CN108976643A - A kind of fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity and preparation method thereof - Google Patents
A kind of fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity and preparation method thereof 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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C08K2003/2241—Titanium dioxide
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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- C08K2003/326—Magnesium phosphate
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- 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
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- C—CHEMISTRY; METALLURGY
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- 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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Abstract
The present invention provides a kind of fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity and preparation method thereof, is related to technical field of polymer materials.The fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity of the present invention is prepared from the following raw materials: Corvic, miberal powder, tricresyl phosphate, lubricant, toughener, fire retardant, compatilizer.The mechanical property of the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity of the present invention can reach using standard, and the flame retardant property of polyvinyl chloride can be greatly improved, make to improve security performance when in use according to pvc material, thermal stability is good, will not decompose and release pernicious gas in process, improves the service life of process equipment, safety and environmental protection, beneficial human health, and toughness with higher, good mechanical strength.
Description
Technical field
The present invention relates to technical field of polymer materials, and in particular to a kind of fire-retardant miberal powder filling polyvinyl chloride of superhigh tenacity
Material and preparation method thereof.
Background technique
Polyvinyl chloride is the thermoplastic resin being polymerized under initiator effect by vinyl chloride.Since polyvinyl chloride has
The advantages that chemical resistance is high, electrical insulation capability is good, physical and chemical performance is stable, cheap, is widely used in work
Each field such as industry, agricultural, traffic, building, communication and health care.But pure polyvinyl chloride is in mechanical strength, toughness, fire-retardant
Performance etc. has certain defect, limits its use.In order to improve the fire-retardant and mechanical performance of polyvinyl chloride, usually also
Need to be added other components, such as fire retardant, filler.In order to meet the requirement of certain mechanical performances and high fire-retardance, fire retardant and
The additive amount of filler is generally all very big, and the component of these additions usually all cannot be compatible with Corvic well, another
Aspect needs a large amount of additive to can be only achieved needs since the mutual synergistic effect between these additives does not play rationally
Effect, the processing flowability so as to cause final polyvinyl chloride composite materials substantially reduces.Moreover, because its very poor heat
Stability is extremely easy in decomposition in process and releases a large amount of pernicious gases, corrodes process equipment and is detrimental to health, makes it
Using being very limited.
Therefore, it is particularly important to develop a kind of fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity.
Summary of the invention
For technical problem in the prior art, the present invention provides a kind of fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity
And preparation method thereof.
In order to achieve the above object, technical solution of the present invention is achieved by the following technical programs:
A kind of fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity, the fire-retardant miberal powder filling polyvinyl chloride of superhigh tenacity
Material is made of raw material from the following weight: 35-70 parts of Corvic, 20-40 parts of miberal powder, tricresyl phosphate 5-10
Part, 1-4 parts of lubricant, 1-4 parts of toughener, 3-7 parts of fire retardant, 2-5 parts of compatilizer.
Preferably, the fire-retardant miberal powder filling polyvinyl chloride material of the superhigh tenacity is made of raw material from the following weight: poly-
It is 45-60 parts of vinyl chloride resin, 25-34 parts of miberal powder, 6-9 parts of tricresyl phosphate, 2-3 parts of lubricant, 2-3 parts of toughener, fire-retardant
4-6 parts of agent, 3-4 parts of compatilizer.
Preferably, the fire-retardant miberal powder filling polyvinyl chloride material of the superhigh tenacity is made of raw material from the following weight: poly-
52 parts of vinyl chloride resin, 30 parts of miberal powder, 8 parts of tricresyl phosphate, 2.5 parts of lubricant, 2.5 parts of toughener, 5 parts of fire retardant, phase
Hold 3.5 parts of agent.
Preferably, the partial size of the miberal powder is 20-50nm.
Preferably, the miberal powder is one of calcium carbonate, talcum powder, wollastonite, titanium dioxide.
Preferably, the PVC resin polymerization degree is in 700-1000.
Preferably, the lubricant is atoleine, stearic amide, silicone master batch, lignite wax, pentaerythrite stearic acid
Ester, silicone oil, N, at least one of N- ethylene bis stearic acid amide.
Preferably, the toughener be haloflex, acryl-butadiene-styrol copolymer, in silicon rubber extremely
Lack one kind, wherein butadiene content >=60% in acryl-butadiene-styrol copolymer.
