CN109206876A - polycarbonate composite material and preparation method thereof - Google Patents
polycarbonate composite material and preparation method thereof Download PDFInfo
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- CN109206876A CN109206876A CN201810829492.3A CN201810829492A CN109206876A CN 109206876 A CN109206876 A CN 109206876A CN 201810829492 A CN201810829492 A CN 201810829492A CN 109206876 A CN109206876 A CN 109206876A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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Abstract
The invention belongs to field of material technology, and in particular to a kind of polycarbonate composite material and preparation method thereof.The polycarbonate composite material includes the component of following parts by weight: 65-91 parts of polycarbonate；1-20 parts of silicon boron flame retardant；0.1-1 parts of anti-dripping agent；2-10 parts of barium sulfate；0.5-2 parts of titanium dioxide；0.1-2 parts of processing aid.In the polycarbonate composite material, silicon boron flame retardant, titanium dioxide, barium sulfate and anti-dripping agent compounding, the firing resistance of polycarbonate composite material not only can be improved, and polycarbonate composite material is made to be able to satisfy 1.0mm V0 and 2.0mm the 5VA standard of UL94, and good shock resistance can be kept in the case where not adding toughener, by synergistic effect between each ingredient, the polycarbonate composite material of a kind of high CTI, high heat-resistant halogen-free flame-retardant is ultimately formed.
Description
Technical field
The invention belongs to field of material technology, and in particular to a kind of polycarbonate composite material and preparation method thereof.
Background technique
Polycarbonate (PC) resin has excellent electrical insulating property and good flame resistance, superior shock resistance, height
The advantages that heat-resisting, creep resistance and good stability of the dimension, has wide application space in electronic enterprises.With electronics electricity
The rapid development of device industry, used product are increasingly minimized, are thinning, this is just to the flame resistance of material and resistance to electric leakage
Marks rising property can more stringent requirements are proposed.
Creepage trace is the ability that material surface forms conductive path under the action of electric field and electrolyte, CTI
(Comparative Tracking Index, relatively electric trace index) value is to measure the important indicator of material proof tracking.
Fire retardation PC on the market generally uses Sulfonates fire retardant or phosphate ester flame retardants, and flame retardant property is difficult to meet UL94 mark
Quasi- 1.0mm V0 and 2.0mm 5VA, and, only PLC 3 grade, using phosphoric acid lower using Sulfonates fire retardant CTI value
Esters fire retardant, it is heat-resisting lower；The two is all difficult to meet wanting for the resistance to combustion of electronic apparatus product and anti creepage trace performance etc.
Ask, limit its transformer, connector, terminal box, in terms of application.
Therefore, the prior art has much room for improvement.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, a kind of polycarbonate composite material and its system are provided
Preparation Method, it is intended to solve existing PC material flame retardant effect difference and CTI value is low, it is difficult to which the technology for meeting electronic apparatus part performance is asked
Topic.
For achieving the above object, The technical solution adopted by the invention is as follows:
One aspect of the present invention provides a kind of polycarbonate composite material, and the polycarbonate composite material includes following weight
The component of part:
Silicon boron flame retardant used in polycarbonate composite material provided by the invention is different from fire-retardant instable
Sulfonates fire retardant, also different from the phosphate ester flame retardants of low heat resistant, which not only can be in height
Content it is mineral-filled under, be still able to maintain the preferable flame retardant property of polycarbonate composite material, and make polycarbonate multiple
Condensation material has high impact and heat resistance.Meanwhile titanium dioxide and barium sulfate compound, and it is multiple to be remarkably improved polycarbonate
The CTI of condensation material, titanium dioxide have high dielectric constant, very bright to the raising effect of the CTI of polycarbonate composite material
It is aobvious, but since its coloring and screening capacity are too strong, limit its answering in dark or black the product for having high CTI demand
With, and barium sulfate also dielectric constant with higher, it is compounded with titanium dioxide, both to the CTI for improving polycarbonate composite material
There is apparent help, while very little is influenced on the impact property of polycarbonate composite material, and barium sulfate is with close with PC
Refraction index, it is very low to the masking of the color of polycarbonate composite material, dark or black product can be prepared.Relative to existing
Technology, in polycarbonate composite material of the invention, silicon boron flame retardant, titanium dioxide, nano barium sulfate and anti-dripping agent are multiple
Match, the firing resistance of polycarbonate composite material not only can be improved, but also polycarbonate composite material is made to be able to satisfy UL94
1.0mm V0 and 2.0mm 5VA standard, and good shock resistance can be kept in the case where not adding toughener, respectively
By synergistic effect between a ingredient, the polycarbonate composite material of a kind of high CTI, high heat-resistant halogen-free flame-retardant is ultimately formed.
