CN107955201A - A kind of LEDbulb lamp shell - Google Patents
A kind of LEDbulb lamp shell Download PDFInfo
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- CN107955201A CN107955201A CN201711240266.3A CN201711240266A CN107955201A CN 107955201 A CN107955201 A CN 107955201A CN 201711240266 A CN201711240266 A CN 201711240266A CN 107955201 A CN107955201 A CN 107955201A
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- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
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- C08G12/42—Chemically modified polycondensates by etherifying
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09D161/32—Modified amine-aldehyde condensates
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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- C08J2461/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
- C08K2003/3027—Sulfides of cadmium
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The present invention relates to a kind of shell, and in particular to a kind of LEDbulb lamp shell, belongs to sheathing material field.LEDbulb lamp shell of the present invention is made of PA6/PET composite base materials, and the PA6/PET composite base materials surface is coated with flame retardant coating, and the flame retardant coating specifically includes the component of following parts by weight：Modified urea-formaldehyde resin：90 100 parts, ammonium polyphosphate：15 20 parts, pentaerythrite：12 15 parts, melamine：5 10 parts, calcium carbonate：25 parts, organobentonite：25 parts, Nano cadmium sulphide：25 parts.The present invention is modified Lauxite processing using ethanol and sec-butyl alcohol, can also ensure the mechanical performance of obtained LEDbulb lamp shell and excellent heat endurance as matrix using PA6/PET composite materials.
Description
Invention field
The present invention relates to a kind of shell, and in particular to a kind of LEDbulb lamp shell, belongs to sheathing material field.
Background technology
In today of energy scarcity, we can usually run into power failure or the electricity charge of great number, to we life and passing through
Many inconveniences are brought in battalion, especially strong influence and embarrassment are all brought in factory and other commercial lightings, to environment
Pollute.And LEDbulb lamp can solve the problems, such as this, LEDbulb lamp has the advantages that energy saving beauty is convenient, entirely
Portion, which shines, selects LED high brightness lamp bead all very good in energy saving and brightness, and cost performance is very high, this luminaire body power point
For 30-40W.But as luminous class product, inevitably need to consider its security performance.
The content of the invention
The present invention is in view of the above-mentioned problems existing in the prior art, it is proposed that outside a kind of LEDbulb lamp of excellent flame retardancy
Shell.
The purpose of the present invention is realized by following technical solution：A kind of LEDbulb lamp shell, outside the LEDbulb lamp
Shell is made of PA6/PET composite base materials, and the PA6/PET composite base materials surface is coated with flame retardant coating, the flame retardant coating tool
Body includes the component of following parts by weight：Modified urea-formaldehyde resin：90-100 parts, ammonium polyphosphate：15-20 parts, pentaerythrite：12-
15 parts, melamine：5-10 parts, calcium carbonate：2-5 parts, organobentonite：2-5 parts, Nano cadmium sulphide：2-5 parts.
The present invention is coated on aluminium plastic composite material using above-mentioned flame retardant coating, can make obtained LEDbulb lamp shell
With more fire resistance, so as to ensure the performance of obtained LEDbulb lamp.
In a kind of above-mentioned LEDbulb lamp shell, modified urea-formaldehyde resin is used in flame retardant coating as base-material, the modified urea
Urea formaldehyde is modified by the following method：Formaldehyde and pregnancy urotropine are reacted into 2-3h at 40-50 DEG C, urea is added, is heated to
90-95 DEG C, pH to 7.8-8.0 is adjusted, insulation reflux 40-50min, adds ethanol and sec-butyl alcohol, adjust pH to 4.5-6.0, protect
Temperature reflux 60-70min.
Wherein, the quality of the pregnancy urotropine is the 5-10% of formaldehyde quality, and the quality of the urea is formaldehyde quality
90-99%, the quality of the ethanol is the 1.2-1.5% of formaldehyde quality, and the quality of the sec-butyl alcohol is formaldehyde quality
0.8-1.1%.
The present invention is modified Lauxite processing using ethanol and sec-butyl alcohol, can occur to be etherified copolycondensation,
Methylol, carbonyl in resin there are the association of hydrogen bond in water, it is therefore desirable in certain scope, reduce resin
The quantity of middle hydrophilic radical.In the Lauxite of etherified modification, part methylol loses activity, and association no longer occurs and hands over
Connection, while resin obtains a certain number of alkoxies, reduces the polarity of original molecule, improves resin water resistance and ageing-resistant
Property.