Preferably, the fire retardant is compounded by the raw material of following parts by weight: 50-80 parts of ammonium polyphosphate, grafting Malaysia
10-15 parts of acid anhydrides, 2-10 parts of nano kaoline, the grafting rate of the grafted maleic anhydride are 1.2-2%；The toughener is benzene
Ethylene elastomer or polyolefin elastomer；The compatilizer is styrene-maleic anhydride copolymer SMA.
A kind of preparation method of the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity, comprising the following steps:
S1, each raw material is weighed according to parts by weight；
S2, Corvic, miberal powder, tricresyl phosphate are added to 60-75 DEG C of mixed at high speed in high-speed mixer
5-8min, the mixing velocity 650-700r/min of high-speed mixer, is cooled to room temperature, obtains pre-composition；
S3, lubricant, toughener, fire retardant, compatilizer are added step S2 and obtained in pre-composition after mixing, addition
It into double screw extruder, squeezes out after melting, through cooling, air-dries, pelletizing；Wherein, each area's temperature of double screw extruder
Are as follows: 200-210 DEG C of an area, two 210-220 DEG C of areas, 220-230 DEG C of 3rd area to 5th areas, six 210-220 DEG C of area's temperature, screw speed
Control is in 380-420rpm.
The present invention provides a kind of fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity and preparation method thereof, with the prior art
It is compared to advantage:
The mechanical property of the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity of the present invention can reach using standard, and
The flame retardant property of polyvinyl chloride can be greatly improved, make to improve security performance, thermal stability when in use according to pvc material
It is good, pernicious gas will not be decomposed and released in process, improves the service life of process equipment, and safety and environmental protection is beneficial
Human health, and toughness with higher, good mechanical strength；
The fire-retardant miberal powder filling polyvinyl chloride material feedstock of superhigh tenacity of the present invention adds miberal powder, phosphorus in Corvic
Sour front three phenyl ester, lubricant, toughener, fire retardant, compatilizer, each group is good with Corvic compatibility, between additive
Mutual synergistic effect, the partial size of miberal powder is smaller, softer, smaller with the frictional force of mold, can largely reduce mould
The maintenance time of tool；Miberal powder influences the impact strength of Corvic smaller simultaneously, so that the finally toughness of obtained material
It is higher.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below with reference to the embodiment of the present invention pair
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Embodiment 1:
The fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity is made of raw material from the following weight: polychlorostyrene second
35 parts of olefine resin, 20 parts of miberal powder, 5 parts of tricresyl phosphate, 1 part of lubricant, 1 part of toughener, 3 parts of fire retardant, 2 parts of compatilizer；
Wherein, the partial size of miberal powder is 20nm, and miberal powder is calcium carbonate；PVC resin polymerization degree is in 700-1000；Lubrication
Agent is atoleine；Toughener is acryl-butadiene-styrol copolymer, and wherein acryl-butadiene-is styrene copolymerized
Butadiene content >=60% in object；Fire retardant is compounded by the raw material of following parts by weight: 50 parts of ammonium polyphosphate, grafted maleic
10 parts of acid anhydride, 2 parts of nano kaoline, the grafting rate of grafted maleic anhydride are 1.2%；Toughener is styrenic elastomer；Compatilizer
For styrene-maleic anhydride copolymer SMA；
The preparation method of the fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity, comprising the following steps:
S1, each raw material is weighed according to parts by weight；
S2, Corvic, miberal powder, tricresyl phosphate are added to 60 DEG C of mixed at high speed in high-speed mixer
5min, the mixing velocity 650r/min of high-speed mixer, is cooled to room temperature, obtains pre-composition；
S3, lubricant, toughener, fire retardant, compatilizer are added step S2 and obtained in pre-composition after mixing, addition
It into double screw extruder, squeezes out after melting, through cooling, air-dries, pelletizing；Wherein, each area's temperature of double screw extruder
Are as follows: 200 DEG C of an area, two 210 DEG C of areas, 220 DEG C of 3rd area to 5th areas, six 210 DEG C of area's temperature, screw speed are controlled in 380rpm.
