CN106084839A - A kind of compositional flame-retardant wood plastic composite - Google Patents
A kind of compositional flame-retardant wood plastic composite Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07G—COMPOUNDS OF UNKNOWN CONSTITUTION
- C07G1/00—Lignin; Lignin derivatives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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Abstract
The invention discloses a kind of compositional flame-retardant wood plastic composite, the following parts by weight of composition through scientific matching form: epoxy acrylic resin 4～6 parts, initiator 0.4～0.8 part, polyaluminosiloxane 5～7 parts, wood fiber powder 50～55 parts, plastics 20～25 parts, fire retardant 4～8 parts, compatilizer 2～5 parts, glass fibre 1～4 parts, sisal fiber 4～7 parts, alumina hollow ball 5～7 parts, dispersant 0.3～0.6 part, lubricant 1～4 parts, toughener 1～3 parts.The present invention has that fire retardant addition is little, fire resistance good, the excellent feature of mechanical property, is the current preferable wood plastic composite of industry development future.
Description
Technical field
The present invention relates to a kind of compositional flame-retardant wood plastic composite, belong to wood plastic composite technical field.
Background technology
Wood plastic composite (Wood-Plastic Composites, WPC) is to use thermoplastic material as base
Body, using the plant powder of pretreatment or the wood fiber as filler or reinforcement, by a certain percentage with add needed for various auxiliary agents
Mix, a kind of composite that the mode through extruding, be laminated, mold or being molded is prepared as.It has preferable bullet
Property modulus, resistance to compression, the performance such as counter-bending, durable, the most also have raw material resources, cost economization, product plasticization, use
The feature such as environmental protection and reclaiming.Therefore, wood plastic composite can be used widely in many fields.
Although wood plastic composite has some dual properties of timber and plastics concurrently, and it is environmentally friendly and recyclable
Etc. good characteristics, but, owing to wood plastic composite is the coalition of two kinds of combustibles, its inflammability becomes wood plastic composite
Significantly shortcoming, thus in certain degree, inhibit its range of application.Therefore, wood plastic composite is carried out fire-retardant place
Reason, it has also become promote one of key issue of industry development.
At present, in wood plastic composite, great majority are all to use the traditional approach adding fire retardant to improve wood plastics composite
The anti-flammability of material, conventional fire retardant has halogen system type (such as tetrabromo dipentaerythritol), inorganic fill type (such as magnesium hydroxide), swollen
Swollen type (APP) and synergetic (stibium oxide).Although adding these fire retardants can obtain certain fire resistance, but deposit
In some problems: the pollutant produced in halogen system type fire retardant combustion process, environment is constituted a lot of threat with the mankind；Filled-type
Fire retardant addition is bigger, affects bigger on the mechanical mechanics property of material；Expansion type flame retardant can reduce the wood fiber
Thermal degradation temperature, also influences whether the mechanical mechanics property of wood plastic composite；Collaborative type flame-retardant agent can not be at wood and plastic composite
Being used alone in material, it can only play collaborative assosting effect.
In order to solve this technical problem, people carry out in-depth study to wood plastic composite flame-proof treatment method.Closely
Nian Lai, the art in its flame retarding process processing method achieved with certain Research Achievement, such as entitled " flame-retardant wood-plastic
Composite and preparation method thereof (Chinese patent Authorization Notice No.: CN101570639B) " patent disclose a kind of flame retardant type
Wood plastic composite and preparation method thereof, its fire retardant used is with melamine pyrophosphate salt or polyphosphoric acid melamine salt
For main body, with starch be auxiliary carbon forming agent,Molecular sieve be synergist, Firebrake ZB be the expansion type flame retardant that smoke suppressant is constituted.
Although the method can obtain preferable fire resistance, but addition is bigger, the most uneconomical, and causes material cost to increase,
Moreover it is the most unfavorable to its mechanical property.Therefore, it is necessary for continue research and discovery wood plastic composite having relatively high flame retardant.
Summary of the invention
Bigger for expanding fire retardant addition in above-mentioned prior art, technical problem disadvantageous to its mechanical property,
The technical problem to be solved is to propose the compounded height that a kind of addition is little, fire resistance is good, mechanical property is good
Flame-retardant wood-plastic composite.