In addition, the present invention can increase weight-loss ratio, make ammonium polyphosphate by adding Nano cadmium sulphide in flame retardant coating
The phosphorus-containing compounds such as phosphoric acid or polyphosphoric acid are decomposed into, these compounds can accelerate the dehydration carbonization of system, so that charring rate carries
Height, weight loss rate reduce.Meanwhile the addition of Nano cadmium sulphide promotes the release of the non-flammable compressive gases such as nitrogenous gas, steam, makes charcoal
Further expansion, the porous intumescent carbonaceous froth bed of formation are more obvious for layer.But if Nano cadmium sulphide addition is excessive, to the greatest extent
The increase of pipe neat coal amout, but due to the excessive increase of its gas burst size, cause gas release excessively violent, cause in combustion
Close layer of charcoal is subject to the injection of a large amount of gases and partial rupture, so as to influence fire retardation.
In a kind of above-mentioned LEDbulb lamp shell, the PA6/PET composite base materials specifically include the group of following parts by weight
Point：PA6：80-85 parts, PET：20-25 parts, 1,4-butanediol diglycidyl ether：8-14 parts, maleic anhydride grafted ethene-pungent
Alkene copolymer：8-14 parts, crystalline flake graphite：5-10 parts, lanthanum borate：5-10 parts.
In LEDbulb lamp shell of the present invention, by using PA6/PET composite materials as collective, wherein, PA6 is compared
The general-purpose plastics such as PE, PP, have the advantages that wide technological temperature, excellent in mechanical performance, heat endurance are good, and PET is with higher
The advantages such as heat endurance, weatherability, dimensional stability, the composition using PA6 and PET as basis material, can ensure obtained
The mechanical performance of LEDbulb lamp shell and excellent heat endurance.
In a kind of above-mentioned LEDbulb lamp shell, 1,4-butanediol diglycidyl ether is added as compatilizer, Isosorbide-5-Nitrae-fourth
Compound of the Hexanediol diglycidyl ether as small molecule, during frit reaction it is highly dispersible in the melt, considerably increase
The contact of reaction active groups, reaction are abundant；And 1,4- butanediol diglycidyl ethers end group is difunctional epoxy construction
Open loop, extent of reaction higher are easier at high temperature.Meanwhile 1,4-butanediol diglycidyl ether reaction after add PA6 with
The long alkyl chains of pet polymer, therefore the mechanical property for the composite material that can be lifted.
In addition, in a kind of above-mentioned LEDbulb lamp shell, by adding maleic anhydride grafted ethene-octene copolymer, mix
Compound interface occurs without smooth hole, but the boundary of Relative Fuzzy, maleic anhydride grafted ethene-octene copolymer
Thing can be very good to be attached in copolymer systems, have good boundary cohesive force, so as to fulfill the toughness reinforcing to PA6 and PET
Effect.
The present invention can effectively improve the fire resistance of polystyrene by adding proper amount of nano lanthanum borate.Main cause is multiple
Nano boric acid lanthanum produces fine and close glassy state oxygen barrier in polystyrene matrix material surface to condensation material in decomposable process at high temperature
Layer, has blocked polymer surfaces combustibility decomposition product and oxygen exchange in air, alleviates the rhermal decomposition rate of composite material.
Preferably, the particle diameter of the nano boric acid lanthanum is 2-5 μm.
In a kind of above-mentioned LEDbulb lamp shell, the crystalline flake graphite is by the crystalline flake graphite of pretreatment, the pre- place
Reason specifically comprises the following steps：It is crystalline flake graphite quality by coupling agent and quality that quality is crystalline flake graphite quality 0.8-1.0%
The isopropanol stirring of 1.0-1.2% is stood, and high-speed mixer is put into the lump with crystalline flake graphite, reacts 20-30min at 70-80 DEG C.
Preferably, the coupling agent is titanate coupling agent.Untreated flake graphite's surface is hydrophilic and oleophobic and easy group
Poly-, the poor compatibility with organic polymer, it is bad to easily cause interfacial adhesion, so as to cause material overall mechanical properties to decline.
Therefore the present invention handles crystalline flake graphite and aluminium oxide by titanate coupling agent, the RO- groups wherein in titanate coupling agent
It is hydrolyzable lower alkyloxy, can reacts with mineral surfaces hydroxyl, so as to achieve the purpose that chemical coupling.By coupling
Crystalline flake graphite afterwards, due to the matrix used blend for polyester-polyamide, contains substantial amounts of end carboxyl, melting is squeezed in blend
During going out, coupling agent and matrix resin react, wherein, the part being grafted can be even used as, it is obvious to the reinforcement effect of segment, from
And improve obtained composite materials property.
