CN104559110B - PC/PET (polycarbonate/polyethylene terephthalate) alloy material and preparation method thereof - Google Patents
PC/PET (polycarbonate/polyethylene terephthalate) alloy material and preparation method thereof Download PDFInfo
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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
- B29C48/92—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- C—CHEMISTRY; METALLURGY
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a PC/PET (polycarbonate/polyethylene terephthalate) alloy material which has low shrinkage and is easy to coat. The PC/PET alloy material comprises components in percentage by weight as follows: 30%-60% of PC, 15%-35% of PET, 15%-20% of acrylonitrile-butadiene-styrene, 10%-25% of inorganic filler, 1%-10% of a toughening agent, 0.1%-1% of a chain extender and 0.2%-4% of an assistant. According to the PC/PET alloy material, specific quantities of the components are combined to produce ideal synergistic effect, so that the alloy material not only has excellent comprehensive mechanical property, but also has ultra-low shrinkage rate, a product does not require polishing processing, primer coating can be directly avoided, and the coating cost is saved. The invention discloses a preparation method of the PC/PET alloy material. According to the preparation method, the preparation can be realized by adopting conventional equipment, namely a double-screw extruder, and through control of feeding position and temperature, the preparation is simple and easy to control.
Description
Technical field
The present invention relates to polycarbonate/polyethylene terephthalate field, be specifically related to a kind of low receipts
Contract polycarbonate/polyethylene terephthalate of easy application and preparation method thereof.
Background technology
Merlon/polyethylene terephthalate (PC/PET) alloy had both remained the processing fluidity of PET, resistance to molten
Agent, has again dimensional stability and the high tenacity of PC, is used widely in fields such as electronic connector, automobile interior exterior decorations.
Increasing along with PET content in PC/PET alloy, shrinkage factor increases, and solvent resistance improves.In practical application in industry, particularly
For heavy wall, need sprayed product, require moulded products not reprint books in a reduce format such as automobile door handle, casing of rearview mirror, central control panel etc.,
Easily application, PASS to be got well, and to be can guarantee that goods will not occur Cracking Failure in use process.General PC/ABS, PC/
Although PET alloy resin shrinkage rate is the lowest, but the goods heavy wall position for molding still suffers from substantially reprinting books in a reduce format, and affects goods
Outward appearance；And glass fiber reinforced materials can reduce contractibility, eliminate molding and reprint books in a reduce format, but product surface is floating fine serious, after needs
Phase manual polishing primer spray ability application, process costs is greatly increased.It is thus desirable to a ultralow shrinkage factor, goods are without reprinting books in a reduce format
And smooth appearance, without priming paint, the alloy material of direct spraying.Patent about PC alloy is a lot of at present, but for lower shrinkage
Rate, PC/PET alloy material of easy application and preparation method thereof have not been reported.
About the preparation of polycarbonate/polyethylene terephthalate, there are many patent documentations both at home and abroad
Problem and the alloy of discussing material compatibility are fire-retardant, the modification technology in terms of enhancing.
The Chinese invention patent application of application publication number CN 1699468A (Application No. 200510026716.X) discloses
A kind of polycarbonate/acrylonitrile-butadiene-styrene ternary copolymerized resin ABS/ polybutylene terephthalate (PBT) PBT closes
Gold copper-base alloy, its composition is by weight percentage: PC 40%-70%, ABS 40%-70%, PBT 5%-10%, bulking agent
3%-10%, antioxidant 0.2%-2.0%, use the maleic anhydride grafted ABS of high level as compatilizer, solve resin with
The problem that metal insert adhesion strength is not enough, and the shrinkage factor of this system is suitable with common PC alloy shrinkage rate, it is impossible to solve system
The problem reprinted books in a reduce format at product wall thickness.
Application publication number is that CN 103819887A (application number 201210464173.X) relates to a kind of high rigidity high-fire resistance
PC/PET alloy material and preparation method thereof, this alloy material is made up of the component including following weight portion: polycarbonate resin
500～750 parts, pet resin 10～210 parts, wollastonite in powder 60～140 parts, wollastonite fibre 60～
140 parts, toughener 20～80 parts, dispersant 0.5～5 parts, antioxidant 1～8 parts, lubricant 1～8 parts；Above-mentioned raw materials is through at a high speed
Mixing and extruding pelletization prepare high rigidity high-fire resistance PC/PET alloy material pellet.This invention uses 10%～21%
PET resin, uses about 20% wollastonite in powder and fiber composite to fill, although preparing material have higher stretching, bending strength
And heat resistance, the impact flexibility at material has been sacrificed, thus has been had certain limitation in the application.In this patent the most not
Relate to Material shrinkage rate and application problem of spraying paint, and system is not added with ABS component, need in terms of spraying effect into one
Step improves.
