CN108976580A - A kind of preparation method of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS - Google Patents
A kind of preparation method of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS Download PDFInfo
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- CN108976580A CN108976580A CN201810654122.0A CN201810654122A CN108976580A CN 108976580 A CN108976580 A CN 108976580A CN 201810654122 A CN201810654122 A CN 201810654122A CN 108976580 A CN108976580 A CN 108976580A
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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
- 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
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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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
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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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
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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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
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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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
- 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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- 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
- C08L2205/03—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
Abstract
A kind of preparation method of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS of the present invention, the preparation method is as follows: (1) prepares antioxidant；(2) fire retardant is prepared；(3) inorganic filler is prepared；(4) compatilizer is prepared；(5) it prepares CABLE MATERIALS: using special compatible agent prescription, the mechanical thermoplastic of CABLE MATERIALS can be increased substantially.High strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS of the invention is being kept outside its good mechanical performance, anti-flammability is greatly improved by using special composite flame-retardant agent and composite antioxidant formula.
Description
Technical field
The present invention is more particularly directed to a kind of preparation methods of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS.
Background technique
The outermost main material of traditional cable is polyvinyl chloride, i.e. PVC(Polyvinyl chloride
Polymer), and contain halogenated flame retardant.Polyvinyl chloride is although the CABLE MATERIALS of substrate has low price, good flame resistance and processing
The advantages such as performance is good；But material smoke amount in burning is big, generate a large amount of corrosive gas and toxic gas (such as chlorine,
HBr etc.), adverse effect is brought to fire extinguishing and personnel escape, so that fire rescue is more difficult.The corrosivity of release simultaneously
Gas, so that the electric appliance of scene of fire is corroded and is destroyed.
In addition, halogenated flame retardant production, transport, storage, reject product removal process in can toxicity accumulation and produce
Raw carcinogen.Therefore, a kind of green environmental protection cable material is developed to have been to be concerned by more and more people.
Summary of the invention
The present invention proposes a kind of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS regarding to the issue above
Preparation method.
Specific technical solution is as follows:
A kind of preparation method of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS, which is characterized in that preparation side
Method is as follows:
(1) antioxidant is prepared；High-speed stirring is added with the weight ratio of 4 ︰, 1 ︰ 2 in 1010 ︰ antioxidant DLTP ︰ antioxidant 1076 of antioxidant
It mixes in machine, mixing temperature is 55~65 DEG C, and incorporation time is 1~3H, obtains antioxidant；
(2) fire retardant is prepared；High-speed mixer is added in the weight ratio that Tai Bai Fen ︰ tri- aoxidizes 1 ︰ 3 of Er Ti ︰ tetrabromobisphenol A=2 ︰
In, mixing temperature is 65~75 DEG C, and incorporation time is 30~65min, obtains fire retardant；
(3) inorganic filler is prepared, the ratio that the weight ratio of magnesium hydroxide, montmorillonite, zinc borate is 2: 3: 1 is added to high-speed stirring
It mixes in machine, mixing temperature is 45~55 DEG C, and incorporation time is 2~3H, obtains inorganic filler；
(4) compatilizer is prepared, the weight ratio of POE-g-MAH ︰ EVA-g-MAH=2:3 is added in high-speed mixer, mixing temperature
Degree is 75~85 DEG C, and incorporation time is 1~2H, obtains compatilizer；
(5) CABLE MATERIALS: 45~60 parts of linear low density polyethylene according to parts by weight is prepared；Monoalkoxytitanates 15~23
Part；14~23 parts of ethylene-vinyl acetate copolymer；3~7 parts of compatilizer；2~4 parts of antioxidant；1~2 part of fire retardant and inorganic
30~45 parts of filler；Being added in high-speed mixer is uniformly mixed it, and by mixture first through mixer mixing, smelting temperature is
140~185 DEG C, mixing time is 1~3H, and then through twin-screw mixer, melting temperature is 160~190 DEG C, mixing time 1
~3H feeds the mixture into baking oven drying after mixing, drying temperature is 220~260 DEG C, and 7~10h of drying is solidified into mixture
Bulk material, then bulk material is cut into the cobbing of diameter about 1~2cm by guillotine, most made afterwards through single screw rod extrusion
Grain, single screw rod feed zone, melt zone and die head temperature are followed successively by 120~140 DEG C, 130~160 DEG C, 155~185 DEG C, after extrusion
Finished product.
Further, the linear low density polyethylene melt index is 4~6g/10min.