In a kind of above-mentioned LEDbulb lamp shell, crystalline flake graphite is subjected to coupling processing, crystalline flake graphite has sheet knot
Structure, when after melting extrusion, crystalline flake graphite piece once can be peeling-off, has the macromolecule end of the chain reinforcement effect, improves system
Strength and stiffness, when crystalline flake graphite content is excessive, then easily accumulate in the base, weaker with bond matrix power, and stretching is strong
Rapid drawdown is spent, and rigidity is also with decline.Crystalline flake graphite can not only greatly improve thermal conductivity, and mechanical property is also improved.
Piece layer open interlamellar spacing significantly increases during melting extrusion, with the increase of crystalline flake graphite mass fraction, heat conductivity
Gradually increase.When crystalline flake graphite filling quality is few, crystalline flake graphite high degree of dispersion in the base, the heat conduction dredging collateral number that powder is formed
Mesh increases but disperses each other, when mass fraction continues increase, with increasing for thermal conducting path, easily forms thermal conductive network to each other
Network, thermal conductivity are increased sharply.
It is another object of the present invention to provide a kind of preparation method of above-mentioned LEDbulb lamp shell, the preparation side
Method specifically comprises the following steps：
The component of PA6/PET composite base materials is weighed, it is mixed in height first by PA6, PET and 1,4-butanediol diglycidyl ether
Extruder melting extrusion is put into after the mixing of machine room temperature to be granulated, and compatibilizing copolymer is molded to obtain after drying；
Obtained compatibilizing copolymer and maleic anhydride grafted ethene-octene copolymer are placed in after high mixer room temperature mixes again
Put into extruder melting extrusion to be granulated, traction, pelletizing, dry to obtain compatibilization and toughening copolymer；
By compatibilization and toughening copolymer and crystalline flake graphite, nano boric acid lanthanum in high-speed mixer and mixing, input double screw extruder
Middle traction, pelletizing, oven for drying obtain LEDbulb lamp shell semi-finished product；
The raw material of flame retardant coating is weighed, ultrasonic disperse is uniform must to mix flame-retardant slurry；
Mixing flame-retardant slurry is obtained into LEDbulb lamp shell finished product coated on LEDbulb lamp shell semi-finished product.
In a kind of above-mentioned preparation method of LEDbulb lamp shell, described each section of temperature setting of extruder is 180-200
℃、230-250℃、260-280℃、270-290℃、270-290℃、270-290℃、265-280℃。
In a kind of above-mentioned preparation method of LEDbulb lamp shell, described each section of temperature setting of injection moulding machine is 270-
290℃、270-290℃、270-290℃、270-290℃。
Compared with prior art, the invention has the advantages that：
1st, the present invention is modified Lauxite processing using ethanol and sec-butyl alcohol, can occur to be etherified copolycondensation
Improve resin water resistance and resistance to ag(e)ing；
2nd, the present invention by using PA6/PET composite materials as matrix, wherein, PA6 compares the general-purpose plastics such as PE, PP,
Have the advantages that wide technological temperature, excellent in mechanical performance, heat endurance are good, and PET have higher heat endurance, weatherability,
PA6 and PET, are used as the composition of basis material by the advantages such as dimensional stability, can ensure made from LEDbulb lamp shell machine
Tool performance and excellent heat endurance.
3rd, the present invention is by the rational anti-flaming dope of compatibility and base material, and combines specific preparation method, can make to be made
LEDbulb lamp shell finished product fire retardation it is good.
Embodiment
It is the embodiment of the present invention below, technical scheme is further described, but the present invention
It is not limited to these embodiments.
