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Fully-biodegradable high-barrier polyamide-based composite film material and preparation method thereof

A polyamide-based and biodegradable technology is applied in the field of completely biodegradable high-barrier polyamide-based composite film materials and their preparation, and can solve the problem of uneven product opaque color, poor processing fluidity of polymer plastics, and excessive crystal points. and other problems, to achieve the effect of low price, good processability and good biodegradability

Inactive Publication Date: 2019-01-11
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing fluidity of polymer plastics added with montmorillonite becomes poor, and the crystal points are too many and uneven, which often leads to the disadvantages of opaque and poor color of the processed products.

Method used

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  • Fully-biodegradable high-barrier polyamide-based composite film material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) each component is by mass ratio

[0027] Nylon 9: 95 parts;

[0028] Starch-based resin: 4.79 parts;

[0029] Polyvinyl alcohol (molecular weight 10000, degree of alcoholysis 98): 0.1 part;

[0030] Polyol oligomer plasticizer: 0.1 part;

[0031] Antioxidant 1098: 0.01 part;

[0032] Mix well with a high-speed mixer, and dry in vacuum at 80°C for 12 hours.

[0033] 2) Use a twin-screw extruder to extrude and granulate the blend, and set the temperature of each heating section as follows: the first section is 220°C, the second section is 240°C, the third section is 260°C, and the fourth section is 280°C , 300°C in the fifth section.

[0034] 3) Vacuum drying the granulated completely biodegradable high-barrier polyamide-based composite material at 50° C. for 24 hours to make the moisture content ≤ 0.1 wt % to obtain a fully biodegradable high-barrier polyamide-based composite material masterbatch.

[0035] 4) Use multi-layer co-extrusion blown film equipment to ...

Embodiment 2

[0037] 1) each component is by mass ratio

[0038] Nylon 10: 90 parts;

[0039] Cellulose: 2.99 parts;

[0040] Polyvinyl alcohol (molecular weight 50000, degree of alcoholysis 98): 5 parts;

[0041] Chlorine compound plasticizer: 2 parts;

[0042] Antioxidant 1010: 0.01 parts;

[0043] Mix well with a high-speed mixer, and dry in vacuum at 80°C for 12 hours.

[0044] 2) Use a twin-screw extruder to extrude and granulate the blend, and set the temperature of each heating section as follows: the first section is 250°C, the second section is 270°C, the third section is 290°C, and the fourth section is 310°C , 330°C in the fifth section.

[0045] 3) Vacuum-dry the granulated fully biodegradable high-barrier polyamide-based composite material at 80° C. for 12 hours to make the moisture content ≤ 0.1 wt % to obtain a fully biodegradable high-barrier polyamide-based composite material masterbatch.

[0046] 4) Use multi-layer co-extrusion blown film equipment to blow the master...

Embodiment 3

[0048] 1) each component is by mass ratio

[0049] Nylon 11: 65 parts;

[0050] Starch-based resin: 5 parts;

[0051] Cellulose: 2.8 parts;

[0052] Polyvinyl alcohol (molecular weight 100000, degree of alcoholysis 98.2): 20 parts;

[0053] Amide plasticizer: 2 parts;

[0054] Antioxidant 245: 0.2 parts;

[0055] Mix well with a high-speed mixer, and dry in vacuum at 80°C for 12 hours.

[0056] 2) Use a twin-screw extruder to extrude and granulate the blend, and set the temperature of each heating section as follows: the first section is 150°C, the second section is 160°C, the third section is 170°C, and the fourth section is 180°C , 190°C in the fifth section.

[0057] 3) Vacuum drying the granulated completely biodegradable high-barrier polyamide-based composite material at 50° C. for 24 hours to make the moisture content ≤ 0.1 wt % to obtain a fully biodegradable high-barrier polyamide-based composite material masterbatch.

[0058] 4) Use multi-layer co-extrusion blown...

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Abstract

The invention discloses a fully-biodegradable high-barrier polyamide-based composite film material and a preparation method thereof. The composite film material contains 50-95 parts of a biomass polyamide material, 0.1-25 parts of an independent carbon source donor material and 0.1-40 parts of polyvinyl alcohol. Compared with conventional inorganic filling barrier materials, the barrier material disclosed by the invention has the advantages of being low in price, good in barrier performance, good in biodegradability and processability and easy to be accepted by the market.

Description

technical field [0001] The invention relates to a fully biodegradable high-barrier polyamide-based composite film material and a preparation method thereof. Background technique [0002] In recent years, the development of polymer packaging materials with high barrier to gas or solvent permeation has attracted increasing attention. Among polymer materials, some raw materials have better barrier properties. For example: EVOH, PVDC, PVA, PA, etc. Among them, PA has good non-polar gas and hydrocarbon solvent barrier properties. Compared with PA, EVOH resin, which has better oxygen permeability barrier properties, reduces its original market application advantages due to its high price and easy moisture absorption. In order to reduce the cost of barrier resins while maintaining good barrier properties, many researchers have used nano-filled polymers with larger surface areas and aspect ratios in recent years. These polymer nanosheet materials show better barrier properties th...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L77/06C08L29/04C08L3/02C08L1/02C08L89/00C08L67/04C08L67/02C08L67/00C08L69/00C08J5/18B29B9/06B29C55/28
CPCB29B9/06B29C55/28C08J5/18C08J2377/02C08J2377/06C08J2400/16C08J2401/02C08J2403/02C08J2427/02C08J2429/04C08J2467/04C08J2469/00C08J2477/06C08J2489/00
Inventor 王大威钟志勇杨豪杰陈尚良吴江渝郑华明曾小平
Owner WUHAN INSTITUTE OF TECHNOLOGY
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