CN104910602A - Electroplatable polycarbonate composition and preparation method thereof - Google Patents
Electroplatable polycarbonate composition and preparation method thereof Download PDFInfo
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- CN104910602A CN104910602A CN201510337190.0A CN201510337190A CN104910602A CN 104910602 A CN104910602 A CN 104910602A CN 201510337190 A CN201510337190 A CN 201510337190A CN 104910602 A CN104910602 A CN 104910602A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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 provides an electroplatable polycarbonate composition and a preparation method thereof. The polycarbonate composition is mainly prepared from the following raw materials in parts by mass: 20-85 parts of polycarbonate resin, 10-80 parts of organosilicone/polycarbonate copolymer, 0.2-10 parts of ethylene/methyl acrylate copolymer, 0.3-10 parts of styrene/maleic anhydride-grafted rubber polymer and 0.2-2 parts of a hyperdispersant. The polycarbonate composition provided by the invention is good in ultralow-temperature cracking resistance, electroplating corrosion cracking resistance and embedded steel sheet stress cracking resistance; an electroplated layer is high in binding force; plated pieces are good in quality.
Description
Technical field
The present invention relates to engineering plastics technical field, particularly relate to polycarbonate compositions of a kind of electrodepositable and preparation method thereof.
Background technology
Polycarbonate (English name Polycarbonate, be called for short PC) is the armorphous thermoplastic macromolecule material of a kind of water white indefiniteness.It has high strength, high tenacity, high heat resistance, excellent electrical insulating property, extensibility, dimensional stability and chemical resistance; Also have from putting out, easily strengthen, the excellent properties such as fire-retardant, nontoxic, health, easy coloring, antidetonation, the consumption therefore in engineering plastics is only second to polymeric amide (PA) and occupies second.Be widely used in the field such as CD and drinking water container in the socket in the illumination in glazing, automotive industry, instrument panel system, electric industry, shell, material of construction hollow sunlight board, family's civil goods.
Because PC molecule chain rigidity is larger, sterically hindered height, product melt viscosity is larger, processing difficulties, and solvent resistance and wearability poor, easily crisp under low temperature, easily produce stress cracking, notch sensitivity greatly, the not shortcoming such as solvent resistant, make the application of PC be confined to Primary Speciation, improve solvent resistance, the plating resistance power PC that must use modification; High-performance modified PC application development in telecommunications product is rapid, at present, domestic technique is in solution spraying solvent resistant stress cracking and electroless plating, there is position, ultra thin handset shell nut hole easily to split, weld mark is poor with the refraction of light pearlescent effect surface treatment of difference alternate blended generation, and unstable, integral level is low more than external international top-brand.
Plastic electroplating product is compared with metallic electroplated parts, there is the advantages such as lightweight, easily processing, surface luster property and planarization are good, in automobile, motorcycle, five metals, daily houseware etc. and the communication such as mobile phone, panel computer electronic applications have been widely used, and Application Areas can be more and more wider, also can be more and more higher to the requirement of electroplating quality.Plastic electroplating technological process needs through alkaline degreasing → solvent treatment → adjustment process (chemical roughen) → reduction → surface adjustment → sensitization → activation → electroless plating → other plating.Wherein, frosting oxidation dissolution carried out the pothole micropore that superficial expansion alligatoring becomes internal lock in alligatoring, is a ring very important in plastic electroplating process, and the quality of alligatoring directly has influence on the integrity of the bonding force of coating, luminance brightness and coating.But in plating flow process, the working temperature of a few procedure is all at 60 DEG C ~ 70 DEG C, solvent treatment improves the active organic solvent of frosting energy wetting capacity, the high density acid with strong oxidizing property that alligatoring operation adopts produces powerful internal stress and destruction to plastics, degraded toughness, easily affects bonding force and the plating quality of subsequent plating layer.So general ABS or PC/ABS of plastics of plating, and in PC/ABS plating, PC content is the highest is no more than 45%, is generally 30%, otherwise hardeningly to become fragile after plating because the internal stress of PC is large, ftractures, so PC can not electroplate.
