CN102731951B - Co-extrusion formed wood-plastic composite plate and preparation method thereof - Google Patents
Co-extrusion formed wood-plastic composite plate and preparation method thereof Download PDFInfo
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- CN102731951B CN102731951B CN201210248526.2A CN201210248526A CN102731951B CN 102731951 B CN102731951 B CN 102731951B CN 201210248526 A CN201210248526 A CN 201210248526A CN 102731951 B CN102731951 B CN 102731951B
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Abstract
The invention discloses a co-extrusion formed wood-plastic composite plate and a preparation method thereof, which discloses a composite material, a structural material and the preparation method of the materials. The co-extrusion formed wood-plastic composite plate is composed of an anti-aging resin layer and a wood-plastic structural layer, wherein the anti-aging resin layer is located on the surface of the wood-plastic structural layer. The anti-aging resin layer is formed by melting, blending and extruding an ASA (Acrylonitile-Styrene-Acrylate) resin, titanium dioxide, an antioxidant and a light stabilizer; and the wood-plastic structural layer is formed by extruding polyethylene, wood power, calcium powder, a rare-earth coupling agent, chlorinated polyethylene, acrylic resin, polyethylene wax, octyl stearate and ethylene bis stearamide. Different molten material flows are formed by the anti-aging resin layer and the wood-plastic structural layer, and then the material flows are converged in a compound machine head and co-extruded by a neck mould, so that the co-extrusion formed wood-plastic composite plate is prepared. Besides the characteristics of multiple purposes of common wood-plastic plates, the wood-plastic plate has more excellent anti-aging property and does not age after a long use in the open air. The co-extrusion formed wood-plastic composite plate disclosed by the invention is suitable for preparing indoor and outdoor floors, guardrails, decorative sheets and the like.
Description
Technical field
What a kind of coextrusion mold wood plastic composite board of the present invention and preparation method thereof related to is a kind of matrix material, a kind of structured material and preparation method thereof, is applicable to the inside and outside floor of make-up room, guardrail, decorative sheet etc.
Background technology
Wood plastic composite is to add a small amount of chemical additive and filler, a kind of matrix material of making through special-purpose compounding apparatus processing with plastics and xylon natural fibers such as (or) rice husks, wheat straw, corn stalk, Pericarppium arachidis hypogaeae.It has both the principal feature of plastics and timber, can be at many occasion substituted for plastic and timber, it has higher intensity and hardness, not easy to wear, acid and alkali-resistance, indeformable, not containing formaldehyde, easily reclaim, can be made into various section shape and sizes, can produce as required different colours, the features such as long service life, can be widely used as outdoor flooring, swimming pool bound edge, flower case, tree pond, hedge, refuse container, sun visor, seat stool, chair bar, backrest bar, leisure tabletop, direction board, propaganda board, crossbeam, harbour bed board, passage waterborne, handrail, guardrail, fence, cut off, flower stand corridor, outdoor wayside pavilion, sun deck, bathroom plate, sash cover, acoustic panel, top board etc.Though but so, Wood plastic composite in use also exists some obviously not enough, as current Wood plastic composite on the market directly mixes the protective agents such as oxidation inhibitor mostly with wood powder, polyolefine, then extrude and prepare wood plastic composite board, the result of doing like this, often cause the ratio of the protective agent such as oxidation inhibitor in Wood plastic composite on the low side, in use, can not be ageing-resistant well, thereby cause surface discolouration, cracking, both affect its outward appearance, and also can shorten its work-ing life, thereby defined its use range; If strengthen protective agent consumption, on the one hand, may affect other performances of Wood plastic composite, meanwhile, also can make to mould Wood products price and improve by a relatively large margin.So, traditional Wood plastic composite is carried out to modification, do not increasing on the basis of cost, improve its anti ageing property just very necessary.
Summary of the invention
The object of the invention is to invent a kind of coextrusion mold wood plastic composite board and preparation method thereof, this wood plastic composite board is except having the multi-usage feature of general wood plastic composite board, there is better ageing-resistant performance, can use out of doors for a long time and not occur aging.
A kind of coextrusion mold wood plastic composite board and preparation method thereof takes following scheme to realize:
A kind of coextrusion mold wood plastic composite board consists of ageing-resistant resin layer and Wood plastic composite structural sheet, and ageing-resistant resin layer is positioned at the surface of Wood plastic composite structural sheet.
Ageing-resistant resin layer is extruded and is formed through melt blending by ASA (vinylformic acid-styrene-acrylonitrile copolymer) resin, nano titanium oxide, oxidation inhibitor, photostabilizer; Wood plastic composite structural sheet is formed through extruding by polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide.