Another aspect of the present invention provides a kind of preparation method of polycarbonate composite material, includes the following steps:
Ingredient contained by above-mentioned polycarbonate composite material according to the invention and its content weigh each component materials respectively；
By the polycarbonate, the silicon boron flame retardant, the anti-dripping agent, the barium sulfate, the titanium dioxide
Mixed processing is carried out with the processing aid, obtains mixed material；
The mixed material is put into double screw extruder, melt pelletization is carried out, obtains the polycarbonate composite wood
Material.
The preparation method of polycarbonate composite material provided by the invention, it is simple for process, it is at low cost, it is final obtained
In polycarbonate composite material, polycarbonate is not only can be improved in silicon boron flame retardant, titanium dioxide and nano barium sulfate compounding
The firing resistance of composite material, and with the help of anti-dripping agent, polycarbonate composite material is able to satisfy the 1.0mm of UL94
V0 and 2.0mm 5VA standard, and good shock resistance, each ingredient can be kept in the case where not adding toughener
Between by synergistic effect, ultimately form the polycarbonate composite material of a kind of high CTI, high heat-resistant halogen-free flame-retardant.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
On the one hand, the embodiment of the invention provides a kind of polycarbonate composite material, the polycarbonate composite material packets
Include the component of following parts by weight:
Silicon boron flame retardant used in polycarbonate composite material provided in an embodiment of the present invention is different from fire-retardant shakiness
Qualitative Sulfonates fire retardant, also different from the phosphate ester flame retardants of low heat resistant, which not only can be with
Can high-content it is mineral-filled under, be still able to maintain the preferable flame retardant property of polycarbonate composite material, and make poly- carbon
Acid esters composite material has high impact and heat resistance.Meanwhile titanium dioxide and barium sulfate compound, and are remarkably improved poly- carbon
The CTI of acid esters composite material, titanium dioxide have high dielectric constant, make to the raising of the CTI of polycarbonate composite material
With it is obvious that limiting it in dark or black the product for having high CTI demand still since its coloring and screening capacity are too strong
Application, and barium sulfate also dielectric constant with higher compounds with titanium dioxide, both to improving polycarbonate composite material
CTI has apparent help, while influencing very little to the impact property of polycarbonate composite material, and barium sulfate has and PC phase
Close refraction index, it is very low to the color masking of polycarbonate composite material, dark or black product can be prepared.
In the polycarbonate composite material of the embodiment of the present invention, silicon boron flame retardant, titanium dioxide, nano barium sulfate and anti-
Dripping agent compounding, not only can be improved the firing resistance of polycarbonate composite material, but also enable polycarbonate composite material
Meet 1.0mm V0 and 2.0mm the 5VA standard of UL94, and good anti-impact can be kept in the case where not adding toughener
It hits performance, by synergistic effect between each ingredient, it is multiple to ultimately form a kind of high CTI, the polycarbonate of high heat-resistant halogen-free flame-retardant
Condensation material.