In PC, respectively by independent interpolation MBS or high glue powder, toughening modifying is carried out to PC although have in the recent period, to a certain degree can improve low-temperature impact toughness and the notch stress cracking of PC; But MBS poor solvent resistance, can not spray plating, and it is serious to decline lower than-23 DEG C of environmental performances; High glue powder can improve the plating sticking power on PC surface, but resistance to low temperature is poor, and product can not use by cold snap out of doors.The superior adhesion of the metal coating of polycarbonate resin can improved by ethylenic copolymer and graft rubber polymers; but coating surface easily bubbles and occurs that dissimilarity affects quality of coating; and through plating alligatoring and spraying UV oil guard film, base material is easily subject to the erosion of strong oxidizer and organic solvent and intensity step-down so that brittle failure.
Summary of the invention
In view of this, one aspect of the present invention provides a kind of carbonate composition of electrodepositable, and this polycarbonate compositions has the resistance to cracking of good very low temperature, plating resistant to corrosion cracking and embedded steel disc stress crack resistance performance, and galvanization coating bonding force is strong, and plating quality is good.
The present invention is by the following technical solutions:
A polycarbonate compositions for electrodepositable, by mass parts, is prepared from primarily of following raw material:
In the present invention, polycarbonate resin content can be 20 parts, 30 parts, 40 parts, 50 parts, 60 parts, 70 parts, 80 parts or 85 parts etc., and organosilicon/Copolycarbonate content can be 10 parts, 20 parts, 30 parts, 40 parts, 50 parts, 60 parts, 70 parts or 80 parts etc.; Ethylene/methyl acrylate copolymer content can be 0.2 part, 0.3 part, 0.5 part, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts etc.; Phenylethylene/maleic anhydride graft rubber polymers content can be 0.3 part, 0.5 part, 0.8 part, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts etc.; Hyper-dispersant content can be 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.5 parts or 2 parts etc.
Organosilicon/Copolycarbonate is adopted to carry out reinforcement to PC in the present invention, strengthen the winter hardiness of PC, powerful oxidation corrosion resistance acidity and resistance to Organic chemical solvents, can the active organic solvent of opposing and high density acid with strong oxidizing property powerful internal stress that plastics are produced and destruction power, protection PC molecular chain exempts from destruction, prevent from product from electroplating rear bending and fractureing after falling to break, impact uses, when product spraying UV oil after plating is as protective membrane, can prevent the erosion cracking of organic solvent to coating and ground from causing brittle failure, very low temperature stress impact can also be resisted; Ethylene-methyl acrylate copolymer and phenylethylene/maleic anhydride graft rubber polymers is adopted to carry out modification to PC again, ethylene-methyl acrylate copolymer is as compatible toughening agents, its methyl acrylate base all has good consistency and melt bond strength to PC and ethene, vinyl can increase snappiness and the ESCR (resistance to stress crackle) of PC, thus enhancing PC is low temperature resistant, stress crack resistant, resistance to dissolubility ftracture and weld mark strength performance, prevent PC from electroplating hardening afterwards becoming fragile; Phenylethylene/maleic anhydride graft rubber polymers can increase-volume be complementary further; improve PC to be connected with the interface of ethene; the pearlescent effect phenomenon produced because specific refraction difference is too large can be solved; functional group's particulate homogenous of ethylene-methyl acrylate copolymer and phenylethylene/maleic anhydride graft rubber polymers is distributed in around PC simultaneously; PC molecular chain is played a protective role; make PC when coarse surface process, surface forms the crystallite hole of even compact, produces-COOH ,-SO
3h or-CONH
2isoreactivity group, is easy to the absorption of active colloidal and coating, improves sprayability and the chemical plating layer adhesion performance of PC, prevents PC from electroplating hardening and brittle cracking, can carry out parcel plating and vacuum plating by spray insulation ink simultaneously; Hyper-dispersant can strengthen consistency between each component and dispersiveness, and preventing bridge flocculation affects product quality of coating thus improve yield.
