CN105906921A - Halogen-free flame-retardant wood-plastic composite material - Google Patents
Halogen-free flame-retardant wood-plastic composite material Download PDFInfo
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- CN105906921A CN105906921A CN201610518123.3A CN201610518123A CN105906921A CN 105906921 A CN105906921 A CN 105906921A CN 201610518123 A CN201610518123 A CN 201610518123A CN 105906921 A CN105906921 A CN 105906921A
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- 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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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C08L2201/02—Flame or fire retardant/resistant
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- 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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- 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
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Abstract
The invention discloses a halogen-free flame-retardant wood-plastic composite material which is composed of the following components in parts by weight: 4-6 parts of epoxy acrylic resin, 4-6 parts of polyvinyl butyral resin, 0.6-0.8 part of initiator, 3-5 parts of polyaluminosiloxane, 3-5 parts of polytitanium siloxane, 40-50 parts of wood fiber powder, 25-30 parts of plastic, 4-8 parts of flame retardant, 3-5 parts of compatilizer, 2-4 parts of glass fiber, 3-7 parts of calcium carbonate fiber, 5-7 parts of aluminum oxide hollow sphere and 1-3 parts of lubricant. The composite material has the advantages of small addition amount, favorable flame retardancy, favorable mechanical properties and the like, is a veritable wood-plastic composite material in sunrise industry, and has broad market development prospects.
Description
Technical field
The present invention relates to a kind of Halogen-free flame-retardant wood-plastic composite material, belong to wood plastic composite technology neck
Territory.
Background technology
Wood plastic composite (Wood-Plastic Composites, WPC) is to use thermoplastic material
Expect as matrix, using the plant powder of pretreatment or wood-fibred as filler or reinforcement, by necessarily than
Example mixes, through the side extruding, be laminated, mold or being molded with the various auxiliary agents needed for interpolation
A kind of composite that formula is prepared as.It has preferable elastic modelling quantity, resistance to compression, counter-bending, durable
Etc. performance, the most also there is raw material resources, cost economization, product plasticization, use environmental protection
With features such as reclaimings.Therefore, wood plastic composite can be used widely in many fields.
Although wood plastic composite has some dual premium properties of timber and plastics concurrently, and it is to ring
The advantages such as border is friendly and recyclable, but because wood plastic composite is by the combination of two kinds of combustible materials
Body, its inflammability becomes the obvious shortcoming of wood plastic composite, thus inhibits in suitable degree
Its range of application.Therefore, wood plastic composite is carried out flame treatment, it has also become promotion industry is sent out
One of key issue of exhibition.
At present, most of traditional approach being all utilized in adding in wood plastic composite fire retardant carry
Its anti-flammability high, conventional fire retardant has halogen system type (such as tetrabromo dipentaerythritol), inorganic fill type
(such as magnesium hydroxide), intumescent (APP) and synergetic (antimony oxide).Although adding these
Fire retardant can obtain certain fire resistance, but there are some problems: halogen system type fire retardant is burned
The pollutant produced in journey, constitutes a lot of threat to environment with the mankind；Filled-type fire retardant addition ratio
Relatively big, the mechanical mechanics property of material there is is the biggest impact；It is fine that expansion type flame retardant can reduce wood
The thermal degradation temperature of dimension, also can affect the mechanical mechanics property of material；Collaborative type flame-retardant agent can not be at wood
Being used alone in plastic composite materials, it can only play collaborative booster action.
In order to solve this technical problem, wood plastic composite flame-proof treatment method is carried out deeply by people
Research.In recent years, 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 Granted publication
Number: CN101570639B) " patent disclose a kind of flame-retardant wood-plastic composite and preparation side thereof
Method, its fire retardant used be based on melamine pyrophosphate salt or polyphosphoric acid melamine salt,
With starch be auxiliary carbon forming agent,Molecular sieve be synergist, Firebrake ZB be the expansion that smoke suppressant is constituted
Type fire retardant.Although the method can obtain preferable fire resistance, but addition is bigger, neither
Economy, and cause material cost to increase, furthermore the most unfavorable to its mechanical property.Therefore, research is continued
It is necessary with explore wood plastic composite there is higher anti-flammability.
Summary of the invention
Bigger for expanding fire retardant addition in above-mentioned prior art, disadvantageous to its mechanical property
Technical problem, the technical problem to be solved is to propose that a kind of addition is little, fire resistance
The halogen-free high-fire-resistance wood plastic composite that good, mechanical property is good.
