CN105082303B - A kind of preparation method of high-intensity wood plastic composite - Google Patents
A kind of preparation method of high-intensity wood plastic composite Download PDFInfo
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Abstract
The invention discloses the preparation method that a kind of utilization pectase prepares high-intensity wood plastic composite, the wood plastic composite includes wooden, non-wood or bamboo wood plastic composite, wooden, non-wood or bamboo fiber or powder quality percentage are 5 ~ 80% in the wooden, non-wood or bamboo wood plastic composite, and remaining is plastics；The plastics include polyethylene, polypropylene, polyvinyl chloride etc..The preparation method includes pre-treatment, boiling, fiber preparation（It is prepared by powder）, pectinase treatment, mixing, extruding or concora crush step.Wood material, non-wood material or bamboo wood are prepared into after fibrous raw material or dusty raw materials by the present invention recycles pectase to be handled, and product of the present invention has the good characteristic of good intensity height, impact resistance, load-bearing property and reusable edible, recycling, re-workability.The present invention can significantly economize on resources, preserve the ecological environment, and effectively improve the mechanical strength of existing wood plastic composite.
Description
Technical field
The invention belongs to technical field of biological materials, further belong to and prepare wood plastic composite skill using cellulase treatment
Art field, and in particular to a kind of that raw material are carried out with the method that pretreatment prepares high-intensity wood plastic composite using pectase.
Background technology
Wood plastic composite has the double grading of wood materials and plastics, can be widely used in preparation room and
Outdoor furniture, materials for wall, structural material, automobile baffle etc., it is a kind of new material.But wood materials are a kind of polarity
Material and resin（Including polyethylene, polypropylene, high density poly propylene and polyvinyl chloride etc.）It is a kind of non-polar material, in order to make
For the more excellent wood plastic composite of performance is gone out, current lot of domestic and foreign researcher is all around the boundary of improvement wood plastic composite
Face compatibility is strengthened and carried out using inorfil；These researchs, which are included in wood plastic composite, adds coupling agent, chelating
Agent is to improve interface compatibility between wood materials and resin or handle wood materials using physicochemical method
Surface, to improve physical and mechanical property or the utilization of interface compatibility and wood plastic composite between wood materials and resin
Glass fibre, asbestos fibre, basalt fibre, carbon fiber etc. prepare high-intensity wood plastic composite as reinforcing material.But
Raw material is handled currently with pectase to reach that the report for improving wood plastic composite physical and mechanical property is also rarely found.
Pectin is the class material that a kind of content in terrestrial plant is less but plays a key effect, and is distributed mainly on cell
Intercellular layer and primary wall in, content is up to 35% in the primary wall of plant, in the early development of cell, pectic substance with it is inorganic
Matter forms the material of similar " eggshell " on the surface of cell, serves support and the effect of protection cell, in plant cell hair
After incubation is ripe, the chemical bond of complexity is formd between the compound such as pectic substance and cellulose, hemicellulose, lignin, is served
The effect of viscose fibre cell.But when biological material is applied to prepare composite, nano-cellulose, Ethanol, fruit
Colloid and " eggshell " the class material for being wrapped in cell surface of inorganic matter formation will play adverse effect.Pectase is that a class can
With the general name of the biology enzyme of depolymerized pectin matter, biological material is handled using pectase, pectic substance and fibre can be destroyed
Chemical bond between dimension element, hemicellulose and lignin, plays the purpose on activated biomass material surface, so as to prepare one kind
The biomass composite of high intensity.
The content of the invention
The purpose of invention is the preparation method for providing the high-intensity wood plastic composite.
