CN107057322B - A kind of PC alloy material and preparation method thereof - Google Patents
A kind of PC alloy material and preparation method thereof Download PDFInfo
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Abstract
The present invention proposes a kind of PC alloy material and preparation method thereof, and the PC alloy material is mixed to prepare by 100 parts of PC resins, 18-25 parts of aluminium coating modification magnesium oxide powders, 12-16 parts of modified aluminum oxide powders, 5-8 parts of rutile type titanium whites, 6-12 parts of modified graphenes, 3-8 parts of composite toughing agents, 3-6 parts of composite flame-retardant agents, 8-20 parts of compatilizers, 1.5-2.5 parts of silane coupling agents, 0.5-1.5 parts of antioxidant, 0.5-1.2 parts of anti-dripping agents and 1.5-2 parts of UV absorbers.Pass through fusion PC resin and a variety of powders in PC alloy material of the present invention, and by improving processing so as to be blended in PC resin molten mass well to powder, and composite flame-retardant agent and composite toughing agent are innovated, so that obtained PC alloy material has good mechanics, calorifics, optically and electrically performance, belong to a kind of completely new PC alloy material, has a vast market popularization and application foreground.
Description
Technical field
The present invention relates to resin alloy technical fields, and in particular to a kind of high performance PC alloy material and its preparation side
Method.
Background technique
PC (polycarbonate) resin is a kind of superior engineering material of comprehensive performance, and fastest-rising in recent years general
Engineering plastics, have many advantages, such as excellent impact flexibility, weatherability, electrical apparatus insulation, are widely used in automobile, electricity at present
The fields such as son, building, equipment.But there is also some disadvantages for it, as processing fluidity is poor, is easy to stress cracking, quicker to notch
Sense, hygroscopic and wearability is not good enough etc., needs to add alloy material component wherein in actual use to improve it
Service performance.
PC alloy material in the prior art refers to that based on PC resin, mixing is added other materials and carries out high-temperature mixing
A kind of non-metal alloy material obtained afterwards, different performances, the prior art can be obtained by adding different materials in PC resin
Occur PC/ABS alloy material, PC/PMMA alloy material etc. in although, these PC alloy materials in the prior art are simultaneously
The superior function of inorganic material is not made full use of, the promotion of overall performance is very limited, this limits this to a certain extent
Application of the kind PC alloy material in certain fields.
Therefore how to all kinds of components in PC alloy material and function additive ingredient is appropriately selected and rational proportion, with
It is substantially improved that the calorifics of PC alloy material, mechanics, optically and electrically performance belongs to the technical problem and this field tool of this field
There is the technical issues of bright prospects.
Summary of the invention
The present invention is based on above-mentioned prior art problems, and by a large amount of engineering test, innovation proposes a kind of completely new composition
PC alloy material and preparation method thereof, the PC alloy material belongs to a kind of completely new PC material.PC alloy of the present invention
Fusion PC resin and a variety of inorganic particles in material by innovation, and innovate and inorganic powder material is carried out at the improvement of surface
Reason, while that innovates is configured with the composite flame-retardant agent and composite toughing agent completely newly formed, the selection other function auxiliary agent of innovation makes
Obtaining obtained PC alloy material has good mechanics, calorifics, optically and electrically performance, and tensile strength reaches 85-
100MPa, elongation at break are in 105-112%, bending strength in 135-155MPa, bending modulus 3500-4200MPa, notch punching
Hit intensity is in 42-55KJ/m2, UL-94 anti-flammability reach V0 grades in 0.5mm, 1mm and 3mm, properties are above ability
The performance of the common PC alloy material in domain, it is seen that PC alloy material collection high intensity obtained by the present invention, high tenacity, high fire-retardance are special
Property, high-wearing feature, high thermal stability etc., belong to a kind of alloy material that performance is splendid, have broad application prospects.
It is as follows that the present invention solves the technical solution that above-mentioned technical problem is taken:
A kind of PC alloy material includes following component according to the mass fraction:
Further PC alloy material according to the present invention, wherein the PC alloy material is by each of following mass parts
Component is mixed to prepare:
Further PC alloy material according to the present invention, wherein the PC resin is containing by following formula (I) tables
The polycarbonate of the structural unit (I) shown and the structural unit (II) indicated by following formula (II)s, and structural unit (I) and structure
The content of unit (II) reaches 90 moles of % or more of polycarbonate, while the content of structural unit (II) accounts for structural unit (I)
With 65~75 moles of % of structural unit (II) total amount:
Further PC alloy material according to the present invention, wherein the aluminium coating modification magnesium oxide powder passes through benefit
It is formed with technique for atomic layer deposition in magnesium oxide powder surface deposition of aluminum clad, wherein the partial size of magnesium oxide powder is 20-
50 microns, wherein the thickness of aluminium clad is in 1-10nm.
Further PC alloy material according to the present invention, wherein the modified aluminum oxide powder is surface warp
Silane-modified alumina powder, the alumina powder are nano aluminium oxide of the partial size in 55-90nm, Process of Surface Modification
It include: that alumina powder is dispersed in alcohol solvent by (1), the wherein mass/volume of alumina powder and alcohol solvent
Than for 1g/1mL；(2) silane coupling agent is added into step (1), the dosage of the silane coupling agent is alumina powder body weight
3-8%, adjusting solution pH value be 3-7, control reaction temperature at 60-70 DEG C, reacted 2-3.5 hours after being sufficiently stirred, wherein
The silane coupling agent is selected from methacryloxypropyl trimethoxy silane or 3-aminopropyltriethoxysilane；(3)
Lead to nitrogen into the reaction solution of step (2), while adding reaction monomers again, the reaction monomers are selected from sodium acrylate monomers or third
Acrylamide monomer, additive amount are that the 25-40% of alumina powder body weight adds initiator after then stirring 30-60 minutes
And stir evenly, it is persistently stirred to react between maintaining the temperature at 90-100 DEG C 5-7 hours, wherein the initiator is selected from potassium peroxydisulfate
Or ammonium persulfate, and the additive amount of the initiator is the 2-6% of the reaction monomers weight；(4) after the completion of total overall reaction, warp
Modified aluminum oxide powder is obtained after filtering, cleaning, drying.