A kind of compositional flame-retardant wood plastic composite, is formed by following parts by weight of composition through scientific matching: epoxy acrylic
Resin 4～6 parts, initiator 0.4～0.8 part, polyaluminosiloxane 5～7 parts, wood fiber powder 50～55 parts, plastics 20～25 parts,
Fire retardant 4～8 parts, compatilizer 2～5 parts, glass fibre 1～4 parts, sisal fiber 4～7 parts, alumina hollow ball 5～7 part, point
Powder 0.3～0.6 part, lubricant 1～4 parts, toughener 1～3 parts.
Preferably,
A kind of compositional flame-retardant wood plastic composite, is formed by following parts by weight of composition through scientific matching: epoxy acrylic
Resin 5 parts, initiator 0.6 part, polyaluminosiloxane 6 parts, wood fiber powder 52 parts, 22 parts of plastics, fire retardant 6 parts, compatilizer 4
Part, glass fibre 2 parts, sisal fiber 5 parts, alumina hollow ball 6 parts, dispersant 0.5 part, lubricant 3 parts, toughener 2 parts.
Described initiator is made up of 2～4 parts of dibenzoyl peroxides, 1～3 part of peroxidation sulfuric acid ammonium；
Described wood fiber powder is by plant fiber powder institute groups such as wood flour, bamboo bits, agricultural residues powder and powdered rice hulls
Become, and process in the following order:
A) first wood fiber powder is ground into 60～100 mesh, then with 50～60 DEG C, the alkali alcoholic solution of mass fraction 5%
(sodium hydroxide with ethanol composition) immersion 1～2h, being eventually adding the acetic acid of mass fraction 5% and being adjusted to pH is 5～7；
B) add 0.4～0.7% compound enzyme (mass fraction be 0.4～1% pectase and mass fraction be 0.5～1% fine
Dimension element enzyme composition), ball milling 40～60min；
C) being sequentially added into 2% dimethicone in step B gained enzymatic solution, it is 30～40KHz ultrasonic for being placed in frequency
On machine ultrasonic 20～25min, filter；
D) being dried to moisture content at 110～120 DEG C is 1～3%, i.e. can get innovation wood matter fiber powder.
Described plastics are combined by 30～35 parts of polyethylene (PE), 10～15 parts of polrvinyl chloride (PVC), and according to
Under type processes: take plastics 20～25 parts, adds initiator 0.4～0.8 part, polyaluminosiloxane 5～7 parts to plastics
In, mixing, add mixture into extruder extruding pelletization at 150～190 DEG C, obtain modified plastics；
Described fire retardant by 1～3 part of ammonium hydrogen carbonate, 10～15 parts of ammonium dihydrogen phosphates, 2～7 parts of dimethyl methyl phosphonates,
10～15 parts of montmorillonites, 25～30 parts of tetramethylolmethanes combine；
After described compatilizer is by 6～8 parts of maleic anhydride grafted polyethylenes, 1～3 part of ethylene/acrylic acid copolymer mixing
Combine；
Described dispersant is sodium lauryl sulphate；Lubricant is Tissuemat E；Toughener is ethylene/octene acid copolymerization
Thing；
Described glass fibre, a length of the 2 of sisal fiber～5mm.
Epoxy acrylic resin is the low viscous liquid of room temperature, beneficially wood fiber powder, glass fibre, sisal fiber powder
Produce physical entanglement and homodisperse coordinative role each other with polymer, meanwhile, it can also increase the wellability of fiber
And caking property, thus improve the intensity of composite.
Polyaluminosiloxane has low degradation rate in the composite, promotes into the effect of charcoal.In combustion, poly-aluminum
Siloxanes interacts with the catabolite of composite, produces cross-linked structure, Si and Al accumulates in material surface and formed
Uniformly, fine and close Si, Al insulating barrier, effectively stop the transmission of oxygen, heat and imflammable gas, thus effectively improve
The fire resistance of composite.Meanwhile, polyaluminosiloxane can improve plastics and the wood fiber powder compatibility between the two, thus
Wood plastic composite is made to have good mechanical property.
Although the alkali alcohol of routine processes can dissolve the low molecule impurity such as the part pectin in wood fiber powder and hemicellulose,
But fail to completely remove impurity.Therefore, add pectase and cellulase in the present invention, make the pectin in wood fiber powder and
Hemicellulose is fully dissolved, and becomes more coarse to fiber surface, thus enhances cohesive force between fiber and resin boundary surface.