Further, the compatilizer be POE-g-MAH (maleic anhydride functional groups grafted ethene-octene copolymer) with
The mixture of EVA-g-MAH (maleic anhydride functional groups grafted ethene-acetate ethylene copolymer), mixed weight ratio are POE-g-
MAH ︰ EVA-g-MAH=2:3.
Further, in the ethylene-vinyl acetate copolymer vinyl acetate weight percent content be 35%~
38%, melt index is 6~8g/10min.
The invention has the benefit that
Using special compatible agent prescription, the mechanical thermoplastic of CABLE MATERIALS can be increased substantially.High-intensitive height of the invention is stretched
Long rate thermoplastic low-smoke halide-free CABLE MATERIALS is keeping it by using special composite flame-retardant agent and composite antioxidant formula
Outside good mechanical performance, anti-flammability is greatly improved.
Detailed description of the invention
Fig. 1 is cutting apparatus layout drawing.
Fig. 2 is part A enlarged drawing in Fig. 1.
Fig. 3 is cutting apparatus clamp assemblies radial cross-section.
Fig. 4 is cutting apparatus clamp assemblies axial sectional view.
Fig. 5 is that cutting apparatus cuts assembly plan view.
Fig. 6 is cutting apparatus limit assembly cross-sectional view.
Fig. 7 is the first compression joint mechanism of cutting apparatus side view.
Fig. 8 is that cutting apparatus cuts component radial cross-section.
Fig. 9 is part B enlarged drawing in Fig. 5.
Appended drawing reference
Workbench 1, clamp assemblies 3, cable 4, cuts component 5, limit assembly 6, the first guide groove 11, first at push component 2
Guide pad 12, the first lead screw 13, first motor 14, push assembly housing 21, delivery device 22, push rolls 23, push rod 24, the
One electric pushrod 25, push item 26, clamp assemblies shell 31, gripping channel 32, first passage 33, clamping push rod 34, niproll
35, the second electric pushrod 36, first support 37, the first compression joint mechanism 51, the second compression joint mechanism 52, cutting mechanism 53, first are pressed
Ring assemblies 54, the second pressure ring assembly 55, outer press ring 56, inner pressure ring 57, crimping push plate 58, link block 59, internal thread through hole 510,
Drive rod 511, the first external screw thread 512, the second external screw thread 513, first gear 514, the first chain 515, second gear 516,
Two motors 517, sliding rail 518, sliding block 519, the first cylinder push away 520, cutting mechanism support platform 521, saw blade 522, third gear
523, the second chain 524, the 4th gear 525, third motor 526, the second cylinder 527, crimp rings 528, limit assembly shell 61,
Limit channels 62.
Specific embodiment
It is clear to be more clear technical solution of the present invention, below the present invention is described further, any pair of sheet
The technical characteristic of inventive technique scheme carries out the scheme that equivalencing is obtained with conventional reasoning and each falls within the scope of the present invention.
Melt index mentioned in the present invention measures under the conditions of 190 DEG C × 2.16Kg according to GB/T 3682-2000.
In the embodiment of the present invention, in order to guarantee the cutting effect of final block material, using dedicated self-control cutting apparatus, tool
Body is as follows: the cutting apparatus includes workbench 1, is successively arranged push component 2 on workbench from left to right, limit assembly 6, cuts
Component 5 and clamp assemblies 3；
Push component includes the push assembly housing 21 that section is n shape structure, and delivery device shell is fixed on the table, push
In assembly housing up and down mirror image be equipped with two groups of delivery devices 22, delivery device include push rolls 23, push rod 24 and first electricity
Dynamic push rod 25 is pushed between the two side walls for being rotatably fixed on push assembly housing, one end of push rod and push rolls
It is fixedly connected, the other end of push rod is connected with the first electric pushrod, and the output end of the first electric pushrod is rotatably fixed
In push rod, the push rolls of two delivery devices are oppositely arranged for pushing the cable 4 being located between the two；
Limit assembly includes limit assembly shell 61, and limit assembly shell is fixed on the table, is equipped in limit assembly shell
Limit channels 62, limit channels are used for across cable 4；
Cutting component includes the first compression joint mechanism 51, the second compression joint mechanism 52 and cutting mechanism 53；
First compression joint mechanism and the second compression joint mechanism include crimping push plate, and crimping push plate is equipped with the first pressure ring assembly 54 and the
Two pressure ring assemblies 55, the first pressure ring assembly and the second pressure ring assembly include outer press ring 56 and inner pressure ring 57, and outer press ring is fixed on
It crimps in push plate 58, inner pressure ring is horizontally movable to be arranged in outer press ring, and the outer wall of inner pressure ring is equipped with link block 59, connection
Block is equipped with internal thread through hole 510；
It crimps and is rotatably equipped with drive rod 511 in push plate, the outer wall of drive rod is equipped with the first external screw thread 512 and the second outer spiral shell
