CN103665903A - Wood-plastic composite material and manufacturing method thereof - Google Patents
Wood-plastic composite material and manufacturing method thereof Download PDFInfo
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- CN103665903A CN103665903A CN201310550061.0A CN201310550061A CN103665903A CN 103665903 A CN103665903 A CN 103665903A CN 201310550061 A CN201310550061 A CN 201310550061A CN 103665903 A CN103665903 A CN 103665903A
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- wood
- plastic composite
- wood powder
- molecular weight
- plastics
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- 229920001587 Wood-plastic composite Polymers 0.000 title claims abstract description 25
- 239000011155 wood-plastic composite Substances 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 title abstract description 8
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 239000002023 wood Substances 0.000 claims abstract description 40
- 229920000098 polyolefin Polymers 0.000 claims abstract description 23
- 229920003023 plastic Polymers 0.000 claims abstract description 22
- 239000004033 plastic Substances 0.000 claims abstract description 22
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 18
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 18
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 18
- 229910000077 silane Inorganic materials 0.000 claims abstract description 18
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 17
- 238000000465 moulding Methods 0.000 claims abstract description 9
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003999 initiator Substances 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 30
- 229920000642 polymer Polymers 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000003431 cross linking reagent Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 235000013312 flour Nutrition 0.000 abstract 5
- 238000004132 cross linking Methods 0.000 abstract 1
- 230000005012 migration Effects 0.000 abstract 1
- 238000013508 migration Methods 0.000 abstract 1
- 239000000178 monomer Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012978 lignocellulosic material Substances 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920002397 thermoplastic olefin Polymers 0.000 description 1
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a wood-plastic composite material and a manufacturing method thereof. The manufacturing method is characterized by comprising the following steps: mixing 0.2-1 wt% of polyisocyanate alkyl high molecular silane of which the molecular weight is greater than 10000 and wood flour to prepare modified wood flour, and performing mixed molding on 30-80 wt% of modified wood flour and plastic to obtain a wood-plastic product; or by taking dicumyl peroxide as initiator, reacting 1-6 wt% of polyisocyanate alkyl high molecular silane of which the molecular weight is greater than 10000 and polyolefin to obtain a functionalized polyolefin master batch, and performing mixed molding on 2-10 wt% of functionalized polyolefin master batch, plastic and wood flour to obtain the wood-plastic composite material. Compared with the prior art, the invention has the advantages of high crosslinking intensity, large material selection range, low surface migration possibility of high molecular crosslinking agent, weather resistance, no damage to color and smell of wood, low consumption of the crosslinking agent, high wood flour addition ratio and low comprehensive cost.
Description
Technical field
The present invention relates to a kind of matrix material.
Background technology
Wood plastic composite combines the double dominant of lignocellulosic material and polymer materials, its mechanical strength is good, excellent in cushion effect, hot retractility is lower than plastics, water-fast and moisture-resistance is obviously better than timber, good stability of the dimension, wear-resisting, resistance to chemical attack, resistance to damaging by worms, anti-rotten, have the dual processing characteristics of timber and plastics concurrently, it can utilize " waste or used plastics " and " waste wood filamentary material " for raw material, it is the efficient important channel utilizing of biomass and " white pollution " resource utilization, the requirement that meets recycling economy and build a conservation-minded society, there is huge ecological environment benefit.
The high surface energy system structure that lignocellulosic material is comprised of natural high moleculer eompound and extract etc., and plastics are by low surface energy system nonpolar or that low-pole polymer forms, there is interface very clearly in two-phase, bonding weakness, effectively way is by improving interphase structure, strengthen the consistency at the two interface, its compatible technique is the gordian technique that wood plastic composite is made.
What tradition solved compatible technique is generally at thermoplastic elastomer or polyolefin surfaces grafting of polar monomers, the monomer of institute's grafting is acid or alkaline monomer, the most general with grafted maleic anhydride monomer, also useful traditional low molecule coupling agent carries out modification to wood powder isopolarity phase thing, but that these traditional properties-correcting agent exist cross-link intensity is low, material selectivity is little, the easy surface transport of low molecule, not weather-proof, destroy wooden color and taste, and consumption is large, comprehensive cost is high.
Summary of the invention
Goal of the invention of the present invention is to provide that a kind of cross-link intensity is high, large, the low molecule of material range of choice is difficult for surface transport, weather-proof, can not destroy wooden color and taste and dosage of crosslinking agent few, wood plastic composite that comprehensive cost is low and preparation method thereof.
