CN101708614B - High-intensity wood plastic composite board and fabrication method thereof - Google Patents

High-intensity wood plastic composite board and fabrication method thereof Download PDF

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Publication number
CN101708614B
CN101708614B CN2009102346022A CN200910234602A CN101708614B CN 101708614 B CN101708614 B CN 101708614B CN 2009102346022 A CN2009102346022 A CN 2009102346022A CN 200910234602 A CN200910234602 A CN 200910234602A CN 101708614 B CN101708614 B CN 101708614B
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high
plastic composite
wood plastic
intensity wood
sheet material
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CN2009102346022A
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CN101708614A (en
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雷文
钱哲宇
余旺旺
黄涛
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宜兴森诺塑胶复合制品有限公司
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Abstract

The invention relates to a wood plastic composite, in particular to a high-intensity wood plastic composite board and a fabrication method thereof. The method for fabricating the high-intensity wood plastic composite board comprises the following steps: treating nano titanium dioxide with silane coupling agent to obtain modified nano titanium dioxide; mechanically stirring the modified nano titanium dioxide, plastic particles, maleic anhydride grafted plastic particles, calcium stearate and the like, and extruding and pelleting all the materials to obtain modified plastic particles; mechanically stirring the modified plastic particles, wood flour, terpene resin, chopped glass fiber, white oil, antioxidant and the like, and extruding, melt-blending and pelleting all the materials to obtain high-intensity wood plastic composite particles; and finally extruding the high-intensity wood plastic composite particles with a machine to mold the high-intensity wood plastic composite board. The high-intensity wood plastic composite board has extremely wide application range, and is applied to the fields such as transportation, construction, decoration, ornament, municipal works, garden and park, packaging and the like. The high-intensity wood plastic composite board has the advantages of reproducibility, low cost and higher mechanical properties such as static bending strength and the like, thereby being an ideal material for replacing wood. Compared with traditional wood plastic composites, the high-intensity wood plastic composite board has longer service life, and is a novel upgrade product of the present wood plastic composites.

Description

A kind of high-intensity wood plastic composite sheet material and preparation method thereof

Technical field

The present invention relates to a kind of wood plastic composite, particularly relate to a kind of high-intensity wood plastic composite sheet material and preparation method thereof.

Background technology

In recent years, along with the enhancing of people's environmental protection consciousness, raw material sources extensively, environmental friendliness, wood plastic composite renewable, that can be recycled more and more be subject to people's attention.Wood plastic composite can be used as packaging material such as pallet, packing case, storage materials such as bed board, shop beam, finishing, ornament materials such as house, floor, building template, leisure materials such as the open-air tables and chairs that occasions such as park, court, street are used, stool, automobile inside decoration materials, tubing etc.Wood plastic composite has material homogeneous, size and stablizes, is difficult for cracking than timber and do not have defectives such as timber knot, twill; Processability with thermoplastic is extruded, technology such as injection moulding all can be used to moulding, and equipment attrition is little; Goods can be pressed into the beginning of tongue and groove shape, space pattern and other requirement, need not to carry out complicated secondary operations; Can be made into various goods lucuriant in design by adding technologies such as colouring agent, japanning or overlay film; In light weight, energy consumption is little; Easy to process, can saw, plane and bonding, or, use wood working tool to finish, and nail-holding ability obviously be better than other synthetic materials with nail, bolting; Need not utilize toxic chemical substance to handle, not contain formaldehyde; The outward appearance that timber is arranged is than the high hardness of plastic products; The discarded reusable and recycling in back, and can biodegradation, help plurality of advantages such as environmental protection.But also exist some obviously not enough, on the low side as MOR, bearing capacity is relatively poor, long-term use may bend etc., during particularly unsettled use, the easier generation of flexural deformation, thus influence its result of use, shortened its service life, defined its scope of application.So, traditional wood plastic composite is carried out modification, it is just very necessary to improve it mechanical property that comprises MOR.

Summary of the invention

The objective of the invention is provides a kind of high-intensity wood plastic composite sheet material and preparation method thereof at above-mentioned weak point.

The objective of the invention is to be achieved through the following technical solutions:

A kind of high-intensity wood plastic composite sheet material is formed by the feedstock production that comprises following parts by weight:

A kind of high-intensity wood plastic composite sheet material of the present invention, wherein said wood powder particle diameter order number is the 60-80 order.