Summary of the invention
The invention provides the polycarbonate/polyethylene terephthalate of the easy application of a kind of lower shrinkage,
Preferable synergism is produced so that it is there is ultralow shrinkage factor and there is relatively high-ductility by the combination under certain content of each component
Property, and can carry out exempting from primer painting, reach perfect effect, excellent combination property.
A kind of polycarbonate/polyethylene terephthalate (i.e. Merlon of the easy application of lower shrinkage/poly-
Ethylene glycol terephthalate alloy material), it is made up of the component of following weight percentage:
As preferably, described polycarbonate/polyethylene terephthalate, following weight percent contain
The component composition of amount:
Further preferably, described polycarbonate/polyethylene terephthalate, by following weight percent
The component composition of content:
Described toughener is two kinds in MBS toughener, EMA toughener, and described MBS toughener is with polystyrene
With methacrylate be shell, butadiene be the anti-impact modifier of the nucleocapsid structure of core, described EMA toughener be ethylene-
Acrylic acid methyl ester .-glycidyl methacrylate terpolymer toughener；
With weight, the content of MBS toughener is 1%～3%, and the content of EMA toughener is 2%～3%.
Through substantial amounts of research experiment, for PC/PET alloy system, when PET content is more than more than 10%, system resistance to
Solvent craze performance is just higher than pure PC resin, and ester exchange can occur in the molten state due to PC Yu PET during less than 10%
Reaction, causes the molecular weight of resin to reduce, makes the solvent resistant cracking performance of alloy system be deteriorated on the contrary.But, PC and PET ester is handed over
The product changed plays compatibilization as compatilizer so that alloy system has the mechanical property of excellence.Therefore, suitably control
The ester exchange degree of PC/PET alloy system, and improve the content of PET, select the polyethylene terephthalate of 15%～35%
It is that the present invention one of to achieve the goal that ester ensure that alloy has good solvent resistant cracking performance.
The shrinkage factor of PC/PET alloy is the most closely related with PET content, the molding shrinkage 0.6%-0.7% of PC resin,
The molding shrinkage 2.0%-2.5% of PET resin, when PET content is less than 10%, owing to the ester exchange between PC/PET is anti-
Should, causing and system exists bigger noncrystalline unformed phase, the shrinkage factor of solid system is suitable with PC, when PET content exceedes
After 10%, PET forms crystal aggregation state in system, causes the shrinkage factor of system to be more than PC resin, and PET content is more
Height, alloy system shrinkage factor is the biggest.Inorganic filler is the most effective means improving alloy system shrinkage factor, adds certain proportion i.e.
Can effectively regulate the molding shrinkage of product.But major part inorganic filler is poor with the compatibility of Merlon, particularly with
The filler of alkaline matter, in the mixing preparation process of alloy molten, can cause the fast degradation of Merlon, cause the tough of system
Property is substantially reduced, and heat-proof aging temperature is also greatly lowered.During post-production, slightly stop in injection machine and oxygen just occurs
Change degraded, cause products appearance defect and performance to reduce.Owing to the alloy material of the present invention may be used for exempting from the system of spraying paint of primary coat
Product, it is desirable to after molding, product surface is bright and clean and without reprinting books in a reduce format, therefore the present invention carried out in the selection of filler and application aspect special
Design.
The product of the present invention can apply to the goods that spray paint, it is not necessary to priming paint, direct spraying colored paint and finish paint, it is desirable to paints attached
Put forth effort comparison high.The application although general PC/PET alloy can spray paint, but the benzene in PC poor solvent resistance, with paint, diformazan
Easily there is stress cracking in the contact of benzene equal solvent, PET adds the resistance to dissolubility of system, but PASS is by certain shadow
Ring.The present invention introduces excellent ABS resin of spraying paint, the problem that can efficiently solve PASS.And ABS resin
Shrinkage factor 0.5-0.6%, affects less on the shrinkage factor of system, and ABS has good anti-stress cracking ability, can be further
Improve the stress crack resistance performance of alloy system.