Embodiment 1
The component of PA6/PET composite base materials is weighed, it is mixed in height first by PA6, PET and 1,4-butanediol diglycidyl ether
Extruder melting extrusion is put into after machine room temperature mixing 5min to be granulated, and compatibilizing copolymer is molded to obtain after drying；The PA6/PET is compound
Base material specifically includes the component of following parts by weight：PA6：80 parts, PET：20 parts, 1,4-butanediol diglycidyl ether：8 parts,
Maleic anhydride grafted ethene-octene copolymer：8 parts, crystalline flake graphite：5 parts, nano boric acid lanthanum：5 parts；The injection moulding machine is each
Section temperature setting is 270 DEG C, 270 DEG C, 270 DEG C, 270- DEG C；
Obtained compatibilizing copolymer is placed in high mixer room temperature with maleic anhydride grafted ethene-octene copolymer again to mix
Put into extruder melting extrusion after 5min to be granulated, traction, pelletizing, dry to obtain compatibilization and toughening copolymer；
By compatibilization and toughening copolymer and crystalline flake graphite, nano boric acid lanthanum in high-speed mixer and mixing, input double screw extruder
Middle traction, pelletizing, oven for drying obtain LEDbulb lamp shell semi-finished product；The particle diameter of nano boric acid lanthanum is 2 μm；Crystalline flake graphite is warp
The crystalline flake graphite of pretreatment is crossed, the pretreatment specifically comprises the following steps：By the coupling that quality is crystalline flake graphite quality 0.8%
Agent is stood with quality for the isopropanol stirring of crystalline flake graphite quality 1.0%, high-speed mixer is put into the lump with crystalline flake graphite, 70
DEG C reaction 20min；Described each section of temperature setting of double screw extruder for 180 DEG C, 230 DEG C, 260 DEG C, 270 DEG C, 270 DEG C, 270
℃、265℃；
The raw material of flame retardant coating is weighed, ultrasonic disperse is uniform must to mix flame-retardant slurry；The flame retardant coating specifically include as
The component of lower parts by weight：Modified urea-formaldehyde resin：90 parts, ammonium polyphosphate：15 parts, pentaerythrite：12 parts, melamine：5 parts,
Calcium carbonate：2 parts, organobentonite：2 parts, Nano cadmium sulphide：2 parts；The modified urea-formaldehyde resin is modified by the following method：Will
Formaldehyde and pregnancy urotropine react 2h at 40 DEG C, add urea, are heated to 90 DEG C, adjust pH to 7.8, insulation reflux 40min,
Ethanol and sec-butyl alcohol are added, adjusts pH to 4.5, insulation reflux 60min；The quality of the pregnancy urotropine is formaldehyde quality
5%, the quality of the urea is the 90% of formaldehyde quality, and the quality of the ethanol is the 1.2% of formaldehyde quality, the sec-butyl alcohol
Quality be formaldehyde quality 0.8%；
Mixing flame-retardant slurry is obtained into LEDbulb lamp shell finished product coated on LEDbulb lamp shell semi-finished product.
Embodiment 2
The component of PA6/PET composite base materials is weighed, it is mixed in height first by PA6, PET and 1,4-butanediol diglycidyl ether
Extruder melting extrusion is put into after machine room temperature mixing 6min to be granulated, and compatibilizing copolymer is molded to obtain after drying；The PA6/PET is compound
Base material specifically includes the component of following parts by weight：PA6：81 parts, PET：21 parts, 1,4-butanediol diglycidyl ether：9 parts,
Maleic anhydride grafted ethene-octene copolymer：89 parts, crystalline flake graphite：6 parts, nano boric acid lanthanum：6 parts；The injection moulding machine is each
Section temperature setting is 275 DEG C, 275 DEG C, 275 DEG C, 275 DEG C；
Obtained compatibilizing copolymer is placed in high mixer room temperature with maleic anhydride grafted ethene-octene copolymer again to mix
Put into extruder melting extrusion after 6min to be granulated, traction, pelletizing, dry to obtain compatibilization and toughening copolymer；
By compatibilization and toughening copolymer and crystalline flake graphite, nano boric acid lanthanum in high-speed mixer and mixing, input double screw extruder
Middle traction, pelletizing, oven for drying obtain LEDbulb lamp shell semi-finished product；The particle diameter of nano boric acid lanthanum is 3 μm；Crystalline flake graphite is warp
The crystalline flake graphite of pretreatment is crossed, the pretreatment specifically comprises the following steps：By the idol that quality is crystalline flake graphite quality 0.85%
Join agent to stand for the isopropanol stirring of crystalline flake graphite quality 1.05% with quality, high-speed mixer be put into the lump with crystalline flake graphite,
22min is reacted at 72 DEG C；Described each section of temperature setting of double screw extruder for 185 DEG C, 235 DEG C, 265 DEG C, 275 DEG C, 275 DEG C,
275℃、270℃；
The raw material of flame retardant coating is weighed, ultrasonic disperse is uniform must to mix flame-retardant slurry；The flame retardant coating specifically include as
The component of lower parts by weight：Modified urea-formaldehyde resin：92 parts, ammonium polyphosphate：16 parts, pentaerythrite：13 parts, melamine：6 parts,
Calcium carbonate：3 parts, organobentonite：3 parts, Nano cadmium sulphide：3 parts；The modified urea-formaldehyde resin is modified by the following method：Will
Formaldehyde and pregnancy urotropine react 2.2h at 43 DEG C, add urea, are heated to 91 DEG C, adjust pH to 7.85, insulation reflux
42min, adds ethanol and sec-butyl alcohol, adjusts pH to 4.7, insulation reflux 62min；The quality of the pregnancy urotropine is formaldehyde matter
The 6% of amount, the quality of the urea are the 92% of formaldehyde quality, and the quality of the ethanol is the 1.3% of formaldehyde quality, described secondary
The quality of butanol is the 0.87% of formaldehyde quality；
Mixing flame-retardant slurry is obtained into LEDbulb lamp shell finished product coated on LEDbulb lamp shell semi-finished product.
