CN105924793A - Modified straw/PP (polypropylene) wood-plastic composite board and processing method thereof - Google Patents
Modified straw/PP (polypropylene) wood-plastic composite board and processing method thereof Download PDFInfo
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- CN105924793A CN105924793A CN201610533561.7A CN201610533561A CN105924793A CN 105924793 A CN105924793 A CN 105924793A CN 201610533561 A CN201610533561 A CN 201610533561A CN 105924793 A CN105924793 A CN 105924793A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/30—Applications used for thermoforming
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention relates to a modified straw/PP (polypropylene) wood-plastic composite board and a processing method thereof. The invention is characterized in that the modified straw/PP wood-plastic composite board is composed of the following components in parts by mass: 38-43 parts of modified wheat straw, 40-45 parts of polypropylene and 12-15 parts of coupling agent. The method comprises the following steps: by using the wheat straw fibers, a waste PP plastic film, a KH550 silane coupling agent, an acetic acid solution and an ethanol solution as raw materials, compounding and stirring the materials, carrying out paving forming, carrying out hot-press curing, carrying out drying curing and the like to obtain the straw wood-plastic composite board. In the processing method, the wheat straws are subjected to surface treatment modification to improve the interface binding force between the straw fibers and matrix, thereby enhancing the mechanical properties and moisture/water resistance of the wood-plastic composite material, balancing the water content of the board, enhancing the tensile strength, compression strength, bending strength and shock strength of the board, and preventing the board from cracking and buckling deformation.
Description
Technical field
The present invention is a kind of modified straw/PP wood-plastic clad plate and processing method thereof, belongs to man-made board technology field
Background technology
Wood-plastic board is the composite products of a kind of novel environment friendly, aborning, produced wood phenol during high density fiberboard, add regenerated plastics and make wood plastic composite through Granulation Equipments, then carry out extrusion group and make wood-plastic board.Can be used for indoor and outdoor fitting-up etc..
Agricultural crop straw is as the by-product of agricultural production, and yield is big, distribution is wide, according to statistics annual about 100,000,000 tons of current China agricultural crop straw generation amount.Owing to straw not carried out the most effective new source utilizing and making agricultural crop straw in recent years become rural environmental pollution.Annual summer and autumn, substantial amounts of Semen Tritici aestivi, corn straw are incinerated in field, produce substantial amounts of smog, cause whole nation air severe contamination on a large scale.
Summary of the invention
It is an object of the invention to provide a kind of modified straw/PP wood-plastic clad plate and processing method thereof, the method processes the modified interface binding power improving stalk fibre and matrix by wheat stalk carries out surface, thus improve the performance of wood plastic composite, including mechanical property and moistureproof and waterproof performance.
The present invention solve technical problem use following scheme:
A kind of modified straw/PP wood-plastic clad plate, is characterized in, is made up of following component in mass ratio, modified wheat straw 38-43 part, polypropylene 40-45 part, coupling agent 12-15 part.
Further, described polypropylene is industrial waste polyacrylic film.
Further, described modified wheat straw is 80 mesh, through the acetic acid solution modification gained of 5%.
The preparation method of a kind of modified straw/PP wood-plastic clad plate, it is characterised in that carry out as follows:
1) being washed with water by wheat stalk three times, then dry in the sun is low by 8% to moisture, pulverizes through pulverizer, sieves, take 80 mesh powder after roguing；
2) being soaked 48 hours by the acetic acid solution that wheat stalk powder mass fraction is 5%, post rinse to pH is neutrality, dries to moisture less than 5% under 105 °；
3) by KH550 silane coupler and ethanol according to volume ratio 1: 5 wiring solution-forming, dried wheat straw bar powder is put into mixed at high speed blender, stirring while spraying into coupling agent solution, will take out to coupling agent solution after full and uniform for Wheat Straw powder infiltration, 105 DEG C are dried.
4) the wheat straw bar powder and the PP thin film that take process are mixing in mixing roll, melting temperature 175 DEG C, and mixing time 5～7min mats formation into slab after mix homogeneously；
5) slab being put into cure under pressure in vulcanizing press, hot pressing temperature is 180 DEG C, and pressure is 12.5MPa, and the time is 12min, prepares straw/PP wood-plastic clad plate；
6) after straw good for cure under pressure/PP wood-plastic clad plate being put into baking oven, under the temperature conditions of 40 DEG C, it is dried 24 hours；
7), after dried straw/PP wood-plastic clad plate being taken out, composite board is put into temperature and relative humidity is respectively 25 ± 2 DEG C, displays 2 weeks under 40-70% environment.