As preferably, described Merlon, for the PC resin of middle viscosity grade, melt index MI8-20g/10min, survey
Strip part: 300 DEG C, 1.2kg.Merlon/polyethylene terephthalate according to the lower shrinkage easy application of high tenacity lower shrinkage
The PC of the viscosity that the dissimilar selection of ester alloy material is different, further preferred melt index MI is 10g/10min, Korea S
LG, PC 1201-10.
Polyethylene terephthalate (PET) is a kind of semicrystalline polymeric, and under molten condition, mobility is very
Good, to improving, PC processability is helpful.The present invention selects PET resin intrinsic viscosity [η] to be 0.5-1.2dl/g, [η] test strip
Part: using the phenol of volume ratio 1:1 and sym-tetrachloroethane is solvent, and further preferably [η] is 0.8dl/g, as used Shanghai far to spin
The product of PET CB602.PC and PET is susceptible to ester exchange reaction in the molten state, and appropriate ester exchange offspring can rise
To PC and the effect of PET alloy bulking agent, but ester exchange reaction is excessive, causes molecular resin amount to reduce, can weaken the machine of system
Tool performance and solvent resistance.Therefore, the ester exchange reaction between moderate control polyester is wanted when preparing this alloy material, at body
System introduces chain extender and can be effectively improved the material degradation effect that ester exchange reaction causes.
PC, PET, in course of processing Middle molecule chain interruption, produce active group COOH, Ph-OH, R-OH, expand even in the present invention
Agent is the compound containing epoxide group or the compound containing oxazoline group, again can couple with these end groups, shape
Become branched polymer, improve the molecular weight of resin, keep the performance of resin.Described expansion connects agent can use BASF ADR4370S
Product, Japan catalyst RPS 1005 [i.e. (2-isopropenyl-2-oxazoline)-styrol copolymer] product.Chain extender contains
Having multiple epoxy-functional and oxazoline functional group, the end carboxyl and the terminal hydroxy group that produce with PC and PET ester exchange reaction are carried out
Reaction, with chain extender as node, makes the strand of degradative resin again couple, and keeps higher molecular weight, thus ensures that material has
There are good physical and mechanical properties and heat aging property.
Described acrylic nitrile-butadiene-styrene is graft copolymer, can use commercially available prod.
Introducing inorganic filler in the present invention and improve the molding shrinkage of material, described inorganic filler is in mineral, whisker
One or both, described mineral can select Pulvis Talci, barium sulfate, and in glass microballoon etc., one or more, described
Whisker can select potassium titanate crystal whisker, in aluminium borate whisker, silicon dioxide whisker etc. one or more, the major diameter of whisker
Ratio 2-20:1, improves effect to shrinkage factor obvious.Further preferably, described inorganic filler is Pulvis Talci and titanium dioxide silicon wafer
Palpus.Owing to inorganic filler is poor with resin compatible, thus mineral carry out surface process before use, improve mineral and resin
Interface compatibility.Containing alkaline matter in many inorganic fillers, when melted, cause the degraded of Merlon, therefore in the present invention
In, on the one hand the most first inorganic filler is made master batch with PET and ABS resin, then carry out melt blending with the component such as PC；The opposing party
Face adds chain extender, makes Partial digestion strand be attached by the group of chain extender, makes molecular resin amount reduce and controls
In certain scope, thus ensure that the heat decomposition temperature of alloy system is in a higher level.
After PC/PET alloy mineral is filled, toughness is greatly lowered, and impact strength, elongation at break all only has non-reinforcing material
About the 1/10 of material, in use material is the most crisp, and goods are easily broken off.Described toughener is MBS toughener, EMA increasing
One or both in tough dose, described MBS toughener be with polystyrene and methacrylate as shell, butadiene is as core
The anti-impact modifier of nucleocapsid structure, described EMA toughener is ethylene-methyl acrylate-glyceryl methacrylate
Terpolymer toughener.MBS toughener and EMA toughener all can use commercially available prod, and wherein, MBS toughener of the present invention can
Use the product of ROHM AND HAAS EXL 2620, the product of middle deep pool M701.EMA toughener use EMA Du Pont AC 1125 product or
Use the product of Exxon Mobil TC 110.With weight, the content of MBS toughener is 1%～5%, and EMA is toughness reinforcing
The content of agent is 1%～3%.