Embodiment 3
The component of PA6/PET composite base materials is weighed, it is mixed in height first by PA6, PET and 1,4-butanediol diglycidyl ether
Extruder melting extrusion is put into after machine room temperature mixing 7min to be granulated, and compatibilizing copolymer is molded to obtain after drying；The PA6/PET is compound
Base material specifically includes the component of following parts by weight：PA6：83 parts, PET：23 parts, 1,4-butanediol diglycidyl ether：11 parts,
Maleic anhydride grafted ethene-octene copolymer：11 parts, crystalline flake graphite：8 parts, nano boric acid lanthanum：8 parts；The injection moulding machine is each
Section temperature setting is 280 DEG C, 280 DEG C, 280 DEG C, 280 DEG C；
Obtained compatibilizing copolymer is placed in high mixer room temperature with maleic anhydride grafted ethene-octene copolymer again to mix
Put into extruder melting extrusion after 8min to be granulated, traction, pelletizing, dry to obtain compatibilization and toughening copolymer；
By compatibilization and toughening copolymer and crystalline flake graphite, nano boric acid lanthanum in high-speed mixer and mixing, input double screw extruder
Middle traction, pelletizing, oven for drying obtain LEDbulb lamp shell semi-finished product；The particle diameter of nano boric acid lanthanum is 3 μm；Crystalline flake graphite is warp
The crystalline flake graphite of pretreatment is crossed, the pretreatment specifically comprises the following steps：By the coupling that quality is crystalline flake graphite quality 0.9%
Agent is stood with quality for the isopropanol stirring of crystalline flake graphite quality 1.1%, high-speed mixer is put into the lump with crystalline flake graphite, 75
DEG C reaction 25min；Described each section of temperature setting of double screw extruder for 190 DEG C, 240 DEG C, 270 DEG C, 280 DEG C, 280 DEG C, 280
℃、272℃；
The raw material of flame retardant coating is weighed, ultrasonic disperse is uniform must to mix flame-retardant slurry；The flame retardant coating specifically include as
The component of lower parts by weight：Modified urea-formaldehyde resin：95 parts, ammonium polyphosphate：18 parts, pentaerythrite：13 parts, melamine：8 parts,
Calcium carbonate：4 parts, organobentonite：4 parts, Nano cadmium sulphide：3 parts；The modified urea-formaldehyde resin is modified by the following method：Will
Formaldehyde and pregnancy urotropine react 2.5h at 45 DEG C, add urea, are heated to 93 DEG C, adjust pH to 7.9, insulation reflux
45min, adds ethanol and sec-butyl alcohol, adjusts pH to 5.3, insulation reflux 65min；The quality of the pregnancy urotropine is formaldehyde matter
The 8% of amount, the quality of the urea are the 95% of formaldehyde quality, and the quality of the ethanol is the 1.35% of formaldehyde quality, described
The quality of sec-butyl alcohol is the 1.05% of formaldehyde quality；
Mixing flame-retardant slurry is obtained into LEDbulb lamp shell finished product coated on LEDbulb lamp shell semi-finished product.
