CN102719071B - Buckling deformation-resistant glass fiber reinforced polycarbonate resin and preparation method thereof - Google Patents
Buckling deformation-resistant glass fiber reinforced polycarbonate resin and preparation method thereof Download PDFInfo
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- CN102719071B CN102719071B CN201210222604.1A CN201210222604A CN102719071B CN 102719071 B CN102719071 B CN 102719071B CN 201210222604 A CN201210222604 A CN 201210222604A CN 102719071 B CN102719071 B CN 102719071B
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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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Abstract
The invention provides buckling deformation-resistant glass fiber reinforced polycarbonate resin. The buckling deformation-resistant glass fiber reinforced polycarbonate resin is prepared from the following raw materials in part by weight: 43 to 77 parts of polycarbonate, 3 to 7 parts of flexibilizer, 20 to 50 parts of glass fiber, and 0 to 2 parts of aid; and the glass fiber is short fiber of which the width diameter ratio is (2:1)-(6:1), and the length is 3 to 6mm. The invention also provides a preparation method for the buckling deformation-resistant glass fiber reinforced polycarbonate resin. The method comprises the following steps of: weighing raw materials in a weight ratio; mixing polycarbonate, flexibilizer, and aid in a mixer for 10 to 30 minutes; and feeding the mixed raw materials into a twin-screw extruder, performing side feeding of the glass fiber, performing melt extrusion, and pelleting. The buckling deformation-resistant glass fiber reinforced polycarbonate resin has the advantages that the added glass fiber is special-shaped glass fiber which is high in width diameter ratio, so that when melt flows, the orientation of the glass fiber is avoided; therefore, the shrinkage rates in the horizontal and longitudinal directions are consistent with each other, and the buckling performance of a final product is improved; the rigidity and the flowability are improved, and the glass fiber reinforced polycarbonate resin is excellent is comprehensive mechanical property; and raw materials have few varieties, so that materials can be selected conveniently, and the actual production and operation can be realized conveniently.
Description
Technical field
The present invention relates to modified polycarbonate resin, specifically, is glass fiber-reinforced polycarbonate resin of a kind of warpage-resistant and preparation method thereof.
Background technology
Polycarbonate (Polycarbonate, PC) chemistry by name 2, two (4-hydroxy phenyl) the propane polycarbonate of 2'-, are a kind of amorphism engineering plastics, have good resistance to impact shock, thermally-stabilised, glossiness, anti-bacteria characteristic, flame-retarding characteristic and resistance to crocking.Glass fiber-reinforced polycarbonate has improved mechanical property and the rigidity of polycarbonate, linear expansivity reduces greatly, dimensional stability improves greatly, molding shrinkage significantly reduces, overcome the not defect of stress crack resistant and fatigue strength of polycarbonate simultaneously, can be used for substitution of Al, the load part in the die casting fields such as zinc and the high goods of dimensional requirement, be widely used in machinery, instrument, electric, in the Industrial products such as telecommunication, for example manufacture electric power tool shell, robot calculator part, airplane parts, cosmonaut's helmet, attachments of a bicycle and other are to rigidity, dimensional stabilizing, the shock-resistant component that have higher requirements.
Because glass fiber-reinforced polycarbonate resin material is used for the precise parts such as electronic apparatus, thus high to dimensional requirement.But the glass that traditional glass fiber-reinforced polycarbonate resin uses is mostly circular glass, when shortcoming is melt flow, glass can be orientated by streamwise, and result causes horizontal stroke, longitudinal contraction rate inconsistent, and buckling deformation easily occurs end article.
Chinese patent literature CN 201110240992.1, date of publication on November 23rd, 2011, discloses a kind of anti-warpage reinforced polypropylene compound material and preparation method thereof, and described material comprises the component of following weight proportion: polypropylene PP 53-89%, low orientation glass 5-30%, compatilizer 5-15%, thermo-stabilizer DSTP 0.1-1%, antioxidant 3114 0.1-1.0%, oxidation inhibitor 619 0.1-1.0%, wherein, low orientation glass is that cross section is oval common glass, has improved the anti-warping characteristic of material.