Wood plastic composite of the present invention is achieved in that polyisocyanates alkyl polymer silane, wood powder, the plastics that comprise that molecular weight is greater than 10000; Wherein wood powder exists with the state of modified wood powder, and the molecular weight that comprises 0.2 ~ 1wt% in modified wood powder is greater than 10000 polyisocyanates alkyl polymer silane, and in wood plastic composite, 30% ~ 80wt% is modified wood powder; Or comprise functional polyolefin masterbatch, functional polyolefin masterbatch comprises the polyisocyanates alkyl polymer silane that the molecular weight of the Polyolefin and 1 ~ 6wt% that participates in chemical reaction is greater than 10000, and wood plastic composite is comprised of plastics, wood powder and 2 ~ 10wt% functional polyolefin masterbatch.
The molecular formula of polyisocyanates alkyl polymer silane is as follows:
Wood plastic composite making method of the present invention is to realize like this, 0.2 ~ 1wt% molecular weight being greater than to 10000 polyisocyanates alkyl polymer silane mixes with wood powder, make modified wood powder, then, by 30 ~ 80wt% modified wood powder and plastics mixing moulding, make wood plastic product; Or the dicumyl peroxide (DCP) of take is initiator, 1 ~ 6wt% molecular weight is greater than to 10000 polyisocyanates alkyl polymer silane and reacts with polyolefine and make functional polyolefin masterbatch, 2 ~ 10wt% functional polyolefin masterbatch and radwood, wood powder are mixed together to moulding and make wood plastic composite.
Compared with the prior art the present invention, has that cross-link intensity is high, material range of choice is large, macromolecule crosslink agent is difficult for surface transport, weather-proof, can not destroy wooden color and taste and dosage of crosslinking agent few, and wood powder adding proportion is high, the advantage that comprehensive cost is low.
Embodiment:
Now the present invention is described in further detail in conjunction with the embodiments:
Embodiments of the invention 1 wood plastic composite making method is to realize like this, 0.2 ~ 1wt% molecular weight being greater than to 10000 polyisocyanates alkyl polymer silane mixes with wood powder, make modified wood powder, then, by 30 ~ 80wt% modified wood powder and plastics mixing moulding, make wood plastic product.
The molecular formula of polyisocyanates alkyl polymer silane is as follows:
Embodiments of the invention 2 wood plastic composite making methods are to realize like this, 0.3-0.5wt% the dicumyl peroxide (DCP) of take is initiator, 1 ~ 6wt% molecular weight is greater than to 10000 polyisocyanates alkyl polymer silane and reacts with polyolefine and make functional polyolefin masterbatch, the plastics of 2 ~ 10wt% functional polyolefin masterbatch and wood powder and 15 ~ 40wt% are mixed together to moulding and make wood plastic composite.
By the prepared wood plastic composite of the present invention of aforesaid method, comprise polyisocyanates alkyl polymer silane, wood powder, plastics that molecular weight is greater than 10000.Following table is composition content and the effect list of a plurality of embodiment.(unit is: wt%)
The present invention is due to the polyisocyanates alkyl polymer silane that has adopted molecular weight to be greater than 10000, and therefore, macromolecule crosslink agent is difficult for surface transport, good weatherability, it is few can not destroy wooden color and taste and dosage of crosslinking agent, and wood powder adding proportion is high.
Claims (5)
1. at a kind of wood plastic composite, it is characterized in that the polyisocyanates alkyl polymer silane, wood powder, the plastics that comprise that molecular weight is greater than 10000; Wherein wood powder exists with the state of modified wood powder, and the molecular weight that comprises 0.2 ~ 1wt% in modified wood powder is greater than 10000 polyisocyanates alkyl polymer silane, and in wood plastic composite, 30% ~ 80wt% is modified wood powder; Or comprise functional polyolefin masterbatch, functional polyolefin masterbatch comprises the polyisocyanates alkyl polymer silane that the molecular weight of the Polyolefin and 1 ~ 6wt% that participates in chemical reaction is greater than 10000, and wood plastic composite is comprised of plastics, wood powder and 2 ~ 10wt% functional polyolefin masterbatch.
2. wood plastic composite according to claim 1, is characterized in that by wood powder, 15 ~ 40wt% plastics, 2 ~ 10wt% being that functional polyolefin masterbatch forms.