Further PC alloy material according to the present invention, wherein the modified aluminum oxide powder is surface packet
The alumina powder of ammonium pyrrolidine dithiocarbamate is covered, 1. the specific treatment process that coats is the following steps are included: weigh partial size
It is placed in container in the alumina powder of 55-90nm, successively plus the KNO of the nitric acid solution of 0.001mol/L and 1mol/L3Solution,
Wherein alumina powder and the mass volume ratio of nitric acid solution are 1g:5-6mL, nitric acid solution and KNO3The volume ratio of solution is
25:1；2. the solution of step 1. is placed in ultrasonic disperse 10-15min under conditions of supersonic frequency 40KHz, ultrasonic power 250W,
Filtering, with secondary water washing to neutrality, the nano alumina powder jointed material activated is spare；3. weighing the nano oxygen of activation
Change aluminium powder body material, is suspended in neopelex and the mixed aqueous solution of ammonium pyrrolidine dithiocarbamate, instead
Answering temperature is 50-60 DEG C, wherein the mass volume ratio of the nano alumina powder jointed and mixed aqueous solution activated is 1g:10mL,
Concentration of the middle neopelex in mixed solution is 2g/L, and ammonium pyrrolidine dithiocarbamate is in mixed solution
Concentration be 10.0g/L；4. the solution of step 3. is placed in supersonic frequency 40KHz, ultrasonic power 250W, heating power 400W
Under the conditions of impregnation 10-15 minutes；5. after the completion of maceration, filtering is washed with distilled water 3-4 times, done under the conditions of 60 DEG C
The modified aluminum oxide powder of ammonium pyrrolidine dithiocarbamate cladding is made in dry 3h.
Further PC alloy material according to the present invention, wherein the modified graphene is silylating reagent graphite
Alkene, wherein graphene number of plies is between 1-100 layers, and modification process is the following steps are included: (1) prepares graphite oxide
Alkene；(2) the organic dispersion solution of graphene oxide is prepared, graphene oxide made from step (1) is dispersed in organic solvent
In, the organic dispersion solution of graphene oxide is obtained, wherein the mass ratio of the graphene oxide and organic solvent is 5-9:100,
The organic solvent is selected from alcohol ester 12, terpinol, tributyl citrate, triethanolamine, butyl carbitol, glutaric acid diformazan
At least one of ester, dimethyl adipate, repefral, oleic acid；(3) silylating reagent graphene oxide is prepared
Modifying agent is dispersed in the organic dispersion solution of graphene oxide made from step (2), obtains silylating reagent by dispersion liquid
Graphene oxide dispersion, wherein the usage amount of the modifying agent meets following relationship: the modifying agent and step (2) are obtained
The mass ratio of the graphene oxide dispersed in the organic dispersion solution of graphene oxide is 5-10:1, wherein the modifying agent choosing
From methyltrimethoxysilane, propyl trimethoxy silicane, octyl trimethoxy silane, octadecyl trimethoxysilane, two
Methyldiethoxysilane, octyl methyl dimethoxysilane, n-octytriethoxysilane, 3- (aminopropyl) triethoxy
At least one of silane；(4) redox graphene dispersion liquid is prepared, it is obtained that reducing agent is dispersed in step (3)
In silylating reagent graphene oxide dispersion, redox graphene dispersion liquid is obtained, wherein the usage amount of the reducing agent
Meet following relationship: the oxidation stone dispersed in the organic dispersion solution of graphene oxide made from the reducing agent and step (2)
The mass ratio of black alkene is 2-4:1, wherein the reducing agent is selected from ascorbic acid, sodium thiosulfate, dimethylhydrazine, hydrazine hydrate, second
Alcohol, diethylene glycol, N, at least one of N '-dicyclohexylcarbodiimide；(5) filtering, drying obtain the modified graphene,
Specifically redox graphene dispersion liquid made from step (4) is filtered by the pvdf membrane that aperture is 0.4-0.6 μm,
And repeatedly washed with ethyl alcohol or acetone, to remove remaining modifying agent and reducing agent, finally dry in a vacuum drying oven for 24 hours with
On, obtain the modified graphene.
Further PC alloy material according to the present invention, wherein the compound toughener is by main toughener and pair
Toughener is mixed to prepare according to mass ratio 1.5-2:1, and the main toughener is thermoplastic polyurethane elastomer, the pair toughener
For high-density polycthylene grafted maleic acid glycosides (HDPE-g-MAH)；The composite fire retardant is by main flame retardant and assisting flame-resistant
Agent is mixed to prepare according to mass ratio 1-1.2:1, and the main flame retardant is phosphorus-nitrogen-sulphur fire retardant, and structural formula is as follows:
The auxiliary flame retardant is alkyl aminosilane (Asia) phosphate, and structural formula is as follows:
Wherein R1And R2For (CH2)m, 1≤m≤6；R3For (CH2)kCH3, 0≤k≤5；R is (CH2)pCH3Or phenyl, 0≤p
≤5；1≤n≤6.
Further PC alloy material according to the present invention, wherein the compatilizer uses mass ratio for the second of 1:1
The compound of alkene-ethyl acrylate copolymer and styrene-grafted copolymer-maleic anhydride；The anti-dripping agent uses mass ratio
For the polytetrafluoroethylene (PTFE) of 3:1 and the compound of Kynoar；The antioxidant is Hinered phenols antioxidant and phosphorous acid esters
The mixture of antioxidant；The silane coupling agent by the terephthalic acid (TPA) calcium of 20-30 parts by weight, 10-15 parts by weight to benzene two
Double-vulcanization of (γ-triethoxy silicon substrate propyl) four of sodium formate, the terephthalic acid (TPA) aluminium of 10-20 parts by weight, 10-15 parts by weight
Object, the gamma-mercaptopropyltriethoxysilane of 8-12 parts by weight, the gamma-aminopropyl-triethoxy-silane of 12-20 parts by weight, 5-10
The hard charcoal of γ-(2,3- the third oxygen of epoxy) propyl trimethoxy silicanes of parts by weight, the stearic acid of 2-6 parts by weight and 5-12 parts by weight
Black hybrid reaction is made；The UV absorbers use 2- (2'- hydroxyl -3', 5'- di-t-butyl) -5- chlorinated benzotriazole.
Further PC alloy material according to the present invention, wherein the PC alloy material is tested in ASTM-D638
Bending of substandard tensile strength in 85-100MPa, elongation at break in 105-112%, under ASTM-D790 testing standard
In 135-155MPa, bending modulus in 3500-4200MPa, the notch impact strength under ASTM-D256 testing standard exists intensity
42-55KJ/m2, reach V0 grades in the fire-retardant rank of 0.5mm-3mm under UL-94 testing standard.
A kind of preparation method of PC alloy material of the present invention, comprising the following steps:
Step (1), by above-mentioned parts by weight weigh it is dry after the aluminium coating modification magnesium oxide powder, surface it is modified oxidized
Aluminium powder body and rutile type titanium white, obtained powder mixture after being sufficiently mixed uniformly；
Step (2), the PC resin for weighing above-mentioned parts by weight, and add together with powder mixture made from step (1)
Enter in high-speed mixer, while is added together by the weighed modified graphene of above-mentioned weight, composite flame-retardant agent, being answered
Toughener, compatilizer, silane coupling agent, antioxidant, anti-dripping agent and UV absorbers are closed, each substance high-speed stirred together is made
After 120~160 minutes are premixed, then by high-speed mixer discharge port by each material be sent into double screw extruder feeding
Mouthful, the processing temperature of double screw extruder is controlled at 180 DEG C~360 DEG C, and 120~500r/min of screw speed passes through twin-screw
Extrusion, cooling, dry, granulating and forming, obtain the PC alloy material after extruder plasticizing is blended.
