CN108003451A - A kind of preparation method of the environmental protection flame retardant shell of computer - Google Patents
A kind of preparation method of the environmental protection flame retardant shell of computer Download PDFInfo
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- CN108003451A CN108003451A CN201711464961.8A CN201711464961A CN108003451A CN 108003451 A CN108003451 A CN 108003451A CN 201711464961 A CN201711464961 A CN 201711464961A CN 108003451 A CN108003451 A CN 108003451A
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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
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- 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
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
-
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Fireproofing Substances (AREA)
Abstract
Environmental protection flame retardant shell the invention discloses a kind of computer and preparation method thereof, its raw material of the shell is as follows by weight：10 15 parts of carbon fiber, 20 40 parts of EVA resin, 6 10 parts of aluminium hydroxide, 6 10 parts of magnesium hydroxide, 35 parts of nylon particles, 13 parts of zinc hydroxyl stannate, 35 parts of ammonium phosphate, 6 10 parts of montmorillonite, 12 parts of plasticizer, the present invention strictly controls the environmental protection flame retardant shell of the computer, pass through the proportion and processing parameter of stringent control computer shell each component, the nylon particles and ammonium phosphate granules added in the feed, reduce heat release rate, so that initial burning time is extended, by adding zinc hydroxyl stannate in case material, the fire-retardant and smoke suppressing of material can be obviously improved, and the addition of montmorillonite material is so that the tensile strength and fire resistance of material arrive lifting, it is adapted to be widely popularized.
Description
Technical field
The present invention relates to the preparation side of computer hardware technology field, the specially a kind of environmental protection flame retardant shell of computer
Method.
Background technology
Computer hardware refers in computer system by the various physical units of composition such as electronics, mechanical and photoelectric cell
General name.These physical units form an organic whole by the requirement of system structure and provide material base for computer software operation
Plinth.In short, the function of computer hardware is input and storage program and data, and executive program data mart modeling into can be with
The form utilized.In the case where user needs, the output of data is carried out in a manner of user requires.It is micro- from the point of view of from the appearance
Machine is made of mainframe box and external equipment.In mainframe box mainly include CPU, memory, mainboard, hard disk drive, CD drive,
Various expansion cards, connecting line, power supply etc.；External equipment includes mouse, keyboard etc..
Counter body is fire-retardant as the common hardware installation safeguard structure of computer, traditional counter body structure
The effect is relatively poor, and easily produces flue dust in combustion, and tensile strength is not suitable for promoting the use of also than relatively low.
The content of the invention
It is an object of the invention to provide a kind of preparation method of the environmental protection flame retardant shell of computer, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the present invention provides following technical solution：A kind of environmental protection flame retardant shell of computer, its raw material
It is as follows by weight：10-15 parts of carbon fiber, 20-40 parts of EVA resin, 6-10 parts of aluminium hydroxide, 6-10 parts of magnesium hydroxide, nylon
3-5 parts of particle, 1-3 parts of zinc hydroxyl stannate, 3-5 parts of ammonium phosphate, 6-10 parts of montmorillonite, 1-2 parts of plasticizer.
Preferably, the EVA resin is ethylene-vinyl acetate copolymer, and wherein vinyl acetate content is in 5-40%.
Preferably, the montmorillonite be bentonite ore essential mineral component, wherein Al2O3Content be 16.54%, MgO
Content be 4.65%, SiO2 content be 50.95%, for white micro-strip light gray earthy spherolite.
Preferably, the plasticizer is di-n-octyl phthalate, diisononyl phthalate, phthalic acid two
At least one of isobutyl ester.
