CN103360777B - A kind of flame-retardant wood-plastic composite material and preparation method thereof - Google Patents
A kind of flame-retardant wood-plastic composite material and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to wood plastic composite field, there is provided that low, the easy degraded of a kind of production cost, flame retardant properties are good, the flame-retardant wood-plastic composite material with excellent mechanical property and preparation method thereof, comprise each component of following weight part: paper waste 100 weight part, toxilic acid grafted polyethylene 1 ~ 2 weight part, hydrated metal oxide 12 ~ 20 weight part, waste or used plastics 20 ~ 40 weight part, ethylene bis stearamide 0.5 ~ 1 weight part, mineral filler 10 ~ 15 weight part, thermo-stabilizer 2 ~ 5 weight part, lubricant 1 ~ 3 weight part, antioxidant 3 ~ 4 weight part; Its preparation method is: the pre-treatment of (1) paper waste, and (2) are blended, (3) extrusion moulding.
Description
Technical field
The present invention relates to wood plastic composite field, particularly a kind of flame-retardant wood-plastic composite material and preparation method thereof.
Background technology
The source of plastics is mainly natural oil, and the storage capacity of these energy has certain limit, and plastics are difficult to fast degradation under natural condition, thus causes very large pressure to environment and resources.Wood plastic composite is a kind of new green environment protection material, also known as environmental protection wood, ecological wooden, wood plastic composite excellent property, easy to use, can saw, can dig, can follow closely, both the advantage of timber in processing characteristics had been remained, overcome again timber not to be durable and to be afraid of the shortcoming of damaging by worms, outward freight wood packaging materials and laying material can be substituted, also the corrosion resistant builder's temporary shed that may be used for chemical industry is built, the manufactures such as decorative sheet, floor, passage, stand and foundry pattern bonnet, water pump shell, electrical structure part.But, due to the feature of consistency poor between xylon and resin matrix in wood plastic composite and fiber itself, the addition of fiber is made to be subject to serious restriction, in the wood plastic composite of current suitability for industrialized production, the content of vegetable fibre only has 10-25% mostly, vegetable fibre content low is like this for reducing the cost of wood plastic composite, meaning is very not large, and the property-modifying additive cost of costliness, the market value of this matrix material is made again to be equivalent to even higher than general-purpose plastics and solid wood, thus constrain the development and apply of wood plastic composite.
Summary of the invention
Therefore, for above-mentioned problem, the invention provides that low, the easy degraded of a kind of production cost, flame retardant properties are good, the flame-retardant wood-plastic composite material with excellent mechanical property and preparation method thereof.
For solving this technical problem, the present invention takes following scheme: a kind of flame-retardant wood-plastic composite material, comprises each component of following weight part:
Paper waste 100 weight part
Toxilic acid grafted polyethylene 1 ~ 2 weight part
Hydrated metal oxide 12 ~ 20 weight part
Waste or used plastics 20 ~ 40 weight part
Ethylene bis stearamide 0.5 ~ 1 weight part
Mineral filler 10 ~ 15 weight part
Thermo-stabilizer 2 ~ 5 weight part
Lubricant 1 ~ 3 weight part
Antioxidant 3 ~ 4 weight part.
Further improvement is: described hydrated metal oxide is magnesium hydroxide or aluminium hydroxide or both are with arbitrarily than the mixture of mixing.
Further improvement is: described mineral filler be in potter's clay, talcum powder, mica powder, asbestos powder, calcium carbonate any one or two or more with arbitrarily than mixing mixture.