Technical solutions according to the invention have following technological innovation and technical effect:
1) what, the present invention was pioneering has fused magnesium oxide powder, oxidation simultaneously in the PC alloy material based on PC resin
Aluminium powder body and titanium dioxide, so that obtained PC alloy material is in combination with PC resin material high tenacity, high-intensitive organic
Characteristic of material mechanics and the high shading of inorganic powder material, high rigidity, high-fire resistance, high flame retardant and high-wearing feature inorganic material
Mechanics, thermal property, and the optical property with high shading and UV absorption, the electric property stable with insulation and thermoelectricity,
Belong to a kind of completely new PC alloy material, market application prospect is wide.
2), in PC alloy of the present invention, innovation has carried out aluminium coating modification, to wherein to magnesium oxide powder therein
Alumina powder carried out organic surface modifying, compared with the prior art in only selection add a kind of inorganic powder material,
The shading for improving alloy material, wear-resisting, heat-resisting and anti-flammability are assembled not only through the innovation of a variety of inorganic powder materials, and
The addition graphene for being surface-treated by what is innovated to powder body material, and being innovated simultaneously, greatly improves powder body material and exists
Dispersion Fusion degree in reisn base material realizes the synthesis skill of evenly dispersed fusion inorganic powder material in PC alloy
Art creates a kind of completely new power PC alloy.
3) what, the present invention was pioneering has used homemade composite flame-retardant agent in PC alloy, what the composite flame-retardant agent was initiated
Using the mixing of phosphorus-nitrogen-sulphur fire retardant and alkyl aminosilane (Asia) phosphate flame retardants, realize a variety of in flame retardant molecule
The Performance Match of ignition-proof element greatly improves the flame retardant property of material while reducing fire retardant entirety usage amount.
4) what, the present invention was pioneering has used homemade composite toughing agent in PC alloy, and the composite toughing agent is by thermoplastic
Property the main toughener of the polyurethane elastomer and secondary toughener mixing group of high-density polycthylene grafted maleic acid glycosides (HDPE-g-MAH)
At greatly improving the toughness of PC alloy material.
5), function additive of the innovation choice of the present invention including silane coupling agent, compatilizer etc. simultaneously, so that PC tree
Rouge can be good at together with melting with a variety of powders, improve the thermal stability of PC alloy material.
6), PC alloy material of the present invention is by carrying out innovation choice and rational proportion to component in a word, so that made
The PC alloy material obtained has big breaking resistance, stretch-proof and bending resistance strong, heat-resistant antifriction good corrosion resistance, and flame retardant property is excellent
More, processing fluidity is good, has good mechanics, calorifics, optically and electrically comprehensive performance, the more reasonable section of simultaneous processing technique
It learns, reduces processing cost, have broad popularization and application prospect.
Specific embodiment
Technical solution of the present invention is described in detail below in conjunction with embodiments and examples, so that this field skill
Technical solution of the present invention can be more clearly understood in art personnel, but the protection scope being not intended to limit the present invention.
High intensity of the present invention, high tenacity, high flame retardant, high thermal stability, the superior PC alloy of thermally conductive shading performance
Material includes following component according to the mass fraction:
PC alloy material of the present invention is further preferred to be mixed to prepare by following each components:
The concrete composition structure and preparation process of above-mentioned each component in PC alloy material of the present invention are as described below:
(1) PC resin is according to the mass fraction 100 parts；
Further, the PC resin preferably contains the structural unit (I) indicated by following formula (I)s and by following formula
(II) polycarbonate of the structural unit (II) indicated, the content ratio of structural unit (II) is relative to structural unit (I) and knot
The total amount of structure unit (II) is 65~75 moles of %.
The polycarbonate preferably mainly contain as 1,4 cyclohexane dimethanol residue above structure unit (I) and
As the above structure unit (II) of -3,3,5- trimethyl-cyclohexane residue of 1,1- bis- (4- hydroxyphenyls), the present invention is not being damaged
Purpose in the range of, other well known copolymer compositions other than structural unit (I) and (II) can be contained.Further preferred
The PC resin is substantially made of above structure unit (I) and (II), preferably the structural unit of polycarbonate resin entirety
90 moles of % the above are above structure unit (I) and (II), still more preferably 95 moles of % the above are structural unit (I) and
(II).It can be improved the heat resistance of PC material entirety as the PC resin using the polycarbonate of this structure, and protect
It is demonstrate,proved with good production mobility.
(2) aluminium coating modification magnesium oxide powder is according to the mass fraction 18-25 parts, 20-23 parts preferred；
The aluminium coating modification magnesium oxide powder is the product that coating modification processing is carried out to magnesium oxide powder, wherein aoxidizing
The partial size of magnesium powder body is at 20-50 microns, preferably 25-35 microns, by technique for atomic layer deposition (ALD) in magnesium oxide powder
The surface of particle deposits to form aluminium clad, and wherein the thickness of aluminium clad is in 1-10nm, preferably between 5-8nm.Aluminium packet
It covers modified magnesium powder body and greatly improves dispersibility of the magnesium oxide-based powder in PC resin, and advantageously promoted oxidation
Performance of the magnesium performance in PC alloy material.
(3) modified aluminum oxide powder is according to the mass fraction 12-16 parts, preferably 12-15 parts；The table
Face modified aluminas powder is the silane modified alumina powder in surface, and alumina powder therein is nano aluminium oxide, tool
Body is γ-Al2O3, partial size 55-90nm.Specific method includes: that (1) by nano alumina powder jointed is dispersed in alcohol solvent
In, wherein alumina powder addition quality (by gram based on) proportionate relationship 1g:1mL with alcohol solvent volume (based on milliliter), it is excellent
Choosing disperses 100mg alumina powder in 100ml alcohol solvent；(2) add in the alumina fluid dispersion obtained to step (1)
Add silane coupling agent, wherein the dosage of the silane coupling agent is the 3-8% of nano alumina powder jointed weight, adjusts solution pH value
For 3-7, pH value is preferably adjusted using oxalic acid, and controls reaction temperature at 60-70 DEG C, reaction 2-3.5 hours, institute is sufficiently stirred
The silane coupling agent stated is selected from methacryloxypropyl trimethoxy silane or 3-aminopropyltriethoxysilane；(3)
Sufficiently lead to nitrogen into the reaction system solution after reaction, while adding reaction monomers again, the reaction monomers are selected from propylene
Sour sodium monomer or acrylamide monomer, additive amount are the 25-40% of nano alumina powder jointed weight, then stir 30-60min
Afterwards, it adds initiator and stirs evenly, maintain the temperature at 90-100 DEG C and be persistently stirred to react 5-7 hours, wherein described draw
It sends out agent and is selected from potassium peroxydisulfate or ammonium persulfate, and the addition quality of the initiator is the 2- that the reaction monomers add quality
6%；(4) it after the completion of total overall reaction, is filtered, is cleaned, the modified alumina powder in surface can be obtained after drying, after tested device oxygen
Change the surface coating rate of aluminium up to 5-10%.What the present invention innovated carries out silane-modified cladding to alumina powder, so that surface
Compatibility and dispersion stabilization of the modified alumina powder in resin matrix are substantially improved.