The present invention is optimized process to each component concentration, particularly the content of organosilicon/Copolycarbonate, ethylene/methyl acrylate copolymer and phenylethylene/maleic anhydride graft rubber polymers is optimized, vinyl and PC molecular entanglement is made to produce powerful anti-stress cracking, simultaneously, the erosion of effective prevention organic solvent and highly acid chemical substance, when embedded steel disc, can cushion and offset the internal stress because steel disc or external force creep relaxation produce.Because steel disc is different from the thermal expansivity of PC, when temperature raises, when the present invention can prevent electro-plating liquid or spray, solvent is seeped in gap, detrimentally affect is caused to PC plastic, PC of the present invention can be used for oil spout application, and when beating nut to its plating PC ultra thin handset shell that is brittle by nip and that prepare, proof stress does not ftracture.
The present invention makes full use of polycarbonate resin, organosilicon/Copolycarbonate, ethylene/methyl acrylate copolymer, synergy between phenylethylene/maleic anhydride graft rubber polymers and hyper-dispersant, and process is optimized to its content, make modified polycarbonate have the resistance to cracking of good very low temperature, plating resistant to corrosion cracking and embedded steel disc stress crack resistance performance.
Preferably, the raw material of described polycarbonate compositions also comprises 0.1 ~ 0.5 part, oxidation inhibitor and lubricant 0.2 ~ 1.0 part.
Preferably, by mass parts, be prepared from primarily of following raw material:
Preferably, described polycarbonate resin is linear bisphenol A type polycarbonate, and described polycarbonate resin molecular weight is 18000 ~ 40000Da;
Preferably, described organosilicon/Copolycarbonate is the carbonate polymer that end group contains bis-phenol silicone oil or hydroxy silicon oil grafting;
Preferably, described organosilicon/Copolycarbonate is the organic-silicon-modified Copolycarbonate of aminomethyl phenyl, and in described organosilicon/polycarbonate, silicone content is 5 ~ 30%wt.
Preferably, in described ethylene/methyl acrylate copolymer, methyl acrylate content is 15 ~ 35%wt of ethylene/methyl acrylate copolymer;
Preferably, described phenylethylene/maleic anhydride graft rubber polymers is phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers and/or glue content is the high glue powder of 40 ~ 70%wt;
Preferably, in described phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers, phenylethylene-maleic anhydride content is phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers 25 ~ 35%wt, acrylonitrile content is phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers 10 ~ 20%wt, and butadiene content is phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers 40 ~ 65%wt.
Preferably, described hyper-dispersant is made up of the anchoring group for hyper-dispersant 5 ~ 20%wt and the solvent chain for hyper-dispersant 80 ~ 95%wt;
Preferably, described anchoring group is selected from-R
2n ,-R
3n
+,-COOH ,-COO
-,-SO
3h ,-SO
2-,-PO
4 2-, polyamine, one in polyvalent alcohol or polynary ether or at least two kinds;
Preferably, described solvent chain is selected from one in polyester, polyethers, polyolefine or polyacrylic ester or at least two kinds.
In the present invention, solvent chain strengthens the consistency between each component, uniformly dispersed, thus prevents other components as the bridge flocculation of ethylene-methyl acrylate copolymer, phenylethylene-maleic anhydride graft rubber polymers, affects coating surface quality and sticking power; Anchoring group strengthens the adsorptive power of each component, improves each alternate consistency, equally distributed stability, thus improves the yield after product plating.
Preferably, described oxidation inhibitor is organic phosphites oxidation inhibitor and/or Hinered phenols antioxidant;
Preferably, described lubricant is pentaerythritol stearate.
The present invention provides a kind of method preparing above-mentioned polycarbonate compositions on the other hand, polycarbonate compositions prepared by the method has the resistance to cracking of good very low temperature, plating resistant to corrosion cracking and embedded steel disc stress crack resistance performance, galvanization coating bonding force is strong, and plating quality is good.
Prepare a method for above-mentioned polycarbonate compositions, comprise the following steps:
(1) by mass parts, by polycarbonate resin 20 ~ 85 parts, organosilicon/Copolycarbonate 10 ~ 80 parts, ethylene/methyl acrylate copolymer 0.2 ~ 10 part, phenylethylene/maleic anhydride graft rubber polymers 0.3 ~ 10 part, hyper-dispersant 0.2 ~ 2 part, optionally 0.1 ~ 0.5 part, oxidation inhibitor and optionally lubricant 0.2 ~ 1.0 part stir, obtained mixture;
(2) described mixture is put in twin screw extruder carry out heating and melting and extruding pelletization, obtained polycarbonate.