Further, in polycarbonate composite material provided in an embodiment of the present invention, the polycarbonate is selected from copolymerization virtue
Fragrant adoption carbonic ester or homopolymerization aromatic copolycarbonate.Preferably, it can be the bisphenol-A that viscosity average molecular weigh is 16000-33000
Type polycarbonate.Specific melt index range is 2-60g/10min；Glass transition temperature is 145-150 DEG C.In above-mentioned rule
PC within the scope of lattice is used to prepare polycarbonate composite material, can be better suited for the injection molding technique of blending extrusion.At this
In inventive embodiments, the parts by weight of polycarbonate are specifically as follows 65 parts, 70 parts, 75 parts, 80 parts, 84 parts, 90 parts, 91 parts etc..
Further, in polycarbonate composite material provided in an embodiment of the present invention, the chemistry of the silicon boron flame retardant
Contain following structural unit in structural formula:
Wherein, R1And R2For identical or different substituent group, and R1And R2In at least one be aryl, i.e., above-mentioned silicon boron
In flame retardant, one of monovalent substituent on silicon atom has the organic group containing aromatic ring.It is used in the embodiment of the present invention
Silicon boron flame retardant contain the distinctive silicon boron structure so that final polycarbonate composite material has better flame resistance
And high impact and heat resistance.In embodiments of the present invention, the parts by weight of silicon boron flame retardant are specifically as follows 1 part, 2
Part, 5 parts, 10 parts, 14 parts, 15 parts, 20 parts etc..
Further, in polycarbonate composite material provided in an embodiment of the present invention, the anti-dripping agent is selected from polytetrafluoro
Ethylene (PTFE) and/or modified polytetrafluoroethylene (PTFE).The polytetrafluoroethylene powder of polytetrafluorethylepowder powder or package modification can be selected
The polytetrafluoroethylene (PTFE) aqueous emulsion of end or package modification.The anti-dripping agent of the embodiment of the present invention is as a kind of synergistic flame retardant and silicon
Boron flame retardant synergistic effect, the flame retardant effect enhancing played.In embodiments of the present invention, the parts by weight of anti-dripping agent specifically may be used
Think 0.1 part, 0.2 part, 0.5 part, 0.6 part, 0.8 part, 1 part etc..
Further, in polycarbonate composite material provided in an embodiment of the present invention, the partial size of the barium sulfate is 30-
300nm, i.e. nanoscale barium sulfate.It is preferred that carrying out the modified barium sulfate in surface through aluminium oxide and/or polysiloxanes, after modified
Barium sulfate powder in the matrix of polycarbonate composite material be easier disperse, it is closer in conjunction with matrix resin, to compound
The performance of material influences smaller.And the partial size of titanium dioxide is 150-300nm, i.e., also selects nanoscale titanium dioxide, such as golden red
Stone-type titanium dioxide；Likewise it is preferred that carrying out the modified titanium dioxide in surface through aluminium oxide and/or polysiloxanes, after modified
Titanium dioxide powder is easier to disperse in the matrix of polycarbonate composite material, closer in conjunction with matrix resin, to compound
The performance of material influences smaller.
In the embodiment of the present invention, by being remarkably improved polycarbonate composite wood to titanium dioxide and barium sulfate compounding
The CTI of material, and can be in the application in dark or black the product for having high CTI demand.In embodiments of the present invention, titanium dioxide
The parts by weight of titanium are specifically as follows 0.5 part, 0.8 part, 1 part, 1.5 parts, 1.8 parts, 2 parts etc..The parts by weight of barium sulfate specifically can be with
It is 1 part, 2 parts, 3 parts, 5 parts, 9 parts, 10 parts etc..
Further, in polycarbonate composite material provided in an embodiment of the present invention, the processing aid be selected from antioxidant,
At least one of release agent, light stabilizer, toner pigment and insulation carbon black.The addition of above-mentioned processing aid can be mentioned further
The performance of high polycarbonate composite material.