Chinese patent literature CN 200910197243.8, date of publication on July 28th, 2010, disclose a kind of low warping high surface gloss glass fiber reinforced polyester composite material and preparation method, this matrix material comprises following component (wt%): polycarbonate 10-35%, polybutylene terephthalate 20-45%, toughner 1-10%, kaolin 3-10%, glass fibre 15-38%; Oxidation inhibitor 0.1-1%, ester exchange inhibitor 0.1-0.5%, processing aid 0.1-3%, after getting the raw materials ready by component, utilize silane coupling agent to process kaolin, then raw material is put into high-speed mixer and mixing 2-5min, mixture is put into screw machine extruding pelletization, it is reinforced that while glass fibre takes side to feed again, and the rotating speed of screw machine is 180-600rpm, temperature is 240-280 DEG C, obtains product.This invention can obtain having high-surface gloss, good comprehensive mechanical property, and the product of dimensional stabilizing, especially ensures that product is injection molded into the low warpage properties energy after goods.But this invention is mainly by adding amorphous polymer to reduce degree of crystallinity in polymer blend, reduce the ununiform shrinkage causing because of crystallization, utilize the micro-sheet structure of kaolinic porous, effectively alleviate glass fibre and be orientated the anisotropy causing, thereby play effect of low warpage, therefore feed composition is many, and material produce process is loaded down with trivial details.
Chinese patent literature CN 200910038068.8, March 20 2009 applying date, a kind of anti-warp is disclosed, comprise the component of following weight percent: polycarbonate resin 30～89.5%, copolymer polyester resin 5～20%, alkali free glass fibre 5～40%, surplus is auxiliary agent.Said composition is by adding appropriate copolyester, the Injection Molding of material and interface compatibility and the adhesive power of glass and base material are improved, the internal stress and the glass fibre that have reduced thin wall parts or complex structure product expose, thereby material, have obviously improved warpage and the appearance of product.This invention need to be used copolyester material, has increased feed composition, is unfavorable for actual production operation.
Chinese patent literature CN 03113958.2, March 20 2003 applying date, the anti-warpage highly effective flame-retardant of a kind of environment-friendly type reinforced polycarbonate resin is disclosed, contain 100 parts of (being below parts by weight) polycarbonate resins, 0.2～1.0 part of fire retardant, 10～50 parts, the glass fibre of complex treatment, 1～5 part of processing aid.This invention is in the time being used strongthener glass fibre, utilize short glass fiber, mealy glass fibre and the sheet-like fiber complex treatment of different thicknesses, different length-to-diameter ratios, make the distribution of glass fibre in modified resin be ultralow anisotropy, reach the effect of anti-warpage and dimensional stabilizing.But this enhancing glass is the composition of multiple glass, is not easy to selection.
Therefore, need a kind of material component badly less, be convenient to the glass fiber-reinforced polycarbonate resin of the warpage-resistant of selection and production operation.
Summary of the invention
The object of the invention is for deficiency of the prior art, a kind of glass fiber-reinforced polycarbonate resin of warpage-resistant is provided.
One object more of the present invention is that a kind of preparation method of glass fiber-reinforced polycarbonate resin of warpage-resistant is provided.
For achieving the above object, the technical scheme that the present invention takes is:
A glass fiber-reinforced polycarbonate resin for warpage-resistant, it is to be made up of the raw material of following weight part:
Polycarbonate 43-77 part
Toughner 3-7 part
Glass 20-50 part
Auxiliary agent 0-2 part,
Described glass is that width-diameter ratio is 2: 1-6: 1, and the staple fibre of length 3-6mm.
The weight-average molecular weight of described polycarbonate is 18000-25000.
Described polycarbonate is aliphatics or aromatic copolycarbonate.
Described polycarbonate is aromatic copolycarbonate.
Described polycarbonate is bisphenol A polycarbonate.
Described toughner is butadiene-styrene-methylmethacrylate copolymer.
Described auxiliary agent is selected from one or more in oxidation inhibitor, internal lubricant, demoulding chaste tree, static inhibitor, stablizer, dyestuff and pigment.
For realizing above-mentioned second object, the technical scheme that the present invention takes is:
The preparation method of the glass fiber-reinforced polycarbonate resin of warpage-resistant as above, described method comprises the following steps:
(1) weight part ratio takes raw material as described above;
(2) polycarbonate, toughner and other component are mixed to 10-30min in mixing tank;
(3) above-mentioned mixed raw material is thrown in twin screw extruder, glass side is fed, and melt extrudes granulation.
Described twin screw extruder comprises ten temperature controlled region, the temperature in described temperature control 1-2 district is 200-280 DEG C, and the temperature in temperature control 3-4 district is 200-280 DEG C, and the temperature in temperature control 5-6 district is 200-280 DEG C, the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
Described twin screw extruder has two to vacuumize place, and one of them place of vacuumizing is positioned at the end of material conveying section, the starting end of melt zone; Another place of vacuumizing is positioned at metering zone.