Also aluminium oxide optionally is carried out by coating ammonium pyrrolidine dithiocarbamate to alumina powder surface
The surface modification treatment of powder specifically includes the following steps: that 1. weighing nano alumina powder jointed (partial size 55-90nm) is placed in appearance
In device, successively plus 0.001mol/L nitric acid and 1mol/L KNO3 solution, wherein nano aluminium oxide/nitric acid solution g/mL is 1:
5-6, nitric acid solution/KNO3 solution volume ratio are 25:1；2. the solution of step 1. is placed in supersonic frequency 40KHz, ultrasonic function
Ultrasonic disperse 10-15min under conditions of rate 250W, filtering, with secondary water washing to neutrality, obtains the nano alumina powder jointed of activation
Material, it is spare；3. weighing the nano alumina powder jointed material of activation, it is suspended in neopelex and pyrrolidines two is thio
In the mixed aqueous solution of aminoquinoxaline, reaction temperature is 50-60 DEG C, wherein the nano aluminium oxide/mixed aqueous solution activated
G/mL is 1:10；Wherein concentration of the neopelex in mixed solution is 2g/L, pyrrolidines aminodithioformic acid
Concentration of the ammonium in mixed solution is 10.0g/L；4. by the solution of step 3. be placed in supersonic frequency 40KHz, ultrasonic power 250W,
Impregnation 10-15min under conditions of heating power 400W；5. after the completion of maceration, filtering is washed with distilled water 3-4 times,
Dry 3h, is made the surface-modified nano alumina powder of ammonium pyrrolidine dithiocarbamate modification under the conditions of 60 DEG C.
(4) modified graphene is according to the mass fraction 6-12 parts, preferably 8-10 parts；
The modified graphene is silylating reagent graphene, and wherein graphene number of plies is between 1-100 layers, preferably
Between 1-60 layer, further preferred between 1-30 layer, preferred between 1-10 layers, most preferred place
Between 1-5 layers.The preparation of the modified graphene comprises the following methods:
(1) graphene oxide is prepared.The graphene oxide (graphene oxide) is the oxide of graphene, stone
After Mo Jing oxidation, oxygen-containing functional group increases and keeps its property more active compared with graphite thereon, can be via various and oxygen-containing functional group
Reaction and improve nature, the graphene oxide is prepared by Hummers method or improved Hummers method.
(2) the organic dispersion solution of graphene oxide is prepared.Graphene oxide made from step (1) is dispersed in organic
In solvent, the organic dispersion solution of graphene oxide is obtained, wherein the mass ratio of the graphene oxide and organic solvent is 5-9:
100, the organic solvent is selected from alcohol ester 12, terpinol, tributyl citrate, triethanolamine, butyl carbitol, glutaric acid two
At least one of methyl esters, dimethyl adipate, repefral, oleic acid.The composition of the preferred organic solvent
Are as follows: by the alcohol ester 12 of 32-36 parts by weight, the terpinol of 3-5 parts by weight, the tributyl citrate of 4-6 parts by weight, 6-9 weight
Part triethanolamine, the butyl carbitol of 0.5-1 parts by weight, the dimethyl glutarate of 2-5 parts by weight, 0.4-1 parts by weight oneself
The oleic acid of acid dimethyl, the repefral of 2-4 parts by weight and 5-10 parts by weight collectively constitutes.
(3) silylating reagent graphene oxide dispersion is prepared.Modifying agent is dispersed in step (2) oxidation obtained
In the organic dispersion solution of graphene, silylating reagent graphene oxide dispersion is obtained, wherein the usage amount of the modifying agent is full
It is enough lower relationship: the graphite oxide dispersed in the organic dispersion solution of graphene oxide made from the modifying agent and step (2)
The mass ratio of alkene is 5-10:1, wherein the modifying agent is selected from methyltrimethoxysilane, propyl trimethoxy silicane, octyl
Trimethoxy silane, octadecyl trimethoxysilane, dimethyl diethoxysilane, octyl methyl dimethoxysilane, just
At least one of octyltri-ethoxysilane, 3- (aminopropyl) triethoxysilane.The further preferred modifying agent
Composition be the methyltrimethoxysilane of 10-12 parts by weight, the propyl trimethoxy silicane of 1-3 parts by weight, 2-5 parts by weight
Octyl trimethoxy silane, the octadecyl trimethoxysilane of 1-3 parts by weight, 0.5-0.8 parts by weight dimethyl diethoxy
Base silane, the octyl methyl dimethoxysilane of 0.6-0.8 parts by weight, 1.2-1.6 parts by weight n-octytriethoxysilane
With 3- (aminopropyl) triethoxysilane of 0.8-1.2 parts by weight.Due to surface of graphene oxide oxygen-containing group rich in
Group is easy to that hydrolysis occurs with the silicon oxygen bond of silylating reagent reagent, surface of graphene oxide is made to realize silylating reagent.
(4) redox graphene dispersion liquid is prepared.Reducing agent is dispersed in silylating reagent made from step (3)
In graphene oxide dispersion, redox graphene dispersion liquid is obtained.Wherein the usage amount of the reducing agent meets with ShiShimonoseki
System: the quality of the graphene oxide dispersed in the organic dispersion solution of graphene oxide made from the reducing agent and step (2)
Than for 2-4:1.Wherein the reducing agent is selected from ascorbic acid, sodium thiosulfate, dimethylhydrazine, hydrazine hydrate, ethyl alcohol, diethyl two
Alcohol, N, at least one of N '-dicyclohexylcarbodiimide.The composition of the preferred reducing agent is the anti-of 5-8 parts by weight
Bad hematic acid, the sodium thiosulfate of 0.5-1 parts by weight, the dimethylhydrazine of 2-4 parts by weight, the hydrazine hydrate of 1-3 parts by weight, 6-8 weight
The ethyl alcohol of part and the N of 0.5-2 parts by weight, N '-dicyclohexylcarbodiimide.