A kind of preparation method of the environmental protection flame retardant shell of computer, includes the following steps：
S1：By carbon fiber, EVA resin, aluminium hydroxide, magnesium hydroxide, nylon particles, zinc hydroxyl stannate, ammonium phosphate, montmorillonite and
Plasticizer is proportionally weighed spare；
S2：Carbon fiber in step S1, EVA resin, montmorillonite and nylon particles are respectively put into grinder and are ground, are controlled
The size that system grinds particle is spare in 0.2-0.5mm, acquisition grinding powder；
S3：Poured into powder particle is obtained in S2 in blender, and ammonium phosphate and plasticizer added in blender and mixed,
Control mixing temperature that it is spare to obtain mixed material at 70-100 DEG C, mixing time 20-30min；
S4：Mixed material in surplus material and S3 in S1 is poured into blender again and is mixed, control mixing
It is spare to obtain mixed material at 90-120 DEG C, mixing time 30-40min for temperature；
S5：By the mixed material in S4 pour into kneading machine by material batch mixing be in molten condition under extrude, kneading machine internal temperature
Control is at 150-200 DEG C；
S6：Fused materials in S5 are poured into injection molding in mould, the temperature control of injection mold is at 160-210 DEG C, injection
Time 1-2min, cooling time 10-15min；
S7：The computer housing blank of acquisition is put into resistance furnace, is heated to 300-500 DEG C, keeps the temperature 40-60min, Ran Houleng
But room temperature is arrived to be made annealing treatment；
S8：The computer housing blank obtained in S7 is put into sander and slides corner rounding；
S9：The casing completed that will polish is clean by surface clean using chemical substance, forms one layer of stable phosphate protective layer；
S10：The casing obtained in S9 grinds surface coarse, spray painting or electrostatic powder coating is sprayed and is attached to casing surface, obtain
Obtain the counter body of environmental protection flame retardant；
S11：The environmental protection flame retardant counter body of acquisition is subjected to package storage.
Preferably, the blender used in the step S3 and step S4 is turbine agitator, and rotating speed is in 10-500r/
min。
Preferably, the kneading machine used in the step S5 turns using two-rotor continuous mixer, kneading machine motor
Speed is in 260-750r/min.
Preferably, after annealing in the step S7, casing blank is sent into aging furnace and is heated to 200-300 DEG C, processing
5-7h, after slow cooling to room temperature, carries out subzero treatment, cryogenic temperature is -120 to -180 DEG C, and processing time is being sent into deep cooling box
30-40min, then recovers blank to room temperature.
Preferably, in order to enable each component of environmental protection flame retardant counter body to be fixedly combined together, meter is ensured
The intensity of calculation machine shell, the size D for grinding particle（Largest contours diameter）In 0.25-0.45mm, described is mixed
Temperature P is closed at 95-115 DEG C, mixing time T is 33-47min.The mixing time T and described grind the big of particle
Meet following relation between small D, the mixing temperature P：
T=t+（P/αD）
Wherein, t is batch mixing basic time, and unit is minute, its value is 30min；α is adjustment factor, value range 9-10.
Numerical computations are only carried out in above formula, are calculated without unit.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）The present invention is added in the feed by the proportion and processing parameter of stringent control computer shell each component
Nylon particles and ammonium phosphate granules, reduce heat release rate so that initial burning time is extended.
（2）The present invention can be obviously improved the fire-retardant of material and suppression cigarette by adding zinc hydroxyl stannate in case material
Performance, and the addition of montmorillonite material causes the tensile strength of material and fire resistance to arrive lifting, is adapted to be widely popularized.
（3）The present invention is by setting the mixing time T and size D for grinding particle, described mixed
The relation between temperature P is closed, each component of environmental protection flame retardant counter body is fixedly combined together, preferably protects
Demonstrate,prove the intensity of counter body.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Embodiment 1
A kind of environmental protection flame retardant shell of computer, its raw material are as follows by weight：10 parts of carbon fiber, 20 parts of EVA resin, hydroxide
6 parts of aluminium, 6 parts of magnesium hydroxide, 3 parts of nylon particles, 1 part of zinc hydroxyl stannate, 3 parts of ammonium phosphate, 6 parts of montmorillonite, 1 part of plasticizer, institute
It is ethylene-vinyl acetate copolymer to state EVA resin, and for wherein vinyl acetate content 5%, the montmorillonite is the master of bentonite ore
Want mineral constituent, wherein Al2O3Content be 16.54%, MgO content be 4.65%, SiO2 content be 50.95%, for white
Micro-strip light gray earthy spherolite, the plasticizer is di-n-octyl phthalate, diisononyl phthalate, O-phthalic
At least one of sour diisobutyl ester.