The object of the present invention is achieved like this, and described high-intensity wood plastic composite includes wooden, non-wood or bamboo
Material fiber or powder reinforced plastics prepare high-intensity wood plastic composite, described wooden, non-wood or bamboo fiber or powder
Mass percent be 5 ~ 80%, remaining is plastics.Preparation method is chipped including raw material, prepared by fiber or prepared by powder, pectase
Processing, raw material drying, raw material mixing, plate forming, sheet material post processing and performance test step, are specifically included：
A, raw material are chipped：Wood material, non-wood material or bamboo wood moisture content are adjusted to 30 ~ 50%, length is made through wood chipping equipment
18 ~ 20mm is spent, 15 ~ 18mm of width, 4 ~ 5mm of thickness wood chip, bamboo chip, non-wood material particle is standby；
Prepared by B, fiber or prepared by powder：By the wood material wood chip prepared, non-wood material particle or bamboo wood bamboo chip
15 ~ 120min of boiling at 100 ~ 180 DEG C of temperature, it is rear recycle high concentration disc mill to the wood chip after boiling, particle or
Bamboo chip is prepared into fiber；Or the raw material wood chip prepared, non-wood material particle or bamboo wood bamboo chip are directly utilized into grinder
Crushing is ground, powder is prepared into.
C, pectinase treatment：The fiber prepared or powder stock are handled using pectinase solution, pectase
Concentration is 0.01%-5.0%, and processing time is 30-120min, and treatment temperature is 30-50 DEG C.
D, raw material drying：Fiber or powder after pectinase solution is handled is entered under the conditions of 140-180 DEG C of temperature
Row drying, drying time is 5s-10min, dries to moisture content and is less than 1%.
E, mixed-forming：Dried fiber and plastics by formula be mixed to get to the mixture of fiber and plastics,
Target composite is obtained after shaping.
F, sheet material post processing：Target composite after overmolding is needed under the conditions of humidity 60%, 25-30 DEG C of temperature
Handled, processing time is 24-36h.
G, performance test：Sheet material by post processing is tested according to certain testing standard, it is qualified after tested after
Sheet material carries out Package Testing, and underproof material carries out secondary operation again.
The present invention using by the treated fibrous or powdered wooden or non-wooden material of pectinase solution as
The filler of wood plastic composite is to prepare the wood plastic composite that physical and mechanical property is excellent.By the place of pectinase solution
Reason, the incrusting substance of biological material cell surface is removed, the change between pectic substance and cellulose, hemicellulose and lignin
Learn key to be destroyed, improve the binding ability between the surface-active and biological material and plastics of biological material, help
In preparing a kind of wood plastic composite of high intensity.The implementation of the technology can not only significantly economize on resources, preserve the ecological environment,
And the density and thickness of existing wood plastic composite are effectively reduced, to promote the fast development of wood plastic composite, development is new
Type high intensity, ultra-thin wood plastic composite and set up conservation-minded society and lay the foundation.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings, but the present invention is not any limitation as in any way, base
In present invention teach that any conversion or replacement made, belong to protection scope of the present invention.
High-intensity wood plastic composite of the present invention includes wooden, non-wood or bamboo fiber or powder and plastics,
Described wooden, non-wood or bamboo fiber mass percent are 5 ~ 80%, and remaining is plastics.
The pectase can be with one or more mixtures of depolymerized pectin enzyme, the concentration of pectinase solution to be all
0.01-5%, treatment temperature is 30-50 DEG C, and processing time is 30-120min.
Described high-intensity wood plastic composite also including mass percent 0.1 ~ 5% coupling agent and mass percent 1 ~
10% lubricant.
Described plastics are thermoplastics, are one kind in polyethylene, polypropylene, high density polyethylene (HDPE), polyvinyl chloride.
Described coupling agent be acetic acid esters, maleic anhydride, silane, isocyanates, dicumyl peroxide, Aluminate, ethene-
One kind in acrylate, titanate esters, phosphate, magnesium class coupling agent, tin class coupling agent or chromium complex.
Described lubricant is zinc stearate, calcium carbonate, ethylene bis-fatty acid amides, polyester wax, stearic acid, stearic acid
One kind in lead, Tissuemat E, paraffin, OPE；It is preferred that calcium carbonate（CaCO3）.