Meanwhile, after impurity dissolves, wood fiber powder Surface and internal structure can produce the infiltration in space, beneficially dimethicone with tight
Close cladding wood fiber powder so that wood fiber powder can blend with plastics well in one, so that composite tool
There is good plasticity.
Fire retardant is to be formed by mineral-type and organic fire retardant are compounding, makes full use of inorganic, the resistance of organic fire retardant
Fuel efficiency fruit, makes fire resistance the most superior.Meanwhile, also go to replace gather with ammonium hydrogen carbonate, ammonium dihydrogen phosphate, dimethyl methyl phosphonate
Phosphate, to decrease the consumption of Quadrafos, can also reduce the unfavorable factor to composite materials property simultaneously.
In composite preparation process, between alumina hollow ball energy and wood fiber powder, glass fibre, sisal fiber
There is rubbing action, make fibre bundle split into less fiber, and add the surface area of fiber and effective combination of matrix,
Thus improve the performance of composite；Meanwhile, alumina hollow ball has good heat insulating function, can suppress heat in combustion
Amount transmission, increases the fire resistance of composite.Additionally, glass fibre, sisal fiber compound with wood fiber powder, occur collaborative
After effect, and improve the performance of Compound Material Engineering and higher flame retardant property.
Compared with prior art, the invention has the beneficial effects as follows:
1, polyaluminosiloxane can not only stop the transmission of oxygen, heat and imflammable gas effectively, and can also change
Kind plastics and the wood fiber powder compatibility between the two, so can effectively improve the fire resistance of composite, again can
Improve it and there is good mechanical property.
2, have employed pectase, cellulase and dimethicone in the present invention to process wood fiber powder, enhance
Cohesive force between fiber powder and resin boundary surface, thus improve composite and there is good plasticity feature.
3, fire retardant have employed mineral-type and organic fire retardant compounds, and makes fire resistance the most superior.Meanwhile, carbon is also used
Acid hydrogen ammonium, ammonium dihydrogen phosphate, dimethyl methyl phosphonate go to replace Quadrafos, not only reduce the consumption of Quadrafos, also drop
The low unfavorable factor to composite materials property, and improve composite there is preferable fire resistance.
4, there is rubbing action and good between alumina hollow ball energy and wood fiber powder, glass fibre, sisal fiber
Heat insulating function, so can improve the flame retardant property of composite, its mechanical mechanics property can be improved again simultaneously.
Detailed description of the invention
The present invention provides a kind of compositional flame-retardant wood plastic composite, to achieve the object of the present invention, technical scheme and effect
Clearer, clear and definite, the present invention is described in more detail below.
A kind of compositional flame-retardant wood plastic composite, is formed by following parts by weight of composition through scientific matching: epoxy acrylic
Resin 4～6 parts, initiator 0.4～0.8 part, polyaluminosiloxane 5～7 parts, wood fiber powder 50～55 parts, plastics 20～25 parts,
Fire retardant 4～8 parts, compatilizer 2～5 parts, glass fibre 1～4 parts, sisal fiber 4～7 parts, alumina hollow ball 5～7 part, point
Powder 0.3～0.6 part, lubricant 1～4 parts, toughener 1～3 parts.
Described initiator is made up of 2～4 parts of dibenzoyl peroxides, 1～3 part of peroxidation sulfuric acid ammonium；
Described wood fiber powder is made up of plant fiber powders such as wood flour, bamboo bits, agricultural crop straw and rice husks, and presses
Process according to following sequence:
A) first wood fiber powder is ground into 60～100 mesh, then with 50～60 DEG C, the alkali alcoholic solution of mass fraction 5%
(sodium hydroxide with ethanol composition) immersion 1～2h, being eventually adding the acetic acid of mass fraction 5% and being adjusted to pH is 5～7；
B) add 0.4～0.7% compound enzyme (mass fraction be 0.4～1% pectase and mass fraction be 0.5～1% fine
Dimension element enzyme composition), ball milling 40～60min；
C) being sequentially added into 2% dimethicone in step B gained enzymatic solution, it is 30～40KHz ultrasonic for being placed in frequency
On machine ultrasonic 20～25min, filter；
D) being dried to moisture content at 110～120 DEG C is 1～3%, i.e. can get modified wood fiber powder.