Described a kind of coextrusion mold wood plastic composite board is that ageing-resistant resin layer and Wood plastic composite structural sheet form respectively different melting charge stream, converges, per os mould is co-extruded in a composite machine head.
Described nano titanium oxide particle diameter is 20-40nm.
Described oxidation inhibitor is one or both in the positive octadecanol ester of β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid, butyl hydroxy toluene, four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester.
Described photostabilizer is that commercially available model is the photostabilizer of TINUVIN 783, is poly-{ 6-[(1,1,3,3-tetramethyl butyl) amino]-1,3,5-triazine-2,4-two [(2,2,6,6-tetramethyl-piperidyl) imino-] } and succinic acid and 4-hydroxyl-2, the composite synergistic stabilizer of polymer of 2,6,6-tetramethyl--1-piperidine alcohols.
Described calcium powder is light calcium carbonate powder, size 1000-2000 order.
Described wood powder particle diameter is 60-100 order.
Described rare-earth coupling agent is that model is ST-1 type rare-earth coupling agent.
A kind of coextrusion mold wood plastic composite board and preparation method thereof, its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, extrusion temperature 160-180 ℃:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, extrusion temperature 170-190 ℃:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.Die temperature 165-185 ℃, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
A kind of coextrusion mold wood plastic composite board of the present invention is reasonable in design, simple in structure, it is convenient to manufacture, compare with other wood plastic composite boards, a kind of coextrusion mold wood plastic composite board is owing to having taked coextrusion process, various protective agents are enriched in surperficial anti-aging resin layer, thereby improved the content of upper layer protective agent, when this type of sheet material is during in outdoor application, can more effectively prevent thermo-oxidative ageing, ultraviolet light and aging etc., extend the work-ing life of sheet material, meanwhile, can improve the finishing performance of wood plastic composite board.
Accompanying drawing explanation
Below with reference to accompanying drawing, the invention will be further described:
Fig. 1 is a kind of coextrusion mold wood plastic composite board structural representation.
The ageing-resistant resin layer of 1-, 2-Wood plastic composite structural sheet, 3-ASA resin, 4-nano titanium oxide, 5-oxidation inhibitor, 6-photostabilizer, 7-polyethylene, 8-wood powder, 9-calcium powder, 10-rare-earth coupling agent, 11-chlorinatedpolyethylene, 12-acrylic resin, 13-polyethylene wax, 14-octyl stearate, 15-ethylene bis stearic acid amide.
Embodiment
With reference to accompanying drawing 1, a kind of coextrusion mold wood plastic composite board consists of ageing-resistant resin layer 1 and Wood plastic composite structural sheet 2, and ageing-resistant resin layer 1 is positioned at Wood plastic composite structural sheet 2 surfaces; Ageing-resistant resin layer 1 mixes the ageing-resistant resin layer melting charge of rear employing extruder for shaping by ASA resin 3, nano titanium oxide 4, oxidation inhibitor 5 and photostabilizer 6 and flows, extrusion temperature 160-180 ℃; Wood plastic composite structural sheet 2 mixes second extruder for shaping Wood plastic composite structural sheet melting charge of rear employing by polyethylene 7, wood powder 8, calcium powder 9, rare-earth coupling agent 10, chlorinatedpolyethylene 11, acrylic resin 12, polyethylene wax 13, octyl stearate 14 and ethylene bis stearic acid amide 15 and flows, extrusion temperature 170-190 ℃; Ageing-resistant resin layer, Wood plastic composite structural sheet are formed to different melting charge stream stacks while hot, in a composite machine head, converge, per os mould coextrusion mold obtain surface for ageing-resistant resin layer 1, below be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet 2, die temperature 165-185 ℃.
Described nano titanium oxide particle diameter is 20-40nm.
Described oxidation inhibitor is one or both in the positive octadecanol ester of β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid, butyl hydroxy toluene, four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester.
Described photostabilizer is that commercially available model is the photostabilizer of TINUVIN 783, is poly-{ 6-[(1,1,3,3-tetramethyl butyl) amino]-1,3,5-triazine-2,4-two [(2,2,6,6-tetramethyl-piperidyl) imino-] } and succinic acid and 4-hydroxyl-2, the composite synergistic stabilizer of polymer of 2,6,6-tetramethyl--1-piperidine alcohols.
Described calcium powder is light calcium carbonate powder, size 1000-2000 order.
Described wood powder particle diameter is 60-100 order.
Described rare-earth coupling agent is that model is ST-1 type rare-earth coupling agent.