In above-mentioned processing aid, the antioxygenic property of composite material is can be improved in antioxidant, and the antioxidant is selected from phenols
Antioxidant and/or phosphite ester antioxidant, including triphenyl phosphate, β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid ten
Eight carbon alcohol esters (trade names 1076), three (2,4- di-tert-butyl-phenyl) phosphite esters (trade names 168).Release agent is used
It is demoulded when improving composite processing, preferably release agent is selected from four stearic acid isoamyl alcohol esters, paraffin (such as solid paraffin) and silicon
At least one of alkane polymer.Light stabilizer is selected from light to improve composite material illumination condition stability inferior, light stabilizer
At least one of stabilizer 5411, light stabilizer 234 and stabilizer 531.The toner pigment be selected from iron oxide red, cobalt blue and
At least one of titan yellow, the toner pigment have good thermal stability and weatherability.And the carbon black that insulate is high-insulativity charcoal
It is black, there is higher level blackness and lower structure, the primary partial size for the carbon black that insulate is 20-25nm, compared with ordinary carbon black pigment,
The insulation carbon black insulating properties is more preferable, is not easy charing under the action of voltage and electrolyte and forms conductive path.
In embodiments of the present invention, the parts by weight of processing aid are 0.1-2 parts, i.e., stablize selected from antioxidant, release agent, light
After the mixing of at least one of agent, toner pigment and insulation carbon black, 0.1-2 parts are obtained.
On the other hand, the embodiment of the invention also provides a kind of preparation method of polycarbonate composite material, including it is as follows
Step:
S01: ingredient contained by the above-mentioned polycarbonate composite material according to the embodiment of the present invention and its content weigh respectively
Each component materials；
S02: by the polycarbonate, the silicon boron flame retardant, the anti-dripping agent, the barium sulfate, the dioxy
Change titanium and the processing aid carries out mixed processing, obtains mixed material；
S03: the mixed material is put into double screw extruder, carries out melt pelletization, and it is multiple to obtain the polycarbonate
Condensation material.
The preparation method of polycarbonate composite material provided in an embodiment of the present invention, it is simple for process, it is at low cost, finally
In polycarbonate composite material obtained, silicon boron flame retardant, titanium dioxide, nano barium sulfate and anti-dripping agent compounding, not only
The firing resistance of polycarbonate composite material can be improved, and polycarbonate composite material is made to be able to satisfy the 1.0mm of UL94
V0 and 2.0mm 5VA standard, and good shock resistance can be kept in the case where not adding toughener, it is each at point it
Between by synergistic effect, ultimately form the polycarbonate composite material of a kind of high CTI, high heat-resistant halogen-free flame-retardant.
Further, in above-mentioned steps S01: each component materials specific choice has been described in detail above, here not
It illustrates again.
Further, in above-mentioned steps S02: mixed processing carries out in a mixer, general premix 5-10 minutes
It is uniformly mixed.
Further, in above-mentioned steps S03: the temperature parameter of the double screw extruder includes: an area temperature 200-
220 DEG C, two 230-240 DEG C of area's temperature, three 245-265 DEG C of area's temperature, four 260-280 DEG C of area's temperature, five area temperature 260-280
DEG C, six 260-280 DEG C of area's temperature, seven 260-280 DEG C of area's temperature, eight 260-280 DEG C of area's temperature, 255-285 DEG C of die head temperature.More
Preferably, the engine speed of the double screw extruder is 340-350 revs/min, screw slenderness ratio 38-40:1.
The above-mentioned mixed material after mixed processing is added twin-screw extrude by main spout, by above-mentioned melting
The high CTI of the embodiment of the present invention, the polycarbonate composite wood of high heat-resistant halogen-free flame-retardant can be obtained in extrusion process, stretching and granulation
Material.
The present invention successively carried out test of many times, and it is further detailed as reference pair invention progress now to lift A partial experiment result
Thin description, is described in detail combined with specific embodiments below.
Embodiment 1
A kind of polycarbonate composite material is formulated the embodiment 1 being shown in Table in 1.The preparation of the polycarbonate composite material
Method includes the following steps:
(1) each component is weighed according to the formula of embodiment 1 in table 1；
(2) above-mentioned each component is subjected to mixed processing, obtains mixed material；
(3) mixture is carried out by melting extrusion by double screw extruder, production technology is as follows: double screw extruder
One 210 DEG C of area's temperature, two 240 DEG C of area's temperature, three 265 DEG C of area's temperature, four 270 DEG C of area's temperature, five 270 DEG C of area's temperature, six area's temperature
270 DEG C of degree, seven 270 DEG C of area's temperature, eight 270 DEG C of area's temperature, 275 DEG C of die head temperature, engine speed is 350 revs/min, and screw rod is long
Diameter ratio is 40:1.