Embodiment 2:
The fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity is made of raw material from the following weight: polychlorostyrene second
70 parts of olefine resin, 40 parts of miberal powder, 10 parts of tricresyl phosphate, 4 parts of lubricant, 4 parts of toughener, 7 parts of fire retardant, 5 parts of compatilizer；
Wherein, the partial size of miberal powder is 50nm, and miberal powder is talcum powder；PVC resin polymerization degree is in 700-1000；Lubrication
Agent is atoleine；Toughener is haloflex；Fire retardant is compounded by the raw material of following parts by weight: ammonium polyphosphate 80
Part, 15 parts of grafted maleic anhydride, 10 parts of nano kaoline, the grafting rate of grafted maleic anhydride are 2%；Toughener is styrene bullet
Property body；Compatilizer is styrene-maleic anhydride copolymer SMA；
The preparation method of the fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity, comprising the following steps:
S1, each raw material is weighed according to parts by weight；
S2, Corvic, miberal powder, tricresyl phosphate are added to 75 DEG C of mixed at high speed in high-speed mixer
8min, the mixing velocity 700r/min of high-speed mixer, is cooled to room temperature, obtains pre-composition；
S3, lubricant, toughener, fire retardant, compatilizer are added step S2 and obtained in pre-composition after mixing, addition
It into double screw extruder, squeezes out after melting, through cooling, air-dries, pelletizing；Wherein, each area's temperature of double screw extruder
Are as follows: 210 DEG C of an area, two 220 DEG C of areas, 230 DEG C of 3rd area to 5th areas, six 220 DEG C of area's temperature, screw speed are controlled in 420rpm.
Embodiment 3:
The fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity is made of raw material from the following weight: polychlorostyrene second
52 parts of olefine resin, 30 parts of miberal powder, 8 parts of tricresyl phosphate, 2.5 parts of lubricant, 2.5 parts of toughener, 5 parts of fire retardant, compatilizer
3.5 part；
Wherein, the partial size of miberal powder be 35nm, miberal powder be calcium carbonate, talcum powder, wollastonite according to mass ratio 1:1:1 compound and
At；PVC resin polymerization degree is in 700-1000；Lubricant is atoleine, stearic amide, silicone master batch, pentaerythrite
Stearate, N, N- ethylene bis stearic acid amide are compounded according to mass ratio 1:1:1:1:1；Toughener be haloflex,
Acryl-butadiene-styrol copolymer, silicon rubber are compounded according to mass ratio 1:1:1, wherein acryl-butadiene-benzene
Butadiene content >=60% in ethylene copolymer；Fire retardant is compounded by the raw material of following parts by weight: 65 parts of ammonium polyphosphate connects
Branch 13 parts of maleic anhydride, 6 parts of nano kaoline, the grafting rate of grafted maleic anhydride are 1.6%；Toughener is styrene elastomer
Body；Compatilizer is styrene-maleic anhydride copolymer SMA；
The preparation method of the fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity, comprising the following steps:
S1, each raw material is weighed according to parts by weight；
S2, Corvic, miberal powder, tricresyl phosphate are added to 67 DEG C of mixed at high speed in high-speed mixer
7min, the mixing velocity 680r/min of high-speed mixer, is cooled to room temperature, obtains pre-composition；
S3, lubricant, toughener, fire retardant, compatilizer are added step S2 and obtained in pre-composition after mixing, addition
It into double screw extruder, squeezes out after melting, through cooling, air-dries, pelletizing；Wherein, each area's temperature of double screw extruder
Are as follows: 205 DEG C of an area, two 215 DEG C of areas, 225 DEG C of 3rd area to 5th areas, six 215 DEG C of area's temperature, screw speed are controlled in 400rpm.
