CN100463939C - Wood plastic micro foaming composite material and its processing shaping method - Google Patents

Wood plastic micro foaming composite material and its processing shaping method Download PDF

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Publication number
CN100463939C
CN100463939C CNB2005101127265A CN200510112726A CN100463939C CN 100463939 C CN100463939 C CN 100463939C CN B2005101127265 A CNB2005101127265 A CN B2005101127265A CN 200510112726 A CN200510112726 A CN 200510112726A CN 100463939 C CN100463939 C CN 100463939C
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CN
China
Prior art keywords
parts
foaming
adopts
wood plastic
wood
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Application number
CNB2005101127265A
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Chinese (zh)
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CN1948384A (en
Inventor
薛平
丁筠
贾明印
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北京化工大学
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Priority to CNB2005101127265A priority Critical patent/CN100463939C/en
Publication of CN1948384A publication Critical patent/CN1948384A/en
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Publication of CN100463939C publication Critical patent/CN100463939C/en

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Abstract

This invention relates to a wood plastic micro-foam composite and its processing and shaping technology, mainly including various kinds of processing accessory ingredient, such as: polyvinyl chloride resin, sanding powder, chemistry(AC) blowing agent, plasticizer, assistant blowing agent and so on, mixing uniformly in high speed mixer, extrude palletizing in single screw extruder or twin screw extruder, prepared particles form a kind of continuous uniform wood plastic micro-foam composite through single, twin screw extruder and foaming tooting, it can efficiently overcome the flaw of large density and low impact strength of common wood plastic composite. This invention provides broader reuse way for solving many industrial waste sanding powder or wood powder, can extensively process and form indoor and outdoor decoration, building doors, window products and so on.