The invention has the advantages that:
1, glass fiber-reinforced polycarbonate resin of the present invention, the glass adding is not traditional circular glass, but there is the special-shaped glass of high width-diameter ratio, thereby when melt flow, can not cause the orientation of glass, thereby horizontal, longitudinal contraction rate is consistent, has improved the warpage performance of end article, dimensional stabilizing;
2, the rigidity of glass fiber-reinforced polycarbonate resin of the present invention, mobility increase to some extent, comprehensive mechanical property excellence;
3, glass fiber-reinforced polycarbonate resinogen material category of the present invention is less, is convenient to selection and actual production operation.
Comprehensive above advantage is known, and glass fiber-reinforced polycarbonate resin of the present invention has broad application prospects in the field such as mobile phone and electronic apparatus.
Embodiment
Below embodiment provided by the invention is elaborated.
In the present invention, the described preferred 18000-25000 of PC weight-average molecular weight, can be aliphatics, can be also aromatic series, all can obtain good mechanical property, especially preferably bisphenol A polycarbonate.Described bisphenol A polycarbonate formal name used at school is two (4 '-hydroxy phenyl) the propane polycarbonate of 2,2-, has good heat, electricity and the over-all properties such as mechanical, and particularly shock-resistant, good toughness, creep are little, and product size is stablized.It is all passable that described PC adopts phosgenation or ester-interchange method to produce, and performance difference is little.
The preferred width-diameter ratio of described glass is 2: 1-6: 1, the staple fibre of length 3-6mm can not cause the orientation of glass in the time of melt flow, thereby horizontal stroke, longitudinal contraction rate are consistent in the time of material injection moulding, can improve the warpage performance of resin of the present invention, ensure dimensional stabilizing.
Described toughner can increase shock strength and the unit elongation of resin of the present invention, preferably butadiene-styrene-methylmethacrylate copolymer, but be not limited only to this, also can select acrylonitrile-butadiene-styrene copolymer, styrene butadiene thermoplasticelastomer, ethylene-vinyl acetate copolymer etc.
Described internal lubricant comprises Solsperse 2000, stearic amide, stearic acid butyl ester and glyceryl monostearate etc.
Described releasing agent is to be used in two interface coatings that are easy to each other the body surface of adhesion, and it can improve resin surface smooth finish of the present invention, can select siloxanes, paraffin, polyethylene wax, talcum powder etc.
Described static inhibitor can make the surperficial affinity moisture of resin of the present invention.
Described stablizer can ensure that PC resin photothermal decomposition does not occur in high temperature process process and later environment for use as far as possible, can increase the stability of resin of the present invention.
The preferred oil loving dispersed dye of described dyestuff.
Described pigment uses common plastics pigment, as titanium dioxide, chrome yellow, titanium nickel yellow, carbon black etc.
In following embodiment, PC trade mark PC-300-15, LG chemical company produces, and weight-average molecular weight is 23000; Glass trade mark CSG 3PA-830, Dong Fang group company produces, and specification is width-diameter ratio 4: 1, diameter 7 μ m, width 28 μ m, the short fiber of length 3mm; The glass trade mark 3786, PPG company produces, and specification is the circular short fiber of diameter 10 μ m, length 4.5mm; Static inhibitor trade mark HS-1, perseverance is encouraged plastic material (Dongguan) company limited and is produced; Static inhibitor trade mark YF118, perseverance is encouraged plastic material (Dongguan) company limited and is produced; Stablizer trade mark Themstab S220, Dongguan City three closes Chemical Co., Ltd. and produces; Stablizer trade mark 4050H, is purchased from Ningbo Hai Shu Yong Shen trade Co., Ltd; Dyestuff oil red HRR(solvent red 23), C.I. call number Solvent Red(HRR23), be purchased from Wenzhou Mei Ernuo Chemical Co., Ltd.; Pigment titanium white is purchased from Dongguan new brightness plastic pigment Se Mu factory.