Present invention introduces two class toughener, polystyrene and methacrylate is shell, and butadiene is the nucleocapsid of rubbery kernel
The anti-impact modifier MBS of structure, improves the impact flexibility of PC/PET alloy；Add ethylene-methyl acrylate-methacrylic acid
Ethylene oxidic ester terpolymer toughener EMA, has the most compatible containing epoxy-functional with PET, PC and inorganic mineral
Property, impact strength and elongation at break to system improve significantly.
In the present invention, described auxiliary agent is antioxidant and lubricant, and with weight, the content of antioxidant is
0.1%～2%, the content of lubricant is 0.1%～2%；Further preferably, the content of antioxidant is 0.2%～0.5%, profit
The content of lubrication prescription is 0.2%～0.5%.
Described antioxidant is that Hinered phenols antioxidant (such as antioxidant 1076), phosphite ester kind antioxidant are (such as antioxidant
168) one or both in, specifically can be selected for antioxidant 1076 and antioxidant that irgasfos 168 weight ratio 1:1 is mixed to get.
Described lubricant is one or both in polyol ester series lubricant agent, silicone lubricant, such as PETS (season
Penta tetrol stearate), 1170-002.
The preparation method of a kind of polycarbonate/polyethylene terephthalate, comprises the following steps:
1) by polyethylene terephthalate (PET), acrylic nitrile-butadiene-styrene (ABS), inorganic filler with
And after the auxiliary agent mixing of partial amount, melt extrude through double screw extruder, cool down, pelletizing, obtain master batch；
2) by the auxiliary agent of Merlon, toughener, chain extender and surplus at the first segment machine barrel of double screw extruder
Place's charge door feeding, master batch is in Section of five machine barrel charge door feeding of double screw extruder, through fusion plastification, extruding pelletization, system
Polycarbonate/polyethylene terephthalate (i.e. Merlon/poly terephthalic acid to the easy application of lower shrinkage
Glycol ester alloy material).
In the inventive method, owing to polyester (Merlon and polyethylene terephthalate) is more sensitive to moisture,
Under high temperature fused state, triggered degradation.Therefore, before prepared by alloy material, raw material is thoroughly dried, moisture Control
Below 0.05%.
Step 1) in, the temperature that melt extrudes of described double screw extruder is 245 DEG C～275 DEG C, specifically, described
The temperature of double screw extruder is arranged: the firstth district to each section of the 9th district temperature be respectively 250 ± 5 DEG C, 260 ± 5 DEG C, 270 ± 5
DEG C, 270 ± 5 DEG C, 270 ± 5 DEG C, 265 ± 5 DEG C, 265 ± 5 DEG C, 260 ± 5 DEG C, 260 ± 5 DEG C, die head temperature is 250 DEG C～265
DEG C, main-machine screw rotating speed is 550～850r/min.
Step 2) in, the temperature that melt extrudes of described double screw extruder is 245 DEG C～300 DEG C, described twin screw
The temperature of extruder is arranged: from each section of temperature of first segment machine barrel to the 5th section machine barrel be respectively 270 DEG C～280 DEG C, 280 DEG C～
290 DEG C, 290 DEG C～300 DEG C, 275 DEG C～280 DEG C, 265 DEG C～270 DEG C；From the temperature of Section of six machine barrel to each section of head it is
260 DEG C～270 DEG C, 250 DEG C～260 DEG C, 245 DEG C～255 DEG C, 245 DEG C～250 DEG C, die head temperature is 250 DEG C～265 DEG C.
The preparation method of the polycarbonate/polyethylene terephthalate of the easy application of described lower shrinkage
In, in double screw extruder, screw slenderness ratio is 32～48:1, rotating speed 350r/min～850r/min.