Description

Wood plastic micro foaming composite material and processing molding method thereof
Technical field
The present invention relates to a kind of Wood plastic micro foaming composite material and processing molding method thereof,
Background technology
Wood plastic composite has the dual nature of timber and plastics concurrently, and product is not afraid of and is damaged by worms, not living fungi, and anti-strong acid and strong base does not absorb moisture, and is not yielding, and good mechanical property also is a kind of environment-friendly materials, and raw material is cheap abundant, recyclable.But Wood model compound products is compared with unfilled plastics, because the modulus of wood fibre is higher, has increased the fragility of mixture, and shock resistance stress is also lower.In matrix material, produce bubble structure by continuous extrusion and foaming process and can effectively overcome above-mentioned shortcoming.Chinese patent 02157949.0 discloses a kind of Wood plastic micro foaming composite material and processing and forming technology, mix with wood powder, mineral filler, auxiliary agent, whipping agent and properties-correcting agent with plastics, with the processing foamed Wood-plastic material of the forming method of an extrusion foaming, but because foaming back abscess passivation crack tip and effective expansion that stops crackle, thereby significantly improve the shock resistance and the ductility of material, and greatly reduce the density of goods.But the starting material that this patent adopts are the wood powder that wood chip, rice husk etc. are made, waste wood powder (sanding powder) for the generation of imitation wood's tankage such as (veneer sheet, density board, glued boards), owing to wherein contain tackiness agent and terra alba, increased the viscosity of polymer melt, make its mobile variation, increase the foaming difficulty, be difficult to make the uniform industrial goods of abscess.From the complete processing aspect, existing extrusion foaming is the straight forming foaming product in addition, exists the problem that influences quality of item because of plasticizing rate inadequately, and forming process is convenient, flexible inadequately.
Summary of the invention
The invention solves the technical problems such as processing fluidity of plastics and industrial waste sanding powder mixing extrusion foaming, the Wood plastic micro foaming composite material that a kind of density is low, impact strength is high is provided, processing method of the present invention can process foaming granule material, the various Wood-plastic foam goods of machine-shaping flexibly simultaneously.
Wood plastic micro foaming composite material of the present invention is made up of by ratio of quality and the number of copies following raw material:
100 parts of polyvinyl chloride
30~70 parts of sanding powders
0.5~2.0 part of Cellmic C 121 (AC whipping agent)
5.0~10.0 parts of thermo-stabilizers
1.0~3.0 parts in softening agent
1.0~2.0 parts of lubricants
3.0~10.0 parts of blowing promotors
2.0~4.0 parts of coupling agents
Described sanding powder is imitation wood's's (veneer sheet, density board, glued board) etc. tankage, and the inside composition mainly contains wood chip, tackiness agent and terra alba etc., and the sanding powder fineness is 60~200 orders.
Described stablizer adopts stablizer commonly used: lead sulfate tribasic, dibasic lead phosphite, lead stearate are or/and barium stearate, can be separately with above a kind of stablizer, also can be by lead sulfate tribasic: the proportioning of dibasic lead phosphite: lead stearate: barium stearate=3.0:2.0:1.0:1.0 be mixed and is used.
Described softening agent adopts dioctyl phthalate (DOP) (DOP) or dibutylester (DBP), can shorten process period and fusion time, improves the snappiness etc. of flexibility, heat distortion and the goods of goods.
Described lubricant adopts internal lubricant and external lubricant, internal lubricant adopts hard ester acid and its esters, external lubricant adopts paraffin, polyethylene wax or oxidized polyethlene wax, it is in order to weaken the reactive force between the polymer molecule that internal lubricant mainly acts on, reduced the internal friction between the polymer molecule, make the viscosity degradation of polymer melt, increase mobile.It is the friction that reduces between the metallic surface of polymer melt surface and processing units that external lubricant mainly acts on.
Described blowing promotor adopts the multipolymer (ACR) of methacrylic ester and acrylate, or adopts chlorinatedpolyethylene (CPE) or ethene-vinyl acetate copolymer (EVA)
The present invention also comprises the processing molding method of above-mentioned foam material, comprises following processing step:
B. by following mass percent batching
100 parts of polyvinyl chloride
30~70 parts of sanding powders
0.5~2.0 part of Cellmic C 121
5.0~10.0 parts of thermo-stabilizers
1.0~3.0 parts in softening agent
1.0~2.0 parts of lubricants
3.0~10.0 parts of blowing promotors
2.0~4.0 parts of coupling agents
B. mix carrying out heat in polyvinyl chloride (PVC) RESINS and the sanding powder adding high-speed mixer, add coupling agent, softening agent, thermo-stabilizer, lubricant and blowing promotor processing aid after mixing for some time, mixing temperature is 110 ℃~120, mixing time 10~20min, the heat material that mixes is entered cold mixing to 40 ℃ in the cold mixer, add the chemical foaming agent Cellmic C 121 then and mix;
C. the material that mixes is added extruding pelletization in the screw extrusion press; The granulation extrusion temperature is 140-190 ℃;
D. the particulate material of preparation is extruded by list or twin screw extruder,, be shaped to the special-shaped foaming product of different shape through foaming mould foaming and cooling and shaping.
The present invention is by adjusting the batching prescription and the processing aid of suitable component; plastics and the difficult foaming problem of waste wood (sanding powder) the mixed flow difference that contains tackiness agent and terra alba have effectively been solved; obtain a kind of continuously uniform fine foaming wood plastic composite materials; the industrial waste sanding powder is recycled widely; turn waste into wealth the protection environment.Adopt method of the present invention in addition, can obtain foaming granule material, the moulded products soffening is improved, improve Products Quality, and forming process is more flexible.
Embodiment
The present invention describes in detail by following examples, and it is listed that still enforcement of the present invention is not limited to embodiment.
Embodiment 1:
The fine foaming wood plastic composite materials is made of by mass percentage following raw material:
100 parts of polyvinyl chloride
30 parts of sanding powders
1.5 parts of AC (whipping agent)
5.0 parts of thermo-stabilizers
1.8 parts in softening agent
1.5 parts of lubricants
5.0 parts of blowing promotors
2.0 parts of coupling agents
A. polyvinyl chloride resin powder and 100 purpose sanding powders (commercially available industrial goods) are added to and carry out heat in the SRL-Z200/500 high-speed mixer and mix, mix 5min, by processing aids such as above-mentioned prescription weighing thermo-stabilizer, lubricant, softening agent, stablizer is by lead sulfate tribasic: dibasic lead phosphite: lead stearate: barium stearate=3.0:2.0:1.0:1.0 carries out proportioning, and be added in the mixing machine, 110 ℃ of mixing temperatures, mixing time 10min.The heat material that mixes is entered cold mixing to 40 ℃ in the cold mixer; Adding whipping agent then mixes and gets final product;
B. the material that mixes adds the tapered twin screw extruder blend of SJZ-80/156 type granulation, and forcing machine feeding section, compression section, exhaust section, homogenizing zone, interflow section, each section of head temperature are set at respectively: 170 ℃, 180 ℃, 180 ℃, 170 ℃, 165 ℃, 180 ℃ (head);
C. the particle that makes is extruded by the SJ-65 single screw extrusion machine, each section of forcing machine feeding section, compression section 1, compression section 2, metering zone, each section of head temperature temperature are respectively: 120 ℃, 140 ℃, 150 ℃, 160 ℃, 165 ℃, through foaming mould foaming and cooling and shaping, the foaming product of moulding definite shape, these goods are fine foaming wood plastic composite materials of a kind of continuous even foaming.Can obtain Industrial products by aftertreatments such as drying, traction, cuttings behind the cooling and shaping.
Embodiment 2, embodiment 3, embodiment 4: processing step is with embodiment 1, each component such as table 1:
Table 1

Claims (3)