Line 513, the first external screw thread and the second externally threaded hand of spiral on the contrary, the first pressure ring assembly and the second pressure ring assembly link block
What is be threadedly engaged respectively is set on the first external screw thread and the second external screw thread of drive rod, and one end of drive rod is equipped with first gear
514, first gear is connected by the first chain 515 with second gear 516, and second gear is fixed on the defeated of the second motor 517
On shaft, the second motor be fixed on crimping push plate on, the second motor control drive rod rotation, thus control the first pressure ring assembly and
Second pressure ring assembly is in the same direction or moves backward；
Radial on workbench to set there are two sliding rail 518, crimping push plate passes through the sliding block 519 being fixed thereon and is movably arranged
On the slide rail, the first compression joint mechanism and the second compression joint mechanism mirror settings, the crimping of the first compression joint mechanism and the second compression joint mechanism
Push plate passes through first cylinder respectively and pushes away 520 dynamic movements, be oppositely arranged two of the first compression joint mechanism and the second compression joint mechanism
Inner pressure ring mutually splices, and is used for clamping cables line；
Cutting mechanism is arranged between the first compression joint mechanism and the second compression joint mechanism, and cutting mechanism includes cutting mechanism support platform
521, saw blade 522 is rotatably equipped with by shaft in cutting mechanism support platform, shaft is equipped with third gear 523, third
Gear is connected by the second chain 524 with the 4th gear 525, and the 4th gear is connected with the output shaft of third motor 526, cuts
Cutting mill structure support platform is connected with the second cylinder 527, and cutting mechanism support platform is by the control lifting of the second cylinder, and saw blade is certainly
Cutting cable on down；
Clamp assemblies include clamp assemblies shell 31, and clamp assemblies shell is movably disposed on workbench, in clamp assemblies
It is axially arranged with gripping channel 32, is set on clamp assemblies shell there are four the first passage 33 being connected with gripping channel, it is adjacent
It is arranged in a mutually vertical manner between two first passages；
Rotatably be equipped with clamping push rod 34 in first passage, the one end for clamping push rod extend in gripping channel and with folder
Roller 35 to be held to be connected, the other end for clamping push rod extends to outside first passage and is connected with the second electric pushrod 36, and second
The output end of electric pushrod is rotatably fixed on clamping push rod, and the second electric pushrod is fixed on clamping by first support 37
On assembly housing, niproll is for gripping the cable being located therein.
Further, the inner wall of inner pressure ring is equipped with multiple crimp rings 528.
Further, the cross sectional shape of crimp rings is trapezium structure.
Further, the first guide groove 11 is axially arranged on workbench, first that clamp assemblies housing bottom is arranged in is led
Be movably disposed in the first guide groove to block 12, the first lead screw 13 pass through be threadedly engaged pass through the first guide pad and can
Rotation is fixed in the first guide groove, and the output end of first motor 14 is connected with the first lead screw, first motor control first
Lead screw rotation is to make clamp assemblies move back and forth on the table along the first guide groove.
Further, the outer wall of push rolls is equipped with multiple push items 26, pushes being axially disposed within of being parallel to each other of item and pushes away
It send on roller.
The application method of this cutting apparatus is as follows:
(1) positioning operation: the cable cut to needs positions, and the first electric pushrod is in contraction state, two push
The distance between roller is greater than the diameter of cable, and the end of cable passes through push component, is fixed in clamp assemblies, clamping group
When part is fixed, the second electric pushrod pushes clamping push rod to rotate counterclockwise, and cable is fixed between four niprolls；
After the completion of fixations, clamp assemblies are controlled by first motor and is moved to and cuts position, by cut component to cable into
After row is cut, clamp assemblies are reset to feeding position, and the first electric pushrod pushes push rod to rotate counterclockwise, will by push rolls
The end of cable is pushed to clamp assemblies, that is, may be repeated clamping cutting operation
(2) cutting operation: cable is extended through from the limit channels of limit assembly to cutting at component, two the first cylinders
It pushes the first compression joint mechanism and the second compression joint mechanism is close to each other and spicing forming type, cable is clamped to and is oppositely arranged
In two inner pressure rings, the second motor control transmission shaft driven makes two inner pressure ring reverse movements, to will be located at the first pressure ring group
Cable between part and the second pressure ring assembly is tensed, after tension, by saw blade from bottom to top by cable wire cutting.