Preparation method is chipped including raw material, fiber prepare or powder preparations, pectinase treatment, raw material drying, raw material mix,
Plate forming, sheet material post processing and performance test step, are specifically included：
A, raw material are chipped：Wood material, non-wood material or bamboo wood moisture content are adjusted to 30 ~ 50%, length is made through wood chipping equipment
18 ~ 20mm is spent, 15 ~ 18mm of width, 4 ~ 5mm of thickness wood chip, bamboo chip, non-wood material particle is standby；
Prepared by B, fiber or prepared by powder：By the wood material wood chip prepared, non-wood material particle or bamboo wood bamboo chip
15 ~ 120min of boiling at 100 ~ 180 DEG C of temperature, it is rear recycle high concentration disc mill to the wood chip after boiling, particle or
Bamboo chip is prepared into fiber；Or the raw material wood chip prepared, non-wood material particle or bamboo wood bamboo chip are directly utilized into grinder
Crushing is ground, powder is prepared into.
C, pectinase treatment：The fiber prepared or powder stock are handled using pectinase solution, pectase
Concentration is 0.01%-5.0%, and processing time is 30-120min, and treatment temperature is 30-50 DEG C.
D, raw material drying：Fiber or powder after pectinase solution is handled is entered under the conditions of 140-180 DEG C of temperature
Row drying, drying time is 5s-10min, dries to moisture content and is less than 1%.
E, mixed-forming：Dried fiber and plastics by formula be mixed to get to the mixture of fiber and plastics,
Target composite is obtained after shaping.
F, sheet material post processing：Target composite after overmolding is needed in humidity 40-60%, 25-30 DEG C of condition of temperature
Lower to be handled, processing time is 24-36h.
G, performance test：Sheet material by post processing is tested according to certain testing standard, it is qualified after tested after
Sheet material carries out Package Testing, and underproof material carries out secondary operation again.
A kind of preparation method of high-intensity wood plastic composite of the present invention is described utilization through pectinase treatment
Fibrous wood materials or wood powder prepare a kind of method of wood plastic composite.
A kind of preparation method of described high-intensity wood plastic composite, its preparation method is to utilize concora crush, extruding or mould
Described high-intensity wood plastic composite is molded by platen press under the conditions of 110 ~ 180 DEG C, the density of product for 0.70 ~
1.50g/cm3, product thickness is 6 ~ 30mm, and molding time is 30 ~ 90s/mm；The plate after flat-press process or die pressing shaping will be utilized
Material, in 25-30 DEG C of temperature after cooling, carries out modifier treatment 24-36h under the conditions of relative humidity 40-60%.
Relative to prior art, the present invention has advantages below：Initiatively using pectinase solution by wood material, non-
Wood material or bamboo wood are prepared into threadiness or dusty raw materials, substitute the powder used in existing wood plastic composite preparation process
Shape fiber, bast long fiber, inorfil etc.；Compared with similar wood plastic composite, the product has intensity height, load-bearing property
Good characteristic, available for preparing the fields such as furniture, wall, timber, packing case, automobile baffle.The implementation of the technology can not only show
Work economizes on resources, preserved the ecological environment, and effectively improves the intensity of existing wood plastic composite, to promote wood plastic composite
Fast development, Development of Novel high intensity, light wood plastic composite material and set up conservation-minded society and lay the foundation.