Described plastics are combined by 30～35 parts of polyethylene (PE), 10～15 parts of polrvinyl chloride (PVC), and according to
Under type processes: take plastics 20～25 parts, adds initiator 0.4～0.8 part, polyaluminosiloxane 5～7 parts to plastics
In, mixing, add mixture into extruder extruding pelletization at 150～190 DEG C, obtain modified plastics；
Described fire retardant by 1～3 part of ammonium hydrogen carbonate, 10～15 parts of ammonium dihydrogen phosphates, 2～7 parts of dimethyl methyl phosphonates,
10～15 parts of montmorillonites, 25～30 parts of tetramethylolmethanes combine
After described compatilizer is by 6～8 parts of maleic anhydride grafted polyethylenes, 1～3 part of ethylene/acrylic acid copolymer mixing
Combine；
Described dispersant is sodium lauryl sulphate；Lubricant is Tissuemat E；Toughener is ethylene/octene acid copolymerization
Thing；
Described glass fibre, a length of the 2 of sisal fiber～5mm.
Embodiment 1
A kind of compositional flame-retardant wood plastic composite, is formed by following parts by weight of composition through scientific matching: epoxy acrylic
Resin 5 parts, initiator 0.6 part, polyaluminosiloxane 6 parts, wood fiber powder 52 parts, 22 parts of plastics, fire retardant 6 parts, compatilizer 4
Part, glass fibre 2 parts, sisal fiber 5 parts, alumina hollow ball 6 parts, dispersant 0.5 part, lubricant 3 parts, toughener 2 parts.
Embodiment 2
A kind of compositional flame-retardant wood plastic composite, is formed by following parts by weight of composition through scientific matching: epoxy acrylic
Resin 6 parts, initiator 0.8 part, polyaluminosiloxane 7 parts, wood fiber powder 55 parts, 25 parts of plastics, fire retardant 8 parts, compatilizer 5
Part, glass fibre 4 parts, sisal fiber 7 parts, alumina hollow ball 7 parts, dispersant 0.6 part, lubricant 4 parts, toughener 3 parts.
Embodiment 3
A kind of compositional flame-retardant wood plastic composite, is formed by following parts by weight of composition through scientific matching: epoxy acrylic
Resin 4 parts, initiator 0.4 part, polyaluminosiloxane 5 parts, wood fiber powder 50 parts, 20 parts of plastics, fire retardant 4 parts, compatilizer 2
Part, glass fibre 1 part, sisal fiber 4 parts, alumina hollow ball 5 parts, dispersant 0.3 part, lubricant 1 part, toughener 1 part.
The compositional flame-retardant wood plastic composite prepared by above-described embodiment 1-3 uses prior art to carry out physical and mechanical properties
Test and fire resistance are tested, and test result is such as table 1 below, shown in 2:
Table 1 physical and mechanical properties test result
Table 2 fire resistance test result
Certainly, it is that the preferred embodiments of the disclosure is described in detail above, not limits the present invention with this
Practical range, all principles under this invention, structure and structure made equivalence change, the protection of the present invention all should be covered by
In the range of.
Claims (5)
1. a compositional flame-retardant wood plastic composite, it is characterised in that: form by following parts by weight of composition through scientific matching: ring
Oxypropylene acid resin 4～6 parts, initiator 0.4～0.8 part, polyaluminosiloxane 5～7 parts, wood fiber powder 50～55 parts, plastics
20～25 parts, fire retardant 4～8 parts, compatilizer 2～5 parts, glass fibre 1～4 parts, sisal fiber 4～7 parts, alumina hollow ball
5～7 parts, dispersant 0.3～0.6 part, lubricant 1～4 parts, toughener 1～3 parts；
Described initiator is made up of 2～4 parts of dibenzoyl peroxides, 1～3 part of peroxidation sulfuric acid ammonium combination；
Described wood fiber powder is to be combined by plant fiber powders such as wood flour, bamboo bits, agricultural residues powder and powdered rice hulls；
Described compatilizer is mixed by 6～8 parts of maleic anhydride grafted polyethylenes, 1～3 part of ethylene/acrylic acid copolymer；
Described dispersant is sodium lauryl sulphate；Lubricant is Tissuemat E；Toughener is ethylene/octene acid copolymer；
Described glass fibre, a length of the 2 of sisal fiber～5mm.