(5) it filters, drying obtains modified graphene.Specific method is preferably: by oxygen reduction fossil made from step (4)
Black alkene dispersion liquid is filtered by the pvdf membrane that aperture is 0.4-0.6 μm, and is repeatedly washed with ethyl alcohol or acetone, residual to remove
Remaining modifying agent and reducing agent, is finally dried for 24 hours in a vacuum drying oven, obtains modified graphene, obtained after tested to change
The graphene number of plies of property graphene is between 1-10 layers.
(5) rutile type titanium white is according to the mass fraction 5-8 parts, preferably 6-8 parts；Its partial size is 200-
600nm, at least 90% or more diameter of particle meet this condition.
(6) composite flame-retardant agent is according to the mass fraction 3-6 parts, preferably 5-6 parts；
Since polycarbonate (PC) can only achieve vertical combustion UL 94V -2 grade in itself, limit oxygen index (LOI) is about
It is 25%, with being growing for PC material application range, requires it with higher anti-flammability in some electronics, appliance field
Energy.In general, the method for improving PC Flame Retardancy energy is realized by adding different types of fire retardant, these are fire-retardant
Agent can be divided into according to ignition-proof element type difference containing fire retardants such as halogen, nitrogen phosphate and sulfur, silicon.Applicant is ground by for a long time fire-retardant
Studying carefully the fire retardant that discovery intramolecular contains the matched ignition-proof element of multiple performance is the ideal efficient flame-retarding agent of PC material.Therefore originally
The composite fire retardant for being manufactured fire retardant using itself innovation of innovation, is made of main flame retardant and auxiliary flame retardant and is pressed
It is mixed with according to the mode of mass ratio 1-1.2:1, wherein the main flame retardant includes phosphorus-nitrogen-sulphur fire retardant, molecular structure
Formula is as follows:
The mass content of the phosphorus-nitrogen-sulphur fire retardant should control the 1.5-3.6% in PC resin quality, in this range
Inside (use LOI analyzer: HC-2 type, Nanjing Jiangning analysis instrument factory after tested；Horizontal vertical burning analyzer: CZF -5
Type, Nanjing Jiangning analysis instrument factory；Thermogravimetric (TG) analyzer: NETZSCH -4 type, German Nai Chi instrument company) PC material
Fire-retardant LOI value reaches 35% or more.The PC when phosphorus-nitrogen-sulphur fire retardant is greater than 3.6% relative to the mass fraction of PC resin
LOI is intended to stablize.This illustrates the anti-flammability that PC cannot be improved by continuing growing additive amount, the possible reason is phosphorus-nitrogen-
Containing sulfo group and the poor P-O-C key of stability in sulfur molecule, a small amount of fire retardant can be catalyzed its generation at PC burning initial stage
It is crosslinked, at charcoal, and excessive fire retardant can not be crosslinked it, generate bigger catalytic action at charcoal process.It therefore is to make to hinder
Combustion performance further increases, and the auxiliary flame retardant that is added with main flame retardant cooperation, the auxiliary flame retardant is alkyl ammonia
Base silane (Asia) phosphate, skeleton symbol are shown below:
In the structural formula, R1And R2For (CH2)m, wherein 1≤m≤6；R3For (CH2)kCH3, wherein 0≤k≤5；R is
(CH2)pCH3Or phenyl, wherein 0≤p≤5；1≤n≤6.It is made up of this main flame retardant and auxiliary flame retardant compound
Fire retardant can greatly improve the flame-retarding characteristic of PC material, while main flame retardant therein also belongs to a kind of good PC anti-dripping melt
Agent.
(7) composite toughing agent is according to the mass fraction 3-8 parts, preferably 3-5 parts.The toughener used in the present invention is preferred
Also use composite toughing agent composed structure, including main toughener and secondary toughener, the mass ratio of the two is 1.5-2:1, described
Main toughener be thermoplastic polyurethane elastomer toughener, the thermoplastic polyurethane elastomer toughener by 70-90 weight
Measure the polyurethane-nano-powder composite components of part, the chain extender of 3-10 parts of parts by weight, 0.5-2 parts by weight antioxidant and
1.2-4 parts by weight hydrolysis stabilizer mixing be made, wherein the polyurethane-nano-powder composite components by polyether polyol,
Isocyanates, composite nano powder, silane coupling agent, chain extender and foam stabilizer reaction are made, and the polyurethane-nano-powder is multiple
It is combined the parts by weight of contained each ingredient in part itself composition are as follows: polyether polyol 30-75 parts by weight, isocyanates 10-40 weight
Measure part, composite nano powder 10-25 parts by weight, silane coupling agent 1.5-9 parts by weight, chain extender 5-25 parts by weight, foam stabilizer
0.5-3 parts by weight, wherein the partial size of the composite nano powder is between 20-50nm, and the composite nano powder is by partial size
In 20-50nm and mass percentage content 70-80% nano SiC, partial size is in 30-40nm and mass percentage content is in 5-
8% nano-TiO2, partial size in 30-60nm and mass percentage content in the nano-ZnO of 3-5%, partial size in 30-60nm and matter
Degree is measured in the nanometer Cr of 1-3%2O3, partial size in 30-40nm and mass percentage content 8-10% nanometer
AL2O3With partial size 30-50nm and mass percentage content 3-6% Nano-meter SiO_22Composition.The secondary toughener is high density
Polycthylene grafted maleic acid glycosides (HDPE-g-MAH) toughener.
(8) compatilizer is according to the mass fraction 8-20 parts, and preferably 10-15 parts, the compatilizer preferably uses quality
Than the compounding increase-volume of ethylene-ethyl acrylate copolymer (EEA) and styrene-grafted copolymer-maleic anhydride (SMA) for 1:1
Agent.
(9) anti-dripping agent is according to the mass fraction 0.5-1.2 parts, and preferably 0.6-1 parts, the anti-dripping agent is preferred
Use mass ratio for the compound of the polytetrafluoroethylene (PTFE) (PTFE) of 3:1 and Kynoar (PVDF)；
(10) antioxidant is according to the mass fraction 0.5-1.5 parts, and preferably 0.8-1.2 parts, the antioxidant is Hinered phenols
The mixing of antioxidant and phosphite ester antioxidant, the Hinered phenols antioxidant are bis- [β-(the tertiary fourths of 3- of triethylene-glycol
Base -4- hydroxy-5-methyl base phenyl) propionic ester], four [3- (3,5- di-t-butyl -4- hydroxyphenyl) propionic acid] quaternary amyl alcohol esters or β-(3,
5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester；The phosphite ester antioxidant is three (the tertiary fourths of 2.4- bis-
Base phenyl) phosphite ester or pentaerythrite diphosphite two (2.4- di-tert-butyl phenyl) ester.