A kind of preparation method of flame-retardant wood-plastic composite material: comprise the following steps:
(1) pre-treatment of paper waste: by paper waste successively after concentration be 0.5mol/L ~ 8mol/L sodium hydroxide solution and concentration is 2.0mol/L ~ 8mol/L alcohol solution dipping washing to neutral, pretreated wood powder is obtained after oven dry, be 5.0 ~ 6.5 by pretreated wood powder at pH, solution temperature is stir 0.5 hour ~ 5 hours in the trimeric cyanamide saturated aqueous solution of 85 DEG C ~ 100 DEG C, again material is quickly cooled to less than 30 DEG C after end to be mixed, after filtration, 100 DEG C ~ 130 DEG C thermal treatments 0.8 hour ~ 2 hours after drying, obtain 80 ~ 110 object modified wood powders, for subsequent use,
(2) blended: the paper waste of 100 weight parts high-speed stirring together with 20 ~ 40 weight part waste or used plastics and 2 ~ 5 weight part thermo-stabilizers is mixed, 1 ~ 2 parts by weight of maleic grafted polyethylene, the hydrated metal oxide of 12 ~ 20 weight parts, lubricant 1 ~ 3 weight part is added when temperature reaches 70 ~ 75 DEG C, when temperature reaches 110 DEG C, add the ethylene bis stearamide of 0.5 ~ 1 weight part, the mineral filler of 10 ~ 15 weight parts, the antioxidant of 3 ~ 4 weight parts, high-speed stirring, continue heat temperature raising, when temperature reaches 120 DEG C, stop stirring;
(3) extrusion moulding: forcing machine delivered to by the material after step (2) being processed, at the temperature of 150 ~ 160 DEG C, make material fully plastify, afterwards the material plastified is clamp-oned in forming mould, under the effect of squeeze, make material extrusion moulding, be i.e. obtained flame-retardant wood-plastic composite material.
Further improvement is: in described step (1), material rate of cooling is 110 ~ 120 DEG C/min.
By adopting such scheme, beneficial effect of the present invention is: in wood plastic composite of the present invention, paper waste content is high, and production cost is low, easily degrades, and has excellent mechanical property, and flame retardant properties is good.The present invention is with paper waste, plastic waste for main raw material, and raw material sources are wide, and recycle paper waste, plastic waste, both protected environment and in turn saved resource.Containing a large amount of xylons in paper waste, containing a large amount of resins in plastic waste, the wood plastics composite fiber adopting method of the present invention to produce overcomes the problem of consistency difficulty between xylon and resin, the wooden plastic fiber utilizing the present invention to produce, the content of its vegetable fibre is high, the properties-correcting agent used is few, and cost is low.Owing to containing Mierocrystalline cellulose, hemicellulose, xylogen and other small molecular ester materials in paper waste, modification need be carried out to wooden paper waste in advance with sodium hydroxide solution and ethanolic soln, extract these Unstable Substances, after extracting, waste paper surface and internal reservation go out gap, be conducive to the immersion of later stage trimeric cyanamide hydrothermal solution, through cooling fast, filtering and after thermal treatment, waste paper is closely coated by trimeric cyanamide.The Unstable Substance such as hemicellulose, small molecular ester in paper waste can be divested preferably due to sodium hydroxide solution and ethanolic soln, promote closely coated to waste paper of trimeric cyanamide, thus the present invention by waste paper in advance successively through sodium hydroxide solution and alcohol solution dipping.Described concentration of sodium hydroxide solution is 0.5mol/L ~ 8mol/L, and ethanol solution concentration is 2.0mol/L ~ 8mol/L, can reach good effect.
Embodiment
Specifically the present invention is introduced below in conjunction with embodiment.
Embodiment one
A kind of flame-retardant wood-plastic composite material, comprises each component of following weight part:
Paper waste 100 weight part
Toxilic acid grafted polyethylene 1 weight part
Magnesium hydroxide 12 weight part
Waste or used plastics 20 weight part
Ethylene bis stearamide 0.5 weight part
Talcum powder 10 weight part
Thermo-stabilizer 2 weight part
Lubricant 1 weight part
Antioxidant 3 weight part.