Preferably, before step (1), also comprise step (1 ') and reduce gear block at the melt zone of twin screw extruder, increase ZME type toothed thread element at mixing and homogenizing zone, make twin screw extruder be combined into the screw rod of low-shearing power high dispersive type.
The present invention adopts the blended shearing technique of screw flight block permutation and combination of the low sheraing high dispersive of plastics twin screw extruder, and reduction shearing is on the impact of PC stress and improve different components consistency and dispersiveness.
Preferably, step (2) detailed process is: put in twin screw extruder by described mixture, vacuum pressure be-0.04 ~-0.1Mpa, under rotating speed is 400 ~ 800r/min condition, carry out heating and melting, blended plasticizing and shear dispersion, extruding pelletization at 220 ~ 290 DEG C, through traction tie rod, tank cooling, dehydration and pelletizing, the polycarbonate of obtained electrodepositable.
In the present invention, vacuum pressure is-0.04 ~-0.1MPa, guarantees that in mixture, low molecule and moisture content are pumped, and reduces the content of inner low molecule and moisture content in blend, and minimizing low molecule and moisture content are on the impact of product stress.
Compared with prior art, beneficial effect of the present invention: the polycarbonate compositions of electrodepositable provided by the invention, by mass parts, be prepared from primarily of following raw material: polycarbonate resin 20 ~ 85 parts, organosilicon/Copolycarbonate 10 ~ 80 parts, ethylene/methyl acrylate copolymer 0.2 ~ 10 part, phenylethylene/maleic anhydride graft rubber polymers 0.3 ~ 10 part and hyper-dispersant 0.2 ~ 2 part.This polycarbonate compositions has the resistance to cracking of good very low temperature, plating resistant to corrosion cracking and embedded steel disc stress crack resistance performance, and galvanization coating bonding force is strong, and plating quality is good.
Embodiment
Further illustrate technical scheme of the present invention respectively below in conjunction with the embodiments.
Embodiment 1: the polycarbonate compositions of the present embodiment electrodepositable, by mass parts, comprises following component:
Prepare above-mentioned polycarbonate compositions method to comprise the following steps:
Reduce gear block at the screw combinations melt zone of twin screw extruder, increase ZME type toothed thread element at mixing and homogenizing zone, twin screw extruder is combined into the screw rod of low-shearing power high dispersive type;
Said components is stirred, obtained mixture, described mixture is put in the twin screw extruder after above-mentioned levelling, 290 DEG C, under rotating speed is 400r/min condition, carry out heating and melting, make the blended plasticizing of mixture, shear dispersion, extruding pelletization under vacuum pressure is-0.04Mpa, through traction tie rod, tank cooling, dehydration, pelletizing, the polycarbonate compositions of obtained electrodepositable.
Embodiment 2: the polycarbonate compositions of the present embodiment electrodepositable, by mass parts, comprises following component:.
Prepare above-mentioned flame retardant polycarbonate composition method as follows:
Reduce gear block at the screw combinations melt zone of twin screw extruder, do not use reverse-flight elements at mixing and homogenizing zone, twin screw extruder is combined into the screw rod of low-shearing power high dispersive type;
Said components is stirred, obtained mixture, described mixture is put in the twin screw extruder after above-mentioned levelling, at 220 DEG C, rotating speed is under 800r/min condition, carry out heating and melting, be the blended plasticizing of mixture, shear dispersion, extruding pelletization under vacuum pressure is-0.04Mpa, through traction tie rod, tank cooling, dehydration, pelletizing, the polycarbonate compositions of obtained electrodepositable.
The polycarbonate compositions component (by mass parts) of embodiment 1 ~ 3 and comparative example 1 ~ 5 is as shown in table 1, and preparation method is identical with embodiment 1:
Table 1
Performance test: by the polycarbonate compositions prepared in embodiment 1 ~ 3 and comparative example 1 ~ 5, part preparation ASTM standard batten, tests according to testing standard; The tests such as another part, carries out electroplating by the phone housing of identical Shooting Technique molding embedded metal sheet through injection moulding machine, bending and spraying.Result is as shown in table 2.