A kind of Halogen-free flame-retardant wood-plastic composite material, through scientific matching by following parts by weight of composition
Become: epoxy acrylic resin 4～6 parts, polyvinyl butyral resin 4～6 parts, initiator 0.6～0.8
Part, polyaluminosiloxane 3～5 parts, polytitanosiloxane 3～5 parts, wood fiber powder 40～50 parts, plastics
25～30 parts, fire retardant 4～8 parts, compatilizer 3～5 parts, glass fibre 2～4 parts, calcium carbonate fiber
3～7 parts, alumina hollow ball 5～7 parts, lubricant 1～3 parts.
Preferably,
A kind of Halogen-free flame-retardant wood-plastic composite material, through scientific matching by following parts by weight of composition
Become: epoxy acrylic resin 5 parts, polyvinyl butyral resin 5 parts, initiator 0.7 part, PVC insulated nylon sheathed building wire
4 parts of oxygen alkane, polytitanosiloxane 4 parts, wood fiber powder 45 parts, 28 parts of plastics, fire retardant 6 parts, phase
Hold agent 4 parts, 3 parts of glass fibre, calcium carbonate fiber 5 parts, alumina hollow ball 6 parts, lubricant 2 parts.
Described initiator is by 1～3 part of di-t-butyl peroxide, 2～4 parts of peroxy dicarbonate diisopropyls
Ester, 1～3 part of peroxidation sulfuric acid ammonium are made；
Described wood fiber powder is made up of wood chip, bamboo bits, agricultural residues powder and powdered rice hulls,
And process in the following order:
A) first wood fiber powder is ground into 100～120 mesh, then with 60～80 DEG C, mass fraction
Alkali alcoholic solution (NaOH and the ethanol composition) immersion 1～2h of 5%, is eventually adding mass fraction
It is 5～7 that the acetic acid of 5% is adjusted to pH；
B) add 0.3～0.5% complex enzyme (mass fraction be 0.5～1% pectase and mass fraction be
0.5～1.5% cellulase composition), ball milling 40～60min；
C) in step B gained enzyme solutions, 1% Ludox and 2% dimethicone, juxtaposition it are sequentially added into
It is on 30～40KHz ultrasonic machines ultrasonic 20～30min in frequency, filters；
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 by 30～40 parts of polyethylene (PE), 10～15 parts of polypropylene (PP), 10～15 parts
Polyvinyl chloride (PVC) is made, and processes in such a way: takes plastics 25～30 parts, will draw
Send out agent 0.6～0.8 part, polyaluminosiloxane 3～5 parts, polytitanosiloxane 3～5 parts add to plastics,
Mixing, adds mixture into extruder extruding pelletization at 150～200 DEG C, obtains modified plastics；
Described fire retardant is by 2～4 parts of nanomete talc powders, 6～8 parts of ammonium dihydrogen phosphates, 3～7 parts of phosphoric acid
Tributyl, 10～15 parts of perlites, 20～30 parts of melamine resins are made, and are carried out in the following order
Process:
1) first perlite is placed in 800～900 DEG C of Muffle furnaces calcining 1～2h, be then comminuted into 60～
120 mesh, and add 10～15% absolute ethyl alcohol, after ball milling 6～8h, thus obtain to moisture content be 1～
3%, fineness is the 600～800 perlitic fine powders of mesh；
2) nanomete talc powder, ammonium dihydrogen phosphate, tributyl phosphate high mixed on low speed it are sequentially added into；
3) mixture using microcapsules technology to obtain step 2 with melamine resin for lapping is carried out
Parcel.
Described compatilizer is poly-by 4～6 parts of maleic anhydride grafted polyethylenes, 2～4 parts of maleic anhydride grafting
Propylene, 2～4 parts of ethylene/acrylic acid copolymer mix；
Lubricant is paraffin；
Described glass fibre, a length of the 2 of calcium carbonate fiber～5mm.
Epoxy acrylic resin compounds with polyvinyl butyral resin, fully they good mobility
With wetability, beneficially wood fiber powder, glass fibre, calcium carbonate fiber are with polymer each other
Produce physical entanglement and homodisperse coordinative role, meanwhile, its can also increase fiber wellability and
Caking property, thus improve the intensity of composite.
Polyaluminosiloxane compounds with polytitanosiloxane, makes have low degradation rate in composite, promotes
Become the effect of charcoal.In combustion, the degraded of polyaluminosiloxane, polytitanosiloxane and composite
Product interacts, produce cross-linked structure, Si, Al and Ti accumulate in material surface formed uniformly,
Fine and close Si, Al, Ti insulating barrier, stops the transmission of oxygen, heat and imflammable gas effectively,
Thus effectively improve the fire resistance of composite.Meanwhile, polyaluminosiloxane and polytitanosiloxane energy
Improve plastics and wood fiber powder compatibility between the two, so that wood plastic composite has well
Mechanical property.