A kind of preparation method of the environmental protection flame retardant shell of computer, includes the following steps：
S1：By carbon fiber, EVA resin, aluminium hydroxide, magnesium hydroxide, nylon particles, zinc hydroxyl stannate, ammonium phosphate, montmorillonite and
Plasticizer is proportionally weighed spare；
S2：Carbon fiber in step S1, EVA resin, montmorillonite and nylon particles are respectively put into grinder and are ground, are controlled
The size that system grinds particle is spare in 0.2mm, acquisition grinding powder；
S3：Poured into powder particle is obtained in S2 in blender, and ammonium phosphate and plasticizer added in blender and mixed,
Control mixing temperature that it is spare to obtain mixed material at 70 DEG C, mixing time 20min；
S4：Mixed material in surplus material and S3 in S1 is poured into blender again and is mixed, control mixing
It is spare to obtain mixed material at 90 DEG C, mixing time 30min for temperature；
S5：By the mixed material in S4 pour into kneading machine by material batch mixing be in molten condition under extrude, kneading machine internal temperature
Control is at 150 DEG C；
S6：Fused materials in S5 are poured into injection molding in mould, the temperature control of injection mold is at 160 DEG C, injection time
1min, cooling time 10min；
S7：The computer housing blank of acquisition is put into resistance furnace, is heated to 300 DEG C, 40min is kept the temperature, is then cooled to room
Temperature is made annealing treatment；
S8：The computer housing blank obtained in S7 is put into sander and slides corner rounding；
S9：The casing completed that will polish is clean by surface clean using chemical substance, forms one layer of stable phosphate protective layer；
S10：The casing obtained in S9 grinds surface coarse, spray painting or electrostatic powder coating is sprayed and is attached to casing surface, obtain
Obtain the counter body of environmental protection flame retardant；
S11：The environmental protection flame retardant counter body of acquisition is subjected to package storage.
The blender used in the step S3 and step S4 is turbine agitator, and rotating speed is in 10 r/min, the step
The kneading machine used in rapid S5 is using two-rotor continuous mixer, and kneading machine motor speed is in 260r/min, the step
After annealing in S7, casing blank is sent into aging furnace and is heated to 200 DEG C, handle 5h, after slow cooling to room temperature, be sent into deep cooling box
Subzero treatment is carried out, cryogenic temperature is -120 DEG C, and processing time 30min, then recovers blank to room temperature.
Embodiment 2
A kind of environmental protection flame retardant shell of computer, its raw material are as follows by weight：12.5 parts of carbon fiber, 30 parts of EVA resin, hydrogen-oxygen
Change 8 parts of aluminium, 8 parts of magnesium hydroxide, 4 parts of nylon particles, 2 parts of zinc hydroxyl stannate, 4 parts of ammonium phosphate, 8 parts of montmorillonite, plasticizer 1.5
Part, the EVA resin is ethylene-vinyl acetate copolymer, and for wherein vinyl acetate content 22%, the montmorillonite is bentonite
The essential mineral component of ore deposit, wherein Al2O3Content be 16.54%, MgO content be 4.65%, SiO2 content be 50.95%,
For white micro-strip light gray earthy spherolite, the plasticizer is di-n-octyl phthalate, diisononyl phthalate, neighbour
At least one of phthalic acid diisobutyl ester.
A kind of preparation method of the environmental protection flame retardant shell of computer, includes the following steps：
S1：By carbon fiber, EVA resin, aluminium hydroxide, magnesium hydroxide, nylon particles, zinc hydroxyl stannate, ammonium phosphate, montmorillonite and
Proportionally load-bearing is spare for plasticizer；
S2：Carbon fiber in step S1, EVA resin, montmorillonite and nylon particles are respectively put into grinder and are ground, are controlled
The size that system grinds particle is spare in 0.3mm, acquisition grinding powder；
S3：Poured into powder particle is obtained in S2 in blender, and ammonium phosphate and plasticizer added in blender and mixed,
Control mixing temperature that it is spare to obtain mixed material at 85 DEG C, mixing time 25min；
S4：Mixed material in surplus material and S3 in S1 is poured into blender again and is mixed, control mixing
It is spare to obtain mixed material at 105 DEG C, mixing time 35min for temperature；
S5：By the mixed material in S4 pour into kneading machine by material batch mixing be in molten condition under extrude, kneading machine internal temperature
Control is at 175 DEG C；
S6：Fused materials in S5 are poured into injection molding in mould, the temperature control of injection mold is at 185 DEG C, injection time
1.5min, cooling time 12.5min；
S7：The computer housing blank of acquisition is put into resistance furnace, is heated to 400 DEG C, 50min is kept the temperature, is then cooled to room
Temperature is made annealing treatment；
S8：The computer housing blank obtained in S7 is put into sander and slides corner rounding；
S9：The casing completed that will polish is clean by surface clean using chemical substance, forms one layer of stable phosphate protective layer；
S10：The casing obtained in S9 grinds surface coarse, spray painting or electrostatic powder coating is sprayed and is attached to casing surface, obtain
Obtain the counter body of environmental protection flame retardant；
S11：The environmental protection flame retardant counter body of acquisition is subjected to package storage.