A kind of high-intensity wood plastic composite sheet material of the present invention, wherein said plastic pellet adopt a kind of in polyethylene, polypropylene, polyvinyl chloride, the polystyrene.

A kind of high-intensity wood plastic composite sheet material of the present invention, wherein said maleic anhydride graft plastic pellet is a maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene, the maleic anhydride graft polyvinyl chloride, a kind of in the maleic anhydride graft polystyrene, it selects for use corresponding with plastic pellet, be that plastic pellet is when being polyethylene, select maleic anhydride grafted polyethylene for use, when plastic pellet is polypropylene, select maleic anhydride inoculated polypropylene for use, when plastic pellet is polyvinyl chloride, select the maleic anhydride graft polyvinyl chloride for use, when plastic pellet is polystyrene, select the maleic anhydride graft polystyrene for use.

A kind of high-intensity wood plastic composite sheet material of the present invention, wherein said modified nano-titanium dioxide is mixed with silane coupler by nano titanium oxide, and vacuum drying is made; Described silane coupler adopts γ-(methacryloxypropyl) propyl trimethoxy silicane.

A kind of high-intensity wood plastic composite sheet material of the present invention, wherein said chopped glass fiber length is 3-4mm.

A kind of high-intensity wood plastic composite sheet material of the present invention, wherein said white oil are No. 15 technical white oils.

A kind of high-intensity wood plastic composite sheet material of the present invention, wherein said antioxidant is β-(3, the 5-di-tert-butyl-hydroxy phenyl) one or both in the positive octadecanol ester of propionic acid, butyl hydroxy toluene, four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.

Preferably, a kind of high-intensity wood plastic composite sheet material is formed by the feedstock production that comprises following parts by weight:

More preferably, a kind of high-intensity wood plastic composite sheet material is formed by the feedstock production that comprises following parts by weight:

A kind of high-intensity wood plastic composite preparation of plates method of the present invention, it may further comprise the steps:

(1), with silane coupler and water by weight 1: 1-5 mixes, and wherein water is solvent.

(2), with the silane coupler of nano titanium oxide and dilution by weight 100: 2-6 mixes, and under 40 ℃ of-80 ℃ of conditions, vacuum drying 3-6 hour, makes modified nano-titanium dioxide;

(3), take by weighing each raw material by formula ratio;

(4), plastic pellet, maleic anhydride graft plastic pellet, calcium stearate, modified nano-titanium dioxide are placed stir 6-1 () minute in the mechanical stirring kettle, extruding pelletization, 140 ℃-190 ℃ of extruder barrel temperature, 160 ℃-210 ℃ of die head temperatures obtain the modified plastics particle;

(5), above-mentioned modified plastics particle, wood powder, terpene resin, chopped glass fiber, white oil, antioxidant etc. are placed in the mechanical stirring kettle and mechanical agitation 3-5 minute once more;

(6), behind the mixing, adopt extruder to carry out melt blending and granulation, 140 ℃-195 ℃ of extruder barrel temperature, 155 ℃-205 ℃ of die head temperatures obtain the high-intensity wood plastic composite particle;

(7), adopt machine with gained high-intensity wood plastic composite particle extrusion molding high-intensity wood plastic composite sheet material, 145 ℃-190 ℃ of extruder barrel temperature, 165 ℃-205 ℃ of die head temperatures are promptly finished.

A kind of high-intensity wood plastic composite sheet material of the present invention, it is convenient to manufacture, and traditional plastic production technology need not to improve and promptly can be used for its production and processing, and mechanization degree is higher in the production process, and required labour is less, and production cost is low.High-intensity wood plastic composite sheet material is compared with common plastics sheet material, and used amount of plastic reduces, and friendly more to environment, modulus is higher, and rigidity is bigger, and creep resistant can be carried out twice laid to this industrial or agricultural leftover pieces of wood powder simultaneously more, reduces the products material cost; High-intensity wood plastic composite sheet material is compared with other wood plastic composite, and the MOR equal strength is higher, and mechanical property is excellent more, thereby longer service life, can be widely used in numerous areas such as traffic, fitting-up, municipal gardens, packing.

The specific embodiment

Below adopt embodiment to specify a kind of high-intensity wood plastic composite sheet material of the present invention and preparation method thereof.