Although the alkali alcohol of routine processes can dissolve the part pectin in wood fiber powder and hemicellulose etc.
Low molecule impurity, but fail to completely remove impurity.Therefore, pectase and fiber are added in the present invention
Element enzyme, makes the pectin in wood fiber powder and hemicellulose fully be dissolved, becomes to fiber surface
More coarse, thus enhance cohesive force between fiber and resin boundary surface.Meanwhile, impurity is wooden after dissolving
Fiber powder Surface and internal structure can produce space, beneficially Ludox and dimethicone infiltration and
Closely it is coated with wood fiber powder, so that wood fiber powder can blend in one with plastics well
Body, thus obtain composite and there is good plasticity.
Fire retardant is to be formed by mineral-type and organic fire retardant are compounding, makes full use of inorganic, organic
The flame retardant effect of fire retardant, the most also utilizes nanometer technology and microcapsules technology, makes fire resistance more preferably
Superior.Additionally, also go to replace Quadrafos with nanomete talc powder, ammonium dihydrogen phosphate, tributyl phosphate,
To decrease the consumption of Quadrafos, can also reduce simultaneously to composite materials property unfavorable because of
Element.
In composite preparation process, alumina hollow ball can with wood fiber powder, glass fibre,
There is rubbing action between calcium carbonate fiber, make fibre bundle split into less fiber, and add fibre
The surface area of dimension combines with the effective of matrix, thus improves the performance of composite；Meanwhile, oxidation
Aluminium hollow ball has good heat insulating function, and heat can be suppressed in combustion to transmit, and increases composite wood
The fire resistance of material.Additionally, glass fibre, calcium carbonate fiber compound with wood fiber powder, assist
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 and polytitanosiloxane compounding can not only effectively stop oxygen, heat and
The transmission of imflammable gas, and plastics and wood fiber powder compatibility between the two can also be improved,
So can effectively improve the flame retardant property of composite, can improve again it has good machine simultaneously
Tool mechanical property.
2, have employed in the present invention at pectase and cellulase, Ludox and dimethicone
Reason wood fiber powder, enhances cohesive force between fiber and resin boundary surface, thus improves composite tool
There is good plasticity feature.
3, fire retardant have employed that mineral-type and organic fire retardant be compounding, nanometer technology and microcapsules skill
Art, makes fire resistance the most superior.Meanwhile, also with nanomete talc powder, ammonium dihydrogen phosphate, tricresyl phosphate
Butyl ester goes to replace Quadrafos, not only reduces the consumption of Quadrafos, also reduces composite
The unfavorable factor of mechanical property, and improve composite there is preferable fire resistance.
4, occur between alumina hollow ball energy and wood fiber powder, glass fibre, calcium carbonate fiber
Rubbing action and good heat insulating function, so can improve the flame retardant property of composite, the most again
Its mechanical mechanics property can be improved.
Detailed description of the invention
The present invention provides a kind of Halogen-free flame-retardant wood-plastic composite material, to achieve the object of the present invention, skill
Art scheme and effect are clearer, clear and definite, and the present invention is described in more detail below.
A kind of Halogen-free flame-retardant wood-plastic composite material, through scientific matching by following parts by weight of composition
Become: epoxy acrylic resin 4～6 parts, polyvinyl butyral resin 4～6 parts, initiator 0.6～0.8
Part, polyaluminosiloxane 3～5 parts, polytitanosiloxane 3～5 parts, wood fiber powder 40～50 parts, plastics
25～30 parts, fire retardant 4～8 parts, compatilizer 3～5 parts, glass fibre 2～4 parts, calcium carbonate fiber
3～7 parts, alumina hollow ball 5～7 parts, lubricant 1～3 parts；
Described initiator is by 1～3 part of di-t-butyl peroxide, 2～4 parts of peroxy dicarbonate diisopropyls
Ester, 1～3 part of peroxidation sulfuric acid ammonium are made；
Described wood fiber powder is by plants such as wood chip, bamboo bits, agricultural residues powder and powdered rice hulls
Fiber powder forms, and processes in the following order:
A) first wood fiber powder is ground into 100～120 mesh, then with 60～80 DEG C, mass fraction
Alkali alcoholic solution (NaOH and the ethanol composition) immersion 1～2h of 5%, is eventually adding mass fraction
It is 5～7 that the acetic acid of 5% is adjusted to pH；
B) add 0.3～0.5% complex enzyme (mass fraction be 0.5～1% pectase and mass fraction be
0.5～1.5% cellulase composition), ball milling 40～60min；
C) in step B gained enzyme solutions, 1% Ludox and 2% dimethicone, juxtaposition it are sequentially added into
It is on 30～40KHz ultrasonic machines ultrasonic 20～30min in frequency, filters；
D) being dried to moisture content at 110～120 DEG C is 1～3%, i.e. can get modified wooden fibre
Dimension powder.