Table 2
As can be seen from table 1 ~ 2: compared with comparative example 1, organosilicon/Copolycarbonate is added with in embodiment, the polycarbonate compositions of embodiment 1 has following performance: 1, shock strength is good, especially there is good winter hardiness and resistance to Organic chemical solvents, active organic solvent can be resisted to its powerful internal stress produced and destruction power; 2, after the good and spraying UV of plating performance, drop test percent of pass is high, when the product spraying UV oil after plating is as protective membrane, can prevent the erosion cracking of organic solvent to coating and ground from causing brittle failure;
Compare with embodiment 3 with embodiment 1, embodiment 2 carries out further optimization process to each component concentration, and the resistance to cracking of polycarbonate compositions very low temperature that embodiment 2 obtains and solvent resistant stress cracking performance have had further lifting; Compared with contrast 2, in embodiment 2, be added with hyper-dispersant, obtained polycarbonate compositions be injection molded into workpiece have good coating adhesion and spraying UV after drop test percent of pass; Compared with comparative example 3, embodiment 2 adopts organosilicon/Copolycarbonate, ethylene/methyl acrylate copolymer and phenylethylene/maleic anhydride graft rubber polymers to carbonate resin modification, the polycarbonate compositions of embodiment 2 has the resistance to cracking of good very low temperature, plating organic solvent-resistant cracking and coating adhesion performance, without surperficial pearlescent effect;
Be added with ethylene/methyl acrylate copolymer and phenylethylene/maleic anhydride graft rubber polymers in comparative example 4 therefore have good plating performance, but it is on the low side not add its coating adhesion hundred lattice yield of hyper-dispersant, do not add organosilicon/Copolycarbonate, after spraying UV, drop test percent of pass is seriously on the low side; Compared with comparative example 4, embodiment 3 adopts organosilicon/Copolycarbonate and hyper-dispersant, and after obtained polycarbonate compositions has the resistance to cracking of good very low temperature, plating organic solvent-resistant cracking and coating adhesion performance, spraying UV, drop test percent of pass is high;
Compared with comparative example 5, embodiment 3 adds organosilicon/Copolycarbonate and ethylene/methyl acrylate copolymer, obtained polycarbonate compositions has the resistance to cracking of very low temperature, plating organic solvent-resistant cracking and coating adhesion performance, keeps better toughness after plating and spraying.
Polycarbonate compositions of the present invention has following performance:
Super tough cold-resistant stress crack resistant function: ultra thin handset case flat plate computer, the signal equipment that can be widely used in needs spraying, traffic facilities and the energy-conservation periphery accessory of LED, use under the bad weather circumstances such as the low temperature that seasons oneself to cold, high heat.
Super tough chemically-resistant solvent stress cracking function: because PC chemical-resistant is poor, this product application is in the medicine equipment preventing from easily causing internal stress cracking brittle under pharmaceutical chemicals exists, and solution high-temperature sterilization causes the catabiosis of crackle, PC is applied in medicine equipment can be expanded rapidly.
Stress crack resistant electrodepositable function: prevent common PC from electroplating hardening, brittle cracking, parcel plating can be carried out by spray insulation ink simultaneously.This function has good metalluster and high strength after making PC surface metalation (plating), is applied to high texture decorative automobile parts; High texture phone housing, panel computer.PC after surface metalation plating can also as shielding electromagnetic waves material, in appliance computer.
Embedded steel disc function: this product has superpower stress crack resistant and tough sexuality, can embedded metal steel disc during injection moulding, prevent both coefficients of expansion different, when temperature raises, when electro-plating liquid or spraying, solvent can be seeped in gap, impacts plastic component structure.For phone housing, notebook computer, simultaneously in conjunction with the difficulty conduction insulativity of PC, make electronic package, junctor for computer, electronics, the communications field.
It should be noted that and understand, when not departing from the spirit and scope of accompanying claim the present invention for required protection, various amendment and improvement can be made to the present invention of foregoing detailed description.Therefore, the scope of claimed technical scheme is not by the restriction of given any specific exemplary teachings.