Its preparation method, comprises the following steps:
(1) pre-treatment of paper waste: by paper waste successively after concentration be 0.5mol/L sodium hydroxide solution and concentration is 2.0mol/L alcohol solution dipping washing to neutral, pretreated wood powder is obtained after oven dry, by pretreated wood powder pH be 5.0, solution temperature be in the trimeric cyanamide saturated aqueous solution of 85 DEG C stir 0.5 hour, again material is quickly cooled to less than 30 DEG C after end to be mixed, material rate of cooling is 110 DEG C/min, after filtration, after drying 100 DEG C of thermal treatments 0.8 hour, obtain 80 ~ 100 object modified wood powders, for subsequent use;
(2) blended: the paper waste of 100 weight parts high-speed stirring together with 20 weight part waste or used plastics and 2 weight part thermo-stabilizers is mixed, 1 parts by weight of maleic grafted polyethylene, the magnesium hydroxide of 12 weight parts, lubricant 1 weight part is added when temperature reaches 70 DEG C, when temperature reaches 110 DEG C, add the ethylene bis stearamide of 0.5 weight part, the talcum powder of 10 weight parts, the antioxidant of 3 weight parts, high-speed stirring, continue heat temperature raising, when temperature reaches 120 DEG C, stop stirring;
(3) extrusion moulding: forcing machine delivered to by the material after step (2) being processed, at the temperature of 150 DEG C, make material fully plastify, afterwards the material plastified is clamp-oned in forming mould, under the effect of squeeze, make material extrusion moulding, be i.e. obtained flame-retardant wood-plastic composite material.
Embodiment two
A kind of flame-retardant wood-plastic composite material, comprises each component of following weight part:
Paper waste 100 weight part
Toxilic acid grafted polyethylene 1.5 weight part
Magnesium hydroxide 8 weight part
Aluminium hydroxide 8 weight part
Waste or used plastics 30 weight part
Ethylene bis stearamide 0.8 weight part
Potter's clay 5 weight part
Calcium carbonate 7.5 weight part
Thermo-stabilizer 3.5 weight part
Lubricant 2 weight part
Antioxidant 3.5 weight part.
Its preparation method, comprises the following steps:
(1) pre-treatment of paper waste: by paper waste successively after concentration be 4mol/L sodium hydroxide solution and concentration is 5mol/L alcohol solution dipping washing to neutral, pretreated wood powder is obtained after oven dry, by pretreated wood powder pH be 6, solution temperature be in the trimeric cyanamide saturated aqueous solution of 95 DEG C stir 3 hours, again material is quickly cooled to less than 30 DEG C after end to be mixed, material rate of cooling is 115 DEG C/min, after filtration, after drying 115 DEG C of thermal treatments 1.5 hours, obtain 80 ~ 110 object modified wood powders, for subsequent use;
(2) blended: the paper waste of 100 weight parts high-speed stirring together with 30 weight part waste or used plastics and 3.5 weight part thermo-stabilizers is mixed, 1.5 parts by weight of maleic grafted polyethylenes, magnesium hydroxide 8 weight part, aluminium hydroxide 8 weight part, lubricant 2 weight part is added when temperature reaches 73 DEG C, when temperature reaches 110 DEG C, add the antioxidant of the ethylene bis stearamide of 0.8 weight part, potter's clay 5 weight part, calcium carbonate 7.5 weight part, 3.5 weight parts, high-speed stirring, continue heat temperature raising, when temperature reaches 120 DEG C, stop stirring;
(3) extrusion moulding: forcing machine delivered to by the material after step (2) being processed, at the temperature of 155 DEG C, make material fully plastify, afterwards the material plastified is clamp-oned in forming mould, under the effect of squeeze, make material extrusion moulding, be i.e. obtained flame-retardant wood-plastic composite material.
Embodiment three
A kind of flame-retardant wood-plastic composite material, comprises each component of following weight part:
Paper waste 100 weight part
Toxilic acid grafted polyethylene 2 weight part
Aluminium hydroxide 20 weight part
Waste or used plastics 40 weight part
Ethylene bis stearamide 1 weight part
Mica powder 15 weight part
Thermo-stabilizer 5 weight part
Lubricant 3 weight part
Antioxidant 4 weight part.
