CN106280185A - A kind of light wood-plastic composite fiber plate and preparation method thereof - Google Patents

A kind of light wood-plastic composite fiber plate and preparation method thereof Download PDF

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Publication number
CN106280185A
CN106280185A CN201510256689.9A CN201510256689A CN106280185A CN 106280185 A CN106280185 A CN 106280185A CN 201510256689 A CN201510256689 A CN 201510256689A CN 106280185 A CN106280185 A CN 106280185A
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wood
fiber
wood fiber
plastic composite
activation
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张扬
唐睿琳
于志明
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Beijing Forestry University
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Beijing Forestry University
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Abstract

The invention discloses a kind of light wood-plastic composite fiber plate and preparation method thereof, this wood plastics composite fibre board is made up of hot grinding wood fiber, high density polyethylene (HDPE), foaming agent and other additives.The wood fiber content of product is 60~70%, and average density is 800~900kg/m3, average pore size is less than 50 μm, and porosity is 20%~30%.First the wood fiber is carried out alkali activation and isocyanates grafting processes, then innovation wood fiber, polyethylene, foaming agent and other auxiliary agents are mixed pelletize, moulded from foam through height and quickly cools down.This wood plastics composite fibre board, with fibre board and the advantage of wood plastic composite, has the advantage such as good stability of the dimension, the ratio of strength to weight is high, shock resistance is good, anticorrosion, anti-insect, sound insulation and insulation.Product applications of the present invention is wide, can be applicable to the fields such as decoration, building, floor, municipal administration, packaging, automotive upholstery.

Description

A kind of light wood-plastic composite fiber plate and preparation method thereof
Technical field
The present invention relates to a kind of wood plastic composite and manufacture method thereof, particularly a kind of light wood-plastic composite fiber plate and preparation method thereof, belong to field of compound material.
Background technology
Wood plastic composite is that to use wood powder and hot-melt plastic be composite prepared by primary raw material, there is a series of property being better than timber and plastics: have the secondary workability of wood appearance and similar wood, but dimensional stability is better than timber, and water absorption is little, be not afraid of and damage by worms, will not produce crack and buckling deformation as timber;There is the processability of thermoplastic, but hardness ratio plastics are high, wear-resisting, ageing-resistant, corrosion-resistant.There is the advantages such as excellent resistance to water, dimensional stability and reusable edible.But owing to its density is relatively big, plastic content is higher, production cost is far above wood materials, is unfavorable for that it replaces wood materials.
In order to reduce the density of wood plastic composite, by using foaming agent to be incorporated in wood plastic composite by the least abscess, the fine foaming wood plastic composite materials of formation.Fine foaming wood plastic composite materials, in addition to possessing the advantage of normal wood plastic composite materials, can be passivated crack tip because material internal exists good foam structure, stop the extension of crackle;Thus can, ductility big efficiently against common wood-plastic composite fragility and the low shortcoming of shock resistance stress, and reduce the density of material, not only conservation, and sound insulation, heat-proof quality are preferable.Extremely wide application is obtained at aspects such as building structural materials, automotive trim, space flight, logistics, gardens, indoor decorations.
At present, research and the application of numerous fine foaming wood plastic composite materials are occurred in that, such as: the patent of invention of Publication No. CN102229728A, polrvinyl chloride, nano imvite, Paris white, white oil, heat stabilizer, mica powder are stirred evenly rear extruding pelletization, obtains modified plastics particle;Again it is stirred evenly with wood powder, azodicarbonamide, foaming control agent, chlorinated polyethylene, UV absorbent, extruded, foaming fine foaming wood-plastic sheet material.
The patent of invention of Publication No. CN103554626A, discharging is cooled down after matrix polyvinyl resin, modified wollastonite powder and Pulvis Talci, cross-linking agent, lubricant, thermal equilibrium type foaming agent, antioxidant, ultraviolet (UV) resistant agent, pigment, modified plant fibers stirring intensification, mix homogeneously, prepare premix material, modified plant fibers one or more mixture constituted with arbitrary proportion in wood powder, bamboo powder, powdered rice hulls;Premix material is put into pelletize in extruder, extrusion foaming, cooling and shaping.