Embodiment 1

(1), silane coupler and water were mixed by weight 1: 1, wherein water is solvent.

(2), the silane coupler of nano titanium oxide and dilution was mixed by weight 100: 6, under 60 ℃ of conditions, modified nano-titanium dioxide is made in vacuum drying 4 hours;

(3), take by weighing each raw material by formula ratio;

(4), plastic pellet, maleic anhydride graft plastic pellet, calcium stearate, modified nano-titanium dioxide are placed in the mechanical stirring kettle and to stir 6-10 minute, extruding pelletization, 140 ℃-165 ℃ of extruder barrel temperature, 160 ℃-185 ℃ of die head temperatures obtain the modified plastics particle;

(5), above-mentioned modified plastics particle, wood powder, terpene resin, chopped glass fiber, white oil, (β-positive octadecanol ester of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid) etc. are placed in the mechanical stirring kettle and mechanical agitation 3 minutes once more;

(6), behind the mixing, adopt extruder to carry out melt blending and granulation, 140 ℃-180 ℃ of extruder barrel temperature, 155 ℃-185 ℃ of die head temperatures obtain the high-intensity wood plastic composite particle;

(7), adopt machine with gained high-intensity wood plastic composite particle extrusion molding high-intensity wood plastic composite sheet material, 145 ℃-180 ℃ of extruder barrel temperature, 165 ℃-205 ℃ of die head temperatures are promptly finished.

Embodiment 2

(1), silane coupler and water were mixed by weight 1: 5, wherein water is solvent.

(2), the silane coupler of nano titanium oxide and dilution was mixed by weight 100: 4, under 60 ℃ of conditions, modified nano-titanium dioxide is made in vacuum drying 3 hours;

(3), take by weighing each raw material by formula ratio;

(4), plastic pellet, maleic anhydride graft plastic pellet, calcium stearate, modified nano-titanium dioxide are placed in the mechanical stirring kettle and to stir 6-10 minute, extruding pelletization, 165 ℃-190 ℃ of extruder barrel temperature, 180 ℃-210 ℃ of die head temperatures obtain the modified plastics particle;

(5), above-mentioned modified plastics particle, wood powder, terpene resin, chopped glass fiber, white oil, four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester etc. are placed in the mechanical stirring kettle and mechanical agitation 5 minutes once more;

(6), behind the mixing, adopt extruder to carry out melt blending and granulation, 160 ℃-195 ℃ of extruder barrel temperature, 175 ℃-205 ℃ of die head temperatures obtain the high-intensity wood plastic composite particle;

(7), adopt machine with gained high-intensity wood plastic composite particle extrusion molding high-intensity wood plastic composite sheet material, 175 ℃-190 ℃ of extruder barrel temperature, 185 ℃-200 ℃ of die head temperatures are promptly finished.

Embodiment 3

(1), silane coupler and water were mixed by weight 1: 4, wherein water is solvent.

(2), the silane coupler of nano titanium oxide and dilution was mixed by weight 100: 2, under 40 ℃ of conditions, modified nano-titanium dioxide is made in vacuum drying 6 hours;

(3), take by weighing each raw material by formula ratio;

(4), plastic pellet, maleic anhydride graft plastic pellet, calcium stearate, modified nano-titanium dioxide are placed in the mechanical stirring kettle and to stir 6-10 minute, extruding pelletization, 160 ℃-180 ℃ of extruder barrel temperature, 170 ℃-200 ℃ of die head temperatures obtain the modified plastics particle;

(5), above-mentioned modified plastics particle, wood powder, terpene resin, chopped glass fiber, white oil, butyl hydroxy toluene etc. are placed in the mechanical stirring kettle and mechanical agitation 4 minutes once more;

(6), behind the mixing, adopt extruder to carry out melt blending and granulation, 140 ℃-185 ℃ of extruder barrel temperature, 155 ℃-195 ℃ of die head temperatures obtain the high-intensity wood plastic composite particle;

(7), adopt machine with gained high-intensity wood plastic composite particle extrusion molding high-intensity wood plastic composite sheet material, 145 ℃-180 ℃ of extruder barrel temperature, 170 ℃-190 ℃ of die head temperatures are promptly finished.

Embodiment 4

(1), silane coupler and water were mixed by weight 1: 2, wherein water is solvent.