Embodiment 4
The component of PA6/PET composite base materials is weighed, it is mixed in height first by PA6, PET and 1,4-butanediol diglycidyl ether
Extruder melting extrusion is put into after machine room temperature mixing 9min to be granulated, and compatibilizing copolymer is molded to obtain after drying；The PA6/PET is compound
Base material specifically includes the component of following parts by weight：PA6：84 parts, PET：24 parts, 1,4-butanediol diglycidyl ether：12 parts,
Maleic anhydride grafted ethene-octene copolymer：12 parts, crystalline flake graphite：9 parts, nano boric acid lanthanum：9 parts；The injection moulding machine is each
Section temperature setting is 285 DEG C, 285 DEG C, 285 DEG C, 285 DEG C；
Obtained compatibilizing copolymer is placed in high mixer room temperature with maleic anhydride grafted ethene-octene copolymer again to mix
Put into extruder melting extrusion after 9min to be granulated, traction, pelletizing, dry to obtain compatibilization and toughening copolymer；
By compatibilization and toughening copolymer and crystalline flake graphite, nano boric acid lanthanum in high-speed mixer and mixing, input double screw extruder
Middle traction, pelletizing, oven for drying obtain LEDbulb lamp shell semi-finished product；The particle diameter of nano boric acid lanthanum is 4 μm；Crystalline flake graphite is warp
The crystalline flake graphite of pretreatment is crossed, the pretreatment specifically comprises the following steps：By the idol that quality is crystalline flake graphite quality 0.95%
Join agent to stand for the isopropanol stirring of crystalline flake graphite quality 1.15% with quality, high-speed mixer be put into the lump with crystalline flake graphite,
28min is reacted at 78 DEG C；Described each section of temperature setting of double screw extruder for 195 DEG C, 245 DEG C, 275 DEG C, 285 DEG C, 285 DEG C,
285℃、278℃；
The raw material of flame retardant coating is weighed, ultrasonic disperse is uniform must to mix flame-retardant slurry；The flame retardant coating specifically include as
The component of lower parts by weight：Modified urea-formaldehyde resin：98 parts, ammonium polyphosphate：18 parts, pentaerythrite：14 parts, melamine：8 parts,
Calcium carbonate：4 parts, organobentonite：4 parts, Nano cadmium sulphide：4 parts；The modified urea-formaldehyde resin is modified by the following method：Will
Formaldehyde and pregnancy urotropine react 2.8h at 48 DEG C, add urea, are heated to 94 DEG C, adjust pH to 7.95, insulation reflux
48min, adds ethanol and sec-butyl alcohol, adjusts pH to 5.5, insulation reflux 68min；The quality of the pregnancy urotropine is formaldehyde matter
The 9% of amount, the quality of the urea are the 98% of formaldehyde quality, and the quality of the ethanol is the 1.45% of formaldehyde quality, described
The quality of sec-butyl alcohol is the 1.0% of formaldehyde quality；
Mixing flame-retardant slurry is obtained into LEDbulb lamp shell finished product coated on LEDbulb lamp shell semi-finished product.
Embodiment 5
The component of PA6/PET composite base materials is weighed, it is mixed in height first by PA6, PET and 1,4-butanediol diglycidyl ether
Extruder melting extrusion is put into after machine room temperature mixing 10min to be granulated, and compatibilizing copolymer is molded to obtain after drying；The PA6/PET is answered
Close the component that base material specifically includes following parts by weight：PA6：85 parts, PET：25 parts, 1,4-butanediol diglycidyl ether：14
Part, maleic anhydride grafted ethene-octene copolymer：14 parts, crystalline flake graphite：10 parts, nano boric acid lanthanum：10 parts；It is described to be molded into
Each section of temperature setting of type machine is 290 DEG C, 290 DEG C, 290 DEG C, 290 DEG C；
Obtained compatibilizing copolymer is placed in high mixer room temperature with maleic anhydride grafted ethene-octene copolymer again to mix
Put into extruder melting extrusion after 10min to be granulated, traction, pelletizing, dry to obtain compatibilization and toughening copolymer；
By compatibilization and toughening copolymer and crystalline flake graphite, nano boric acid lanthanum in high-speed mixer and mixing, input double screw extruder
Middle traction, pelletizing, oven for drying obtain LEDbulb lamp shell semi-finished product；The particle diameter of nano boric acid lanthanum is 5 μm；Crystalline flake graphite is warp
The crystalline flake graphite of pretreatment is crossed, the pretreatment specifically comprises the following steps：By the coupling agent that quality is crystalline flake graphite quality 1%
Stir and stand for the isopropanol of crystalline flake graphite quality 1.2% with quality, high-speed mixer is put into the lump with crystalline flake graphite, at 80 DEG C
React 30min；Described each section of temperature setting of double screw extruder for 200 DEG C, 250 DEG C, 280 DEG C, 290 DEG C, 290 DEG C, 290 DEG C,
280℃；
The raw material of flame retardant coating is weighed, ultrasonic disperse is uniform must to mix flame-retardant slurry；The flame retardant coating specifically include as
The component of lower parts by weight：Modified urea-formaldehyde resin：90-100 parts, ammonium polyphosphate：20 parts, pentaerythrite：15 parts, melamine：
10 parts, calcium carbonate：5 parts, organobentonite：5 parts, Nano cadmium sulphide：5 parts；The modified urea-formaldehyde resin changes by the following method
Property：Formaldehyde and pregnancy urotropine are reacted into 3h at 50 DEG C, add urea, is heated to 95 DEG C, adjusts pH to 8.0, insulation reflux
50min, adds ethanol and sec-butyl alcohol, adjusts pH to 6.0, insulation reflux 70min；The quality of the pregnancy urotropine is formaldehyde matter
The 10% of amount, the quality of the urea are the 99% of formaldehyde quality, and the quality of the ethanol is the 1.5% of formaldehyde quality, described
The quality of sec-butyl alcohol is the 1.1% of formaldehyde quality；
Mixing flame-retardant slurry is obtained into LEDbulb lamp shell finished product coated on LEDbulb lamp shell semi-finished product.