The patent of invention of Publication No. CN1948384, by Corvic, sanding powder, chemistry (AC) foaming agent, the various processing aid such as plasticizer, blowing promotor, the mix homogeneously in high-speed mixer in proportion by each component, extruding pelletization in single screw extrusion machine or double screw extruder, the granule of preparation is shaped to the fine foaming wood-plastic composite product of a kind of continuous uniform foaming by single, double screw extruder and foaming mould.
The patent of invention of Publication No. CN102167872A, this wood plastic composite consists of: polrvinyl chloride, wood powder, light active calcium carbonate, foaming agent, foaming stabiliser, Tissuemat E, titanate coupling agent, chlorinated polyethylene, adsorbent nano calcium oxide, blowing promotor nano zine oxide, silicone processing aid, reinforcing fiber alkali-free glass fibre.First by after wood powder and nano oxidized calcium powder mixed at high speed, adding mixed at high speed after titanate coupling agent, be eventually adding rest materials, after mixed at high speed, then obtain premix material through mixed on low speed, extruded machine is extruded, is cooled down rapidly.
But above-mentioned patent is all to use wood powder as filler, and wood powder content is below 40%, and product cost is higher;And wood powder is all graininess, wood powder fiber is the most destroyed, and intensity declines;All using extrusion molding to produce, the breadth of product is less, be not suitable for high wood mould than the production of wood plastic composite.
Summary of the invention
It is an object of the invention to provide a kind of light wood-plastic composite fiber plate and preparation method thereof for above problem of the prior art, light wood-plastic composite fiber plate prepared by the present invention is to use the wood fiber, and through alkali activation, isocyanates grafting processes, height mixes pelletize, moulded from foam and cooling and produces and form.This light wood-plastic composite fiber plate has the advantages such as timber content height, ratio of strength to weight height, good stability of the dimension, shock resistance height, insulation and sound insulation value are good.
For realizing the purpose of the present invention, one aspect of the present invention provides a kind of light wood-plastic composite fiber plate, and sheet metal thickness is 3 ~ 20mm, and width is 50 ~ 2240 mm, and density is 700 ~ 900 kg/m3
Wherein, described light wood-plastic composite fiber plate, it is characterized in that the wood fiber be the 50 ~ 70% of raw material gross weight, high density polyethylene (HDPE) be 30 ~ 50%, DOP plasticizer be 0.2 ~ 1.0%, maleic anhydride grafted polyethylene be 0.5 ~ 2.0%, AC foaming agent 0.5 ~ 1.5%, dibasic lead phosphite 3 ~ 8%;
Particularly, the wood fiber is the wood fiber that hot-mill method is produced, and the average length of the wood fiber is 0.8 ~ 1.2 mm, draw ratio is 40 ~ 45;Sheet material has uniform foam structure;
Especially, the described wood fiber is the fast growing wood wood fiber, preferably poplar, Masson Pine, Eucalyptus composite fibre, more preferably poplar, Masson Pine;The average pore size of described foam structure is 10% ~ 30% less than 50 μm, porosity, and more preferably average pore size is 10% ~ 20% less than 30 μm, porosity.
On the other hand the preparation method of a kind of light wood-plastic composite fiber plate is provided, the step carried out including order below:
1) activation processing of the wood fiber
The wood fiber is mixed with water, activator, controls mixed activator levels and fiber moisture, be then placed in drying baker, control activation temperature and the wood fiber is carried out activation processing, be dried to over dry;
2) grafting of the wood fiber processes
The wood fiber after activation is sprayed isocyanates acetone soln, puts into roller drier and make cured with isocyanates;
3) high mixed process
Successively the wood fiber of modification, high density polyethylene (HDPE), DOP plasticizer, maleic anhydride grafted polyethylene, AC foaming agent, dibasic lead phosphite are added high mixer and stir 15 ~ 30 minutes;
4) extruding pelletization
Height material after mixed is put into extruder and carries out extruding pelletization, obtain wood plastic composite premix material, in order to make batch mixing uniform, extrusion 2-3 time repeatedly;
5) mold, cool down
In grinding tool, put into processing release paper, premix pellet is joined in mould, then cover processing release paper at upper surface, control in uniform temperature, be forced into setting pressure and keep certain time, making scattered premix material clinkering become close material, be cooled to room temperature and make it shape.