(11) silane coupling agent is according to the mass fraction 1.5-2.5 parts, and preferably 2-2.5 parts, the preferred silane is even
Join agent itself by the terephthalic acid (TPA) calcium of 20-30 parts by weight, the para-phthalic sodium of 10-15 parts by weight, 10-20 parts by weight pair
Phthalic acid aluminium, double-(γ-triethoxy silicon substrate propyl) tetrasulfide of 10-15 parts by weight, 8-12 parts by weight γ-mercapto third
Ethyl triethoxy silicane alkane, the gamma-aminopropyl-triethoxy-silane of 12-20 parts by weight, 5-10 parts by weight γ-(2,3- epoxies third
Oxygen) propyl trimethoxy silicane, the stearic acid of 2-6 parts by weight and 5-12 parts by weight white carbon black hybrid reaction be made.
(12) UV absorbers are according to the mass fraction 1.5-2 parts, preferably 1.6-1.8 parts.The present invention innovate
UV light absorbing materials are added in PC alloy material, so that the PC alloy material has the ultraviolet band light other than visible light
There is good filtration, can effectively avoid ultraviolet radioactive injury caused by human body, the UV absorbers are excellent
Choosing uses 2- (2'- hydroxyl -3', 5'- di-t-butyl) -5- chlorinated benzotriazole.
The preparation method of high-strength PC alloy material of the present invention is given below, it is specific the following steps are included:
(1), each raw material is prepared according to above-mentioned composition；
(2), aluminium coating modification magnesium oxide powder, modified aluminum oxide powder after drying are weighed by above-mentioned weight proportion
And rutile type titanium white, after being sufficiently mixed uniformly, powder mixture is made；
(3), the PC resin of above-mentioned parts by weight is weighed, and high speed is added together with powder mixture made from step (2) and mixes
In conjunction machine, at the same together be added by the weighed modified graphene of the weight proportion, composite flame-retardant agent, composite toughing agent,
Compatilizer, silane coupling agent, antioxidant, anti-dripping agent and UV absorbers make each substance high agitation 120~160 together
After minute is premixed, then each material is sent by the discharge port of high-speed mixer the spout of double screw extruder, control is double
At 180 DEG C~360 DEG C, 120~500r/min of screw speed is plasticized the processing temperature of screw extruder by double screw extruder
It is squeezed out after blending, is cooling, dry, granulating and forming, obtaining the PC alloy material that the powder of the invention is reinforced.
The tensile strength of PC alloy material of the present invention reaches 85-100MPa after tested, and elongation at break is in 105-
112%, bending strength is in 135-155MPa, and bending modulus 3500-4200MPa, notch impact strength is in 42-55KJ/m2, UL94
Anti-flammability reaches V0 grades in 0.5mm, 1mm and 3mm, it is seen that PC alloy material collection high intensity, high-ductility obtained by the present invention
Property, high flame-retardant property, high thermal stability, belong to a kind of inorganic alloy material that energy-absorbing collection is good, have wide application
Prospect.
Embodiment 1
Each substance is weighed according to following parts by weight and is kneaded to obtain PC alloy material according to the method described above, wherein
Wherein 90 moles of % are the above are above structure unit (I) and (II) in PC resin, and the content of structural unit (II)
Ratio is 65 moles of % relative to the total amount of structural unit (I) and structural unit (II).
Wherein the partial size of 90% or more magnesium oxide powder is at 25-35 microns in aluminium coating modification magnesium oxide powder, aluminium packet
The thickness of coating is between 1-5nm.
Wherein modified aluminum oxide powder is the silane modified alumina powder in surface, wherein 90% or more oxidation
The partial size of aluminium powder body is between 60-80nm.
Modified graphene is silylating reagent graphene, and graphene number of plies is between 1-30 layers.
The partial size of rutile type titanium white is 200-400nm.
Composite flame-retardant agent therein is matched by main flame retardant and auxiliary flame retardant according to mass ratio 1:1.
Composite toughing agent therein is matched by main toughener and secondary toughener according to mass ratio 2:1.
Other components and specific preparation process are as described above, and wherein the present embodiment controls twin-screw in mixing process and squeezes
The processing temperature of machine is at 180 DEG C~260 DEG C, 130~260r/min of screw speed out, after being blended by double screw extruder plasticizing
It squeezes out, is cooling, dry, granulating and forming, obtaining the PC alloy material of the invention.
Embodiment 2
Each substance is weighed according to following parts by weight and is kneaded to obtain PC alloy material according to the method described above, wherein
Wherein 90 moles of % are the above are above structure unit (I) and (II) in PC resin, and the content of structural unit (II)
Ratio is 75 moles of % relative to the total amount of structural unit (I) and structural unit (II).
Wherein the partial size of 90% or more magnesium oxide powder is at 25-35 microns in aluminium coating modification magnesium oxide powder, aluminium packet
The thickness of coating is between 3-8nm.
Wherein modified aluminum oxide powder is the alumina powder that surface coats ammonium pyrrolidine dithiocarbamate,
In 90% or more alumina powder partial size between 60-80nm.
Wherein modified graphene is silylating reagent graphene, and graphene number of plies is between 1-15 layers.
Wherein the partial size of rutile type titanium white is 300-500nm.
Composite flame-retardant agent therein is prepared by main flame retardant and auxiliary flame retardant according to mass ratio 1:1.
Composite toughing agent therein is prepared by main toughener and secondary toughener according to mass ratio 1.8:1.
Other components and specific preparation process are as described above, and wherein the present embodiment controls twin-screw in mixing process and squeezes
The processing temperature of machine is at 280 DEG C~360 DEG C, 200~460r/min of screw speed out, after being blended by double screw extruder plasticizing
It squeezes out, is cooling, dry, granulating and forming, obtaining the PC alloy material of the invention.
Embodiment 3
Each substance is weighed according to following parts by weight and is kneaded to obtain PC alloy material according to the method described above, wherein
Wherein 90 moles of % are the above are above structure unit (I) and (II) in PC resin, and the content of structural unit (II)
Ratio is 72 moles of % relative to the total amount of structural unit (I) and structural unit (II).
Wherein the partial size of 90% or more magnesium oxide powder is at 25-35 microns in aluminium coating modification magnesium oxide powder, aluminium packet
The thickness of coating is between 6-10nm.
Wherein modified aluminum oxide powder is the silane modified alumina powder in surface, wherein 90% or more oxidation
The partial size of aluminium powder body is between 60-90nm.
Wherein modified graphene is silylating reagent graphene, and graphene number of plies is between 1-25 layers.
Wherein the partial size of rutile type titanium white is 400-600nm.
Composite flame-retardant agent therein is matched by main flame retardant and auxiliary flame retardant installation quality ratio 1.2:1.