Compared with the prior art, beneficial effects of the present invention is embodied in:
Modified straw/PP wood-plastic clad plate that the present invention uses, take full advantage of agriculture wheat straw and industrial processes garbage polyacrylic film, produce fitment material for family and not only save significant cost, and be to eliminate pollution, environment purification, the major action turned waste into wealth, for developing various places economy and saving a large amount of timber, and the enforcement to the strategy of sustainable development is significant.
The sheet material using the inventive method to prepare has preferable water proofing property and stronger mechanical property, is better than the particieboard of commercially available same specification, and technique is simple, and production cost is relatively low, can be widely applied to Decoration Industry, has good market prospect.
Preparation method of the present invention can balance the moisture content of sheet material, improves sheet material tension, resistance to compression, bending resistance and impact strength, prevents sheet material from ftractureing, buckling deformation.
Below by way of detailed description of the invention, technical solution of the present invention is described further.
Detailed description of the invention
Embodiment 1 modified straw/PP wood-plastic clad plate
A kind of modified straw/PP wood-plastic clad plate, is characterized in, is made up of following component in mass ratio, modified wheat straw 38-43 part, polypropylene 40-45 part, coupling agent 12-15 part.
The preparation method of embodiment 2 modified straws/PP wood-plastic clad plate
Step 1: being washed with water by wheat stalk three times, then dry in the sun is to moisture less than 8%, puts in flour mill and wear into Wheat Straw powder after roguing, obtains 80 mesh powder after screening processes；
Step 2: be modified wheat stalk powder processing: the acetic acid solution that wheat stalk powder mass fraction is 5% is soaked 48 hours, post rinse is neutrality to pH, then under 105 DEG C of temperature conditionss of baking oven, carry out 24 hours dried, make the average moisture content of bamboo fibre be maintained at less than 5%；
Step 3: 40 parts of wheat stalk powder after weighing processes by weight, polypropylene 48 parts, coupling agent 12 parts, by KH550 silane coupler and ethanol according to volume ratio 1: 5 wiring solution-forming, wheat stalk powder is put into mixed at high speed blender, stir while spraying into coupling agent solution, to take out after full and uniform for Wheat Straw powder infiltration to coupling agent solution, dried mixing in mixing roll with PP thin film, melting temperature 175 DEG C, mixing time 5～7min, mats formation into 400 × 400mm slab after mix homogeneously；
Step 4: put into by slab in vulcanizing press hot-forming, hot pressing temperature is 180 DEG C, and pressure is 12.5MPa, and the time is 12min, obtains 400mm × 400mm × 12mm straw/PP wood-plastic clad plate.
Step 5: after straw/PP wood-plastic clad plate is put into baking oven, under the temperature conditions of 40 DEG C, is dried 24 hours；
Step 6: dried straw/PP wood-plastic clad plate is put into and displayed for 2 week under temperature and relative humidity respectively 25 DEG C, 70% environment, cutting edge after taking-up, obtain straw/PP wood-plastic clad plate.
Reference standard GB/T1447-2005 (test PP wood plastic composite hot strength), by GB/T17657-1999 test PP wood plastic composite bending strength and the modulus of elasticity in static bending, loading velocity is 5mm/min, PP wood plastic composite impact strength, the mechanical property of test straw/PP wood-plastic clad plate is tested according to GB/T17657-1999；Measure wood plastic composite test specimen moisture content by GB/T17657-1999, test PP wood plastic composite water absorption with reference to GB/T17657-1999.Straw rear result before modified is as shown in the table:
In above example, unless otherwise noted, its component is commercial prior art products.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (4)
1. modified straw/PP wood-plastic clad plate, is characterized in that being made up of following component by weight, modified wheat
Straw 38-43 part, polypropylene 40-45 part, coupling agent 12-15 part.
A kind of modified straw/PP wood-plastic clad plate the most according to claim 1, is characterized in that, described polypropylene
It it is industrial waste polyacrylic film.
A kind of modified straw/PP wood-plastic clad plate the most according to claim 1, is characterized in that, described modification is little
Wheat Straw is 80 mesh, through the acetic acid solution modification gained of 5%.
4. the preparation method of modified straw/PP wood-plastic clad plate, it is characterised in that carry out as follows:
1) being washed with water by wheat stalk three times, then dry in the sun is low by 8% to moisture, through pulverizer pulverizing, mistake after roguing
Sieve, takes 80 mesh powder；
2) being soaked 48 hours by the acetic acid solution that wheat stalk powder mass fraction is 5%, post rinse to pH is neutrality,
Dry under 105 ° to moisture less than 5%；
3) by KH550 silane coupler and ethanol according to volume ratio 1: 5 wiring solution-forming, by dried wheat straw bar powder
Put into mixed at high speed blender, stir and spray into coupling agent solution, to coupling agent solution by the most equal for Wheat Straw powder
Taking out after even infiltration, 105 DEG C are dried.