Wherein, during activator described in step 1) selects alkali lignin, sodium hydroxide or sodium carbonate one or more;
Particularly, in the wood fiber, activator levels is 2% ~ 10%, preferably 2% ~ 5%;
Especially, before activation, fiber moisture is 50% ~ 100%, preferably 80% ~ 100%;Activation temperature is 100 DEG C ~ 180 DEG C, preferably 150 ~ 170 DEG C.
Wherein, step 2) described in isocyanates gluing agent select 4, one in 4 one '-diphenylmethane diisocyanates, dimethyl triphenyl methane tetraisocyanate, aquosity polymer isocyanic ester adhesion agent, it is preferably isocyanates gluing agent and selects the one in 4,4 one '-diphenylmethane diisocyanates, dimethyl triphenyl methane tetraisocyanate;
Particularly, isocyanate glue is the 0.5% ~ 2% of wood fiber oven-dry weight, preferably 1% ~ 1.5%;
Wherein, the wood fiber described in step 3) be the 50 ~ 70% of raw material gross weight, high density polyethylene (HDPE) be 30 ~ 50%, DOP plasticizer be 0.2 ~ 1.0%, maleic anhydride grafted polyethylene, AC foaming agent 0.5 ~ 1.5%, dibasic lead phosphite 3 ~ 8%.
Particularly, in step 3), the operating temperature of high mixer is 80 ~ 180 DEG C, preferably 160 ~ 180 DEG C;Stir speed (S.S.) is 500 ~ 1000 revs/min, preferably 800 ~ 1000 revs/min.
Wherein, extruder described in step 4) can be single screw extruder, can also be Twin screw extruder;
Particularly, extruder temperature is at 140 ~ 180 DEG C, and rotating speed is 50 ~ 100 revs/min.
Wherein, during processing release paper described in step 5) is PES, PET, PTFE one or more;Molding temperature is 160 ~ 220 DEG C, preferably 180 ~ 200 DEG C;Clamp time is the hot pressing time that 10 ~ 40 seconds/min(every millimeter becomes needed for plate), preferably 15 ~ 20 s/mm;Pressure is 4 ~ 7 MPa.
Particularly, in hot pressing pressure, compression section pressure is 4 ~ 5Mpa, preferably 4.5 ~ 5Mpa;Heat transfer segment pressure is 0.8 ~ 1.5Mpa, preferably 1.0 ~ 1.5Mpa;Fixed thick section pressure is 1 .5 ~ 2.5Mpa, preferably 2.0 ~ 2.5Mpa.
The MDI lightweight high-strength fiber board of the present invention has the advantage that
1 fine foaming wood-plastic composite fiber plate is to use hot grinding wood fiber and plastic warp height to mix pelletize and composite wooden material that moulded from foam is produced, the advantage having fibre board and wood plastic composite concurrently, cost performance is high, of many uses, is the environment-friendly type new material of a kind of reusable edible.
2 compared with general fibre plate, and fine foaming wood-plastic composite fiber plate plastics replace urea-formaldehyde glue to stick agent, the problem being possible not only to reduce formaldehyde pollution, it is also possible to improve the dimensional stability of fibre board, anticorrosive, anti-insect.
3 compared with normal wood plastic composite materials, and fine foaming wood-plastic composite fiber plate uses the wood fiber to replace wood powder, improves the intensity of sheet material;The fretting map technology used gives sheet material loose structure, not only reduces average density and the production cost of sheet material, also improves the sound insulation of material, insulation and shock resistance.
Accompanying drawing explanation
Fig. 1 is light wood-plastic composite fiber plate physicochemical property test result.
Detailed description of the invention
Below in conjunction with specific embodiment further describe the present invention, advantages of the present invention and feature will be with describe and apparent.But these embodiments are only exemplary, the scope of the present invention is not constituted any restriction.It will be understood by those skilled in the art that and the details of technical solution of the present invention and form can be modified or replace lower without departing from the spirit and scope of the present invention, but these amendments and replacement each fall within protection scope of the present invention.
The embodiment of the present invention is to produce thickness be 12 ± 0.5mm, average density is for 750 ± 20Kg/m3Finished product wood plastics composite fibre board as a example by illustrate, wherein wood fiber raw material derive from the Masson Pine taken out on the mdf production line of in December, 2014 Beijing company and the average length of poplar composite fibre, the wood fiber be 0.8 ~ 1.2 mm, draw ratio be 40 ~ 45.