The blender used in the step S3 and step S4 is turbine agitator, and rotating speed is in 245r/min, the step
The kneading machine used in rapid S5 is using two-rotor continuous mixer, and kneading machine motor speed is in 490r/min, the step
After annealing in S7, casing blank is sent into aging furnace and is heated to 250 DEG C, handle 6h, after slow cooling to room temperature, be sent into deep cooling box
Subzero treatment is carried out, cryogenic temperature is -150 DEG C, and processing time 35min, then recovers blank to room temperature.
Embodiment 3
A kind of environmental protection flame retardant shell of computer, its raw material are as follows by weight：15 parts of carbon fiber, 40 parts of EVA resin, hydroxide
10 parts of aluminium, 10 parts of magnesium hydroxide, 5 parts of nylon particles, 3 parts of zinc hydroxyl stannate, 5 parts of ammonium phosphate, 10 parts of montmorillonite, 2 parts of plasticizer,
The EVA resin is ethylene-vinyl acetate copolymer, and for wherein vinyl acetate content 40%, the montmorillonite is bentonite ore
Essential mineral component, wherein Al2O3Content be 16.54%, MgO content be 4.65%, SiO2 content be 50.95%, be white
Color micro-strip light gray earthy spherolite, the plasticizer is di-n-octyl phthalate, diisononyl phthalate, adjacent benzene two
At least one of diisobutyl formate.
A kind of preparation method of the environmental protection flame retardant shell of computer, includes the following steps：
S1：By carbon fiber, EVA resin, aluminium hydroxide, magnesium hydroxide, nylon particles, zinc hydroxyl stannate, ammonium phosphate, montmorillonite and
Proportionally load-bearing is spare for plasticizer；
S2：Carbon fiber in step S1, EVA resin, montmorillonite and nylon particles are respectively put into grinder and are ground, are controlled
The size that system grinds particle is spare in 0.5mm, acquisition grinding powder；
S3：Poured into powder particle is obtained in S2 in blender, and ammonium phosphate and plasticizer added in blender and mixed,
Control mixing temperature that it is spare to obtain mixed material at 100 DEG C, mixing time 30min；
S4：Mixed material in surplus material and S3 in S1 is poured into blender again and is mixed, control mixing
It is spare to obtain mixed material at 120 DEG C, mixing time 40min for temperature；
S5：By the mixed material in S4 pour into kneading machine by material batch mixing be in molten condition under extrude, kneading machine internal temperature
Control is at 200 DEG C；
S6：Fused materials in S5 are poured into injection molding in mould, the temperature control of injection mold is at 210 DEG C, injection time
2min, cooling time 15min；
S7：The computer housing blank of acquisition is put into resistance furnace, is heated to 500 DEG C, 40-60min is kept the temperature, is then cooled to
Room temperature is made annealing treatment；
S8：The computer housing blank obtained in S7 is put into sander and slides corner rounding；
S9：The casing completed that will polish is clean by surface clean using chemical substance, forms one layer of stable phosphate protective layer；
S10：The casing obtained in S9 grinds surface coarse, spray painting or electrostatic powder coating is sprayed and is attached to casing surface, obtain
Obtain the counter body of environmental protection flame retardant；
S11：The environmental protection flame retardant counter body of acquisition is subjected to package storage.
The blender used in the step S3 and step S4 is turbine agitator, and rotating speed is in 500r/min, the step
The kneading machine used in rapid S5 is using two-rotor continuous mixer, and kneading machine motor speed is in 750r/min, the step
After annealing in S7, casing blank is sent into aging furnace and is heated to 300 DEG C, handle 7h, after slow cooling to room temperature, be sent into deep cooling box
Subzero treatment is carried out, cryogenic temperature is -180 DEG C, and processing time 40min, then recovers blank to room temperature.
Embodiment 4
A kind of environmental protection flame retardant shell of computer, its raw material are as follows by weight：10 parts of carbon fiber, 20 parts of EVA resin, hydroxide
6 parts of aluminium, 6 parts of magnesium hydroxide, 3 parts of nylon particles, 1 part of zinc hydroxyl stannate, 3 parts of ammonium phosphate, 6 parts of montmorillonite, 1 part of plasticizer, institute
It is ethylene-vinyl acetate copolymer to state EVA resin, and for wherein vinyl acetate content 5%, the montmorillonite is the master of bentonite ore
Want mineral constituent, wherein Al2O3Content be 16.54%, MgO content be 4.65%, SiO2 content be 50.95%, for white
Micro-strip light gray earthy spherolite, the plasticizer is di-n-octyl phthalate, diisononyl phthalate, O-phthalic
At least one of sour diisobutyl ester.