4) the wheat straw bar powder and the PP thin film that take process are mixing in mixing roll, melting temperature 175 DEG C, mixing time 5～
7min, mats formation into slab after mix homogeneously；
5) slab being put into cure under pressure in vulcanizing press, hot pressing temperature is 180 DEG C, and pressure is 12.5MPa, the time
For 12min, prepare straw/PP wood-plastic clad plate；
6) after straw good for cure under pressure/PP wood-plastic clad plate being put into baking oven, under the temperature conditions of 40 DEG C, it is dried
24 hours；
7), after being taken out by dried straw/PP wood-plastic clad plate, composite board is put into temperature and relative humidity difference
It is 25 ± 2 DEG C, displays 2 weeks under 40-70% environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533561.7A CN105924793A (en) | 2016-07-07 | 2016-07-07 | Modified straw/PP (polypropylene) wood-plastic composite board and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533561.7A CN105924793A (en) | 2016-07-07 | 2016-07-07 | Modified straw/PP (polypropylene) wood-plastic composite board and processing method thereof |
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| CN105924793A true CN105924793A (en) | 2016-09-07 |
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| CN201610533561.7A Pending CN105924793A (en) | 2016-07-07 | 2016-07-07 | Modified straw/PP (polypropylene) wood-plastic composite board and processing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107200926A (en) * | 2017-07-10 | 2017-09-26 | 芜湖扬展新材料科技服务有限公司 | A kind of preparation method of nanometer of stalk modified polypropene |
| CN107602975A (en) * | 2017-09-08 | 2018-01-19 | 芜湖市创源新材料有限公司 | A kind of polyethylene wood plastic clad plate of styrene acrylic Modification by Melt Grafting and preparation method thereof |
| CN113583461A (en) * | 2021-07-30 | 2021-11-02 | 中国热带农业科学院南亚热带作物研究所 | Preparation method of banana stem leaf and straw fiber composite material |
| CN115260668A (en) * | 2022-09-02 | 2022-11-01 | 深圳市鼎力盛科技有限公司 | Novel material for breakage-proof packaging bag and preparation method thereof |
| CN115947992A (en) * | 2022-12-28 | 2023-04-11 | 上海日之升科技有限公司 | Wheat straw powder polypropylene wood-plastic composite material and preparation method thereof |
Citations (3)
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| CN1482166A (en) * | 2002-12-23 | 2004-03-17 | 北京欧尼克环保技术有限公司 | Wood plastic composite material and method for producing the same, method for producing panel and sheet made of wood plastic composite |
| CN1513918A (en) * | 2002-12-31 | 2004-07-21 | 中国石油化工股份有限公司 | Wood plastic composite material and its preparation method and application |
| CN102863693A (en) * | 2012-10-15 | 2013-01-09 | 南京农业大学 | Process for preparing wheat straw/plastic film composite material |
-
2016
- 2016-07-07 CN CN201610533561.7A patent/CN105924793A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482166A (en) * | 2002-12-23 | 2004-03-17 | 北京欧尼克环保技术有限公司 | Wood plastic composite material and method for producing the same, method for producing panel and sheet made of wood plastic composite |
| CN1513918A (en) * | 2002-12-31 | 2004-07-21 | 中国石油化工股份有限公司 | Wood plastic composite material and its preparation method and application |
| CN102863693A (en) * | 2012-10-15 | 2013-01-09 | 南京农业大学 | Process for preparing wheat straw/plastic film composite material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107200926A (en) * | 2017-07-10 | 2017-09-26 | 芜湖扬展新材料科技服务有限公司 | A kind of preparation method of nanometer of stalk modified polypropene |
| CN107602975A (en) * | 2017-09-08 | 2018-01-19 | 芜湖市创源新材料有限公司 | A kind of polyethylene wood plastic clad plate of styrene acrylic Modification by Melt Grafting and preparation method thereof |
| CN113583461A (en) * | 2021-07-30 | 2021-11-02 | 中国热带农业科学院南亚热带作物研究所 | Preparation method of banana stem leaf and straw fiber composite material |
| CN115260668A (en) * | 2022-09-02 | 2022-11-01 | 深圳市鼎力盛科技有限公司 | Novel material for breakage-proof packaging bag and preparation method thereof |
| CN115947992A (en) * | 2022-12-28 | 2023-04-11 | 上海日之升科技有限公司 | Wheat straw powder polypropylene wood-plastic composite material and preparation method thereof |
| CN115947992B (en) * | 2022-12-28 | 2024-02-20 | 上海日之升科技有限公司 | Wheat straw powder polypropylene wood-plastic composite material and preparation method thereof |
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Application publication date: 20160907 |
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