Embodiment 4:
The fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity is made of raw material from the following weight: polychlorostyrene second
45 parts of olefine resin, 25 parts of miberal powder, 6 parts of tricresyl phosphate, 2 parts of lubricant, 2 parts of toughener, 4 parts of fire retardant, 3 parts of compatilizer；
Wherein, the partial size of miberal powder be 30nm, miberal powder be talcum powder, wollastonite, titanium dioxide according to mass ratio 1:1:1 compound and
At；PVC resin polymerization degree is in 700-1000；Lubricant be silicone master batch, lignite wax, pentaerythritol stearate according to
Mass ratio 1:1:1 is compounded；Toughener be haloflex, acryl-butadiene-styrol copolymer, silicon rubber according to
Mass ratio 1:1:1 is compounded, wherein butadiene content >=60% in acryl-butadiene-styrol copolymer；Fire retardant by
The raw material of following parts by weight compounds: 75 parts of ammonium polyphosphate, 14 parts of grafted maleic anhydride, 8 parts of nano kaoline, is grafted Malaysia
The grafting rate of acid anhydrides is 1.3%；Toughener is styrenic elastomer；Compatilizer is styrene-maleic anhydride copolymer SMA；
The preparation method of the fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity, comprising the following steps:
S1, each raw material is weighed according to parts by weight；
S2, Corvic, miberal powder, tricresyl phosphate are added to 67 DEG C of mixed at high speed in high-speed mixer
7min, the mixing velocity 680r/min of high-speed mixer, is cooled to room temperature, obtains pre-composition；
S3, lubricant, toughener, fire retardant, compatilizer are added step S2 and obtained in pre-composition after mixing, addition
It into double screw extruder, squeezes out after melting, through cooling, air-dries, pelletizing；Wherein, each area's temperature of double screw extruder
Are as follows: 205 DEG C of an area, two 215 DEG C of areas, 225 DEG C of 3rd area to 5th areas, six 215 DEG C of area's temperature, screw speed are controlled in 400rpm.
Embodiment 5:
The fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity is made of raw material from the following weight: polychlorostyrene second
60 parts of olefine resin, 34 parts of miberal powder, 9 parts of tricresyl phosphate, 3 parts of lubricant, 3 parts of toughener, 6 parts of fire retardant, 4 parts of compatilizer；
Wherein, the partial size of miberal powder be 40nm, miberal powder be calcium carbonate, talcum powder, wollastonite according to mass ratio 1:1:1 compound and
At；PVC resin polymerization degree is in 700-1000；Lubricant is atoleine, silicone master batch, N, the double stearic acid acyls of N- ethylene
Amine is compounded according to mass ratio 1:1:1；Toughener is haloflex, acryl-butadiene-styrol copolymer, silicon rubber
It is compounded in glue according to mass ratio 1:1:1, wherein butadiene content >=60% in acryl-butadiene-styrol copolymer；
Fire retardant is compounded by the raw material of following parts by weight: 60 parts of ammonium polyphosphate, 12 parts of grafted maleic anhydride, 4 parts of nano kaoline,
The grafting rate of grafted maleic anhydride is 1.8%；Toughener is polyolefin elastomer；Compatilizer is styrene-maleic anhydride copolymer
Object SMA；
The preparation method of the fire-retardant miberal powder filling polyvinyl chloride material of the present embodiment superhigh tenacity, comprising the following steps:
S1, each raw material is weighed according to parts by weight；
S2, Corvic, miberal powder, tricresyl phosphate are added to 67 DEG C of mixed at high speed in high-speed mixer
7min, the mixing velocity 680r/min of high-speed mixer, is cooled to room temperature, obtains pre-composition；
S3, lubricant, toughener, fire retardant, compatilizer are added step S2 and obtained in pre-composition after mixing, addition
It into double screw extruder, squeezes out after melting, through cooling, air-dries, pelletizing；Wherein, each area's temperature of double screw extruder
Are as follows: 205 DEG C of an area, two 215 DEG C of areas, 225 DEG C of 3rd area to 5th areas, six 215 DEG C of area's temperature, screw speed are controlled in 400rpm.
The fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity prepared by embodiment 1-5 is according to following processing methods and note
Modeling standard prepares standard testing batten, and test result is as follows, and test result is as shown in table 1:
Test method: Mechanics Performance Testing, stretched respectively according to ASTM D638, ASTM D790, ASTM D256,
The test of the mechanical properties such as bending, impact.
The test of combustibility: flame retardant property test is carried out according to UL-94 standard.
Mold maintenance time: data come from certain domestic large-scale tv machine manufacturer.
