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Aging-resistant wood-plastic packaging material and preparation method thereof

A packaging material and anti-aging technology, which is applied in the field of wood-plastic packaging materials, can solve the problems of low bonding strength, weak aging resistance, and low affinity, and achieve the effects of improved overall performance, high bonding strength, and improved affinity

Inactive Publication Date: 2018-03-13
SUZHOU YIMU PACKING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing production process of polymer wood-plastic composite materials only pays attention to the mixing or reuse of several materials, and the improvement of basic mechanical properties, without fully considering the compatibility and interface bonding of various materials, interface bonding ability and The diffusion and penetration of various materials at the interface cannot ensure that the plant fibers can be fully dispersed in the polymer resin, and the wood / plastic interface interaction is poor, the affinity between the two is low, and the bonding strength is low. The mechanical properties and other performance properties are low; and the aging resistance is weak, so it cannot be used continuously

Method used

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  • Aging-resistant wood-plastic packaging material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Grind 60 parts of wood fiber to wood powder with a particle size of 80 meshes, add 6 parts of dimethyl sulfate and 20 parts of polyethylene glycol, place in a high-pressure reaction vessel, and react for 40 minutes under a pressure of 4 MPa to obtain a modified wood flour;

[0023] (2) 20 parts of polypropylene particles, 5 parts of basic magnesium sulfate whiskers, 5 parts of cyclophosphamide and 4 parts of p-hydroxypropiophenone were mixed and stirred for 5 minutes; then they were melt blended and granulated through an extruder to obtain modified Polypropylene particles; the extrusion temperature is 160°C, and the screw speed is 30rpm;

[0024] (3) Mix the modified wood powder described in step (1) with the modified polypropylene particles described in step (2), and add 2 parts of azodicarbonamide, 1 part of dicumyl peroxide, 9 parts of 4 -butanediol ester and 15 parts of acrylic acid, stirred and reacted at a temperature of 120° C. for 20 minutes;

[0025] (4) ...

Embodiment 2

[0028] (1) Grind 70 parts of wood fiber to wood powder with a particle size of 120 mesh, add 10 parts of dimethyl sulfate and 30 parts of polyethylene glycol, place in a high-pressure reaction vessel, and react for 30 minutes under a pressure of 8 MPa to obtain a modified wood flour;

[0029] (2) 30 parts of polypropylene particles, 8 parts of basic magnesium sulfate whiskers, 3 parts of cyclophosphamide and 1 part of p-hydroxypropiophenone were mixed and stirred for 10 minutes; then they were melt blended and granulated through an extruder to obtain modified Polypropylene particles; the extrusion temperature is 180°C, and the screw speed is 20rpm;

[0030] (3) Mix the modified wood powder described in step (1) with the modified polypropylene particles described in step (2), and add 4 parts of azodicarbonamide, 3 parts of dicumyl peroxide, 4 parts of 4 -butanediol ester and 20 parts of acrylic acid, stirred and reacted at a temperature of 90° C. for 40 minutes;

[0031] (4) ...

Embodiment 3

[0034] (1) Grinding 62 parts of wood fiber to wood powder with a particle size of 100 meshes, adding 8 parts of dimethyl sulfate and 26 parts of polyethylene glycol, placing them in a high-pressure reaction vessel, and reacting for 35 minutes under a pressure of 6 MPa to obtain a modified wood flour;

[0035] (2) Mix and stir 24 parts of polypropylene particles, 7 parts of basic magnesium sulfate whiskers, 3 parts of cyclophosphamide and 4 parts of p-hydroxypropiophenone for 6 minutes; then melt blend and granulate through an extruder to obtain a modified Polypropylene particles; the extrusion temperature is 168°C, and the screw speed is 22rpm;

[0036] (3) Mix the modified wood powder described in step (1) with the modified polypropylene particles described in step (2), and add 3 parts of azodicarbonamide, 1 part of dicumyl peroxide, 8 parts of 4 -butanediol ester and 17 parts of acrylic acid, stirred and reacted at a temperature of 100° C. for 28 minutes;

[0037] (4) Add ...

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Abstract

The invention discloses a preparation method of an aging-resistant wood-plastic packaging material. The preparation method includes: crushing wood fibers into wood powder with the granularity being 80-120 meshes, adding dimethyl sulfate and polyethylene glycol, and placing into a high-pressure reaction container to perform reaction for 30-40 minutes under the pressure of 4-8Mpa to obtain modifiedwood powder; mixing and stirring polypropylene particles, basic magnesium sulfate whiskers, cyclophosphamide and 4'-hydroxypropiophenone for 5-10 minutes; using an extruder to perform melt blending and granulation to obtain modified polypropylene particles; mixing the modified wood powder and the modified polypropylene particles, adding azodicarbonamide, dicumyl peroxide, 4-butanediol ester and acrylic acid, and performing stirring reaction under 90-120 DEG C for 20-40 minutes; adding the mixture into the extruder, and extruding under the temperature of 175-190 DEG C and the screw rotation speed of 25-45rpm; using a mold to perform compression molding under the temperature of 190-210 DEG C and the pressure of 8-12MPa; cooling to obtain the aging-resistant wood-plastic packaging material.

Description

technical field [0001] The invention belongs to the field of wood-plastic packaging materials, in particular to an aging-resistant wood-plastic packaging material and a preparation method thereof. Background technique [0002] With the acceleration of people's urbanization process, resources such as wood and fossil energy are greatly consumed, and various natural resources will be exhausted day by day. At the same time, people's awareness of environmental protection is gradually increasing, and wood materials are gradually rising. Wood-plastic composite (WPC) is a composite material mainly made of wood or cellulose as the base material and plastic. It is a certain proportion of wood fibers (such as wood powder, straw powder, cotton stalk powder, bamboo powder, Nutshell powder, etc.) is a new type of material that is pretreated to combine it with thermoplastic polymer resin or other materials. This new material is both green and environmentally friendly and has good mechanic...

Claims

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Application Information

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IPC IPC(8): C08L51/00C08L51/06C08K13/04C08K7/08C08K3/30C08K5/5399C08K5/132C08F291/08C08F220/06C08H8/00
CPCC08F255/02C08F289/00C08H8/00C08K2003/3045C08L51/00C08F220/06C08L51/06C08K13/04C08K7/08C08K3/30C08K5/5399C08K5/132
Inventor 王静王海峰
Owner SUZHOU YIMU PACKING MATERIAL CO LTD
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