The present invention is further described with some embodiments below：
Embodiment 1 --- prepare pinus khasys fiber reinforced polypropylene based composites
Reinforcing material using pinus khasys as wood plastic composite prepares behavior of polypropylene composites.（1）Adjust pinus khasys
Then timber and brush wood moisture content be made 18~20mm of length to 30~50% through wood chipping equipment, 15~18mm of width, and thickness 4~
5mm wood chip；It is standby after removing out-of-size wood chip through screening；（2）It is prepared by fiber：By wood under the conditions of 180 DEG C of temperature
Wood chip carries out boiling, and digestion time is 15min；Defibrator process is carried out to well-done Simao pine sheet using high concentration disc mill afterwards,
To prepare fiber；（3）Pectinase solution processing：Using the pectinase solution that concentration is 0.05% under the conditions of temperature 45 C, processing
30min；（4）Fiber drying：The fiber of separator well is dried under the conditions of 130 DEG C, it is 0-1% to dry to moisture content.（5）
Raw material is mixed：Dried fiber is mixed with polypropylene plastics, the addition of fiber is 50%, polyacrylic addition
For 50%.（6）Plate forming：The mixture of fiber and plastics is molded using flat-press process, forming temperature is 180 DEG C, product
Density be 0.80g/cm3, sheet metal thickness is 10mm, molding time 30s/mm.（7）Sheet material is post-processed：Will using flat-press process into
Sheet material after type, after after sheet material cooling and shaping, is handled, processing time is under the conditions of humidity 60%, 25-30 DEG C of temperature
24h.（8）Performance test：The performance of sheet material is tested using omnipotent mechanics machine, test result is shown in Table 1.
Embodiment 2 --- prepare pinus khasys fiber reinforced polypropylene based composites
Embodiment 1 is repeated, with following difference, the processing time of pectinase solution is 60min, and test result is shown in Table 1
It is shown.
Embodiment 3 --- prepare pinus khasys fiber reinforcement type polyvinyl chloride based composites
Embodiment 1 is repeated, with following difference, the processing time of pectinase solution is 90min, and test result is shown in Table 1
It is shown.
Embodiment 4 --- prepare pinus khasys fiber reinforced polypropylene based composites
Embodiment 1 is repeated, with following difference, the processing time of pectinase solution is 120min, and test result is shown in Table 1
It is shown.
Embodiment 5 --- prepare bamboo fiber enhanced polypropylene based composites
Embodiment 1 is repeated, with following difference, biomass reinforcing material is bamboo fiber, and pectinase solution concentration is
0.05%, treatment temperature is 45 DEG C, and processing time is 30min, and test result is shown in Table 1.
Embodiment 6 --- prepare bamboo fiber enhanced polypropylene based composites
Embodiment 1 is repeated, with following difference, biomass reinforcing material is bamboo fiber, and pectinase solution concentration is
0.05%, treatment temperature is 45 DEG C, and processing time is 60min, and test result is shown in Table 1.
Embodiment 7 --- prepare bamboo fiber enhanced polypropylene based composites
Embodiment 1 is repeated, with following difference, biomass reinforcing material is bamboo fiber, and pectinase solution concentration is
0.05%, treatment temperature is 45 DEG C, and processing time is 90min, and test result is shown in Table 1.
Embodiment 8 --- prepare bamboo fiber enhanced polypropylene based composites
Embodiment 1 is repeated, with following difference, biomass reinforcing material is bamboo fiber, and pectinase solution concentration is
0.05%, treatment temperature is 45 DEG C, and processing time is 120min, and test result is shown in Table 1.
Embodiment 9 --- prepare industrial hemp stalk fiber reinforced polypropylene based composites
Embodiment 1 is repeated, with following difference, biomass reinforcing material is industrial hemp stalk fiber, pectinase solution
Concentration is 0.05%, and treatment temperature is 45 DEG C, and processing time is 30min, and test result is shown in Table 1.
Embodiment 10 --- prepare industrial hemp stalk fiber reinforced polypropylene based composites
Embodiment 1 is repeated, with following difference, biomass reinforcing material is industrial hemp stalk fiber, pectinase solution
Concentration is 0.05%, and treatment temperature is 45 DEG C, and processing time is 60min, and test result is shown in Table 1.
Embodiment 11 --- prepare industrial hemp stalk fiber reinforced polypropylene based composites
Embodiment 1 is repeated, with following difference, biomass reinforcing material is industrial hemp stalk fiber, pectinase solution
Concentration is 0.05%, and treatment temperature is 45 DEG C, and processing time is 90min, and test result is shown in Table 1.