Finished particle is molded into standard batten after baking 2-3 hours for 85 DEG C in baking oven, injection temperature is set as 240
℃。
The basic performance test result of the fire-retardant miberal powder filling polyvinyl chloride material of 1 superhigh tenacity of table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Tensile strength (MPa) | 63.9 | 63.7 | 65.1 | 64.3 | 63.5 |
| Bending strength (MPa) | 101.2 | 103.1 | 105.3 | 101.2 | 102.9 |
| Bending modulus (MPa) | 4185 | 4193 | 4253 | 4001 | 4250 |
| Notch impact strength (J/m) | 101.7 | 103.8 | 106.6 | 102.5 | 105.9 |
| Fire-retardant (1.6mm) | V-1 | V-0 | V-1 | V-0 | V-0 |
| Every 12h mold maintenance time (min) | 5-10 | 5-10 | 5-10 | 5-10 | 5-10 |
1 result of table explanation, whole to say, the mold maintenance time after adding miberal powder significantly reduces.Toughness of material is obviously improved,
Synergistic effect is obvious between the two, high comprehensive performance.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although ginseng
According to previous embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity, which is characterized in that the fire-retardant miberal powder of superhigh tenacity is filled out
It fills pvc material to be made of raw material from the following weight: 35-70 parts of Corvic, 20-40 parts of miberal powder, tripotassium phosphate
5-10 parts of phenyl ester, 1-4 parts of lubricant, 1-4 parts of toughener, 3-7 parts of fire retardant, 2-5 parts of compatilizer.
2. the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity according to claim 1, which is characterized in that the superelevation
Tough fire retardant miberal powder filling polyvinyl chloride material is made of raw material from the following weight: 45-60 parts of Corvic, miberal powder
25-34 parts, 6-9 parts of tricresyl phosphate, 2-3 parts of lubricant, 2-3 parts of toughener, 4-6 parts of fire retardant, 3-4 parts of compatilizer.
3. the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity according to claim 1, which is characterized in that the superelevation
Tough fire retardant miberal powder filling polyvinyl chloride material is made of raw material from the following weight: 52 parts of Corvic, 30 parts of miberal powder,
8 parts of tricresyl phosphate, 2.5 parts of lubricant, 2.5 parts of toughener, 5 parts of fire retardant, 3.5 parts of compatilizer.
4. the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity according to claim 1 or 2 or 3, it is characterised in that: institute
The partial size for stating miberal powder is 20-50nm.
5. the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity according to claim 4, it is characterised in that: the miberal powder
For one of calcium carbonate, talcum powder, wollastonite, titanium dioxide.
6. the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity according to claim 1 or 2 or 3, it is characterised in that: institute
PVC resin polymerization degree is stated in 700-1000.
7. the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity according to claim 1 or 2 or 3, it is characterised in that: institute
Stating lubricant is atoleine, stearic amide, silicone master batch, lignite wax, pentaerythritol stearate, silicone oil, N, N- ethylene
At least one of double stearic amides.
8. the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity according to claim 1 or 2 or 3, it is characterised in that: institute
Stating toughener is at least one of haloflex, acryl-butadiene-styrol copolymer, silicon rubber, wherein propylene
Butadiene content >=60% in acid-butadiene-styrene copolymer.
9. the fire-retardant miberal powder filling polyvinyl chloride material of superhigh tenacity according to claim 1, it is characterised in that: described fire-retardant
Agent is compounded by the raw material of following parts by weight: 50-80 parts of ammonium polyphosphate, 10-15 parts of grafted maleic anhydride, nano kaoline 2-
10 parts, the grafting rate of the grafted maleic anhydride is 1.2-2%；The toughener is styrenic elastomer or polyolefin elastic
Body；The compatilizer is styrene-maleic anhydride copolymer SMA.
10. a kind of preparation method of the fire-retardant miberal powder filling polyvinyl chloride material of the superhigh tenacity as described in claim 1-9 is any,
It is characterized in that, comprising the following steps:
S1, each raw material is weighed according to parts by weight；
S2, Corvic, miberal powder, tricresyl phosphate are added to 60-75 DEG C of mixed at high speed 5- in high-speed mixer
8min, the mixing velocity 650-700r/min of high-speed mixer, is cooled to room temperature, obtains pre-composition；
S3, lubricant, toughener, fire retardant, compatilizer addition step S2 are obtained in pre-composition after mixing, being added to double
It in screw extruder, squeezes out after melting, through cooling, air-dries, pelletizing；Wherein, each area's temperature of double screw extruder are as follows: one
200-210 DEG C of area, two 210-220 DEG C of areas, 220-230 DEG C of 3rd area to 5th areas, six 210-220 DEG C of area's temperature, screw speed control
In 380-420rpm.
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