Its preparation method, comprises the following steps:
(1) pre-treatment of paper waste: by paper waste successively after concentration be 8mol/L sodium hydroxide solution and concentration is 8mol/L alcohol solution dipping washing to neutral, pretreated wood powder is obtained after oven dry, by pretreated wood powder pH be 6.5, solution temperature be in the trimeric cyanamide saturated aqueous solution of 100 DEG C stir 5 hours, again material is quickly cooled to less than 30 DEG C after end to be mixed, material rate of cooling is 120 DEG C/min, after filtration, after drying 130 DEG C of thermal treatments 2 hours, obtain 80 ~ 110 object modified wood powders, for subsequent use;
(2) blended: the paper waste of 100 weight parts high-speed stirring together with 40 weight part waste or used plastics and 5 weight part thermo-stabilizers is mixed, 2 parts by weight of maleic grafted polyethylenes, the aluminium hydroxide of 20 weight parts, lubricant 3 weight part is added when temperature reaches 75 DEG C, when temperature reaches 110 DEG C, add the ethylene bis stearamide of 1 weight part, the mica powder of 15 weight parts, the antioxidant of 4 weight parts, high-speed stirring, continue heat temperature raising, when temperature reaches 120 DEG C, stop stirring;
(3) extrusion moulding: forcing machine delivered to by the material after step (2) being processed, at the temperature of 160 DEG C, make material fully plastify, afterwards the material plastified is clamp-oned in forming mould, under the effect of squeeze, make material extrusion moulding, be i.e. obtained flame-retardant wood-plastic composite material.
Wherein, the content of described each component all can realize object of the present invention in following scope: toxilic acid grafted polyethylene 1 ~ 2 weight part, hydrated metal oxide 12 ~ 20 weight part, waste or used plastics 20 ~ 40 weight part, ethylene bis stearamide 0.5 ~ 1 weight part, mineral filler 10 ~ 15 weight part, thermo-stabilizer 2 ~ 5 weight part, lubricant 1 ~ 3 weight part, antioxidant 3 ~ 4 weight part, described magnesium hydroxide, aluminium hydroxide is hydrated metal oxide, described talcum powder, potter's clay, mica powder, calcium carbonate is mineral filler, described mineral filler can be potter's clay, talcum powder, mica powder, asbestos powder, in calcium carbonate any one or two or more with arbitrarily than mixing mixture.。
The concentration of described sodium hydroxide is at 0.5mol/L ~ 8mol/L, the concentration of described ethanolic soln is at 2.0mol/L ~ 8mol/L, after described pre-treatment wood powder pH be 5.0 ~ 6.5, solution temperature be in the trimeric cyanamide saturated aqueous solution of 85 DEG C ~ 100 DEG C stir 0.5 hour ~ 5 hours, 100 DEG C ~ 130 DEG C thermal treatments 0.8 hour ~ 2 hours after drying, obtain 80 ~ 110 object modified wood powders, plasticization temperature is at 150 ~ 160 DEG C, material rate of cooling is 110 ~ 120 DEG C/min, in above parameter area, all can realize object of the present invention.
In wood plastic composite of the present invention, paper waste content is high, and production cost is low, easily degrades, and has excellent mechanical property, and flame retardant properties is good.The present invention is with paper waste, plastic waste for main raw material, and raw material sources are wide, and recycle paper waste, plastic waste, both protected environment and in turn saved resource.Containing a large amount of xylons in paper waste, containing a large amount of resins in plastic waste, the wood plastics composite fiber adopting method of the present invention to produce overcomes the problem of consistency difficulty between xylon and resin, the wooden plastic fiber utilizing the present invention to produce, the content of its vegetable fibre is high, the properties-correcting agent used is few, and cost is low.Owing to containing Mierocrystalline cellulose, hemicellulose, xylogen and other small molecular ester materials in paper waste, modification need be carried out to wooden paper waste in advance with sodium hydroxide solution and ethanolic soln, extract these Unstable Substances, after extracting, waste paper surface and internal reservation go out gap, be conducive to the immersion of later stage trimeric cyanamide hydrothermal solution, through cooling fast, filtering and after thermal treatment, waste paper is closely coated by trimeric cyanamide.The Unstable Substance such as hemicellulose, small molecular ester in paper waste can be divested preferably due to sodium hydroxide solution and ethanolic soln, promote closely coated to waste paper of trimeric cyanamide, thus the present invention by waste paper in advance successively through sodium hydroxide solution and alcohol solution dipping.Described concentration of sodium hydroxide solution is 0.5mol/L ~ 8mol/L, and ethanol solution concentration is 2.0mol/L ~ 8mol/L, can reach good effect.