Before master batch adds extruder, it is to be ensured that from the material of first segment machine barrel addition already at molten condition, therefore
In the leading portion screw combinations of extruder, increase the intensity of mixing plasticizing screwing element, improve plasticizing effect.High temperature high shear bar
Under part, after full-bodied PC resin is completely melted, the master batch of addition also Flashmelt in hot environment at Section five machine barrel
Plasticizing, and dispersed.Owing to hardness of mineral is high, being rubbed by screw rod shearing, heat speed is far above resin material, and therefore the
Five joint machine barrels to this section of screw rod of head needs more weak screw thread combination, and the shearing friction that such master batch is subject in machine barrel is more weak,
Both can be dispersed, avoid again causing the too much degraded of PC resin, improve alloy system mechanics row performance and heat stability.
Compared with prior art, present invention have the advantage that
The polycarbonate/polyethylene terephthalate of the easy application of lower shrinkage of the present invention, has ultralow receipts
Shrinkage and have higher impact toughness and elongation at break, uses PC/PET/ABS to be alloy resin body at formula design aspect
System, solves the stress cracking easily occurred when the material later stage is applied, and the shortcoming of poor solvent resistance, the goods being molded have bright and clean
Surface, it is possible to exempting from primary coat and spray paint, reduce coating process, save painting cost, and PASS is strong.Use mineral and crystalline substance
Must be composite filled, active balance product strength, outward appearance, the problem of shrinkage factor, especially for automobile-used exterior trim product such as door handle,
Serious problems of reprinting books in a reduce format at wall thickness are effectively solved.Material of the present invention have excellence comprehensive mechanical performance, ultralow shrinkage factor,
Bigger design space is provided for the application and development of material later stage.
The preparation method of the polycarbonate/polyethylene terephthalate of the easy application of lower shrinkage of the present invention,
Existing equipment double screw extruder is used to realize, by the adjustment of screw combinations and feed location and the control of temperature
System, uses the filling of PC/PET/ABS and inorganic filler, reduces the purpose of Material shrinkage rate, and preparation is simple, it is easy to control,
It is prone to industrialization large-scale production, has broad application prospects.
Detailed description of the invention
Percent in detailed description of the invention is all weight percentage.PC and PET, mineral need dried, and moisture is wanted
Ask less than 0.05%.PC is dried 4 hours at 120 DEG C, and PET is dried 4 hours at 150 DEG C, and it is little that Pulvis Talci and whisker 120 DEG C are dried 2
Time.
Comparative example 1～3 and embodiment 1～8
1) preparation of master batch: by polyethylene terephthalate (far spinning CB 602, intrinsic viscosity [η] is 0.8dl/g,
[η] test condition: using the phenol of volume ratio 1:1 and sym-tetrachloroethane is solvent), ABS (Gaoqiao Petrochemical Company, 3513), inorganic filler
[antioxidant is (by antioxidant for (commercially available 1250 mesh Pulvis Talci, draw ratio is the silicon dioxide whisker of 2-10) and the auxiliary agent of half amount
168 and antioxidant 1076 1:1 by weight are mixed to get, and the model that irgasfos 168 selects Jin Haiyabao to produce is AT-168's
Product, the product that model is IRGANOX 1076 that antioxidant 1076 vapour bar produces) and lubricant (tetramethylolmethane stearic acid
Ester, section peaceful LOXIOL P 861/3.5)] after height mixes conjunction, make master batch through double screw extruder extrusion.Double screw extruder
Temperature arrange: the firstth district to each section of the 9th district temperature be respectively 250 ± 5 DEG C, 260 ± 5 DEG C, 270 ± 5 DEG C, 270 ± 5 DEG C, 270
± 5 DEG C, 265 ± 5 DEG C, 265 ± 5 DEG C, 260 ± 5 DEG C, 260 ± 5 DEG C, die head temperature is 250 DEG C～265 DEG C, main-machine screw rotating speed
For 750r/min, extrusion material strip, through water-cooled, dehumidifying, pelletizing, obtains master batch, standby.Master batch next step do with PC alloy from
Side feeding also needs desiccant dehumidification before adding, 130 DEG C are dried 4 hours, and moisture Control is below 0.05%.