Embodiment 12 --- prepare industrial hemp stalk fiber reinforced polypropylene based composites
Embodiment 1 is repeated, with following difference, biomass reinforcing material is bamboo fiber, and pectinase solution concentration is
0.05%, treatment temperature is 45 DEG C, and processing time is 120min, and test result is shown in Table 1.
Table 1
| Sequence number | Title | Water absorption rate 24h（%） | Thickness swelling rate 24h (%) | Bending strength（MPa） | Modulus of elasticity（MPa） | Tensile strength（MPa） |
| 1 | Embodiment 1 | 9.00 | 2.56 | 27.3 | 2574 | 19.9 |
| 2 | Embodiment 2 | 8.94 | 2.85 | 39.5 | 3821 | 19.5 |
| 3 | Embodiment 3 | 10.30 | 3.32 | 39.2 | 3695 | 18.5 |
| 4 | Embodiment 4 | 9.92 | 3.68 | 37.3 | 3717 | 17.6 |
| 5 | Embodiment 5 | 9.72 | 2.84 | 38.4 | 3992 | 18.2 |
| 6 | Embodiment 6 | 25.83 | 5.37 | 37.2 | 3938 | 19.5 |
| 7 | Embodiment 7 | 15.42 | 3.60 | 35.6 | 3592 | 18.1 |
| 8 | Embodiment 8 | 17.24 | 4.07 | 41.4 | 4002 | 20.4 |
| 9 | Embodiment 9 | 25.51 | 5.70 | 39.6 | 4183 | 23.2 |
| 10 | Embodiment 10 | 26.41 | 6.50 | 37.1 | 4256 | 23.0 |
| 11 | Embodiment 11 | 28.67 | 6.63 | 31.7 | 3908 | 20.5 |
| 12 | Embodiment 12 | 27.16 | 7.03 | 36.8 | 4140 | 22.9 |
As shown in Table 1, it is only 0.80g/cm in density after pectinase solution is handled3Under conditions of, with three kinds of lifes
Material is composite its MOR, tensile strength and the bullet that fiber and polypropylene composite materials prepared by raw material are prepared from
Property modulus reached high strength composite standard requirement.
Claims (9)
1. a kind of high-intensity wood plastic composite, it is characterised in that described high-intensity wood plastic composite includes wooden, non-wood
Matter or bamboo fiber reinforced plastics composite or wooden, non-wood or the enhanced wood plastic composite of bamboo wood powder, wooden,
Non-wood or bamboo fiber or wooden, non-wood or bamboo wood powder have passed through the processing of pectinase solution；It is described it is wooden,
Non-wood or bamboo fiber or wooden, non-wood or the mass percent of bamboo wood powder are 5~80%, and remaining is plastics；
Wherein, the wooden, non-wood or bamboo wood powder are directly to be ground crushing using grinder to be made；
The wooden, non-wood or bamboo fiber are the wood material wood chip, non-wood material particle or bamboo wood by that will prepare
Bamboo chip 15~120min of boiling at 100~180 DEG C of temperature, it is rear to recycle high concentration disc mill to handle the wood after boiling
What matter, non-wood or bamboo chip particle were obtained.
2. high-intensity wood plastic composite according to claim 1, it is characterised in that for enhanced wooden, non-wood or
Bamboo fiber or wooden, non-wood or bamboo wood powder also need to be handled using pectinase solution, and the concentration of pectase is
0.01%-5.0%, processing time is 30-120min, and treatment temperature is 30-50 DEG C.
3. high-intensity wood plastic composite according to claim 1 also including mass percent 0.1~5% coupling agent and
The lubricant of mass percent 1~10%.
4. high-intensity wood plastic composite according to claim 1, it is characterised in that described plastics are thermoplastics,
For one kind in polyethylene, polypropylene, high density polyethylene (HDPE), polyvinyl chloride.
