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Lignin/PVC film and preparation method therefor

A PVC film and lignin technology, applied in the field of lignin/PVC film and its preparation, can solve the problems of environmental pollution, waste of resources, etc., and achieve the effect of good toughness and cost reduction

Inactive Publication Date: 2018-12-07
JINING MING SHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to statistics, more than 95% of lignin is still used as industrial pulping waste, which is directly discharged into rivers with wastewater or burned after concentration. The discharge of pulping wastewater not only causes waste of resources, but also pollutes the environment. Good resource utilization has practical significance to the development of social economy and environmental protection

Method used

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  • Lignin/PVC film and preparation method therefor
  • Lignin/PVC film and preparation method therefor
  • Lignin/PVC film and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A lignin / PVC film comprising the following components in parts by weight: thermoplastic PVC 70 parts, lignin 10 parts, compatibilizer (maleic anhydride grafted EVA) 5 parts, calcium zinc stabilizer 5 parts, Plasticizer (epoxidized soybean oil) 5 parts, lubricant (stearic acid) 5 parts.

[0030] The preparation method of the lignin / PVC film of the present invention includes the following steps:

[0031] (1) Drying, crushing and sieving the lignin in the black liquor of papermaking to obtain 300 mesh lignin powder;

[0032] (2) Put the thermoplastic PVC, lignin, calcium zinc stabilizer, compatibilizer (maleic anhydride grafted EVA), plasticizer (epoxy soybean oil), lubricant (stearic acid) in proportion to Heat and mix in the mixer for 30 minutes, mix and stir at high speed until the material temperature reaches about 125°C, quickly put the material in the cold mixing pot to cool, and cool to about 40°C to obtain the initial mixed material;

[0033] (3) Add the initially mixed m...

Embodiment 2

[0036] A lignin / PVC film comprising the following components in parts by weight: thermoplastic PVC 60 parts, lignin 20 parts, compatibilizer (maleic anhydride grafted EVA) 5 parts, calcium zinc stabilizer 5 parts, Plasticizer (epoxidized soybean oil) 5 parts, lubricant (stearic acid) 5 parts.

[0037] The preparation method of Example 2 is the same as that of Example 1.

Embodiment 3

[0039] A lignin / PVC film comprising the following components in parts by weight: 50 parts by weight of thermoplastic PVC, 30 parts of lignin, 5 parts of compatibilizer (maleic anhydride grafted EVA), 5 parts of calcium and zinc stabilizer, Plasticizer (epoxidized soybean oil) 5 parts, lubricant (stearic acid) 5 parts.

[0040] The preparation method of Example 3 is the same as that of Example 1.

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Abstract

The invention discloses a lignin / PVC film. The lignin / PVC film comprises the following ingredients in parts by weight: 30-90 parts of thermoplastic plastic PVC, 10-60 parts of lignin, 1-5 parts of calcium-zinc stabilizer, 2-10 parts of plasticizer, 2-10 parts of compatibilizer and 1-5 parts of lubricant. A preparation method for the lignin / PVC film comprises the steps: proportionally adding all raw material reagents into a high-speed mixer, and carrying out hot mixing and cool mixing, so as to obtain a primary-mixed material; subjecting the primary-mixed material to melt extrusion granulatingby a twin-screw extruder; and treating granules by using a single-screw blow molding machine, thereby obtaining the lignin / PVC film. The lignin / PVC film disclosed by the invention is non-toxic and harmless, is in line with environmental requirements, is uniform in thickness and level and smooth in surface and has the advantages of good toughness, tension resistance, difficulty in rupture, and thelike.

Description

Technical field [0001] The invention relates to the field of PVC films, in particular to a lignin / PVC film and a preparation method thereof. Background technique [0002] Existing conventional PVC film materials are made of PVC, non-toxic plasticizers, stabilizers and other additives as components, mixed by a blender, and then prepared by a blow molding process, but their toughness, ductility, etc. Room for improvement. [0003] According to statistics, more than 95% of lignin is still used as industrial pulping waste. It is directly discharged into rivers or burned after being concentrated. The discharge of pulping wastewater not only wastes resources, but also pollutes the environment. Good resource utilization is of practical significance to social economic development and environmental protection. [0004] Similar to plant fibers, lignin contains hydrophilic groups. Generally, acid anhydride compatibilizers are used to react with the hydroxyl groups of lignin to increase its co...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L97/00C08L91/00C08L91/06C08L51/06C08K5/09C08K5/103C08K5/11C08K5/20
CPCC08J5/18C08J2327/06C08J2451/00C08J2451/06C08J2491/00C08J2491/06C08J2497/00C08L27/06C08L97/005C08L2205/03C08L2205/035C08L51/003C08L91/00C08K5/09C08L51/06C08K5/11C08K5/20C08L91/06C08K5/103
Inventor 施晓旦姜秀梅邵威
Owner JINING MING SHENG NEW MATERIALS CO LTD