Degradable master batch for BOPP film, preparation method thereof and BOPP film

A masterbatch and film technology, applied in the field of BOPP film degradable masterbatch and its preparation, BOPP film, can solve the problems of non-degradability, ecological damage, environmental pollution, etc.

Pending Publication Date: 2020-12-29
GUANGDONG DECRO FILM NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since PP itself is not degradable, the extensive use of BOPP

Method used

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  • Degradable master batch for BOPP film, preparation method thereof and BOPP film
  • Degradable master batch for BOPP film, preparation method thereof and BOPP film
  • Degradable master batch for BOPP film, preparation method thereof and BOPP film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The degradation masterbatch for BOPP film of the present embodiment comprises the following components in weight percent:

[0028]

[0029]

[0030] Wherein, the polypropylene resin is selected from the isotactic homopolypropylene of the oriented stretchable film grade, and the melt index is 1-25g / 10min; the photodegradation preoxidant is specifically titanium dioxide, and the average particle diameter is 80nm; natural biomass is selected What is used is the powdered natural plant fiber modified by plasticization, with an average particle size of 5 μm; the plasticizer is glycerol; the compatibilizer is PP-g-MAH; the lubricant is stearic acid.

Embodiment 2

[0032] The degradation masterbatch for BOPP film of the present embodiment comprises the following components in weight percent:

[0033]

[0034] Wherein, the polypropylene resin is selected from the syndiotactic homopolypropylene of the oriented stretchable film grade, and the melt index is 1-25g / 10min; the thermal degradation preoxidant is specifically iron stearate, and the average particle diameter is 50nm; natural The biomass is plasticized modified starch with an average particle size of 10 μm; the plasticizer is tributyl citrate; the compatibilizer is PE-g-MAH; the lubricant is stearic acid.

Embodiment 3

[0036] The degradation masterbatch for BOPP film of the present embodiment comprises the following components in weight percent:

[0037]

[0038] Wherein, the polypropylene resin is selected from the syndiotactic homopolypropylene of the oriented stretchable film grade, and the melt index is 1-25g / 10min; the photodegradation oxidant is calcium oxide, and the average particle diameter is 1nm; the thermal degradation preoxidant is Cobalt acetate, with an average particle size of 1nm; the natural biomass is plasticized modified starch, with an average particle size of 0.1μm; the plasticizer is epoxidized soybean oil; the compatibilizer is EVA-g-MAH; The lubricant is polyethylene wax.

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Abstract

The invention relates to a degradable master batch for a BOPP film, a preparation method thereof and a BOPP film. The degradable master batch for a BOPP film comprises the following components in percentage by weight: 45-96.3% of polypropylene resin; 0.2-10% of a pre-oxidant; 1-30% of natural biomass; 1-5% of a plasticizer; 1-5% of a compatilizer; and 0.5-5% of a lubricant; wherein the pre-oxidantis a photo-degradation pre-oxidant and/or a thermal degradation pre-oxidant; the preparation method comprises the steps of raw material mixing and conveying, melt extrusion, granulation and post-treatment. Each layer of the BOPP film is prepared by melting and blending polypropylene and the degradable BOPP film master batch and then biaxially stretching, and the degradable BOPP film master batchaccounts for 0.1-1% of the weight of each layer. According to the degradable master batch for a BOPP film, the prepared BOPP film is degradable, green and environmentally friendly, the thickness of the BOPP film is uniform, film breakage is little, and the problems of fish eyes and crystal points cannot be caused.

Description

technical field [0001] The invention belongs to the technical field of biaxially stretched polypropylene films, in particular to a degradable masterbatch for BOPP films and a preparation method thereof and BOPP films. Background technique [0002] BOPP film is biaxially oriented polypropylene film. The polypropylene melt is first made into a sheet or thick film through a narrow and long machine head, and then synchronously or asynchronously processed in a special double-drawing device at a certain temperature and speed. Stretching in both longitudinal and transverse directions, and finally a film made by proper cooling, heat treatment or special processing (corona, coating, etc.). In order to endow the BOPP film with good processability and application performance, in addition to selecting a good polypropylene resin, it is also necessary to add different types of additives according to the different uses of the product to realize the functionalization of the BOPP film. Thes...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L97/02C08L3/02C08L51/06C08L91/00C08K3/22C08K5/053C08K5/09C08K5/098C08K5/11C08J3/22B32B27/32B32B27/18B32B27/06B32B7/02B32B33/00
CPCC08J3/226B32B27/32B32B27/18B32B27/08B32B7/02B32B33/00C08J2423/12C08J2497/02C08J2403/02C08J2323/12C08K2003/2241C08K5/053C08K5/09C08K5/098C08K5/11C08K2003/2206C08K2003/2296B32B2307/716
Inventor 杨文刚雷炳荣唐虎何文俊
Owner GUANGDONG DECRO FILM NEW MATERIALS
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