Degradable seedling growing tray with lignin modified PBAT/PLA (poly (butyleneadipate-co-terephthalate)/polylactic acid) as base material and preparation method of degradable seedling growing tray

A technology of lignin and seedling trays, applied in agriculture, cultivation, application and other directions, can solve the problems of increased cost, difficult to popularize and apply, high cost of degradable plastic raw materials, and achieve the effect of reducing dependence and reducing costs

Inactive Publication Date: 2019-01-18
JINING MING SHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plastic trays are not biodegradable and need to be recycled and carefully stored by specialized personnel, resulting in increased management costs
Due to the high cost of degradable plastic raw materials, it is difficult to realize the popularization and application of resin trays
The rice plant plaster is made of rice straw as the main

Method used

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  • Degradable seedling growing tray with lignin modified PBAT/PLA (poly (butyleneadipate-co-terephthalate)/polylactic acid) as base material and preparation method of degradable seedling growing tray
  • Degradable seedling growing tray with lignin modified PBAT/PLA (poly (butyleneadipate-co-terephthalate)/polylactic acid) as base material and preparation method of degradable seedling growing tray
  • Degradable seedling growing tray with lignin modified PBAT/PLA (poly (butyleneadipate-co-terephthalate)/polylactic acid) as base material and preparation method of degradable seedling growing tray

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 A kind of lignin-modified PBAT / PLA is the degradation seedling-raising tray of base material and preparation method thereof, calculated by mass parts, its composition and content are as follows:

[0033]

[0034] Above-mentioned formula reacts according to the following steps:

[0035] (1) First dry a certain amount of lignin and then crush it to 200-300 mesh;

[0036] (2) the above-mentioned lignin, compatibilizer maleic anhydride grafting, heat stabilizer zinc stearate, antioxidant phosphite together with polyadipate / butylene terephthalate, polylactic acid, place In a high-speed blender, mix for 60 minutes at a temperature of 75°C and a rotation speed of 250 rpm to obtain an initial mixture;

[0037](3) Place the above primary mixture in a twin-screw extruder to extrude and granulate. 200rpm to prepare the masterbatch; (4) Put the above-mentioned masterbatch into the molding injection molding machine, press molding at an injection temperature of 165°...

Embodiment 2

[0038] Embodiment 2 A kind of lignin-modified PBAT / PLA is the degraded seedling raising tray of base material and preparation method thereof, calculated by mass parts, its composition and content are as follows:

[0039]

[0040] Above-mentioned formula reacts according to the following steps:

[0041] (1) First dry a certain amount of lignin and then crush it to 200-300 mesh;

[0042] (2) the above-mentioned lignin, compatibilizer maleic anhydride grafting, heat stabilizer zinc stearate, antioxidant phosphite together with polyadipate / butylene terephthalate, polylactic acid, place In a high-speed blender, mix for 60 minutes at a temperature of 75°C and a rotation speed of 250 rpm to obtain an initial mixture;

[0043] (3) Place the above primary mixture in a twin-screw extruder to extrude and granulate. 200rpm to prepare the masterbatch; (4) Put the above-mentioned masterbatch into the molding injection molding machine, press molding at an injection temperature of 165°C,...

Embodiment 3

[0044] Embodiment 3 A kind of lignin-modified PBAT / PLA is the degraded seedling raising tray of base material and preparation method thereof, calculated by mass parts, its composition and content are as follows:

[0045]

[0046] Above-mentioned formula reacts according to the following steps:

[0047] (1) Dry a certain amount of lignin first, and then crush it to 200-300 mesh.

[0048] (2) the above-mentioned lignin, compatibilizer maleic anhydride grafting, heat stabilizer zinc stearate, antioxidant phosphite together with polyadipate / butylene terephthalate, polylactic acid, place In a high-speed blender, mix for 60 minutes at a temperature of 75°C and a rotation speed of 250 rpm to obtain an initial mixture;

[0049] (3) Place the above primary mixture in a twin-screw extruder to extrude and granulate. 200rpm, the masterbatch was prepared;

[0050] (4) Put the above-mentioned masterbatch into a molding injection molding machine, press molding at an injection temperatu...

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Abstract

The invention discloses a degradable seedling growing tray with lignin modified PBAT/PLA (poly (butyleneadipate-co-terephthalate)/polylactic acid) as a base material and a preparation method of the degradable seedling growing tray. The degradable seedling growing tray is prepared by steps as follows: after raw material components are sufficiently mixed, a mixture is extruded and granulated, finally, injection molding is performed by an injection molding machine, and the degradable seedling growing tray is obtained. The degradable seedling growing tray is prepared from raw material components in parts by mass as follows: 30-80 parts of lignin, 5-70 parts of PBAT, 5-60 parts of polylactic acid and 1-10 parts of an auxiliary. According to the degradable seedling growing tray containing ligninmodified PBAT/PLA as the base material and prepared with the method, lignin in a papermaking black liquid can be effectively utilized, waste is recycled, and the environment is protected; meanwhile,the seedling growing tray can be degraded under the natural condition and cannot pollute the environment.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a degradable seedling raising tray with lignin modified PBAT / PLA as the base material and a preparation method thereof. Background technique [0002] In nature, lignin is regenerated at a rate of 50 billion tons per year. The pulp and paper industry separates about 140 million tons of cellulose from plants every year, and at the same time obtains about 50 million tons of lignin by-products, but so far, more than 95% of lignin is still directly discharged into rivers or rivers as "black liquor". It is burned after being concentrated, and is rarely used effectively. Due to the good similarity between lignin structure and degradable plastics, it is determined that lignin can be combined with degradable plastics with a high content, and the cost of lignin-degradable seedling trays is greatly reduced; lignin comes from nature and is Natural polymers can be well degraded un...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L97/00C08L67/04C08L51/00C08K5/098C08K5/524A01G9/029C08J3/22
CPCC08J3/226C08J2367/02C08J2397/00C08J2451/00C08J2467/02C08J2467/04C08J2497/00C08L67/02C08L97/005C08L2201/06C08L2205/02C08L2205/03C08L67/04C08L51/00C08K5/098C08K5/524
Inventor 施晓旦郝鲁峰邵威
Owner JINING MING SHENG NEW MATERIALS CO LTD
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