Embodiment 1
1) activation processing of the wood fiber
Deionized water and activator are mixed, spray nozzle and blender is utilized uniformly to spray activator on the wood fiber, to make activator levels in the wood fiber containing activator be 5%, moisture content is 70%, it is then placed in drying baker, when activation temperature is 160 DEG C, the wood fiber is carried out activation processing, when the wood fiber be dried to moisture content be 1% time,;
2) grafting of the wood fiber processes
The wood fiber after activation is sprayed dimethyl triphenyl methane isocyanates acetone soln, and resin added is 1.5%, puts into roller drier and makes cured with isocyanates;
3) high mixed process
The wood fiber after modification, high density polyethylene (HDPE), DOP plasticizer, maleic anhydride grafted polyethylene, AC foaming agent, dibasic lead phosphite are added high mixer in the ratio of 6:3:0.1:0.1:0.1:0.7, temperature be 160 DEG C, stir speed (S.S.) be 800 revs/min under the conditions of stir 20 minutes;
4) extruding pelletization
Height material after mixed is put into single screw extruder, temperature be 160 DEG C, stir speed (S.S.) be 80 revs/min under the conditions of carry out extruding pelletization, obtain wood plastic composite premix material, in order to make batch mixing uniform, extrusion 2-3 time repeatedly;
5) mold, cool down
PTFE processing release paper is put in grinding tool, premix pellet is joined in mould, processing release paper is covered again at upper surface, molding temperature be 190 DEG C, clamp time be the hot pressing time that 20 seconds/min(every millimeter becomes needed for plate) under the conditions of, hot pressing pressure use in compression section pressure be 5Mpa, heat transfer segment pressure be 1.0 Mpa, fixed thick section pressure be 2.0Mpa, make scattered premix material clinkering become close material, be cooled to room temperature in constant-pressure conditions and make it shape.
The physical and mechanical property detection of sheet material is with reference to GB/T17657-1999 " test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels ", GB/T10294-2008 " Technology of Steady State Thermal Resistance of Thermal Insulating Material and the mensuration about characteristic ", GB/T18696.1-2004 " in acoustic impedance pipe the measurement Part I of acoustic absorptivity and acoustic impedance: standing-wave ratio method ", and testing result is shown in Fig. 1.
Embodiment 2
1) activation processing of the wood fiber
Deionized water and activator are mixed, spray nozzle and blender is utilized uniformly to spray activator on the wood fiber, to make activator levels in the wood fiber containing activator be 5%, moisture content is 70%, it is then placed in drying baker, when activation temperature is 160 DEG C, the wood fiber is carried out activation processing, when the wood fiber be dried to moisture content be 1% time,;
2) grafting of the wood fiber processes
The wood fiber after activation is sprayed dimethyl triphenyl methane isocyanates acetone soln, and resin added is 1%, puts into roller drier and makes cured with isocyanates;
3) high mixed process
The wood fiber after modification, high density polyethylene (HDPE), DOP plasticizer, maleic anhydride grafted polyethylene, AC foaming agent, dibasic lead phosphite are added high mixer in the ratio of 6:3:0.15:0.15:0.1:0.6, temperature be 160 DEG C, stir speed (S.S.) be 800 revs/min under the conditions of stir 20 minutes;
4) extruding pelletization
Height material after mixed is put into single screw extruder, temperature be 170 DEG C, stir speed (S.S.) be 70 revs/min under the conditions of carry out extruding pelletization, obtain wood plastic composite premix material, in order to make batch mixing uniform, extrusion 2-3 time repeatedly;
5) mold, cool down
PTFE processing release paper is put in grinding tool, premix pellet is joined in mould, processing release paper is covered again at upper surface, molding temperature be 190 DEG C, clamp time be the hot pressing time that 20 seconds/min(every millimeter becomes needed for plate) under the conditions of, hot pressing pressure use in compression section pressure be 4.5Mpa, heat transfer segment pressure be 1.0 Mpa, fixed thick section pressure be 2.5Mpa, make scattered premix material clinkering become close material, be cooled to room temperature in constant-pressure conditions and make it shape.