Embodiment 6
With differing only in for embodiment 1, common modifications method modified urea-formaldehyde is used in the embodiment LEDbulb lamp shell
Resin, other are same as Example 1, and details are not described herein again.
Embodiment 7
With differing only in for embodiment 1, common substrate is used in the embodiment LEDbulb lamp shell, other and implementation
Example 1 is identical, and details are not described herein again.
Embodiment 8
With differing only in for embodiment 1, without adding crystalline flake graphite in the embodiment LEDbulb lamp shell, other with
Embodiment 1 is identical, and details are not described herein again.
Embodiment 9
With differing only in for embodiment 1, without adding nano boric acid lanthanum in the embodiment LEDbulb lamp shell, other
Same as Example 1, details are not described herein again.
Embodiment 10
With differing only in for embodiment 1, in the embodiment LEDbulb lamp shell crystalline flake graphite not by pretreatment,
Other are same as Example 1, and details are not described herein again.
Embodiment 11
With differing only in for embodiment 1, which uses common preparation method, other and reality
Apply that example 1 is identical, and details are not described herein again.
Comparative example 1
With differing only in for embodiment 1, the comparative example LEDbulb lamp shell is using common commercially available shell, other and reality
Apply that example 1 is identical, and details are not described herein again.
Comparative example 2
With differing only in for embodiment 1, which uses common flame retardant coating, other and reality
Apply that example 1 is identical, and details are not described herein again.
Comparative example 3
With differing only in for embodiment 1, which does not pass through pretreatment, its
He is same as Example 1, and details are not described herein again.
LEDbulb lamp shell in embodiment 1-11 and comparative example 1-3 is subjected to performance detection, the testing result such as institute of table 1
Show.
Anti-flammability measures：
The testing vertical flammability of 20mm is carried out according to UL standards 94, which determines in device and equipment
Part plastic material flammable test method.Sample is set to be subjected to the flame of 20mm according to the test procedure of defined.
Blue-flame is concentrated to apply to the midpoint of the bottom margin of these samples and continues three seconds.Then the flame is recalled and measures after-flame
Time (t1).Repeat the program and also measure the tail-off time (t2).Add up the summation T of all tail-off times and be also reported in
In table 1.
Table 1：LEDbulb lamp shell performance test results in embodiment 1-11 and comparative example 1-3
It can be seen from the results above that the present invention is modified Lauxite processing using ethanol and sec-butyl alcohol, can
Generation etherificate copolycondensation improves resin water resistance and resistance to ag(e)ing；Meanwhile the present invention is by using PA6/PET composite woods
Material be used as matrix, wherein, PA6 is compared to the general-purpose plastics such as PE, PP, with technological temperature is wide, excellent in mechanical performance, heat endurance are good
The advantages that, and PET has the advantages such as higher heat endurance, weatherability, dimensional stability, using PA6 and PET as basis material
Composition, can ensure the mechanical performance of obtained LEDbulb lamp shell and excellent heat endurance.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or supplement to described specific embodiment or substitute in a similar way, but simultaneously
The spirit or beyond the scope of the appended claims of the present invention is not deviated by.
It is skilled to this area although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (9)
1. a kind of LEDbulb lamp shell, it is characterised in that the LEDbulb lamp shell is made of PA6/PET composite base materials, institute
State PA6/PET composite base materials surface and be coated with flame retardant coating, the flame retardant coating specifically includes the component of following parts by weight：Change
Property Lauxite：90-100 parts, ammonium polyphosphate：15-20 parts, pentaerythrite：12-15 parts, melamine：5-10 parts, calcium carbonate：
2-5 parts, organobentonite：2-5 parts, Nano cadmium sulphide：2-5 parts.