Embodiment 1: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 170 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 180 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.175 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 2: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 160 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 170 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.165 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 3: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 180 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 190 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.185 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 4: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 160 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 180 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.175 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 5: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 180 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 170 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.165 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 6: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 170 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 190 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.185 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 7: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 160 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 170 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.165 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 8: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 170 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 180 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.175 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 9: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 180 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 190 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.185 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 10: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 180 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 180 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.175 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 11: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 160 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 180 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.185 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 12: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 170 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 190 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.185 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 13: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 170 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 190 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.165 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 14: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 165 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 175 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.182 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 15: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 168 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 180 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.165 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Embodiment 16: a kind of coextrusion mold wood plastic composite board and preparation method thereof, and its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, 173 ℃ of extrusion temperatures:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, 188 ℃ of extrusion temperatures:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded.172 ℃ of die temperatures, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
Below by detection, prove the effect of the ageing-resistant wood plastic composite board of the embodiment of the present invention 1, its detected result is as follows:
MOR: 31.2MPa, quiet bent modulus: 1.89GPa;
Thermo-oxidative ageing 3000h at 90 ℃, MOR conservation rate: 92.6%, quiet bent modulus conservation rate: 87.8%, without phenomenons such as efflorescence, crackings;
Ultraviolet light and aging 2000h, MOR conservation rate: 93.7%, quiet bent modulus conservation rate: 90.1%, without phenomenons such as efflorescence, crackings.
Above result all meets or exceeds relevant criterion.
Claims (1)
1. a preparation method for coextrusion mold wood plastic composite board, is characterized in that its preparation process is:
(1) ASA resin, nano titanium oxide, oxidation inhibitor, photostabilizer are mixed to the ageing-resistant resin layer melting charge stream of rear employing extruder for shaping by following parts by weight, extrusion temperature 160-180 ℃:
(2) polyethylene, wood powder, calcium powder, rare-earth coupling agent, chlorinatedpolyethylene, acrylic resin, polyethylene wax, octyl stearate, ethylene bis stearic acid amide are mixed to second extruder for shaping Wood plastic composite structural sheet melting charge stream of rear employing by following parts by weight, extrusion temperature 170-190 ℃:
(3) ageing-resistant resin layer, Wood plastic composite structural sheet are formed to the stack while hot of different melting charge stream, in a composite machine head, converge, per os mould is co-extruded; Die temperature 165-185 ℃, moulding obtain a surface for ageing-resistant resin layer, be a kind of coextrusion mold wood plastic composite board of Wood plastic composite structural sheet below.
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| CN103407262A (en) * | 2013-08-23 | 2013-11-27 | 鑫盛(湖州)塑木科技有限公司 | Co-extruding-molded plastic-wood composite sheet material and preparation method thereof |
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| CN110283468A (en) * | 2019-06-10 | 2019-09-27 | 南京聚锋新材料有限公司 | A kind of preparation method of the compound plastic-wood material of high durable |
| CN111424910A (en) * | 2020-03-04 | 2020-07-17 | 江苏福瑞森塑木科技股份有限公司 | Three-layer co-extrusion high-elastic anti-aging plastic-wood composite material plate and preparation method thereof |
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| CN101353464A (en) * | 2008-07-31 | 2009-01-28 | 常熟市精科塑胶模具有限公司 | Manufacturing method of wood plastic decorative construction material |
| WO2010023054A1 (en) * | 2008-08-29 | 2010-03-04 | Evonik Degussa Gmbh | Method for using silanes and silane blends in wood-plastic composite manufacturing |
| CN101992574A (en) * | 2010-09-30 | 2011-03-30 | 淄博英科框业有限公司 | Uvioresistant multi-layer polystyrene foaming section bar with co-extrusion function |
-
2012
- 2012-07-18 CN CN201210248526.2A patent/CN102731951B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033317A (en) * | 2006-05-24 | 2007-09-12 | 卓玉国 | Preparation of multifunctional wood-plastic composite material |
| CN101024709A (en) * | 2007-02-06 | 2007-08-29 | 南京航空航天大学 | Moulding-grade wood-plastic composite and processing process |
| CN101353464A (en) * | 2008-07-31 | 2009-01-28 | 常熟市精科塑胶模具有限公司 | Manufacturing method of wood plastic decorative construction material |
| WO2010023054A1 (en) * | 2008-08-29 | 2010-03-04 | Evonik Degussa Gmbh | Method for using silanes and silane blends in wood-plastic composite manufacturing |
| CN101992574A (en) * | 2010-09-30 | 2011-03-30 | 淄博英科框业有限公司 | Uvioresistant multi-layer polystyrene foaming section bar with co-extrusion function |
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