Composite toughing agent therein is matched by main toughener and secondary toughener according to mass ratio 1.5:1.
Other components and specific preparation process are as described above, and wherein the present embodiment controls twin-screw in mixing process and squeezes
The processing temperature of machine is at 220 DEG C~280 DEG C, 180~400r/min of screw speed out, after being blended by double screw extruder plasticizing
It squeezes out, is cooling, dry, granulating and forming, obtaining the PC alloy material of the invention.
Embodiment 4
Each substance is weighed according to following parts by weight and is kneaded to obtain PC alloy material according to the method described above, wherein
Wherein 95 moles of % are the above are above structure unit (I) and (II) in PC resin, and the content of structural unit (II)
Ratio is 70 moles of % relative to the total amount of structural unit (I) and structural unit (II).
Wherein the partial size of 90% or more magnesium oxide powder is at 25-35 microns in aluminium coating modification magnesium oxide powder, aluminium packet
The thickness of coating is between 3-6nm.
Wherein modified aluminum oxide powder is the silane modified alumina powder in surface, wherein 90% or more oxidation
The partial size of aluminium powder body is between 60-90nm.
Wherein modified graphene is silylating reagent graphene, and graphene number of plies is between 1-15 layers.
Wherein the partial size of rutile type titanium white is 200-400nm.
Composite flame-retardant agent therein is matched by main flame retardant and auxiliary flame retardant according to mass ratio 1:1.
Composite toughing agent therein is matched by main toughener and secondary toughener according to mass ratio 2:1.
Other components and specific preparation process are as described above, and wherein the present embodiment controls twin-screw in mixing process and squeezes
The processing temperature of machine is at 210 DEG C~260 DEG C, 180~400r/min of screw speed out, after being blended by double screw extruder plasticizing
It squeezes out, is cooling, dry, granulating and forming, obtaining the PC alloy material of the invention.
The performance test of each embodiment is as follows:
It can be seen that PC alloy material obtained by the present invention collects high intensity, high tenacity, high flame-retardant property, high thermal stability in one
Body belongs to a kind of splendid inorganic shading alloy material of performance, has broad application prospects.
The above is only the preferred embodiment of the present invention is described, technical solution of the present invention is not limited to
This, those skilled in the art's made any known deformation on the basis of major technique design of the invention belongs to the present invention
Claimed technology scope, the specific protection scope of the present invention are subject to the record of claims.
Claims (6)
1. a kind of PC alloy material, which is characterized in that according to the mass fraction include following component:
It structural unit (I) and the structure that is indicated by following formula (II)s that wherein the PC resin, which is containing what is indicated by following formula (I)s,
The polycarbonate of unit (II), and the content of structural unit (I) and structural unit (II) reach 90 moles of % of polycarbonate with
On, while the content of structural unit (II) accounts for 65~75 moles of % of structural unit (I) and structural unit (II) total amount:
Wherein the aluminium coating modification magnesium oxide powder is by utilizing technique for atomic layer deposition in magnesium oxide powder surface deposition of aluminum
Clad and formed, wherein the partial size of magnesium oxide powder be 20-50 microns, wherein the thickness of aluminium clad is in 1-10nm；
Wherein the modified graphene is silylating reagent graphene, and wherein graphene number of plies is between 1-100 layers, is modified
Treatment process is the following steps are included: (1) prepares graphene oxide；(2) the organic dispersion solution of graphene oxide is prepared, by step
(1) graphene oxide made from is dispersed in organic solvent, the organic dispersion solution of graphene oxide is obtained, wherein the oxygen
The mass ratio of graphite alkene and organic solvent is 5-9:100, and the organic solvent is selected from alcohol ester 12, terpinol, citric acid three
Butyl ester, triethanolamine, butyl carbitol, dimethyl glutarate, dimethyl adipate, repefral, in oleic acid
It is at least one；(3) silylating reagent graphene oxide dispersion is prepared, modifying agent is dispersed in oxygen made from step (2)
In the organic dispersion solution of graphite alkene, silylating reagent graphene oxide dispersion is obtained, wherein the usage amount of the modifying agent
Meet following relationship: the oxidation stone dispersed in the organic dispersion solution of graphene oxide made from the modifying agent and step (2)
The mass ratio of black alkene is 5-10:1, wherein the modifying agent is selected from methyltrimethoxysilane, propyl trimethoxy silicane, pungent
Base trimethoxy silane, octadecyl trimethoxysilane, dimethyl diethoxysilane, octyl methyl dimethoxysilane,
At least one of n-octytriethoxysilane, 3- (aminopropyl) triethoxysilane；(4) redox graphene is prepared
Reducing agent is dispersed in silylating reagent graphene oxide dispersion made from step (3), obtains oxygen reduction by dispersion liquid
Graphite alkene dispersion liquid, wherein the usage amount of the reducing agent meets following relationship: oxygen made from the reducing agent and step (2)
The mass ratio of the graphene oxide dispersed in the organic dispersion solution of graphite alkene is 2-4:1, is resisted wherein the reducing agent is selected from
Bad hematic acid, sodium thiosulfate, dimethylhydrazine, hydrazine hydrate, ethyl alcohol, diethylene glycol, N, in N '-dicyclohexylcarbodiimide at least
It is a kind of；(5) filtering, drying obtain the modified graphene, specifically by redox graphene dispersion liquid made from step (4)
It is filtered by the pvdf membrane that aperture is 0.4-0.6 μm, and is repeatedly washed with ethyl alcohol or acetone, to remove remaining modifying agent
And reducing agent, it finally dries in a vacuum drying oven more than for 24 hours, obtains the modified graphene；
Wherein the compound toughener is mixed to prepare by main toughener and secondary toughener according to mass ratio 1.5-2:1, the master
Toughener is thermoplastic polyurethane elastomer, and the pair toughener is high-density polycthylene grafted maleic anhydride (HDPE-g-
MAH)；
Wherein the composite fire retardant is mixed to prepare by main flame retardant and auxiliary flame retardant according to mass ratio 1-1.2:1, described
Main flame retardant is phosphorus-nitrogen-sulphur fire retardant, and structural formula is as follows:
The auxiliary flame retardant is alkyl aminosilane (Asia) phosphate, and structural formula is as follows:
Wherein R1And R2For (CH2)m, 1≤m≤6；R3For (CH2)kCH3, 0≤k≤5；R is (CH2)pCH3Or phenyl, 0≤p≤5；1
≤n≤6；
Tensile strength of the PC alloy material under ASTM-D638 testing standard is in 85-100MPa, elongation at break in 105-
112%, bending strength under ASTM-D790 testing standard in 135-155MPa, bending modulus in 3500-4200MPa,
Notch impact strength under ASTM-D256 testing standard is in 42-55KJ/m2, 0.5mm-3mm's under UL-94 testing standard
Fire-retardant rank reaches V0 grades.