embodiment 1 glass fiber-reinforced polycarbonate resin of the present invention standby (one)
(1) weigh 43 parts of each raw material: PC-300-15 by following weight part ratio, 7 parts of toughner EXL2678,50 parts of glass CSG 3PA-830,0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.2 part of internal lubricant PETS;
(2) above each raw material (not comprising glass) is mixed to 20min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
embodiment 2 glass fiber-reinforced polycarbonate resin of the present invention standby (two)
(1) weigh 77 parts of each raw material: PC-300-15 by following weight part ratio, 3 parts of toughner EXL2678,20 parts of glass CSG 3PA-830,0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.2 part of internal lubricant PETS;
(2) above each raw material (not comprising glass) is mixed to 20min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
embodiment 3 glass fiber-reinforced polycarbonate resin of the present invention standby (three)
(1) weigh each raw material by following weight part ratio: 60 parts of poly-ethylidene carbonic ethers (weight-average molecular weight 18000), 5 parts of toughner EXL2678, glass (width-diameter ratio 2: 1, length 6mm) 35 parts, 0.5 part of antioxidant 1010,0.5 part of irgasfos 168,0.5 part of internal lubricant PETS, 0.5 part of releasing agent Ployethylene Wax;
(2) above each raw material (not comprising glass) is mixed to 10min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
embodiment 4 glass fiber-reinforced polycarbonate resin of the present invention standby (four)
(1) weigh each raw material by following weight part ratio: 43 parts of bisphenol-a polycarbonates (weight-average molecular weight 25000), 6 parts of toughner EXL2678, glass (width-diameter ratio 6: 1, length 4.5mm) 50 parts, 0.1 part of antioxidant 1010,0.1 part of irgasfos 168,0.1 part of internal lubricant PETS, 0.1 part of static inhibitor HS-1,0.1 part of stabilizer T hemstab S220;
(2) above each raw material (not comprising glass) is mixed to 15min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
embodiment 5 glass fiber-reinforced polycarbonate resin of the present invention standby (five)
(1) weigh 77 parts of each raw material: PC-300-15 by following weight part ratio, 4 parts of toughner EXL2678, glass (width-diameter ratio 6: 1, length 4.5mm) 20 parts, 0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.4 part of internal lubricant PETS, 0.3 part of dyestuff oil red HRR;
(2) above each raw material (not comprising glass) is mixed to 25min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
embodiment 6 glass fiber-reinforced polycarbonate resin of the present invention standby (six)
(1) weigh each raw material by following weight part ratio: 50 parts of bisphenol-a polycarbonates (weight-average molecular weight 20000), 7 parts of toughner EXL2678,25 parts of glass CSG 3PA-830,0.2 part of antioxidant 1010,0.2 part of irgasfos 168,0.2 part of internal lubricant PETS, 0.2 part of stabilizer T hemstab S220,0.2 part of pigment titanium white;
(2) above each raw material (not comprising glass) is mixed to 30min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
embodiment 7 glass fiber-reinforced polycarbonate resin of the present invention standby (seven)
(1) weigh 77 parts of each raw material: PC-300-15 by following weight part ratio, 7 parts of toughner EXL2678,50 parts of glass CSG 3PA-830,0.2 part of antioxidant 1010,0.2 part of irgasfos 168,0.2 part of internal lubricant PETS, 0.5 part, releasing agent paraffin, 0.5 part of static inhibitor YF118,0.1 part of pigment titanium white;
(2) above each raw material (not comprising glass) is mixed to 20min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
embodiment 8 glass fiber-reinforced polycarbonate resin of the present invention standby (eight)
(1) weigh 43 parts of each raw material: PC-300-15 by following weight part ratio, 3 parts of toughner EXL2678,30 parts of glass CSG 3PA-830,0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.5 part of internal lubricant PETS, 0.1 part of stablizer 4050H;
(2) above each raw material (not comprising glass) is mixed to 20min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
comparative example 1
(1) weigh 43 parts of each raw material: PC-300-15 by following weight part ratio, 3 parts of toughner EXL2678,3,786 30 parts of glasses, 0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.5 part of internal lubricant PETS, 0.1 part of stablizer 4050H;
(2) above each raw material (not comprising glass) is mixed to 20min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
comparative example 2
(1) weigh 77 parts of each raw material: PC-300-15 by following weight part ratio, 3 parts of toughner EXL2678,3,786 20 parts of glasses, 0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.2 part of internal lubricant PETS;
(2) above each raw material (not comprising glass) is mixed to 20min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
comparative example 3
(1) weigh each raw material by following weight part ratio: 60 parts of poly-ethylidene carbonic ethers (weight-average molecular weight 18000), 5 parts of toughner EXL2678, glass (width-diameter ratio 1: 1, length 6mm) 35 parts, 0.5 part of antioxidant 1010,0.5 part of irgasfos 168,0.5 part of internal lubricant PETS, 0.5 part of releasing agent Ployethylene Wax;
(2) above each raw material (not comprising glass) is mixed to 10min in moderate-speed mixers;
(3) the above-mentioned raw material mixing is thrown in melt temperature is the twin screw extruder of 200-280 DEG C, glass side is fed, melt extrude, granulation, wherein the each district of twin screw extruder temperature is: the temperature in 1-2 district is 200-280 DEG C, the temperature in 3-4 district is 200-280 DEG C, the temperature in 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
embodiment 9 performance tests
The glass fiber-reinforced polycarbonate resin that embodiment 1-3 and comparative example 1-3 are produced is pressed ASTM standard, is injection molded into batten, and injection temperature is 120 DEG C of 310 DEG C, mould temperature, test bars performance.Test result is as shown in table 1.