3. a wood plastic composite making method, it is characterized in that 0.2 ~ 1wt% molecular weight is greater than to 10000 polyisocyanates alkyl polymer silane to be mixed with wood powder, make modified wood powder, then, by 30 ~ 80wt% modified wood powder and plastics mixing moulding, make wood plastic product; Or take dicumyl peroxide as initiator, 1 ~ 6wt% molecular weight is greater than to 10000 polyisocyanates alkyl polymer silane and reacts with polyolefine and make functional polyolefin masterbatch, 2 ~ 10wt% functional polyolefin masterbatch and plastics, wood powder are mixed together to moulding and make wood plastic composite.
4. wood plastic composite making method according to claim 3, the consumption that it is characterized in that making the dicumyl peroxide in functional polyolefin masterbatch is 0.3-0.5%.
5. according to the wood plastic composite making method described in claim 3 or 4, it is characterized in that wood powder and 2 ~ 10wt% functional polyolefin masterbatch, 15 ~ 40wt% plastics are mixed together moulding and make wood plastic composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550061.0A CN103665903A (en) | 2013-11-08 | 2013-11-08 | Wood-plastic composite material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550061.0A CN103665903A (en) | 2013-11-08 | 2013-11-08 | Wood-plastic composite material and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103665903A true CN103665903A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310550061.0A Pending CN103665903A (en) | 2013-11-08 | 2013-11-08 | Wood-plastic composite material and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN103665903A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6221995B1 (en) * | 1998-04-30 | 2001-04-24 | Takeda Chemical Industries, Ltd. | Modified polyisocyanate and production process thereof |
| US20020103286A1 (en) * | 2000-12-04 | 2002-08-01 | Peter Speier | Cross-linking agents and thermosetting paints |
| CN1807478A (en) * | 2006-01-13 | 2006-07-26 | 济南大学 | Polyurethane prepolymer interface coupling agent and its preparation method and uses |
| CN101153098A (en) * | 2007-09-12 | 2008-04-02 | 东北林业大学 | A kind of micro-foamed polystyrene-based wood-plastic composite material and preparation method thereof |
| CN102134255A (en) * | 2011-01-17 | 2011-07-27 | 湖北德邦化工新材料有限公司 | Hydrophilic siloxane modified isocyanate tripolymers and preparation method thereof |
| CN102391396A (en) * | 2011-09-02 | 2012-03-28 | 东北林业大学 | Interfacial compatilizer, preparation method of interfacial compatilizer and application method of interfacial compatilizer to wood plastic composite |
| CN102604041A (en) * | 2011-12-29 | 2012-07-25 | 肇庆千江高新材料科技有限公司 | Silicon modified double cross-linking type aqueous polyurethane curing agent and preparation method thereof |
-
2013
- 2013-11-08 CN CN201310550061.0A patent/CN103665903A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6221995B1 (en) * | 1998-04-30 | 2001-04-24 | Takeda Chemical Industries, Ltd. | Modified polyisocyanate and production process thereof |
| US20020103286A1 (en) * | 2000-12-04 | 2002-08-01 | Peter Speier | Cross-linking agents and thermosetting paints |
| CN1807478A (en) * | 2006-01-13 | 2006-07-26 | 济南大学 | Polyurethane prepolymer interface coupling agent and its preparation method and uses |
| CN101153098A (en) * | 2007-09-12 | 2008-04-02 | 东北林业大学 | A kind of micro-foamed polystyrene-based wood-plastic composite material and preparation method thereof |
| CN102134255A (en) * | 2011-01-17 | 2011-07-27 | 湖北德邦化工新材料有限公司 | Hydrophilic siloxane modified isocyanate tripolymers and preparation method thereof |
| CN102391396A (en) * | 2011-09-02 | 2012-03-28 | 东北林业大学 | Interfacial compatilizer, preparation method of interfacial compatilizer and application method of interfacial compatilizer to wood plastic composite |
| CN102604041A (en) * | 2011-12-29 | 2012-07-25 | 肇庆千江高新材料科技有限公司 | Silicon modified double cross-linking type aqueous polyurethane curing agent and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 杨安昌等: "《塑料异型材制品缺陷及其对策（第1版）》", 31 May 2006, 化学工业出版社 * |
| 杨庆文等: ""水溶性高分子封闭多异氰酸酯烃基硅烷偶联剂及其衍生物在猪皮清洁制革工艺中的应用"", 《2006年第十三届中国有机硅学术交流会论文集》 * |
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Application publication date: 20140326 |
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