2. a kind of LEDbulb lamp shell according to claim 1, it is characterised in that the modified urea-formaldehyde resin passes through such as
Lower method is modified：Formaldehyde and pregnancy urotropine are reacted into 2-3h at 40-50 DEG C, add urea, is heated to 90-95 DEG C, is adjusted
PH to 7.8-8.0, insulation reflux 40-50min, adds ethanol and sec-butyl alcohol, adjusts pH to 4.5-6.0, insulation reflux 60-
70min。
3. a kind of LEDbulb lamp shell according to claim 2, it is characterised in that the quality of the pregnancy urotropine is
The 5-10% of formaldehyde quality, the quality of the urea are the 90-99% of formaldehyde quality, and the quality of the ethanol is formaldehyde quality
1.2-1.5%, the quality of the sec-butyl alcohol are the 0.8-1.1% of formaldehyde quality.
4. a kind of LEDbulb lamp shell according to claim 1, it is characterised in that the PA6/PET composite base materials are specific
Include the component of following parts by weight：PA6：80-85 parts, PET：20-25 parts, 1,4-butanediol diglycidyl ether：8-14 parts,
Maleic anhydride grafted ethene-octene copolymer：8-14 parts, crystalline flake graphite：5-10 parts, nano boric acid lanthanum：5-10 parts.
5. a kind of LEDbulb lamp shell according to claim 4, it is characterised in that the particle diameter of the nano boric acid lanthanum is
2-5μm。
6. a kind of LEDbulb lamp shell according to claim 4, it is characterised in that the crystalline flake graphite is by pre- place
The crystalline flake graphite of reason, the pretreatment specifically comprise the following steps：By the coupling agent that quality is crystalline flake graphite quality 0.8-1.0%
Isopropanol stirring standing with quality is crystalline flake graphite quality 1.0-1.2%, high-speed mixer is put into crystalline flake graphite in the lump,
70-80 DEG C of reaction 20-30min.
A kind of 7. preparation method of LEDbulb lamp shell as claimed in claim 1, it is characterised in that the preparation method tool
Body includes the following steps：
The component of PA6/PET composite base materials is weighed, it is normal in high mixer first by PA6, PET and 1,4-butanediol diglycidyl ether
Extruder melting extrusion is put into after temperature mixing to be granulated, and compatibilizing copolymer is molded to obtain after drying；
Obtained compatibilizing copolymer is placed in after high mixer room temperature mixes with maleic anhydride grafted ethene-octene copolymer again and is put into
Extruder melting extrusion is granulated, and traction, pelletizing, dry to obtain compatibilization and toughening copolymer；
Compatibilization and toughening copolymer and crystalline flake graphite, nano boric acid lanthanum are led in high-speed mixer and mixing, input double screw extruder
Draw, pelletizing, oven for drying obtains LEDbulb lamp shell semi-finished product；
The raw material of flame retardant coating is weighed, ultrasonic disperse is uniform must to mix flame-retardant slurry；
Mixing flame-retardant slurry is obtained into LEDbulb lamp shell finished product coated on LEDbulb lamp shell semi-finished product.
8. the preparation method of LEDbulb lamp shell according to claim 7, it is characterised in that the double screw extruder
Each section of temperature setting is 180-200 DEG C, 230-250 DEG C, 260-280 DEG C, 270-290 DEG C, 270-290 DEG C, 270-290 DEG C,
265-280℃。
9. the preparation method of LEDbulb lamp shell according to claim 7, it is characterised in that the injection moulding machine is each
Section temperature setting is 270-290 DEG C, 270-290 DEG C, 270-290 DEG C, 270-290 DEG C.
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| CN105131783A (en) * | 2015-09-15 | 2015-12-09 | 云南倍特消防科技有限公司 | Fire retardant coating of super thin steel structure and preparation method thereof |
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| US3883463A (en) * | 1973-09-27 | 1975-05-13 | Stauffer Chemical Co | Flame retardant binder for flammable materials |
| JPH0330833A (en) * | 1989-06-28 | 1991-02-08 | Matsumoto Yushi Seiyaku Co Ltd | Preparation of polymer-coated particles |
| CN101117510A (en) * | 2007-09-14 | 2008-02-06 | 东北林业大学 | Modified amino resin expansion type water flame-proof paint |
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