Embodiment 2
A kind of polycarbonate composite material is formulated the embodiment 2 being shown in Table in 1.The preparation of the polycarbonate composite material
Method includes the following steps:
(1) each component is weighed according to the formula of embodiment 2 in table 1；
(2) above-mentioned each component is subjected to mixed processing, obtains mixed material；
(3) mixture is carried out by melting extrusion by double screw extruder, production technology is as follows: double screw extruder
One 210 DEG C of area's temperature, two 240 DEG C of area's temperature, three 265 DEG C of area's temperature, four 270 DEG C of area's temperature, five 270 DEG C of area's temperature, six area's temperature
270 DEG C of degree, seven 270 DEG C of area's temperature, eight 270 DEG C of area's temperature, 275 DEG C of die head temperature, engine speed is 350 revs/min, and screw rod is long
Diameter ratio is 40:1.
Embodiment 3
A kind of polycarbonate composite material is formulated the embodiment 3 being shown in Table in 1.The preparation of the polycarbonate composite material
Method includes the following steps:
(1) each component is weighed according to the formula of embodiment 3 in table 1；
(2) above-mentioned each component is subjected to mixed processing, obtains mixed material；
(3) mixture is carried out by melting extrusion by double screw extruder, production technology is as follows: double screw extruder
One 210 DEG C of area's temperature, two 240 DEG C of area's temperature, three 265 DEG C of area's temperature, four 270 DEG C of area's temperature, five 270 DEG C of area's temperature, six area's temperature
270 DEG C of degree, seven 270 DEG C of area's temperature, eight 270 DEG C of area's temperature, 275 DEG C of die head temperature, engine speed is 350 revs/min, and screw rod is long
Diameter ratio is 40:1.
Table 1
Performance test
The polycarbonate that the formula of embodiment 1- embodiment 3 in above-mentioned table 1 and comparative example 1- comparative example 6 is obtained is compound
Material is tested for the property according to following test method, and last test result is as shown in table 2.
Embodiment 1 to implementation 3 and formula of the comparative example 1 into comparative example 6 is prepared into obtained polycarbonate composite wood
Material is molded into standard batten at a temperature of 280 DEG C after drying, and the test and characterization of performance are carried out according to following relevant criterion.It surveys
Strip part is 23 DEG C, 50% relative humidity.
A) melt index: ISO 1133；Test condition: 300 DEG C, 1.2kg；
B) Izod notched impact strength: ISO 180；
C) ball pressure test: IEC 60695-10-2；
D) CTI is tested: UL746；
E) flame-retardant test criteria: UL94, test bars size are as follows: 128mm*13mm*1.0mm and 150mm*150mm*
2.0mm；
Table 2
From table 1, table 2 it can be seen that the obtained polycarbonate composite material of embodiment 1-3 keep it is good it is heat-resisting,
While impact, mobility, 125 DEG C of ball pressures, the fire-protection rating of UL 1.0mm V0 and 2.0mm 5VA are had also achieved while met
And the technical goal of CTI PLC2 standard.Wherein, the use of nano barium sulfate in embodiments of the present invention, can be reduced in formula
The addition of titanium dioxide, the two act on simultaneously, so that polycarbonate composite material not only CTI with higher, but also greatly weaken
Titanium dioxide in the polycarbonate composite material to the masking power of color, so as to prepare dark or black product.And
The use of insulation carbon black influences the CTI of polycarbonate composite material smaller compared with ordinary carbon black.