A kind of preparation method of the environmental protection flame retardant shell of computer, includes the following steps：
S1：By carbon fiber, EVA resin, aluminium hydroxide, magnesium hydroxide, nylon particles, zinc hydroxyl stannate, ammonium phosphate, montmorillonite and
Plasticizer is proportionally weighed spare；
S2：Carbon fiber in step S1, EVA resin, montmorillonite and nylon particles are respectively put into grinder and are ground, are controlled
The size that system grinds particle is spare in 0.2mm, acquisition grinding powder；
S3：Poured into powder particle is obtained in S2 in blender, and ammonium phosphate and plasticizer added in blender and mixed,
Control mixing temperature that it is spare to obtain mixed material at 70 DEG C, mixing time 20min；
S4：Mixed material in surplus material and S3 in S1 is poured into blender again and is mixed, control mixing
It is spare to obtain mixed material at 90 DEG C, mixing time 30min for temperature；
S5：By the mixed material in S4 pour into kneading machine by material batch mixing be in molten condition under extrude, kneading machine internal temperature
Control is at 150 DEG C；
S6：Fused materials in S5 are poured into injection molding in mould, the temperature control of injection mold is at 160 DEG C, injection time
1min, cooling time 10min；
S7：The computer housing blank of acquisition is put into resistance furnace, is heated to 300 DEG C, 40min is kept the temperature, is then cooled to room
Temperature is made annealing treatment；
S8：The computer housing blank obtained in S7 is put into sander and slides corner rounding；
S9：The casing completed that will polish is clean by surface clean using chemical substance, forms one layer of stable phosphate protective layer；
S10：The casing obtained in S9 grinds surface coarse, spray painting or electrostatic powder coating is sprayed and is attached to casing surface, obtain
Obtain the counter body of environmental protection flame retardant；
S11：The environmental protection flame retardant counter body of acquisition is subjected to package storage.
The blender used in the step S3 and step S4 is turbine agitator, and rotating speed is in 10 r/min, the step
The kneading machine used in rapid S5 is using two-rotor continuous mixer, and kneading machine motor speed is in 260r/min, the step
After annealing in S7, casing blank is sent into aging furnace and is heated to 200 DEG C, handle 5h, after slow cooling to room temperature, be sent into deep cooling box
Subzero treatment is carried out, cryogenic temperature is -120 DEG C, and processing time 30min, then recovers blank to room temperature.
In order to enable each component of environmental protection flame retardant counter body to be fixedly combined together, ensure counter body
Intensity, the size D for grinding particle（Largest contours diameter）Exist in 0.25-0.45mm, the mixing temperature P
95-115 DEG C, mixing time T is 33-47min.It is the mixing time T and size D for grinding particle, described
Mixing temperature P between meet following relation：
T=t+（P/αD）
Wherein, t is batch mixing basic time, and unit is minute, its value is 30min；α is adjustment factor, value range 9-10.
Numerical computations are only carried out in above formula, are calculated without unit.
The present invention strictly controls the environmental protection flame retardant shell of the computer, passes through the ratio of stringent control computer shell each component
Weight and processing parameter, the nylon particles added in the feed and ammonium phosphate granules, reduce heat release rate so that most
Being extended for first burning time, by adding zinc hydroxyl stannate in case material, can be obviously improved the fire-retardant of material
And smoke suppressing, and the addition of montmorillonite material causes the tensile strength of material and fire resistance to arrive lifting, is adapted to extensive
Promote.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
- A kind of 1. environmental protection flame retardant shell of computer, it is characterised in that：Its raw material is as follows by weight：10-15 parts of carbon fiber, 20-40 parts of EVA resin, 6-10 parts of aluminium hydroxide, 6-10 parts of magnesium hydroxide, 3-5 parts of nylon particles, 1-3 parts of zinc hydroxyl stannate, phosphorus Sour ammonium 3-5 parts, 6-10 parts of montmorillonite, 1-2 parts of plasticizer.
- A kind of 2. environmental protection flame retardant shell of computer according to claim 1, it is characterised in that：The EVA resin is second Alkene-acetate ethylene copolymer, wherein vinyl acetate content is in 5-40%.