The each glass fiber-reinforced polycarbonate resin property of table 1 test result
Remarks: Elongation test condition is 5mm/min, crooked test condition is 1.3mm/min, melting index test condition is 300 DEG C of * 1.2Kg; Warpage properties, ★ is more, is out of shape more serious.
As shown in Table 1, resin of the present invention is owing to having used special-shaped glass, and rigidity, mobility increase to some extent, and impact property reduces slightly, but the improvement of resistance to warpage properties significantly, not yielding; From relatively it can also be seen that of embodiment 3 and comparative example 3, use the width-diameter ratio special-shaped glass of 1: 1, the warpage performance of resin can significantly decline, and shows that good warpage properties depends on the special-shaped glass of specific width-diameter ratio.
Resin prepared by above embodiment 4-8 is through performance test, and experimental result shows that it has good resistance to warpage properties equally, dimensional stabilizing, and rigidity, mobility increase to some extent simultaneously, comprehensive mechanical property excellence.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the inventive method; can also make some improvement and supplement, these improvement and the supplementary protection scope of the present invention that also should be considered as.
Claims (4)
1. a glass fiber-reinforced polycarbonate resin for warpage-resistant, is characterized in that, it is to be made up of the raw material of following weight part:
43 parts of PC-300-15
7 parts of toughner EXL2678
50 parts of glass CSG 3PA-830
0.1 part of antioxidant 1010
0.2 part of irgasfos 168
0.2 part of internal lubricant PETS,
Described glass is that width-diameter ratio is 4: 1, diameter 7 μ m, width 28 μ m, the staple fibre of length 3mm.
2. the preparation method of the glass fiber-reinforced polycarbonate resin of warpage-resistant as claimed in claim 1, is characterized in that, described method comprises the following steps:
(1) take raw material according to weight part ratio claimed in claim 1;
(2) PC-300-15, toughner EXL2678, antioxidant 1010, irgasfos 168 and internal lubricant PETS are mixed to 20min in mixing tank;
(3) above-mentioned mixed raw material is thrown in twin screw extruder, glass side is fed, and melt extrudes granulation.
3. preparation method according to claim 2, it is characterized in that, described twin screw extruder comprises ten temperature controlled region, the temperature in described temperature control 1-2 district is 200-280 DEG C, the temperature in temperature control 3-4 district is 200-280 DEG C, the temperature in temperature control 5-6 district is 200-280 DEG C, and the temperature in temperature control 7-8 district is 200-280 DEG C, and the temperature in temperature control 9-10 district is 200-280 DEG C.
4. preparation method according to claim 2, is characterized in that, described twin screw extruder has two to vacuumize place, and one of them place of vacuumizing is positioned at the end of material conveying section, the starting end of melt zone; Another place of vacuumizing is positioned at metering zone.
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| CN104371293B (en) * | 2013-08-13 | 2016-06-01 | 广东宝塑科技有限公司 | A kind of glass fibre toughen and intensify polycarbonate composite material and preparation method |
| CN104109368A (en) * | 2014-08-12 | 2014-10-22 | 苏州卓越工程塑料有限公司 | Reinforced modified polycarbonate material |
| CN104497523A (en) * | 2014-11-26 | 2015-04-08 | 苏州新区佳合塑胶有限公司 | Composite material used for automobile tailgates |
| CN105131549B (en) * | 2015-08-28 | 2016-11-09 | 金发科技股份有限公司 | A kind of polycarbonate compositions and preparation method thereof |
| CN115216144B (en) * | 2021-04-16 | 2024-02-20 | 深圳科创新源新材料股份有限公司 | Modified PA66 material and preparation method and application thereof |
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| US8859665B2 (en) * | 2006-12-05 | 2014-10-14 | E I Du Pont De Nemours And Company | Polyamide housings for portable electronic devices |
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| CN101665620A (en) * | 2008-09-04 | 2010-03-10 | 帝人化成株式会社 | Lens barrel made from glass fiber reinforced flame retardant resin composition |
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