The physical and mechanical property detection of sheet material is with reference to GB/T17657-1999 " test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels ", GB/T10294-2008 " Technology of Steady State Thermal Resistance of Thermal Insulating Material and the mensuration about characteristic ", GB/T18696.1-2004 " in acoustic impedance pipe the measurement Part I of acoustic absorptivity and acoustic impedance: standing-wave ratio method ", and testing result is shown in Fig. 1.
Embodiment 3
The physical and mechanical property detection of sheet material is with reference to GB/T17657-1999 " test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels ", GB/T10294-2008 " Technology of Steady State Thermal Resistance of Thermal Insulating Material and the mensuration about characteristic ", GB/T18696.1-2004 " in acoustic impedance pipe the measurement Part I of acoustic absorptivity and acoustic impedance: standing-wave ratio method ", and testing result is shown in Fig. 1.
Matched group 1
Comparing with embodiment 1, the step for of reducing the activation processing of the wood fiber, other techniques are consistent with embodiment 1 with formula.
The physical and mechanical property detection of sheet material is with reference to GB/T17657-1999 " test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels ", GB/T10294-2008 " Technology of Steady State Thermal Resistance of Thermal Insulating Material and the mensuration about characteristic ", GB/T18696.1-2004 " in acoustic impedance pipe the measurement Part I of acoustic absorptivity and acoustic impedance: standing-wave ratio method ", and testing result is shown in Fig. 1.
Matched group 2
Comparing with embodiment 1, the step for that the grafting of the minimizing wood fiber processing, other techniques are consistent with embodiment 1 with formula.
The physical and mechanical property detection of sheet material is with reference to GB/T17657-1999 " test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels ", GB/T10294-2008 " Technology of Steady State Thermal Resistance of Thermal Insulating Material and the mensuration about characteristic ", GB/T18696.1-2004 " in acoustic impedance pipe the measurement Part I of acoustic absorptivity and acoustic impedance: standing-wave ratio method ", and testing result is shown in Fig. 1.
Matched group 3
Comparing with embodiment 1, without AC foaming agent in the mixed process of height, other techniques are consistent with embodiment 1 with formula.
The physical and mechanical property detection of sheet material is with reference to GB/T17657-1999 " test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels ", GB/T10294-2008 " Technology of Steady State Thermal Resistance of Thermal Insulating Material and the mensuration about characteristic ", GB/T18696.1-2004 " in acoustic impedance pipe the measurement Part I of acoustic absorptivity and acoustic impedance: standing-wave ratio method ", and testing result is shown in Fig. 1.
Reference examples 4
Comparing with embodiment 1, select the poplar wood powder of 100 mesh to replace the wood fiber, other techniques are consistent with embodiment 1 with formula.
The physical and mechanical property detection of sheet material is with reference to GB/T17657-1999 " test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels ", GB/T10294-2008 " Technology of Steady State Thermal Resistance of Thermal Insulating Material and the mensuration about characteristic ", GB/T18696.1-2004 " in acoustic impedance pipe the measurement Part I of acoustic absorptivity and acoustic impedance: standing-wave ratio method ", and testing result is shown in Fig. 1.
Reference examples 5
Testing result shows:
1) the wood plastics composite fibre board that prepared by the present invention has the advantages that intensity is high, and MOR reaches 38.9 ~ 42.4MPa, and elastic modelling quantity reaches 3.8 ~ 4.2GPa;
2) wood plastics composite fibre board heat-insulating property and the sound insulation value that prepared by the present invention are good, and heat conductivity is 0.055 ~ 0.065 W/mK, and acoustic absorptivity is 0.65 ~ 0.70, is superior to normal wood plastic composite materials and fibre board;
The light wood-plastic composite fiber plate using this technology to produce is substantially absent from formaldehyde pollution, and physical and mechanical property all exceedes the requirement to the wood plastic composite in common medium density fibre board (MDF) and LY/T1616-2004 of GB GB/T11718-2009.

Claims (8)

1. the present invention relates to a kind of light wood-plastic composite fiber plate and preparation method thereof, sheet metal thickness is 3 ~ 20mm, and average density is 700 ~ 900 kg/m3, average pore size is less than 50 μm, and porosity is 10% ~ 30%.