Described plastics by 30～40 parts of polyethylene (PE), 10～15 parts of polypropylene (PP), 10～15 parts
Polyvinyl chloride (PVC) combines, and processes in such a way: take plastics 25～30 parts,
Initiator 0.6～0.8 part, polyaluminosiloxane 3～5 parts, polytitanosiloxane 3～5 parts are added to plastics
In, mixing, add mixture into extruder extruding pelletization at 150～200 DEG C, obtain modified plastics；
Described fire retardant is by 2～4 parts of nanomete talc powders, 6～8 parts of ammonium dihydrogen phosphates, 3～7 parts of phosphoric acid
Tributyl, 10～15 parts of perlites, 20～30 parts of melamine resins combine, and in the following order
Process:
1) first perlite is placed in 800～900 DEG C of Muffle furnaces calcining 1～2h, be then comminuted into 60～
120 mesh, and add 10～15% absolute ethyl alcohol, ball milling 6～8h；Thus obtain to moisture content be 1～
3%, fineness is the 600～800 perlitic fine powders of mesh；
2) nanomete talc powder, ammonium dihydrogen phosphate, tributyl phosphate high mixed on low speed it are sequentially added into；
3) mixture using microcapsules technology to obtain step 2 with melamine resin for lapping is carried out
Parcel.
Described compatilizer is poly-by 4～6 parts of maleic anhydride grafted polyethylenes, 2～4 parts of maleic anhydride grafting
Combine after propylene, 2～4 parts of ethylene/acrylic acid copolymer mixing；
Lubricant is paraffin；
Described glass fibre, a length of the 2 of calcium carbonate fiber～5mm.
Embodiment 1
A kind of Halogen-free flame-retardant wood-plastic composite material, through scientific matching by following parts by weight of composition
Become: epoxy acrylic resin 5 parts, polyvinyl butyral resin 5 parts, initiator 0.7 part, PVC insulated nylon sheathed building wire
4 parts of oxygen alkane, polytitanosiloxane 4 parts, wood fiber powder 45 parts, 28 parts of plastics, fire retardant 6 parts, phase
Hold agent 4 parts, 3 parts of glass fibre, calcium carbonate fiber 5 parts, alumina hollow ball 6 parts, lubricant 2 parts.
Embodiment 2
A kind of Halogen-free flame-retardant wood-plastic composite material, through scientific matching by following parts by weight of composition
Become: epoxy acrylic resin 4 parts, polyvinyl butyral resin 4 parts, initiator 0.6 part, PVC insulated nylon sheathed building wire
3 parts of oxygen alkane, polytitanosiloxane 3 parts, wood fiber powder 40 parts, 25 parts of plastics, fire retardant 4 parts, phase
Hold agent 3 parts, 2 parts of glass fibre, calcium carbonate fiber 3 parts, alumina hollow ball 5 parts, lubricant 1 part.
Embodiment 3
A kind of Halogen-free flame-retardant wood-plastic composite material, through scientific matching by following parts by weight of composition
Become: epoxy acrylic resin 6 parts, polyvinyl butyral resin 6 parts, initiator 0.8 part, PVC insulated nylon sheathed building wire
5 parts of oxygen alkane, polytitanosiloxane 5 parts, wood fiber powder 50 parts, 30 parts of plastics, fire retardant 8 parts, phase
Hold agent 5 parts, 4 parts of glass fibre, calcium carbonate fiber 7 parts, alumina hollow ball 7 parts, lubricant 3 parts.
The Halogen-free flame-retardant wood-plastic composite material prepared by above-described embodiment 1-3 uses prior art to enter
The test of row physical and mechanical properties 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, not with this above
Limit the practical range of the present invention, the equivalence change that all principles under this invention, structure and structure are made
Change, all should be covered by protection scope of the present invention.
