CN105694416A - Glass fiber reinforced flame-retardant modified polycarbonate composite and preparation method thereof - Google Patents
Glass fiber reinforced flame-retardant modified polycarbonate composite and preparation method thereof Download PDFInfo
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- CN105694416A CN105694416A CN201610230156.8A CN201610230156A CN105694416A CN 105694416 A CN105694416 A CN 105694416A CN 201610230156 A CN201610230156 A CN 201610230156A CN 105694416 A CN105694416 A CN 105694416A
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- fire retardant
- polycarbonate composite
- modified polycarbonate
- fiberglass reinforced
- retardant modified
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention relates to a glass fiber reinforced flame-retardant modified polycarbonate composite and a preparation method thereof. The composite comprises, by mass, 80-90 parts of PC resin, 8-10 parts of short fiber, 3-5 parts of compatilizer, 0.5-2 parts of flame retardant, 0.3-0.5 part of anti-drip agent, 0.5-2 parts of antioxidant and 0.5-2 parts of lubricant. A lateral feeding device is modified, namely a lateral feeding device inlet usually selected for lateral feeding at a fourth area of a double-screw extruder is moved forward to a lower feeding port, for a raw material mixture, in front of a first area, so that the short fiber is cut and ground by screws for a longer distance from a discharging port, length-diameter ratio of glass fiber is smaller, and the glass fiber can be dispersed more uniformly; base-free short fiber is dispersed more uniformly in the composite, so that surface smoothness and processing fluidity of the polycarbonate composite can be improved effectively, and products with smooth and exquisite surfaces can be better processed.
Description
Technical field
The present invention relates to field of compound material, particularly relate to modified polycarbonate field of compound material, specifically refer to a kind of fiberglass reinforced fire retardant modified polycarbonate composite and preparation method thereof。
Background technology
In the modified PC material of common fiberglass reinforced fire retardant, owing to PC viscosity of material height ubiquity difficulty is processed, all can occur that when shaped article surface floating fiber, material flowability be poor, product surface has the bad phenomenon such as weld mark。Compare with the modified PC material of common fiberglass reinforced fire retardant, the fine and smooth bright and clean nothing of fiberglass reinforced fire retardant modified polycarbonate composite material surface floating fine, be easily worked, Impact Properties of Materials is excellent, assembling use procedure is not ftractureed weather resistance excellence。
In electronic apparatus, household electrical appliances industrial electrical equipment sector application, often modified PC material there is harsher requirement, while better physical and mechanical properties, high impact-resistant, good fluidity is easily worked the advantages such as mold filling, any surface finish, dimensionally stable, and the formula technique of the fiberglass reinforced fire retardant modified polycarbonate composite of our research and development and the repacking of side feeding well solve the rigors of real material application。
Summary of the invention
It is an object of the invention to the shortcoming overcoming above-mentioned prior art, it is provided that fiberglass reinforced fire retardant modified polycarbonate composite of a kind of fiberglass reinforced fire retardant modified polycarbonate composite and preparation method thereof。
To achieve these goals, fiberglass reinforced fire retardant modified polycarbonate composite of the present invention and preparation method thereof has following composition:
This fiberglass reinforced fire retardant modified polycarbonate composite, it is mainly characterized by, and described composite includes following quality
The raw material of number:
Preferably, described PC resin melting index is 10～15g/10min。
It is further preferred that described compatilizer is esters of acrylic acid compatilizer。
It is further preferred that described fire retardant is halogen-free flame retardants, brominated flame retardant or its two kinds of mixture。
Further preferably, described anti-dripping agent is the politef that cladding processes。
Again preferably, described antioxidant includes Hinered phenols antioxidant 1010 and the mixture of phosphite ester kind antioxidant 168。
Further, described antioxidant 1010 and the proportioning of irgasfos 168 are 1: 2, and by weight ratio: antioxidant 1010 is 0.1 part, irgasfos 168 is 0.2 part。
Most preferably, described lubricant include PETS, silicone powder or the mixture of two kinds。
A kind of preparation method of described fiberglass reinforced fire retardant modified polycarbonate composite, it is mainly characterized by, and described preparation method comprises the following steps:
Step (1): prepare raw material according to described nanocomposite constituents, raw material is put in high mixer, discharging after mixing；
Step (2): be placed in the main feed mouth of double screw extruder by the discharging in step (1), through melt extruding fiberglass reinforced fire retardant modified polycarbonate composite。
Preferably, described step (1) particularly as follows:
Viscous PC resin 80～90 parts in inciting somebody to action, short glass fiber 8～10 parts, compatilizer 3～5 parts, fire retardant 0.5～2 part, anti-dripping agent 0.3～0.5 part, discharging after mixing 2～5 minutes in high mixer put into by 0.5～2 part of antioxidant and lubricant 0.5～2 part。