1. a Wood plastic micro foaming composite material is characterized in that, is made up of by ratio of quality and the number of copies following raw material:
100 parts of polyvinyl chloride
30~70 parts of sanding powders
0.5~2.0 part of Cellmic C 121
5.0~10.0 parts of thermo-stabilizers
1.0~3.0 parts in softening agent
1.0~2.0 parts of lubricants
3.0~10.0 parts of blowing promotors
2.0~4.0 parts of coupling agents
Described sanding powder main component is the waste wood that contains wood chip, tamanori and terra alba, and the sanding powder fineness is 60~200 orders; Described thermo-stabilizer adopts lead sulfate tribasic, dibasic lead phosphite, lead stearate or/and barium stearate; Described softening agent adopts dioctyl phthalate (DOP) or dibutylester; Described lubricant adopts internal lubricant and external lubricant, and internal lubricant adopts hard ester acid and its esters, and external lubricant adopts paraffin, polyethylene wax or oxidized polyethlene wax; Described blowing promotor adopts the multipolymer of methacrylic ester and acrylate, or adopts chlorinatedpolyethylene or ethene-vinyl acetate copolymer.
2. according to the Wood plastic micro foaming composite material of claim 1, it is characterized in that: described thermo-stabilizer is pressed lead sulfate tribasic: dibasic lead phosphite: lead stearate: the proportioning of barium stearate=3.0:2.0:1.0:1.0 is mixed use.
3. the processing molding method of the described Wood plastic micro foaming composite material of claim 1 is characterized in that: adopt following processing step:
A. by following mass percent batching
100 parts of polyvinyl chloride
30~70 parts of sanding powders
0.5~2.0 part of Cellmic C 121
5.0~10.0 parts of thermo-stabilizers
1.0~3.0 parts in softening agent
1.0~2.0 parts of lubricants
3.0~10.0 parts of blowing promotors
2.0~4.0 parts of coupling agents
B. mix carrying out heat in polyvinyl chloride (PVC) RESINS and the sanding powder adding high-speed mixer, add coupling agent, softening agent, thermo-stabilizer, lubricant and blowing promotor processing aid after mixing for some time, mixing temperature is 110 ℃~120, mixing time 10~20min, the heat material that mixes is entered cold mixing to 40 ℃ in the cold mixer, add the chemical foaming agent Cellmic C 121 then and mix;
C. the material that mixes is added extruding pelletization in the screw extrusion press;
D. the particle of preparation is extruded by list or twin screw extruder,, be shaped to the special-shaped foaming product of different shape through foaming mould foaming and cooling and shaping.
CNB2005101127265A 2005-10-12 2005-10-12 Wood plastic micro foaming composite material and its processing shaping method CN100463939C (en)

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Application Number Priority Date Filing Date Title
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CN100463939C true CN100463939C (en) 2009-02-25

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CN101967938B (en) * 2010-09-20 2012-07-04 浙江中财型材有限责任公司 Micro-foaming co-extrusion profiled bar and preparation method thereof
CN102069613A (en) * 2010-10-19 2011-05-25 曾广胜 Impact-resistant composite packaging material
CN102492245A (en) * 2011-12-19 2012-06-13 天津鼎升昊科技发展有限公司 Formula and method for producing wood-plastic composite material by utilizing waste polyvinyl chloride cable materials
CN103059381A (en) * 2013-01-14 2013-04-24 思伊纳化学科技(北京)有限公司 Inorganic mineral filled wood-plastic composite material and preparation method thereof
CN103232652A (en) * 2013-04-27 2013-08-07 苏州市德莱尔建材科技有限公司 Filling foamed semihard PVC (polyvinyl chloride) floor board and preparation method thereof
CN103233572B (en) * 2013-04-27 2015-06-03 苏州市德莱尔建材科技有限公司 Method for producing floor tiles through polyvinyl chloride (PVC) films
CN103665633B (en) * 2013-11-01 2016-03-23 界首市佳通塑胶制品有限公司 A kind of expansion type environment-friendlywood-plastic wood-plastic composite material
CN103756175A (en) * 2013-11-25 2014-04-30 吴江市董鑫塑料包装厂 PVC (polyvinyl chloride) wood grain section material
CN104312052A (en) * 2014-11-06 2015-01-28 安徽省三乐门窗幕墙工程有限公司 Fluorgypsum PVC wood-plastic composite and preparation method thereof
CN107033481B (en) * 2016-04-01 2019-08-06 湖南天仁科技实业发展有限公司 A kind of novel PVC biomass foamed profile and preparation method thereof
CN107033480B (en) * 2016-04-01 2019-08-06 湖南天仁科技实业发展有限公司 A kind of PVC biomass foaming composite material and preparation method
CN107033482B (en) * 2016-04-01 2019-08-06 湖南天仁科技实业发展有限公司 A kind of PVC foam profile and preparation method thereof
CN106867151A (en) * 2017-03-24 2017-06-20 重庆市帅之盾门业有限公司 The imitation solid wood board prepared using sawdust
BR112020025473A2 (en) * 2018-07-04 2021-03-16 China Petroleum & Chemical Corporation MULTIPHASE PARTICLE, MANUFACTURING PROCESS AND ITS USE

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