(2), the silane coupler of nano titanium oxide and dilution was mixed by weight 100: 3, under 70 ℃ of conditions, modified nano-titanium dioxide is made in vacuum drying 4 hours;

(3), take by weighing each raw material by formula ratio;

(4), plastic pellet, maleic anhydride graft plastic pellet, calcium stearate, modified nano-titanium dioxide are placed in the mechanical stirring kettle and to stir 6-10 minute, extruding pelletization, 143 ℃-175 ℃ of extruder barrel temperature, 160 ℃-185 ℃ of die head temperatures obtain the modified plastics particle;

(5), above-mentioned modified plastics particle, wood powder, terpene resin, chopped glass fiber, white oil, butyl hydroxy toluene, β-(3, the 5-di-tert-butyl-hydroxy phenyl) positive octadecanol ester of propionic acid etc. are placed in the mechanical stirring kettle and mechanical agitation 4 minutes once more;

(6), behind the mixing, adopt extruder to carry out melt blending and granulation, 140 ℃-175 ℃ of extruder barrel temperature, 155 ℃-170 ℃ of die head temperatures obtain the high-intensity wood plastic composite particle;

(7), adopt machine with gained high-intensity wood plastic composite particle extrusion molding high-intensity wood plastic composite sheet material, 145 ℃-170 ℃ of extruder barrel temperature, 165 ℃-180 ℃ of die head temperatures are promptly finished.

Embodiment 5

(1), silane coupler and water were mixed by weight 1: 4, wherein water is solvent.

(2), the silane coupler of nano titanium oxide and dilution was mixed by weight 100: 5, under 50 ℃ of conditions, modified nano-titanium dioxide is made in vacuum drying 5 hours;

(3), take by weighing each raw material by formula ratio;

(4), plastic pellet, maleic anhydride graft plastic pellet, calcium stearate, modified nano-titanium dioxide are placed in the mechanical stirring kettle and to stir 6-10 minute, extruding pelletization, 155 ℃-180 ℃ of extruder barrel temperature, 165 ℃-190 ℃ of die head temperatures obtain the modified plastics particle;

(5), above-mentioned modified plastics particle, wood powder, terpene resin, chopped glass fiber, white oil, butyl hydroxy toluene, four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester etc. are placed in the mechanical stirring kettle and mechanical agitation 3 minutes once more;

(6), behind the mixing, adopt extruder to carry out melt blending and granulation, 155 ℃-175 ℃ of extruder barrel temperature, 160 ℃-178 ℃ of die head temperatures obtain the high-intensity wood plastic composite particle;

(7), adopt machine with gained high-intensity wood plastic composite particle extrusion molding high-intensity wood plastic composite sheet material, 155 ℃-170 ℃ of extruder barrel temperature, 165 ℃-180 ℃ of die head temperatures are promptly finished.

Embodiment 6

(1), silane coupler and water were mixed by weight 1: 3, wherein water is solvent.

(2), the silane coupler of nano titanium oxide and dilution was mixed by weight 100: 6, under 80 ℃ of conditions, modified nano-titanium dioxide is made in vacuum drying 4.5 hours;

(3), take by weighing each raw material by formula ratio;

(4), plastic pellet, maleic anhydride graft plastic pellet, calcium stearate, modified nano-titanium dioxide are placed in the mechanical stirring kettle and to stir 6-10 minute, extruding pelletization, 170 ℃-190 ℃ of extruder barrel temperature, 180 ℃-210 ℃ of die head temperatures obtain the modified plastics particle;

(5), with above-mentioned modified plastics particle, wood powder, terpene resin, chopped glass fiber, white oil, butyl hydroxy toluene, β-(3, the 5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid, four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester etc. places in the mechanical stirring kettle and mechanical agitation 3.5 minutes once more;

(6), behind the mixing, adopt extruder to carry out melt blending and granulation, 162 ℃-195 ℃ of extruder barrel temperature, 170 ℃-205 ℃ of die head temperatures obtain the high-intensity wood plastic composite particle;

(7), adopt machine with gained high-intensity wood plastic composite particle extrusion molding high-intensity wood plastic composite sheet material, 158 ℃-190 ℃ of extruder barrel temperature, 190 ℃-205 ℃ of die head temperatures are promptly finished.