Table 1 table with test results
Although specifically show in conjunction with preferred embodiment and describe the present invention; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (2)
1. the preparation method of a flame-retardant wood-plastic composite material: it is characterized in that, comprise the following steps:
(1) pre-treatment of paper waste: by paper waste successively after concentration be 0.5mol/L ~ 8mol/L sodium hydroxide solution and concentration is 2.0mol/L ~ 8mol/L alcohol solution dipping washing to neutral, pretreated wood powder is obtained after oven dry, be 5.0 ~ 6.5 by pretreated wood powder at pH, solution temperature is stir 0.5 hour ~ 5 hours in the trimeric cyanamide saturated aqueous solution of 85 DEG C ~ 100 DEG C, again material is quickly cooled to less than 30 DEG C after end to be mixed, after filtration, 100 DEG C ~ 130 DEG C thermal treatments 0.8 hour ~ 2 hours after drying, obtain 80 ~ 110 object modified wood powders, for subsequent use,
(2) blended: mixing 100 weight parts through pretreated paper waste high-speed stirring together with 20 ~ 40 weight part waste or used plastics and 2 ~ 5 weight part thermo-stabilizers, 1 ~ 2 parts by weight of maleic grafted polyethylene is added when temperature reaches 70 ~ 75 DEG C, the hydrated metal oxide of 12 ~ 20 weight parts, lubricant 1 ~ 3 weight part, when temperature reaches 110 DEG C, add the ethylene bis stearamide of 0.5 ~ 1 weight part, the mineral filler of 10 ~ 15 weight parts, the antioxidant of 3 ~ 4 weight parts, high-speed stirring, continue heat temperature raising, when temperature reaches 120 DEG C, stop stirring,
(3) extrusion moulding: forcing machine delivered to by the material after step (2) being processed, at the temperature of 150 ~ 160 DEG C, make material fully plastify, afterwards the material plastified is clamp-oned in forming mould, under the effect of squeeze, make material extrusion moulding, be i.e. obtained flame-retardant wood-plastic composite material.
2. the preparation method of flame-retardant wood-plastic composite material according to claim 1, is characterized in that: in described step (1), material rate of cooling is 110 ~ 120 DEG C/min.
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| CN108547425A (en) * | 2018-04-26 | 2018-09-18 | 合肥慧林建材有限公司 | A kind of environment-friendlyweather-proof weather-proof wood moulding floor tile and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534066A (en) * | 2003-04-02 | 2004-10-06 | 范洪利 | Environmental protection type plastic wood floor decorative board and its making method |
| CN102276900A (en) * | 2011-07-19 | 2011-12-14 | 林世旺 | Waste paper pulp moulding wood plastic composite material and preparation method thereof |
| CN102321374A (en) * | 2011-07-29 | 2012-01-18 | 东北林业大学 | Fire-retardant polyolefin based wood plastic composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534066A (en) * | 2003-04-02 | 2004-10-06 | 范洪利 | Environmental protection type plastic wood floor decorative board and its making method |
| CN102276900A (en) * | 2011-07-19 | 2011-12-14 | 林世旺 | Waste paper pulp moulding wood plastic composite material and preparation method thereof |
| CN102321374A (en) * | 2011-07-29 | 2012-01-18 | 东北林业大学 | Fire-retardant polyolefin based wood plastic composite material and preparation method thereof |
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