Claims (5)
1. a Halogen-free flame-retardant wood-plastic composite material, it is characterised in that: through scientific matching by following
Parts by weight of composition forms: epoxy acrylic resin 4～6 parts, polyvinyl butyral resin 4～6 parts,
Initiator 0.6～0.8 part, polyaluminosiloxane 3～5 parts, polytitanosiloxane 3～5 parts, wood fiber powder
40～50 parts, plastics 25～30 parts, fire retardant 4～8 parts, compatilizer 3～5 parts, glass fibre 2～4
Part, calcium carbonate fiber 3～7 parts, alumina hollow ball 5～7 parts, lubricant 1～3 parts；
Described initiator is by 1～3 part of di-t-butyl peroxide, 2～4 parts of peroxy dicarbonate diisopropyls
Ester, 1～3 part of peroxidation sulfuric acid ammonium combination are made；
Described compatilizer is poly-by 4～6 parts of maleic anhydride grafted polyethylenes, 2～4 parts of maleic anhydride grafting
Propylene, 2～4 parts of ethylene/acrylic acid copolymer mix；
Lubricant is paraffin；
Described glass fibre, a length of the 2 of calcium carbonate fiber～5mm.
Halogen-free flame-retardant wood-plastic composite material the most according to claim 1, it is characterised in that: warp
Scientific matching is formed by following parts by weight of composition: epoxy acrylic resin 5 parts, polyvinyl alcohol contracting fourth
Urea formaldehyde 5 parts, initiator 0.7 part, polyaluminosiloxane 4 parts, polytitanosiloxane 4 parts, wood fiber powder
45 parts, 28 parts of plastics, fire retardant 6 parts, compatilizer 4 parts, 3 parts of glass fibre, calcium carbonate fiber 5 parts,
Alumina hollow ball 6 parts, lubricant 2 parts.
Halogen-free flame-retardant wood-plastic composite material the most according to claim 1, it is characterised in that: institute
The wood fiber powder stated is by plant fiber powders such as wood chip, bamboo bits, agricultural residues powder and powdered rice hulls
Combine, and process in the following order:
A) first wood fiber powder is ground into 100～120 mesh, then with 60～80 DEG C, mass fraction
Alkali alcoholic solution (NaOH and the ethanol composition) immersion 1～2h of 5%, is eventually adding mass fraction
It is 5～7 that the acetic acid of 5% is adjusted to pH；
B) add 0.3～0.5% complex enzyme (mass fraction be 0.5～1% pectase and mass fraction be
0.5～1.5% cellulase composition), ball milling 40～60min；
C) in step B gained enzyme solutions, 1% Ludox and 2% dimethicone, juxtaposition it are sequentially added into
It is on 30～40KHz ultrasonic machines ultrasonic 20～30min in frequency, filters；
D) being dried to moisture content at 110～120 DEG C is 1～3%, i.e. can get innovation wood matter fiber powder.
Halogen-free flame-retardant wood-plastic composite material the most according to claim 1, it is characterised in that: institute
The plastics stated are by 30～40 parts of polyethylene (PE), 10～15 parts of polypropylene (PP), 10～15 parts of polychlorostyrene second
Alkene (PVC) combines, and processes in such a way: take plastics 25～30 parts, will cause
Agent 0.6～0.8 part, polyaluminosiloxane 3～5 parts, polytitanosiloxane 3～5 parts add to plastics, mixed
Even, add mixture into extruder extruding pelletization at 150～200 DEG C, obtain modified plastics.
Halogen-free flame-retardant wood-plastic composite material the most according to claim 1, it is characterised in that: institute
The fire retardant stated by 2～4 parts of nanomete talc powders, 6～8 parts of ammonium dihydrogen phosphates, 3～7 parts of tributyl phosphates,
10～15 parts of perlites, 20～30 parts of melamine resins are made, and are processed in the following order:
1) first perlite is placed in 800～900 DEG C of Muffle furnaces calcining 1～2h, be then comminuted into 60～
120 mesh, and add 10～15% absolute ethyl alcohol, ball milling 6～8h；Thus obtain to moisture content be 1～
3%, fineness is the 600～800 perlitic fine powders of mesh；
2) nanomete talc powder, ammonium dihydrogen phosphate, tributyl phosphate high mixed on low speed it are sequentially added into；
3) mixture using microcapsules technology to obtain step 2 with melamine resin for lapping is carried out
Parcel.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034079A (en) * | 2017-12-29 | 2018-05-15 | 成都新柯力化工科技有限公司 | A kind of thermoplasticity perlite and preparation method for PVC plastic |
| CN109135314A (en) * | 2018-08-31 | 2019-01-04 | 芜湖亚太通用托盘包装有限公司 | A kind of wood plastic composite pallet |
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| CN109135314A (en) * | 2018-08-31 | 2019-01-04 | 芜湖亚太通用托盘包装有限公司 | A kind of wood plastic composite pallet |
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