Polycarbonate composite material of the embodiment of the present invention does not need in addition to add toughening using the fire retardant of silicon boron structure
Agent is also able to maintain good flame retardant property and impact strength in the case where high-content is mineral-filled.Sulfonates fire retardant meeting
The CTI of polycarbonate composite material is influenced, so that composite material is unable to reach CTI PLC2 grade, though and phosphate ester flame retardants
It is so helpful to the mobility and CTI that improve composite material, but be affected to the heat-resisting and impact of composite material；From table 2
Known to middle comparative example: the flame retardant effect of two kinds of fire retardants is unable to satisfy requirement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of polycarbonate composite material, which is characterized in that the polycarbonate composite material includes the group of following parts by weight
Point:
2. polycarbonate composite material as described in claim 1, which is characterized in that the polycarbonate is selected from copolymerization aromatic series
Polycarbonate or homopolymerization aromatic copolycarbonate；And/or
The viscosity average molecular weigh of the polycarbonate is 16000-33000；And/or
The melt index range of the polycarbonate is 2-60g/10min；And/or
The glass transition temperature of the polycarbonate is 145-150 DEG C.
3. polycarbonate composite material as described in claim 1, which is characterized in that the chemical structure of the silicon boron flame retardant
Contain following structural unit in formula:
Wherein, R1And R2For identical or different substituent group, and R1And R2In at least one be aryl.
4. polycarbonate composite material as described in claim 1, which is characterized in that the anti-dripping agent is selected from polytetrafluoroethylene (PTFE)
And/or modified polytetrafluoroethylene (PTFE).
5. polycarbonate composite material as described in claim 1, which is characterized in that the partial size of the barium sulfate is 30-
300nm；And/or
The partial size of the titanium dioxide is 150-300nm；And/or
The barium sulfate, which is selected from, carries out the modified barium sulfate in surface through aluminium oxide and/or polysiloxanes；And/or
The titanium dioxide, which is selected from, carries out the modified titanium dioxide in surface through aluminium oxide and/or polysiloxanes.
6. polycarbonate composite material a method as claimed in any one of claims 1 to 5, which is characterized in that the processing aid is selected from antioxygen
At least one of agent, release agent, light stabilizer, toner pigment and insulation carbon black.
7. polycarbonate composite material as claimed in claim 6, which is characterized in that the antioxidant is selected from phenolic antioxidant
And/or phosphite ester antioxidant；And/or
The release agent is selected from least one of four stearic acid isoamyl alcohol esters, paraffin and silane polymer；And/or
The light stabilizer is selected from least one of light stabilizer 5411, light stabilizer 234 and light stabilizer 531；And/or
The toner pigment is selected from least one of iron oxide red, cobalt blue and titan yellow；And/or
The primary partial size of the insulation carbon black is 20-25nm.
8. a kind of preparation method of polycarbonate composite material, which comprises the steps of:
According to ingredient contained by the described in any item polycarbonate composite materials of claim 1-7 and its content weigh respectively it is each at
Divide raw material；
By the polycarbonate, the silicon boron flame retardant, the anti-dripping agent, the barium sulfate, the titanium dioxide and institute
It states processing aid and carries out mixed processing, obtain mixed material；
The mixed material is put into double screw extruder, melt pelletization is carried out, obtains the polycarbonate composite material.
9. preparation method as claimed in claim 8, which is characterized in that the temperature parameter of the double screw extruder includes: one
200-220 DEG C of area's temperature, two 230-240 DEG C of area's temperature, three 245-265 DEG C of area's temperature, four 260-280 DEG C of area's temperature, five area's temperature
260-280 DEG C of degree, six 260-280 DEG C of area's temperature, seven 260-280 DEG C of area's temperature, eight 260-280 DEG C of area's temperature, die head temperature
255-285℃。
10. preparation method as claimed in claim 8, which is characterized in that the engine speed of the double screw extruder is 340-
350 revs/min, screw slenderness ratio 38-40:1.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113956644A (en) * | 2021-11-05 | 2022-01-21 | 疆合材料科技（苏州）有限公司 | Low-density halogen-free flame-retardant high-reflection polycarbonate composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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