Most preferably, described step (2) particularly as follows:
Being placed in the main feed mouth of double screw extruder by the discharging in step (1), 255～275 DEG C, screw speed is 360～400RPM, through melt extruding fiberglass reinforced fire retardant modified polycarbonate composite。
Have employed fiberglass reinforced fire retardant modified polycarbonate composite in this invention and preparation method thereof, it has the beneficial effects that:
1, by transforming side drawing-in device, the side drawing-in device entrance added is fed the 4th side, district being usually chosen in double screw extruder, move forward to the lower spout place of the raw mixture before the firstth district, make short glass fiber also from feed opening thus grinding through longer screw rod shearing, make glass draw ratio less, glass can spread more evenly across, alkali-free short glass fiber is dispersed better in the material, surface smooth finish and the processing fluidity of polycarbonate composite material can be effectively improved, thus being conducive to better processing the product that any surface finish is fine and smooth。
2, by adding U.S. 3M Sulfonates halogen-free flame retardants in PC material as fire retardant, addition little fire-retardant efficiently, with brominated flame retardant ratio, the impact property of polycarbonate composite material is affected less, thus being conducive to preparing the modified polycarbonate composite of high impact properties high rigidity, to improve materials'use life-span minimizing product fraction defective。
Detailed description of the invention
In order to more clearly describe the technology contents of the present invention, conduct further description below in conjunction with specific embodiment。
This fiberglass reinforced fire retardant modified polycarbonate composite, described composite includes the raw material of following mass fraction:
Wherein said raw material sources and effect are as follows:
Described PC resin melting index is 10～15g/10min, thus taking into account material flowability and impact property so that other compositions, auxiliary agent are uniformly dispersed better。
Described short glass fiber can be one or both mixture of megalith short glass fiber, Mount Taishan short glass fiber, and resin additive etc. is dispersed that the strength of materials, hardness and preferably heat resistance are greatly improved。
Described compatilizer is one or both mixture of the logical esters of acrylic acid compatilizer of ROHM AND HAAS MBS class, Shenyang section, make short glass fiber and various auxiliary agent and the better Dispersion Fusion of PC resin, reaching more prominent smooth finish surface and reduce surface floating fiber phenomenon, the addition of compatilizer simultaneously also improves the shock resistance improving integral material system and resistance to low temperature。
FR2025 halogen-free flame retardants that described fire retardant is U.S. 3M, one or both mixture of brominated flame retardant, so that the material modified system of PC obtains more excellent fire resistance, reach the grade of the fire-retardant V0 of 3.0mm of products application requirement。
Described anti-dripping agent is the ptfe micropowder auxiliary agent that cladding processes, there is mobility and the dispersibility of excellence, in PC material, fibrosis is high, it is possible to improve the melt strength of PC mixture, it is possible to make material light-off course prevent drippage thus reaching UL94V0 flame retardant rating。
Described antioxidant includes Hinered phenols antioxidant 1010 and the mixture of phosphite ester kind antioxidant 168, and described antioxidant 1010 and the proportioning of irgasfos 168 are 1: 2, and by weight ratio: antioxidant 1010 is 0.1 part, irgasfos 168 is 0.2 part。By antioxidant 1010 and irgasfos 168 being mixed as antioxidant and pressing above-mentioned weight it can be avoided that material is in the thermo-oxidative ageing phenomenon of the course of processing, do not affect Material Physics mechanical performance and normal use。
Described lubricant include PETS, silicone powder or the mixture of two kinds, by PETS, silicone powder are conducive to improving further the processing fluidity of PC material as lubricant, extrusion process reduces coefficient of friction and reduces screw torque, improve the dispersion mixing of each material in formula mixture simultaneously, also can reach to improve apparent effect。
The preparation method of described fiberglass reinforced fire retardant modified polycarbonate composite, comprises the following steps:
Step (1): viscous PC resin 80～90 parts in inciting somebody to action, short glass fiber 8～10 parts, compatilizer 3～5 parts, fire retardant 0.5～2 part, discharging after mixing 2～5 minutes in high mixer put into by anti-dripping agent 0.3～0.5 part, 0.5～2 part of antioxidant and lubricant 0.5～2 part；
Step (2): be placed in the main feed mouth of double screw extruder by the discharging in step (1), 255～275 DEG C, screw speed is 360～400RPM, through melt extruding fiberglass reinforced fire retardant modified polycarbonate composite。
Below embodiment is obtained according to above-mentioned raw materials:
Embodiment 1 (product promise exploitation formula)
Adopt the raw material of following weight:
By in after viscous PC resin, compatilizer, fire retardant, anti-dripping agent, antioxidant, lubricant put into according to above-mentioned mass parts and to mix 2～5 minutes in high mixer, then the material mixed is inserted in extruder by the main feed mouth of double screw extruder, alkali-free short glass fiber is added at raw material blanking mouth after the feeding transformation of side, eventually pass and melt extrude pelletize formation polycarbonate composite material, temperature in its whole granulation process should control at 255～275 DEG C, and screw speed controls at 360～400RPM。
Embodiment 2
Adopt the raw material of following weight:
By in after viscous PC resin, compatilizer, fire retardant, anti-dripping agent, antioxidant, lubricant put into according to above-mentioned mass parts and to mix 2～5 minutes in high mixer, then the material mixed is inserted in extruder by the main feed mouth of double screw extruder, machine barrel side, feeding double screw extruder the 5th district, side is fed and is added alkali-free short glass fiber, eventually pass and melt extrude pelletize formation polycarbonate composite material, temperature in its whole granulation process should control at 255～275 DEG C, and screw speed controls at 360～400RPM。
Embodiment 3
Adopt the raw material of following weight:
By in after viscous PC resin, compatilizer, fire retardant, anti-dripping agent, antioxidant, lubricant put into according to above-mentioned mass parts and to mix 2～5 minutes in high mixer, then the material mixed is inserted in extruder by the main feed mouth of double screw extruder, alkali-free short glass fiber is added at raw material blanking mouth after the feeding transformation of side, eventually pass and melt extrude pelletize formation polycarbonate composite material, temperature in its whole granulation process should control at 255～275 DEG C, and screw speed controls at 360～400RPM。
Embodiment 4 (general bromine system flame-retardant formulations system)
Adopt the raw material of following weight:
By in after viscous PC resin, compatilizer, fire retardant, anti-dripping agent, antioxidant, lubricant put into according to above-mentioned mass parts and to mix 2～5 minutes in high mixer, then the material mixed is inserted in extruder by the main feed mouth of double screw extruder, alkali-free short glass fiber is added at raw material blanking mouth after the feeding transformation of side, eventually pass and melt extrude pelletize formation polycarbonate composite material, temperature in its whole granulation process should control at 255～275 DEG C, and screw speed controls at 360～400RPM。
Embodiment 5
Adopt the raw material of following weight:
By in after viscous PC resin, compatilizer, fire retardant, anti-dripping agent, antioxidant, lubricant put into according to above-mentioned mass parts and to mix 2～5 minutes in high mixer, then the material mixed is inserted in extruder by the main feed mouth of double screw extruder, alkali-free short glass fiber is added at raw material blanking mouth after the feeding transformation of side, eventually pass and melt extrude pelletize formation polycarbonate composite material, temperature in its whole granulation process should control at 255～275 DEG C, and screw speed controls at 360～400RPM。
Fiberglass reinforced fire retardant modified polycarbonate composite obtained in embodiment 1 to embodiment 5 is apparent to such as table 1 by its material property of standard test, processing characteristics and product respectively:
Table 1: the properties table of embodiment 1～5 gained composite
Contrasted by material property surveyed in above-mentioned table, processability and product appearance, can be seen that short glass fiber is fed the polycarbonate composite material material comprehensive mechanical performance of device feed opening feeding, thermostability etc. through transformation side and is not decreased obviously, disclosure satisfy that material requirements, material flowability slightly improves simultaneously, materials processing product surface is good simultaneously, without substantially floating fibre；The logical esters of acrylic acid toughener contrast test embodiment 2,3,5 of compatilizer MBS-EXL2620 and Shenyang section, compatilizer adds can increase PC resin and glass in conjunction with the compatibility, thus increasing substantially Impact Properties of Materials and temperature tolerance, MBS-EXL2620 practical effect is better than the logical esters of acrylic acid toughener of Shenyang section。Through the transformation of side feeding equipment and formulation optimization, the fiberglass reinforced fire retardant modified polycarbonate composite of my company's research and development is when disclosure satisfy that client's material requirements above, can better solve the surface floating fiber phenomenon of materials processing performance and material, thus obtaining the better polycarbonate composite material of cost performance。
Have employed fiberglass reinforced fire retardant modified polycarbonate composite in this invention and preparation method thereof, it has the beneficial effects that:
1, by transforming side drawing-in device, the side drawing-in device entrance added is fed the 4th side, district being usually chosen in double screw extruder, move forward to the lower spout place of the raw mixture before the firstth district, make short glass fiber also from feed opening thus grinding through longer screw rod shearing, make glass draw ratio less, glass can spread more evenly across, alkali-free short glass fiber is dispersed better in the material, surface smooth finish and the processing fluidity of polycarbonate composite material can be effectively improved, thus being conducive to better processing the product that any surface finish is fine and smooth。