2. light wood-plastic composite fiber plate as claimed in claim 1, the wood fiber content of product is 50 ~ 70%, it is characterized in that the wood fiber is the wood fiber that hot-mill method is produced, and average length is 0.8 ~ 1.2 mm, draw ratio is 40 ~ 45.
3. a preparation method for MDI lightweight high-strength fiber board, the step carried out including order below:
1) activation processing of the wood fiber
The wood fiber is mixed with water, activator, controls mixed activator levels and fiber moisture, be then placed in drying baker, control activation temperature and the wood fiber is carried out activation processing, be dried to over dry,;
2) grafting of the wood fiber processes
The wood fiber after activation is sprayed isocyanates acetone soln, puts into roller drier and make cured with isocyanates;
3) high mixed process
Successively the wood fiber of modification, high density polyethylene (HDPE), DOP plasticizer, maleic anhydride grafted polyethylene, AC foaming agent, dibasic lead phosphite are added high mixer and stir 15 ~ 30 minutes;
4) extruding pelletization
Height material after mixed is put into extruder and carries out extruding pelletization, obtain wood plastic composite premix material, in order to make batch mixing uniform, extrusion 2-3 time repeatedly;
5) mold, cool down
In grinding tool, put into processing release paper, premix pellet is joined in mould, then cover processing release paper at upper surface, control in uniform temperature, be forced into setting pressure and keep certain time, making scattered premix material clinkering become close material, be cooled to room temperature and make it shape.
4. preparation method as claimed in claim 3, is characterized in that activator described in step 1) selects one or more in alkali lignin, sodium hydroxide or sodium carbonate;In the wood fiber, activator levels is 2% ~ 10%;Before activation, fiber moisture is 50% ~ 100%;Activation temperature is 100 DEG C ~ 180 DEG C.
5. preparation method as claimed in claim 3, it is characterized in that step 2) described in isocyanates gluing agent select 4, one in 4 one '-diphenylmethane diisocyanates, dimethyl triphenyl methane tetraisocyanate, aquosity polymer isocyanic ester adhesion agent, isocyanate glue is the 0.5% ~ 2% of wood fiber oven-dry weight.
6. preparation method as claimed in claim 3, it is characterized in that the wood fiber described in step 3) be the 50 ~ 70% of raw material gross weight, high density polyethylene (HDPE) be 30 ~ 50%, DOP plasticizer be 0.2 ~ 1.0%, maleic anhydride grafted polyethylene 0.5 ~ 2.0%, AC foaming agent 0.5 ~ 1.5%, dibasic lead phosphite 3 ~ 8%.
7. preparation method as claimed in claim 3, is characterized in that extruder described in step 4) can be single screw extruder, it is also possible to being Twin screw extruder, extruder temperature is at 140 ~ 180 DEG C.
8. preparation method as claimed in claim 3, is characterized in that processing release paper described in step 5) is one or more in PES, PET, PTFE;Molding temperature is 160 ~ 220 DEG C, and clamp time is 10 ~ 40 seconds/min, and pressure is 4 ~ 7 MPa.
CN201510256689.9A 2015-05-20 2015-05-20 A kind of light wood-plastic composite fiber plate and preparation method thereof Pending CN106280185A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107057174A (en) * 2017-04-17 2017-08-18 浙江元森态木塑科技股份有限公司 A kind of preparation method of the elastic plastic-wood composite floor capstock with vermins-proof effect
CN107082926A (en) * 2017-04-17 2017-08-22 浙江元森态木塑科技股份有限公司 A kind of preparation method of the hard plastic-wood composite floor capstock with vermins-proof effect
CN110593483A (en) * 2019-09-19 2019-12-20 大亚人造板集团有限公司 Manufacturing method of light environment-friendly composite wallboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107057174A (en) * 2017-04-17 2017-08-18 浙江元森态木塑科技股份有限公司 A kind of preparation method of the elastic plastic-wood composite floor capstock with vermins-proof effect
CN107082926A (en) * 2017-04-17 2017-08-22 浙江元森态木塑科技股份有限公司 A kind of preparation method of the hard plastic-wood composite floor capstock with vermins-proof effect
CN110593483A (en) * 2019-09-19 2019-12-20 大亚人造板集团有限公司 Manufacturing method of light environment-friendly composite wallboard

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