5. high-intensity wood plastic composite according to claim 2, it is characterised in that the pectase is protopectinase, fruit
Glue esterase.
6. high-intensity wood plastic composite according to claim 3, it is characterised in that described coupling agent is acetic acid esters, horse
Come acid anhydrides, silane, isocyanates, dicumyl peroxide, Aluminate, ethylene-acrylate, titanate esters, phosphate, the coupling of magnesium class
One kind in agent, tin class coupling agent or chromium complex.
7. high-intensity wood plastic composite according to claim 3, it is characterised in that described lubricant be zinc stearate,
One kind in calcium carbonate, polyester wax, stearic acid, lead stearate, Tissuemat E, paraffin, OPE.
8. a kind of preparation method of any described high-intensity wood plastic composite of claim 1~7 is characterized in that including step
Suddenly (one) raw material is chipped, fiber is prepared or powder preparation, pectinase treatment, raw material drying, raw material mixing, plate forming, sheet material
Post processing and performance test step, are specifically included：
A, raw material are chipped：Wood material, non-wood material or bamboo wood moisture content are adjusted to 30~50%, length is made through wood chipping equipment
18~20mm, 15~18mm of width, 4~5mm of thickness wood chip, bamboo chip, non-wood material particle are standby；
Prepared by B, fiber or prepared by powder：By the wood material wood chip prepared, non-wood material particle or bamboo wood bamboo chip in temperature
15~120min of boiling at 100~180 DEG C of degree, then recycles high concentration disc mill to wooden, the non-wood after boiling
Or bamboo chip particle is prepared into fiber；Or directly utilize the raw material wood chip prepared, non-wood material particle or bamboo wood bamboo chip
Grinder is ground crushing, is prepared into powder；
C, pectinase treatment：The fiber prepared or powder stock are handled using pectinase solution, the concentration of pectase
For 0.01%-5.0%, processing time is 30-120min, and treatment temperature is 30-50 DEG C；
D, raw material drying：Fiber or powder after pectinase solution is handled is done under the conditions of 140-180 DEG C of temperature
Dry, drying time is 5s-10min, dries to moisture content and is less than 1%；
E, mixed-forming：Dried fiber and plastics by formula be mixed to get to the mixture of fiber and plastics, through into
Target composite is obtained after type；
F, sheet material post processing：Target composite after overmolding needs to carry out under the conditions of humidity 60%, 25-30 DEG C of temperature
Processing, processing time is 24-36h；
G, performance test：Sheet material by post processing is tested according to certain testing standard, it is qualified after tested after sheet material
Package Testing is carried out, underproof material carries out secondary operation again.
9. preparation method according to claim 8, it is characterised in that described to be shaped to utilize concora crush, extruding or die pressing
The mixture of described wooden, non-wood or bamboo fiber or powder and plastics is molded under the conditions of 110~180 DEG C,
Obtain target composite；
Wherein described non-wood is crop branch fiber.
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| CN105566933A (en) * | 2016-01-29 | 2016-05-11 | 安徽以诺木塑板材科技有限公司 | Wood-plastic floor for basketball court |
| CN106240221A (en) * | 2016-08-02 | 2016-12-21 | 浙江长兴森大竹木制品有限公司 | A kind of light weight high-strength bamboo Wood Fiber Composite dalle |
| CN106426427A (en) * | 2016-08-02 | 2017-02-22 | 浙江长兴森大竹木制品有限公司 | High-toughness bamboo and wood fiber composite decoration plate |
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| CN108166070B (en) * | 2017-12-25 | 2019-08-30 | 福建农林大学 | A kind of preparation method of short bamboo fiber |
| CN109572122A (en) * | 2018-11-15 | 2019-04-05 | 成都市银隆新能源有限公司 | Aluminum plastic film staple fiber laminated film and preparation method thereof |
| CN110341018A (en) * | 2019-07-05 | 2019-10-18 | 安徽温禾新材料科技股份有限公司 | A kind of wood floors production technology |
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