2, by adding U.S. 3M Sulfonates halogen-free flame retardants in PC material as fire retardant, addition little fire-retardant efficiently, with brominated flame retardant ratio, the impact property of polycarbonate composite material is affected less, thus being conducive to preparing the modified polycarbonate composite of high impact properties high rigidity, to improve materials'use life-span minimizing product fraction defective。
In this description, the present invention is described with reference to its specific embodiment。But it is clear that still may be made that various amendment and conversion are without departing from the spirit and scope of the present invention。Therefore, description is regarded in an illustrative, rather than a restrictive。
Claims (11)
1. a fiberglass reinforced fire retardant modified polycarbonate composite, it is characterised in that described composite includes the raw material of following mass fraction:
2. fiberglass reinforced fire retardant modified polycarbonate composite according to claim 1, it is characterised in that described PC resin melting index is 10～15g/10min。
3. fiberglass reinforced fire retardant modified polycarbonate composite according to claim 1, it is characterised in that described compatilizer is esters of acrylic acid compatilizer。
4. fiberglass reinforced fire retardant modified polycarbonate composite according to claim 1, it is characterised in that described fire retardant is halogen-free flame retardants, brominated flame retardant or its two kinds of mixture。
5. fiberglass reinforced fire retardant modified polycarbonate composite according to claim 1, it is characterised in that described anti-dripping agent is the politef that cladding processes。
6. alkali-free glass fibre enhancing modified PP composite material according to claim 1, it is characterised in that described antioxidant includes Hinered phenols antioxidant 1010 and the mixture of phosphite ester kind antioxidant 168。
7. fiberglass reinforced fire retardant modified polycarbonate composite according to claim 6, it is characterised in that described antioxidant 1010 and the proportioning of irgasfos 168 are 1: 2, by weight ratio: antioxidant 1010 is 0.1 part, irgasfos 168 is 0.2 part。
8. fiberglass reinforced fire retardant modified polycarbonate composite according to claim 1, it is characterised in that described lubricant include PETS, silicone powder or the mixture of two kinds。
9. the preparation method of fiberglass reinforced fire retardant modified polycarbonate composite according to claim 1, it is characterised in that described preparation method comprises the following steps:
Step (1): prepare raw material according to described nanocomposite constituents, raw material is put in high mixer, discharging after mixing；
Step (2): be placed in the main feed mouth of double screw extruder by the discharging in step (1), through melt extruding fiberglass reinforced fire retardant modified polycarbonate composite。
10. the preparation method of fiberglass reinforced fire retardant modified polycarbonate composite according to claim 9, it is characterised in that described step (1) particularly as follows:
Viscous PC resin 80～90 parts in inciting somebody to action, short glass fiber 8～10 parts, compatilizer 3～5 parts, fire retardant 0.5～2 part, anti-dripping agent 0.3～0.5 part, discharging after mixing 2～5 minutes in high mixer put into by 0.5～2 part of antioxidant and lubricant 0.5～2 part。
11. the preparation method of fiberglass reinforced fire retardant modified polycarbonate composite according to claim 9, it is characterised in that described step (2) particularly as follows:
Being placed in the main feed mouth of double screw extruder by the discharging in step (1), 255～275 DEG C, screw speed is 360～400RPM, through melt extruding fiberglass reinforced fire retardant modified polycarbonate composite。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109206875A (en) * | 2018-07-25 | 2019-01-15 | 天津金发新材料有限公司 | A kind of polycarbonate compositions and preparation method thereof |
| CN109251506A (en) * | 2018-08-23 | 2019-01-22 | 温州磐石机械设备维修咨询有限公司 | A kind of composite plastic and preparation method thereof with flame retardant effect |
| CN110591326A (en) * | 2019-10-17 | 2019-12-20 | 东莞市立晶塑胶有限公司 | Halogen-free flame-retardant water-resistant weather-resistant PC composite material and application thereof in electrical field |
| CN110698832A (en) * | 2019-10-17 | 2020-01-17 | 东莞市立晶塑胶有限公司 | Nano particle reinforced flame-retardant aging-resistant PC composite material and preparation method thereof |
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| CN102382440A (en) * | 2011-05-31 | 2012-03-21 | 深圳市科聚新材料有限公司 | Glass fiber reinforced flame-retardant polycarbonate material and preparation method thereof |
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| CN101469112A (en) * | 2007-12-24 | 2009-07-01 | 上海杰事杰新材料股份有限公司 | High tenacity halogen-free flame-retardant glass fiber reinforced polycarbonate composition |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109206875A (en) * | 2018-07-25 | 2019-01-15 | 天津金发新材料有限公司 | A kind of polycarbonate compositions and preparation method thereof |
| CN109251506A (en) * | 2018-08-23 | 2019-01-22 | 温州磐石机械设备维修咨询有限公司 | A kind of composite plastic and preparation method thereof with flame retardant effect |
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| CN110698832A (en) * | 2019-10-17 | 2020-01-17 | 东莞市立晶塑胶有限公司 | Nano particle reinforced flame-retardant aging-resistant PC composite material and preparation method thereof |
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