2) by polycarbonate (Korea S LG 1201-10, MI 10g/10min), MBS toughener (ROHM AND HAAS EXL
2620), ((2-isopropenyl-2-oxazoline)-styrol copolymer, Japan touches for EMA toughener (Du Pont AC 1125), chain extender
Matchmaker RPS 1005) put into 950r/min high mixer mixing 2min, add remain half amount auxiliary agent [antioxidant is (by antioxygen
Agent 168 and antioxidant 1076 are mixed to get by weight 1:1, and the model that irgasfos 168 selects Jin Haiyabao to produce is AT-168
Product, the product that model is IRGANOX 1076 that antioxidant 1076 vapour bar produces) and lubricant (tetramethylolmethane stearic acid
Ester, the peaceful LOXIOLP of section 861/3.5)], mixed material charge door at the first segment machine barrel of double screw extruder is added
Enter.Again previously prepared master batch is added by Section of five machine barrel spout.Each section of temperature of double screw extruder machine barrel is from first segment
Machine barrel to each section of temperature of Section of five machine barrel be respectively 270 DEG C～280 DEG C, 280 DEG C～290 DEG C, 290 DEG C～300 DEG C, 275 DEG C
～280 DEG C, 265 DEG C～270 DEG C；From the temperature of Section of six machine barrel to each section of head be 260 DEG C～270 DEG C, 250 DEG C～260 DEG C,
245 DEG C～255 DEG C, 245 DEG C～250 DEG C, die head temperature is 250 DEG C～265 DEG C.In double screw extruder, screw slenderness ratio is
40:1, rotating speed 800r/min.Through double screw extruder extrude after through water-cooled, pelletizing, pellet in air dry oven 100 DEG C put
After putting 4 hours, obtain the polycarbonate/polyethylene terephthalate of the easy application of lower shrinkage, then by injecting
Shaping mechanism is for test bars.
Comparative example 1～3 and embodiment 1～8 in the weight percentage (%) of each raw material refer to table 1, by comparative example 1～
3 and embodiment 1～8 preparation batten carry out performance test, test result refers to table 2, and test equipment and standard refer to table 3.
Table 1
Table 2
Continued 2
| Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| 55.7 | 67.8 | 56.5 | 64.7 | 62.8 | 65.2 |
| 25.6 | 30.8 | 45.6 | 32.4 | 23.9 | 26.7 |
| 89.5 | 101.3 | 89.6 | 94.6 | 83.7 | 90.1 |
| 4031.1 | 4368.7 | 3878.3 | 3915.7 | 3789 | 4111.9 |
| 18.8 | 18.6 | 32.1 | 20.3 | 16.4 | 14.5 |
| NB | NB | NB | NB | NB | NB |
| 0.4 | 0.4 | 0.48 | 0.43 | 0.45 | 0.4 |
| 368 | 365 | 374 | 383 | 385 | 375 |
| Nothing | Nothing | Nothing | Nothing | Nothing | Nothing |
| Good | Good | Good | Good | Good | Good |
Note: shrinkage factor is according to the actual size survey calculation of injecting molding die 210*140*2mm.
Table 3
The test data of table 2 combine table 1 and understand, and comparative example 1 is not for add ABS and inorganic filler, prepared alloy
The shrinkage factor of material is bigger than normal, reprints books in a reduce format substantially, spray paint and have stress cracking phenomenon, be not suitable for thick article and spray paint at injection-molded item wall thickness
Application.Using fiberglass reinforced in comparative example 2, the toughness preparing alloy material is the poorest, and the goods being molded are floating fine serious, it is impossible to spray
It is coated with.Comparative example 3 and embodiment 1 contrast the addition of chain extender, and the heatproof air aging performance of obtained alloy material is significantly different, rise
Beginning decomposition temperature differs 30 DEG C.In embodiment, the macromolecular chain of degraded is coupled by chain extender again, and lower-molecular substance content is less,
Heat decomposition temperature significantly improves, and in injection moulding process, does not haves degraded filamentary silver problem, makes the processing technique window of material become
Bigger, make material have broader suitable application area.
Claims (6)
1. a polycarbonate/polyethylene terephthalate, it is characterised in that by following weight percentage
Component composition:
Described inorganic filler is one or both in mineral, whisker；Described mineral are that Pulvis Talci, barium sulfate, glass are micro-
One or more in pearl；Described whisker be the one in potassium titanate crystal whisker, aluminium borate whisker, silicon dioxide whisker or
Two or more；
Described toughener is one or both in MBS toughener, EMA toughener；Described MBS toughener is with polyphenyl second
Alkene and methacrylate be shell, butadiene be the anti-impact modifier of the nucleocapsid structure of core；Described EMA toughener is second
Alkene-acrylic acid methyl ester .-glycidyl methacrylate terpolymer toughener；
Described even agent of expanding is the compound containing epoxide group or the compound containing oxazoline group.