2. PC alloy material according to claim 1, which is characterized in that the PC alloy material is by each of following mass parts
Component is mixed to prepare:
3. PC alloy material according to claim 1 or 2, which is characterized in that the wherein modified aluminum oxide powder
Alumina powder for surface through silylating reagent, the alumina powder are nano aluminium oxide of the partial size in 55-90nm, table
Face modifying process includes: that alumina powder is dispersed in alcohol solvent by (1), wherein alumina powder and alcohol solvent
Mass/volume ratio is 1g/1mL；(2) silane coupling agent is added into step (1), the dosage of the silane coupling agent is aluminium oxide
The 3-8% of powder weight, adjusting solution p H value are 3-7, control reaction temperature at 60-70 DEG C, react 2-3.5 after being sufficiently stirred
Hour, wherein the silane coupling agent is selected from methacryloxypropyl trimethoxy silane or 3- aminopropyl triethoxy
Silane；(3) lead to nitrogen into the reaction solution of step (2), while adding reaction monomers again, the reaction monomers are selected from sodium acrylate
Monomer or acrylamide monomer, additive amount is the 25-40% of alumina powder body weight, after then stirring 30-60 minutes, then plus
Enter initiator and stir evenly, be persistently stirred to react between maintaining the temperature at 90-100 DEG C 5-7 hours, wherein the initiator is selected from
Potassium peroxydisulfate or ammonium persulfate, and the additive amount of the initiator is the 2-6% of the reaction monomers weight；(4) total overall reaction
After the completion, modified aluminum oxide powder is obtained after filtering, cleaning, drying.
4. PC alloy material according to claim 1 or 2, which is characterized in that the wherein modified aluminum oxide powder
The alumina powder of ammonium pyrrolidine dithiocarbamate is coated for surface, the specific treatment process that coats is the following steps are included: 1.
The alumina powder that partial size is weighed in 55-90nm is placed in container, successively plus the nitric acid solution of 0.001mol/L and 1mol/L
KNO3Solution, wherein alumina powder and the mass volume ratio of nitric acid solution are 1g:5-6mL, nitric acid solution and KNO3The body of solution
Product is than being 25:1；2. the solution of step 1. is placed in ultrasonic disperse 10- under conditions of supersonic frequency 40KHz, ultrasonic power 250W
15min, filtering, with secondary water washing to neutrality, the nano alumina powder jointed material activated is spare；3. weighing activation
Nano alumina powder jointed material is suspended in the mixed aqueous solution of neopelex and ammonium pyrrolidine dithiocarbamate
In, reaction temperature is 50-60 DEG C, wherein the mass volume ratio of the nano alumina powder jointed and mixed aqueous solution activated is 1g:
10mL, wherein concentration of the neopelex in mixed solution is 2g/L, and ammonium pyrrolidine dithiocarbamate is mixed
Closing the concentration in solution is 10.0g/L；4. the solution of step 3. is placed in supersonic frequency 40KHz, ultrasonic power 250W, heating function
Impregnation 10-15 minutes under conditions of rate 400W；5. after the completion of maceration, filtering is washed with distilled water 3-4 times, 60 DEG C
Under the conditions of dry 3h, the modified aluminum oxide powder of ammonium pyrrolidine dithiocarbamate cladding is made.
5. PC alloy material according to claim 1 or 2, which is characterized in that the compatilizer uses mass ratio for 1:1's
The compound of ethylene-ethyl acrylate copolymer and styrene-grafted copolymer-maleic anhydride；The anti-dripping agent uses quality
Than the compound of polytetrafluoroethylene (PTFE) and Kynoar for 3:1；The antioxidant is Hinered phenols antioxidant and phosphite ester
The mixture of kind antioxidant；The silane coupling agent by the terephthalic acid (TPA) calcium of 20-30 parts by weight, 10-15 parts by weight to benzene
Sodium diformate, the terephthalic acid (TPA) aluminium of 10-20 parts by weight, 10-15 parts by weight double-(γ-triethoxy silicon substrate propyl) four sulphur
Compound, the gamma-mercaptopropyltriethoxysilane of 8-12 parts by weight, the gamma-aminopropyl-triethoxy-silane of 12-20 parts by weight, 5-
γ-(2,3- the third oxygen of epoxy) propyl trimethoxy silicanes of 10 parts by weight, the stearic acid of 2-6 parts by weight and 5-12 parts by weight it is white
Carbon black hybrid reaction is made；The UV absorbers use 2- (2'- hydroxyl -3', 5'- di-t-butyl) -5- chloro benzo three
Azoles.
6. a kind of preparation method of any one of claim 1-5 PC alloy material, which comprises the following steps:
Step (1) is weighed the aluminium coating modification magnesium oxide powder, modified aluminum oxide powder after drying by above-mentioned parts by weight
Body and rutile type titanium white, obtained powder mixture after being sufficiently mixed uniformly；
Step (2), the PC resin for weighing above-mentioned parts by weight, and height is added together with powder mixture made from step (1)
In fast mixing machine, while being added press the weighed modified graphene of above-mentioned weight, composite flame-retardant agent, compound increasing together
Tough dose, compatilizer, silane coupling agent, antioxidant, anti-dripping agent and UV absorbers make each substance high-speed stirred 120 together
After~160 minutes are premixed, then by high-speed mixer discharge port by each material be sent into double screw extruder spout, control
For the processing temperature of double screw extruder processed at 180 DEG C~360 DEG C, 120~500r/min of screw speed passes through double screw extruder
Extrusion, cooling, dry, granulating and forming, obtain the PC alloy material after plasticizing is blended.
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| CN111925770A (en) * | 2017-11-12 | 2020-11-13 | 湖南七纬科技有限公司 | Preparation method of epoxy resin and organic silicon composite pouring sealant |
| CN108250483B (en) * | 2018-01-10 | 2020-05-12 | 四川大学 | Halogen-free hybrid flame-retardant particle, preparation method thereof and halogen-free flame-retardant polycarbonate material prepared from same |
| CN110452515A (en) * | 2019-08-26 | 2019-11-15 | 漳州吉合金属制品有限公司 | A kind of modified plastics and its preparation process |
| CN116969995A (en) * | 2022-04-29 | 2023-10-31 | 北京凯因科技股份有限公司 | 3CL protease inhibitors |
| CN118421052A (en) * | 2024-06-27 | 2024-08-02 | 纽宝力精化(广州)有限公司 | High-insulation flame-retardant epoxy resin composition and preparation method thereof |
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| CN105802215A (en) * | 2016-04-30 | 2016-07-27 | 宁波墨西科技有限公司 | Graphene antistatic plastic and preparation method thereof |
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