Title:
AGING-RESISTANT WOOD-PLASTIC PACKAGING MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/061757
Kind Code:
A1
Abstract:
Disclosed is a preparation method for an aging-resistant wood-plastic packaging material, comprising: crushing wood fibers into wood powder with a particle size of 80-120 meshes, adding dimethyl sulfate and polyethylene glycol, and placing into a high-pressure reaction vessel to react under a pressure of 4-8 MPa for 30-40 min, thereby obtaining modified wood powder; mixing and stirring polypropylene particles, basic magnesium sulfate whiskers, cyclophosphamide, and p-hydroxypropiophenone for 5-10 min; then performing melt blending and granulation with an extruder to obtain modified polypropylene particles; mixing modified wood powder and modified polypropylene particles, adding azodicarbonamide, dicumyl peroxide, 4-butanediol ester, and acrylic acid, and stirring and reacting at a temperature of 90-120°C for 20-40 min; adding the mixture into the extruder, and extruding at a temperature of 175-190°C at a screw rotation speed of 25-45 rpm; performing film molding with a mold at a temperature of 190-210°C under a pressure of 8-12 MPa; and cooling, thereby obtaining the aging-resistant wood-plastic packaging material.
Inventors:
WANG JING (CN)
WANG HAIFENG (CN)
WANG HAIFENG (CN)
Application Number:
PCT/CN2017/112136
Publication Date:
April 04, 2019
Filing Date:
November 21, 2017
Export Citation:
Assignee:
SUZHOU YIMU PACKING MAT CO LTD (CN)
International Classes:
C08L51/00; C08F220/06; C08F291/08; C08K3/30; C08K5/132; C08K5/5399; C08K7/08; C08K13/04; C08L51/06
Foreign References:
| CN107793687A | 2018-03-13 | |||
| CN104231430A | 2014-12-24 | |||
| CN102732044A | 2012-10-17 | |||
| CN104725719A | 2015-06-24 | |||
| JPH06345936A | 1994-12-20 |
Attorney, Agent or Firm:
CHANGZHOU ZIRRON PATENT OFFICE (GENERAL PARTNERSHIP) (CN)
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