Polycarbonate/polyethylene terephthalate the most according to claim 1, it is characterised in that institute
The melt index of the Merlon stated is 8-20g/10min, test condition: 300 DEG C, 1.2kg.
Polycarbonate/polyethylene terephthalate the most according to claim 1, it is characterised in that institute
The intrinsic viscosity of the polyethylene terephthalate stated is 0.5-1.2dl/g, test condition: use the phenol of volume ratio 1:1
It is solvent with sym-tetrachloroethane.
Polycarbonate/polyethylene terephthalate the most according to claim 1, it is characterised in that institute
The auxiliary agent stated is antioxidant and lubricant, and with weight, the content of antioxidant is 0.1%～2%, containing of lubricant
Amount is 0.1%～2%.
5. according to the preparation of the polycarbonate/polyethylene terephthalate described in any one of Claims 1 to 4
Method, it is characterised in that comprise the following steps:
1) by the auxiliary agent of polyethylene terephthalate, acrylic nitrile-butadiene-styrene, inorganic filler and partial amount
After mixing, melt extrude through double screw extruder, cool down, pelletizing, obtain master batch；
2) auxiliary agent of Merlon, toughener, chain extender and surplus is added at the first segment machine barrel of double screw extruder
Material mouth feeding, master batch is in Section of five machine barrel charge door feeding of double screw extruder, and through fusion plastification, extruding pelletization, system is to poly-
Carbonic ester/polyethylene terephthalate alloy material.
The preparation method of polycarbonate/polyethylene terephthalate the most according to claim 5, it is special
Levy and be, step 1) in, the temperature that melt extrudes of described double screw extruder is 245 DEG C～275 DEG C；
Step 2) in, the temperature that melt extrudes of described double screw extruder is 245 DEG C～300 DEG C.
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| CN105820487B (en) * | 2016-04-07 | 2019-04-05 | 青岛海信电器股份有限公司 | A kind of audio & video equipment shell composite material and preparation method, audio & video equipment |
| CN107488342B (en) * | 2016-06-12 | 2020-04-07 | 杭州师范大学 | Whisker filled polycarbonate and polyethylene glycol terephthalate composite material with high thermal stability and preparation method thereof |
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| CN109608856B (en) * | 2018-11-23 | 2020-11-10 | 中广核俊尔新材料有限公司 | Special flame-retardant polycarbonate alloy material for charging pile shell and preparation method thereof |
| CN110643166A (en) * | 2019-11-07 | 2020-01-03 | 新钻塑料科技（上海）有限公司 | High-fluidity alloy material for IC card and preparation method thereof |
| CN113652070A (en) * | 2021-08-31 | 2021-11-16 | 会通新材料股份有限公司 | Low-precipitation flame-retardant PC/ABS alloy material and preparation method thereof |
| CN115627059B (en) * | 2022-09-27 | 2023-10-17 | 江苏金发科技新材料有限公司 | PC/PET alloy material and preparation method and application thereof |
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| JP4705388B2 (en) * | 2005-03-16 | 2011-06-22 | 帝人化成株式会社 | Vehicle exterior material and manufacturing method thereof |
| JP2007176969A (en) * | 2005-12-27 | 2007-07-12 | Mitsubishi Chemicals Corp | Aromatic polycarbonate resin composition and resin molded product |
| CN102051034B (en) * | 2009-10-30 | 2013-04-17 | 上海普利特复合材料股份有限公司 | Polycarbonate composite with low gloss and high heat resistance |
| CN101857716A (en) * | 2010-03-10 | 2010-10-13 | 上海锦湖日丽塑料有限公司 | Polycarbonate/polyethylene terephthalate resin composition and preparation method |
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Address after: 325011 Wenzhou economic and Technological Development Zone, Zhejiang high tech Park Road, No. 60 Co-patentee after: Nakahiro Junl (Shanghai) new material Co., Ltd. Patentee after: CGN JUNER NEW MATERIALS CO., LTD. Address before: 325011 Wenzhou economic and Technological Development Zone, Zhejiang high tech Park Road, No. 60 Co-patentee before: Shanghai Jun'er New Material Co., Ltd. Patentee before: Zhejiang Juner New Material Co.,Ltd. |