- A kind of 3. environmental protection flame retardant shell of computer according to claim 1, it is characterised in that：The montmorillonite is swelling The essential mineral component of Tu Kuang, wherein Al2O3Content be 16.54%, MgO content be 4.65%, SiO2 content be 50.95%, for white micro-strip light gray earthy spherolite.
- A kind of 4. environmental protection flame retardant shell of computer according to claim 1, it is characterised in that：The plasticizer is adjacent benzene At least one of dioctyl phthalate di-n-octyl, diisononyl phthalate, diisobutyl phthalate.
- 5. a kind of preparation method of environmental protection flame retardant shell according to claim 1-4 any one of them computers, its feature exist In：A preparation method includes the following steps：S1：By carbon fiber, EVA resin, aluminium hydroxide, magnesium hydroxide, nylon particles, zinc hydroxyl stannate, ammonium phosphate, montmorillonite and Plasticizer is proportionally weighed spare；S2：Carbon fiber in step S1, EVA resin, montmorillonite and nylon particles are respectively put into grinder and are ground, are controlled The size that system grinds particle is spare in 0.2-0.5mm, acquisition grinding powder；S3：Poured into powder particle is obtained in S2 in blender, and ammonium phosphate and plasticizer added in blender and mixed, Control mixing temperature that it is spare to obtain mixed material at 70-100 DEG C, mixing time 20-30min；S4：Mixed material in surplus material and S3 in S1 is poured into blender again and is mixed, control mixing It is spare to obtain mixed material at 90-120 DEG C, mixing time 30-40min for temperature；S5：By the mixed material in S4 pour into kneading machine by material batch mixing be in molten condition under extrude, kneading machine internal temperature Control is at 150-200 DEG C；S6：Fused materials in S5 are poured into injection molding in mould, the temperature control of injection mold is at 160-210 DEG C, injection Time 1-2min, cooling time 10-15min；S7：The computer housing blank of acquisition is put into resistance furnace, is heated to 300-500 DEG C, keeps the temperature 40-60min, Ran Houleng But room temperature is arrived to be made annealing treatment；S8：The computer housing blank obtained in S7 is put into sander and slides corner rounding；S9：The casing completed that will polish is clean by surface clean using chemical solution, forms one layer of stable phosphate protective layer；S10：The casing obtained in S9 grinds surface coarse, spray painting or electrostatic powder coating is sprayed and is attached to casing surface, obtain Obtain the counter body of environmental protection flame retardant.
- A kind of 6. preparation method of the environmental protection flame retardant shell of computer according to claim 5, it is characterised in that：The step The blender used in rapid S3 and step S4 is turbine agitator, and rotating speed is in 10-500r/min.
- A kind of 7. preparation method of the environmental protection flame retardant shell of computer according to claim 5 or 6, it is characterised in that：Institute The kneading machine used in step S5 is stated using two-rotor continuous mixer, kneading machine motor speed is in 260-750r/min.
- 8. according to a kind of preparation method of the environmental protection flame retardant shell of computer of claim 5-7 any one of them, its feature exists In：After annealing in the step S7, casing blank is sent into aging furnace and is heated to 200-300 DEG C, handle 5-7h, slow cooling to room Wen Hou, carries out subzero treatment, cryogenic temperature is -120 to -180 DEG C, processing time 30-40min, then being sent into deep cooling box Blank is recovered to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464961.8A CN108003451A (en) | 2017-12-28 | 2017-12-28 | A kind of preparation method of the environmental protection flame retardant shell of computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464961.8A CN108003451A (en) | 2017-12-28 | 2017-12-28 | A kind of preparation method of the environmental protection flame retardant shell of computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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| CN109280259A (en) * | 2018-09-14 | 2019-01-29 | 河南科技大学 | A kind of distribution regulation is added with the EVA/PA6 flame retardant composite material and preparation method of OMMT |
| CN109370024A (en) * | 2018-09-14 | 2019-02-22 | 河南科技大学 | A kind of toughened halogen-free flame-retardant EVA/PA6 composite material and preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280259A (en) * | 2018-09-14 | 2019-01-29 | 河南科技大学 | A kind of distribution regulation is added with the EVA/PA6 flame retardant composite material and preparation method of OMMT |
| CN109370024A (en) * | 2018-09-14 | 2019-02-22 | 河南科技大学 | A kind of toughened halogen-free flame-retardant EVA/PA6 composite material and preparation method |
| CN109280259B (en) * | 2018-09-14 | 2021-05-11 | 河南科技大学 | EVA/PA6 flame-retardant composite material added with OMMT in distribution regulation and control mode and preparation method |
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