In conclusion this cutting apparatus carries out cutting process to cable during cable is cut, it ensure that and cut
Precision improves work efficiency.
Embodiment 1
A kind of preparation method of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS, which is characterized in that preparation side
Method is as follows:
(1) antioxidant is prepared；High-speed stirring is added with the weight ratio of 4 ︰, 1 ︰ 2 in 1010 ︰ antioxidant DLTP ︰ antioxidant 1076 of antioxidant
It mixes in machine, mixing temperature is 55~65 DEG C, and incorporation time is 1~3H, obtains antioxidant；
(2) fire retardant is prepared；High-speed mixer is added in the weight ratio that Tai Bai Fen ︰ tri- aoxidizes 1 ︰ 3 of Er Ti ︰ tetrabromobisphenol A=2 ︰
In, mixing temperature is 65 DEG C, and incorporation time 30min obtains fire retardant；
(3) inorganic filler is prepared, the ratio that the weight ratio of magnesium hydroxide, montmorillonite, zinc borate is 2: 3: 1 is added to high-speed stirring
It mixes in machine, mixing temperature is 45 DEG C, and incorporation time 2H obtains inorganic filler；
(4) compatilizer is prepared, the weight ratio of POE-g-MAH ︰ EVA-g-MAH=2:3 is added in high-speed mixer, mixing temperature
Degree is 75 DEG C, and incorporation time 1H obtains compatilizer；
(5) CABLE MATERIALS: 45 parts of linear low density polyethylene according to parts by weight is prepared；15 parts of monoalkoxytitanates；Ethylene-vinegar
14 parts of sour ethylene copolymer；3 parts of compatilizer；2 parts of antioxidant；1 part of fire retardant and 30 parts of inorganic filler；It is added to high-speed stirred
It is uniformly mixed it in machine, by mixture first through mixer mixing, smelting temperature is 140 DEG C, mixing time 1H, then through double
Screw mixing, melting temperature are 160 DEG C, mixing time 1H, and baking oven drying is fed the mixture into after mixing, and drying temperature is
220 DEG C, drying 7h makes mixture be solidified into bulk material, then bulk material is cut into the small of diameter about 1cm by guillotine
Block, most afterwards through single screw rod extruding pelletization, single screw rod feed zone, melt zone and die head temperature are followed successively by 120 DEG C, 130 DEG C, 155
DEG C, finished product after extrusion.
Embodiment 2
A kind of preparation method of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS, which is characterized in that preparation side
Method is as follows:
(1) antioxidant is prepared；High-speed stirring is added with the weight ratio of 4 ︰, 1 ︰ 2 in 1010 ︰ antioxidant DLTP ︰ antioxidant 1076 of antioxidant
It mixes in machine, mixing temperature is 65 DEG C, and incorporation time 3H obtains antioxidant；
(2) fire retardant is prepared；High-speed mixer is added in the weight ratio that Tai Bai Fen ︰ tri- aoxidizes 1 ︰ 3 of Er Ti ︰ tetrabromobisphenol A=2 ︰
In, mixing temperature is 75 DEG C, and incorporation time 65min obtains fire retardant；
(3) inorganic filler is prepared, the ratio that the weight ratio of magnesium hydroxide, montmorillonite, zinc borate is 2: 3: 1 is added to high-speed stirring
It mixes in machine, mixing temperature is 55 DEG C, and incorporation time 3H obtains inorganic filler；
(4) compatilizer is prepared, the weight ratio of POE-g-MAH ︰ EVA-g-MAH=2:3 is added in high-speed mixer, mixing temperature
Degree is 85 DEG C, and incorporation time 2H obtains compatilizer；
(5) CABLE MATERIALS: 60 parts of linear low density polyethylene according to parts by weight is prepared；23 parts of monoalkoxytitanates；Ethylene-vinegar
23 parts of sour ethylene copolymer；7 parts of compatilizer；4 parts of antioxidant；2 parts of fire retardant and 45 parts of inorganic filler；It is added to high-speed stirred
It is uniformly mixed it in machine, by mixture first through mixer mixing, smelting temperature is 185 DEG C, mixing time 3H, then through double
Screw mixing, melting temperature are 190 DEG C, mixing time 3H, and baking oven drying is fed the mixture into after mixing, and drying temperature is
260 DEG C, drying 10h makes mixture be solidified into bulk material, then bulk material is cut into the small of diameter about 2cm by guillotine
Block, most afterwards through single screw rod extruding pelletization, single screw rod feed zone, melt zone and die head temperature are followed successively by 140 DEG C, 160 DEG C, 185
DEG C, finished product after extrusion.
