
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