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Biodegradable material as well as raw material composition, preparation method and application thereof

A technology of biodegradable materials and raw material compositions, which is applied in the fields of application, devices for catching or killing insects, animal husbandry, etc., and can solve the problem that the biomass material hemicellulose is not widely used, the cost is high, and the insect traps are not widely used. Raw materials are not easy to degrade, etc.

Inactive Publication Date: 2020-10-30
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a biodegradable material in order to overcome the defects that the raw materials of the insect traps in the prior art are not easy to degrade in nature, and the cost is high; and the biomass material hemicellulose has not been widely used. , its raw material composition and its preparation method and application

Method used

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  • Biodegradable material as well as raw material composition, preparation method and application thereof
  • Biodegradable material as well as raw material composition, preparation method and application thereof
  • Biodegradable material as well as raw material composition, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Preparation of wood hemicellulose: take 250g of wood, wash it, crush it, cook it at 135°C for 30min, filter, and collect the filter residue; use 500g of NaOH aqueous solution with a concentration of 10g / dL to extract the obtained filter residue, and the extraction temperature is 80°C , the leaching time is 2h, filter after leaching, take the filtrate, neutralize the pH of the filtrate to 7 with 6mol / L hydrochloric acid, and centrifuge for 20min at a speed of 3000r / min to obtain precipitate A; Soak in 95% ethanol water solution by volume, and centrifuge for 20 minutes at a speed of 3000 r / min to obtain a muddy sediment for later use, that is, wood hemicellulose.

[0073] The raw material composition of the biodegradable material is added into a high-speed mixer for mixing, then added into a parallel twin-screw extruder, extruded and granulated to obtain the biodegradable material. The temperatures of the parallel twin-screw extruder from zone one to zone six are 180°C, 1...

Embodiment 2

[0078] Preparation of wood hemicellulose: take 250g of wood, wash it, crush it, cook it at 135°C for 30min, filter, and collect the filter residue; use 500g of NaOH aqueous solution with a concentration of 10g / dL to extract the obtained filter residue, and the extraction temperature is 80°C , the leaching time is 2h, filter after leaching, take the filtrate, neutralize the pH of the filtrate to 7 with 6mol / L hydrochloric acid, and centrifuge for 20min at a speed of 3000r / min to obtain precipitate A; Soak in 95% ethanol water solution by volume, and centrifuge for 20 minutes at a speed of 3000 r / min to obtain a muddy sediment for later use, that is, wood hemicellulose.

[0079] The raw material composition of the biodegradable material is added into a high-speed mixer for mixing, then added into a parallel twin-screw extruder, extruded and granulated to obtain the biodegradable material. The temperatures of the parallel twin-screw extruder from zone one to zone six are 130°C, 1...

Embodiment 3

[0084] Cotton stalk hemicellulose preparation: 250g cotton stalks were washed and crushed, steamed at 135°C for 30min, filtered, and the filter residue was collected; the filter residue was extracted with 500g of NaOH aqueous solution with a concentration of 10g / dL, and the extraction temperature was 80°C, the leaching time is 2h, filter after leaching, take the filtrate, neutralize the pH of the filtrate to 7 with 6mol / L hydrochloric acid, and centrifuge at a speed of 3000r / min for 20min to obtain Precipitate A; Precipitate A Soak in 750g of 95% ethanol water solution by volume, and centrifuge for 20min under the condition of rotating speed of 3000r / min when there is no precipitation, to obtain muddy sediment for later use, namely cotton straw hemicellulose.

[0085]The raw material composition of the biodegradable material is added into a high-speed mixer for mixing, then added into a parallel twin-screw extruder, extruded and granulated to obtain the biodegradable material. ...

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Abstract

The invention discloses a biodegradable material as well as a raw material composition, a preparation method and application thereof. The raw material composition of the biodegradable material comprises the following components in parts by weight: 100 parts of poly (butylene adipate-co-terephthalate), 12.5-100 parts of polylactic acid, 12.5-125 parts of hemicellulose and 2.5-37.5 parts of an auxiliary agent, wherein the auxiliary agent comprises the following components in parts by weight: 0.625-5 parts of a crosslinking agent, 1.25-20 parts of a plasticizer and 0.625-7.5 parts of a lubricant,and the crosslinking agent is one or more of dicumyl peroxide, benzoyl peroxide and 2, 5-dimethyl-2, 5-di-tert-butyl hexane peroxide. The biodegradable material and the biodegradable product preparedby the invention can be completely degraded by microorganisms in the nature and do not pollute the environment; the hemicellulose is added into the biodegradable resin, so that the cost is reduced, and the mechanical property of the product is improved; and the application of the hemicellulose is expanded.

Description

technical field [0001] The invention specifically relates to a biodegradable material, its raw material composition, its preparation method and application. Background technique [0002] Small pests such as thrips, whitefly, aphids and liriomyza have always been the main pests on vegetables, flowers and important economic crops. Their tiny individuals, fast reproduction speed, hidden activities and wide host range are extremely harmful to crops. As an important physical pest control product, the insect trap has been widely used in the monitoring and control of pests in the production of vegetables, flowers, and forest fruits following the concept of green, safe, and environmentally friendly plant protection. The use of insect traps effectively reduces the use of chemical pesticides, delays the development of pest resistance, reduces pesticide residues in the environment and in fruits and vegetables, and improves food quality and quality. [0003] The base material used in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L5/14C08K5/14A01M1/14
CPCA01M1/145A01M2200/012C08L67/02C08L2201/06C08L2205/02C08L2205/03C08L67/04C08L5/14C08K5/14
Inventor 施晓旦翟艳荣金霞朝
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD
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