Embodiment 3
A kind of preparation method of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS, which is characterized in that preparation side
Method is as follows:
(1) antioxidant is prepared；High-speed stirring is added with the weight ratio of 4 ︰, 1 ︰ 2 in 1010 ︰ antioxidant DLTP ︰ antioxidant 1076 of antioxidant
It mixes in machine, mixing temperature is 59 DEG C, and incorporation time 2H obtains antioxidant；
(2) fire retardant is prepared；High-speed mixer is added in the weight ratio that Tai Bai Fen ︰ tri- aoxidizes 1 ︰ 3 of Er Ti ︰ tetrabromobisphenol A=2 ︰
In, mixing temperature is 69 DEG C, and incorporation time 45min obtains fire retardant；
(3) inorganic filler is prepared, the ratio that the weight ratio of magnesium hydroxide, montmorillonite, zinc borate is 2: 3: 1 is added to high-speed stirring
It mixes in machine, mixing temperature is 48 DEG C, and incorporation time 2.5H obtains inorganic filler；
(4) compatilizer is prepared, the weight ratio of POE-g-MAH ︰ EVA-g-MAH=2:3 is added in high-speed mixer, mixing temperature
Degree is 82 DEG C, and incorporation time 1.5H obtains compatilizer；
(5) CABLE MATERIALS: 54 parts of linear low density polyethylene according to parts by weight is prepared；18 parts of monoalkoxytitanates；Ethylene-vinegar
19 parts of sour ethylene copolymer；5 parts of compatilizer；4 parts of antioxidant；1 part of fire retardant and 37 parts of inorganic filler；It is added to high-speed stirred
It is uniformly mixed it in machine, by mixture first through mixer mixing, smelting temperature is 165 DEG C, mixing time 2H, then through double
Screw mixing, melting temperature are 180 DEG C, mixing time 2H, and baking oven drying is fed the mixture into after mixing, and drying temperature is
250 DEG C, drying 9h makes mixture be solidified into bulk material, then bulk material is cut into the small of diameter about 1cm by guillotine
Block, most afterwards through single screw rod extruding pelletization, single screw rod feed zone, melt zone and die head temperature are followed successively by 130 DEG C, 140 DEG C, 175
DEG C, finished product after extrusion.
Using special compatible agent prescription, the mechanical thermoplastic of CABLE MATERIALS can be increased substantially.High intensity of the invention
High elongation rate thermoplastic low-smoke halide-free CABLE MATERIALS is being protected by using special composite flame-retardant agent and composite antioxidant formula
It holds outside its good mechanical performance, anti-flammability is greatly improved.
1 this product performance indicator of table
| Pilot project | Unit | 1 product of embodiment | 2 product of embodiment | 3 product of embodiment | Commercially available irradiation halogen-free cable material | Test method |
| Tensile strength | Mpa | 12.6 | 12.7 | 13.8 | 11.8 | IEC 60811 |
| Elongation at break | % | 313 | 257 | 332 | 180 | IEC 60811 |
| Dielectric strength | KV/M | 25 | 25 | 25 | 25 | IEC 60250 |
| Smoke density | There is flame method | 99 | 96 | 82 | 150 | ASTM E-662 |
| Flameless procedure | 180 | 178 | 182 | 225 | ASTM E-662 | |
| PH value | 6.4 | 6.2 | 6.4 | 6 | IEC 60754 | |
| Conductivity | μ s/mm | 1.7 | 1.8 | 1.75 | 0.075 | IEC 60754 |
| Wear-resisting rate (1.5mm2 cable) | It is secondary | 520 | 530 | 550 | 300 | ISO 6722 |
| Brittle temperature | ℃ | -25 | -25 | -25 | -25 | GB 5470 |
Claims (7)
1. a kind of preparation method of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS, which is characterized in that preparation
Method is as follows:
(1) antioxidant is prepared；High-speed stirring is added with the weight ratio of 4 ︰, 1 ︰ 2 in 1010 ︰ antioxidant DLTP ︰ antioxidant 1076 of antioxidant
It mixes in machine, mixing temperature is 55~65 DEG C, and incorporation time is 1~3H, obtains antioxidant；
(2) fire retardant is prepared；High-speed mixer is added in the weight ratio that Tai Bai Fen ︰ tri- aoxidizes 1 ︰ 3 of Er Ti ︰ tetrabromobisphenol A=2 ︰
In, mixing temperature is 65~75 DEG C, and incorporation time is 30~65min, obtains fire retardant；