Below by detecting the effect of the proof embodiment of the invention 1, its testing result is as follows:

MOR: 28MPa, quiet bent modulus: 2.0GPa, low temperature drop impact crack-free

Above result obviously surpasses the requirement of the forestry industry standard LY/T 1613-2004 of the People's Republic of China (PRC).

Claims (10)

1. high-intensity wood plastic composite sheet material is formed by the feedstock production of following parts by weight:
Described modified nano-titanium dioxide is characterized in that being mixed with silane coupler by nano titanium oxide, and vacuum drying is made; Described silane coupler adopts γ-(methacryloxypropyl) propyl trimethoxy silicane.
2. a kind of high-intensity wood plastic composite sheet material according to claim 1 is formed by the feedstock production of following parts by weight:
3. a kind of high-intensity wood plastic composite sheet material according to claim 2 is formed by the feedstock production of following parts by weight:
4. according to the described a kind of high-intensity wood plastic composite sheet material of the arbitrary claim of claim 1-3, it is characterized in that described wood powder particle diameter order number is the 60-80 order.
5. according to the described a kind of high-intensity wood plastic composite sheet material of the arbitrary claim of claim 1-3, it is characterized in that described plastic pellet adopts a kind of in polyethylene, polypropylene, polyvinyl chloride, the polystyrene.
6. according to the described a kind of high-intensity wood plastic composite sheet material of the arbitrary claim of claim 1-3, it is characterized in that described maleic anhydride graft plastic pellet is a maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene, the maleic anhydride graft polyvinyl chloride, a kind of in the maleic anhydride graft polystyrene, it selects for use corresponding with plastic pellet, be that plastic pellet is when being polyethylene, select maleic anhydride grafted polyethylene for use, when plastic pellet is polypropylene, select maleic anhydride inoculated polypropylene for use, when plastic pellet is polyvinyl chloride, select the maleic anhydride graft polyvinyl chloride for use, when plastic pellet is polystyrene, select the maleic anhydride graft polystyrene for use.
7. according to the described a kind of high-intensity wood plastic composite sheet material of the arbitrary claim of claim 1-3, it is characterized in that described chopped glass fiber length is 3-4mm.
8. according to the described a kind of high-intensity wood plastic composite sheet material of the arbitrary claim of claim 1-3, it is characterized in that described white oil is No. 15 technical white oils.
9. according to the described a kind of high-intensity wood plastic composite sheet material of the arbitrary claim of claim 1-3, it is characterized in that described antioxidant is β-(3, the 5-di-tert-butyl-hydroxy phenyl) one or both in the positive octadecanol ester of propionic acid, butyl hydroxy toluene, four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
10. according to the described a kind of high-intensity wood plastic composite sheet material of the arbitrary claim of claim 1-3, it is characterized in that its preparation process is:
(1), with silane coupler and water by weight 1: 1-5 mixes, and wherein water is solvent;
(2), with the silane coupler of nano titanium oxide and dilution by weight 100: 2-6 mixes, and under 40 ℃ of-80 ℃ of conditions, vacuum drying 3-6 hour, makes modified nano-titanium dioxide;
(3), take by weighing each raw material by formula ratio;
(4), plastic pellet, maleic anhydride graft plastic pellet, calcium stearate, modified nano-titanium dioxide are placed in the mechanical stirring kettle and to stir 6-10 minute, extruding pelletization, 140 ℃-190 ℃ of extruder barrel temperature, 160 ℃-210 ℃ of die head temperatures obtain the modified plastics particle;
(5), above-mentioned modified plastics particle, wood powder, terpene resin, chopped glass fiber, white oil, antioxidant are placed in the mechanical stirring kettle and mechanical agitation 3-5 minute once more;
(6), behind the mixing, adopt extruder to carry out melt blending and granulation, 140 ℃-195 ℃ of extruder barrel temperature, 155 ℃-205 ℃ of die head temperatures obtain the high-intensity wood plastic composite particle;
(7), adopt machine with gained high-intensity wood plastic composite particle extrusion molding high-intensity wood plastic composite sheet material, 145 ℃-190 ℃ of extruder barrel temperature, 165 ℃-205 ℃ of die head temperatures are promptly finished.
CN2009102346022A 2009-11-25 2009-11-25 High-intensity wood plastic composite board and fabrication method thereof CN101708614B (en)

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