Compositional flame-retardant wood plastic composite the most according to claim 1, it is characterised in that: through scientific matching by following weight
Amount part combines: epoxy acrylic resin 5 parts, initiator 0.6 part, polyaluminosiloxane 6 parts, wood fiber powder 52 parts, plastics
22 parts, fire retardant 6 parts, compatilizer 4 parts, glass fibre 2 parts, sisal fiber 5 parts, alumina hollow ball 6 parts, dispersant 0.5 part,
Lubricant 3 parts, toughener 2 parts.
Compositional flame-retardant wood plastic composite the most according to claim 1, it is characterised in that: described wood fiber powder be by
Process according to following sequence:
A) first wood fiber powder is ground into 60～100 mesh, then with 50～60 DEG C, the alkali alcoholic solution (hydrogen-oxygen of mass fraction 5%
Change sodium and ethanol composition) immersion 1～2h, being eventually adding the acetic acid of mass fraction 5% and being adjusted to pH is 5～7；
B) add 0.4～0.7% compound enzyme (mass fraction be 0.4～1% pectase and mass fraction be 0.5～1% cellulose
Enzyme forms), ball milling 40～60min；
C) being sequentially added into 2% dimethicone in step B gained enzymatic solution, being placed in frequency is on 30～40KHz ultrasonic machines
Ultrasonic 20～25min, filter；
D) being dried to moisture content at 110～120 DEG C is 1～3%, i.e. can get innovation wood matter fiber powder.
Compositional flame-retardant wood plastic composite the most according to claim 1, it is characterised in that: described plastics are by 30～35 parts
Polyethylene (PE), 10～15 parts of polrvinyl chloride (PVC) combine, and process in such a way: take plastics 20～25
Part, initiator 0.4～0.8 part, polyaluminosiloxane 5～7 parts are added to plastics, mixing, add mixture into extruder in
Extruding pelletization at 150～190 DEG C, obtains modified plastics.
Compositional flame-retardant wood plastic composite the most according to claim 1, it is characterised in that: described fire retardant is by 1～3 part
Ammonium hydrogen carbonate, 10～15 parts of ammonium dihydrogen phosphates, 2～7 parts of dimethyl methyl phosphonates, 10～15 parts of montmorillonites, 25～30 parts of seasons penta
Tetrol combines.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106675064A (en) * | 2016-12-21 | 2017-05-17 | 凤台县双利生物科技有限公司 | Carbon fiber reinforced and modified waterproof anti-flaming type biomass plate and preparation method thereof |
| CN106675063A (en) * | 2016-12-21 | 2017-05-17 | 凤台县双利生物科技有限公司 | Lignocellulose-acrylic acid reinforced waterproof flame-retardant biomass board and preparation method thereof |
| CN110256775A (en) * | 2019-07-10 | 2019-09-20 | 无锡啄木鸟环保建材有限公司 | A kind of preparation method and product of the high-compatibility Wood-plastic profiles of flame retardant non corrosive |
| CN110951102A (en) * | 2019-11-22 | 2020-04-03 | 江苏迪迈新材料有限公司 | Flame-retardant PC board and preparation process thereof |
| CN117567813A (en) * | 2023-11-29 | 2024-02-20 | 湖南同进新材料股份有限公司 | Bamboo-wood fiber composite wallboard and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106675064A (en) * | 2016-12-21 | 2017-05-17 | 凤台县双利生物科技有限公司 | Carbon fiber reinforced and modified waterproof anti-flaming type biomass plate and preparation method thereof |
| CN106675063A (en) * | 2016-12-21 | 2017-05-17 | 凤台县双利生物科技有限公司 | Lignocellulose-acrylic acid reinforced waterproof flame-retardant biomass board and preparation method thereof |
| CN110256775A (en) * | 2019-07-10 | 2019-09-20 | 无锡啄木鸟环保建材有限公司 | A kind of preparation method and product of the high-compatibility Wood-plastic profiles of flame retardant non corrosive |
| CN110951102A (en) * | 2019-11-22 | 2020-04-03 | 江苏迪迈新材料有限公司 | Flame-retardant PC board and preparation process thereof |
| CN117567813A (en) * | 2023-11-29 | 2024-02-20 | 湖南同进新材料股份有限公司 | Bamboo-wood fiber composite wallboard and preparation method thereof |
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Application publication date: 20161109 |