(3) inorganic filler is prepared, the ratio that the weight ratio of magnesium hydroxide, montmorillonite, zinc borate is 2: 3: 1 is added to high-speed stirring
It mixes in machine, mixing temperature is 45~55 DEG C, and incorporation time is 2~3H, obtains inorganic filler；
(4) compatilizer is prepared, the weight ratio of POE-g-MAH ︰ EVA-g-MAH=2:3 is added in high-speed mixer, mixing temperature
Degree is 75~85 DEG C, and incorporation time is 1~2H, obtains compatilizer；
(5) CABLE MATERIALS: 45~60 parts of linear low density polyethylene according to parts by weight is prepared；Monoalkoxytitanates 15~23
Part；14~23 parts of ethylene-vinyl acetate copolymer；3~7 parts of compatilizer；2~4 parts of antioxidant；1~2 part of fire retardant and inorganic
30~45 parts of filler；Being added in high-speed mixer is uniformly mixed it, and by mixture first through mixer mixing, smelting temperature is
140~185 DEG C, mixing time is 1~3H, and then through twin-screw mixer, melting temperature is 160~190 DEG C, mixing time 1
~3H feeds the mixture into baking oven drying after mixing, drying temperature is 220~260 DEG C, and 7~10h of drying is solidified into mixture
Bulk material, then bulk material is cut into the cobbing of diameter about 1~2cm by guillotine, most made afterwards through single screw rod extrusion
Grain, single screw extrusion machine extruding pelletization, single screw rod feed zone, melt zone and die head temperature be followed successively by 120~140 DEG C, 130~
160 DEG C, 155~185 DEG C, finished product after extrusion.
2. a kind of preparation side of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS as described in claim 1
Method, which is characterized in that the linear low density polyethylene melt index is 4~6g/10min.
3. a kind of preparation side of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS as described in claim 1
Method, which is characterized in that the compatilizer is POE-g-MAH (maleic anhydride functional groups grafted ethene-octene copolymer) and EVA-
The mixture of g-MAH (maleic anhydride functional groups grafted ethene-acetate ethylene copolymer), mixed weight ratio are POE-g-MAH ︰
EVA-g-MAH=2:3。
4. a kind of preparation side of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS as described in claim 1
Method, which is characterized in that the weight percent content of vinyl acetate is 35%~38% in the ethylene-vinyl acetate copolymer,
Melt index is 6~8g/10min.
5. a kind of preparation side of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS as described in claim 1
Method, which is characterized in that the antioxidant is the mixture of antioxidant 1010, anti-oxidant DLTP, antioxidant 1076；Mixed weight ratio
Example are as follows: 1010 ︰ antioxidant DLTP ︰ antioxidant 1076 of antioxidant=4 ︰, 1 ︰ 2.
6. a kind of preparation side of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS as described in claim 1
Method, which is characterized in that the fire retardant is the mixture of titanium dioxide, antimony oxide and tetrabromobisphenol A；Mixed weight ratio
Are as follows: Tai Bai Fen ︰ tri- aoxidizes 1 ︰ 3 of Er Ti ︰ tetrabromobisphenol A=2 ︰.
7. a kind of preparation side of green type high strength high extensibility thermoplastic low-smoke halide-free CABLE MATERIALS as described in claim 1
Method, which is characterized in that the diameter D50 of the inorganic filler powder granule is 12~20 μm, and D represents the diameter of powder granule, D50
Indicate accumulative 50% point of diameter；The inorganic filler operation is the mixture of magnesium hydroxide, montmorillonite, zinc borate；The hydrogen
Magnesia, montmorillonite, zinc borate weight ratio be 2: 3: 1.
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| CN101597395A (en) * | 2009-06-24 | 2009-12-09 | 上海至正道化高分子材料有限公司 | A kind of fireproofing cable material without halide and preparation method thereof |
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| CN101597395A (en) * | 2009-06-24 | 2009-12-09 | 上海至正道化高分子材料有限公司 | A kind of fireproofing cable material without halide and preparation method thereof |
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