Applicant states, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (10)
1. a polycarbonate compositions for electrodepositable, is characterized in that, by mass parts, is prepared from primarily of following raw material:
2. polycarbonate compositions according to claim 1, is characterized in that, the raw material of described polycarbonate compositions also comprises: 0.1 ~ 0.5 part, oxidation inhibitor and lubricant 0.2 ~ 1.0 part.
3. polycarbonate compositions according to claim 1 and 2, is characterized in that, by mass parts, is prepared from primarily of following raw material:
4. according to the polycarbonate compositions one of claims 1 to 3 Suo Shu, it is characterized in that, described polycarbonate resin is linear bisphenol A polycarbonate, and described polycarbonate resin molecular weight is 18000 ~ 40000Da;
Preferably, described organosilicon/Copolycarbonate is the polycarbonate that end group contains bis-phenol silicone oil or hydroxy silicon oil grafting;
Preferably, described organosilicon/Copolycarbonate is the organic-silicon-modified Copolycarbonate of aminomethyl phenyl, and in described organosilicon/Copolycarbonate, silicone content is 5 ~ 30%wt.
5. according to the polycarbonate compositions one of Claims 1-4 Suo Shu, it is characterized in that, in described ethylene/methyl acrylate copolymer, methyl acrylate content is 15 ~ 35%wt of ethylene/methyl acrylate copolymer;
Preferably, described phenylethylene/maleic anhydride graft rubber polymers is phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers and/or glue content is 40 ~ 70%wt high glue powder;
Preferably, in described phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers, phenylethylene-maleic anhydride content is 25 ~ 35%wt of phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers, acrylonitrile content is 10 ~ 20%wt of phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers, and butadiene content is 40 ~ 65%wt of phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers.
6. according to the polycarbonate compositions one of claim 1 to 5 Suo Shu, it is characterized in that, described hyper-dispersant is made up of 5 ~ 20%wt anchoring group and 80 ~ 95%wt solvent chain;
Preferably, described anchoring group is selected from-R
2n ,-R
3n
+,-COOH ,-COO
-,-SO
3h ,-SO
2-,-PO
4 2-, polyamine, one in polyvalent alcohol or polynary ether or at least two kinds;
Preferably, described solvent chain is selected from one in polyester, polyethers, polyolefine or polyacrylic ester or at least two kinds.
7. according to the polycarbonate compositions one of claim 2 to 6 Suo Shu, it is characterized in that, described oxidation inhibitor is organic phosphites oxidation inhibitor and/or Hinered phenols antioxidant;
Preferably, described lubricant is pentaerythritol stearate.
8. prepare a method for the described polycarbonate compositions of one of claim 1 ~ 7, it is characterized in that, comprise the following steps:
(1) by mass parts, by polycarbonate resin 20 ~ 85 parts, organosilicon/Copolycarbonate 10 ~ 80 parts, ethylene/methyl acrylate copolymer 0.2 ~ 10 part, phenylethylene/maleic anhydride graft rubber polymers 0.3 ~ 10 part, hyper-dispersant 0.2 ~ 2 part, optionally 0.1 ~ 0.5 part, oxidation inhibitor and optionally lubricant 0.2 ~ 1.0 part stir, obtained mixture;
(2) described mixture is put in twin screw extruder carry out heating and melting and extruding pelletization, obtained polycarbonate.
9. preparation method according to claim 8, it is characterized in that, before step (1), also comprise step (1 ') and reduce gear block at the melt zone of twin screw extruder, increase ZME type toothed thread element at mixing and homogenizing zone, make twin screw extruder be combined into the screw rod of low-shearing power high dispersive type.
10. preparation method according to claim 8, it is characterized in that, step (2) detailed process is: put in twin screw extruder by described mixture, vacuum pressure be-0.04 ~-0.1Mpa, under rotating speed is 400 ~ 800r/min condition, carry out heating and melting, blended plasticizing and shear dispersion, extruding pelletization at 220 ~ 290 DEG C, through traction tie rod, tank cooling, dehydration and pelletizing, the polycarbonate compositions of obtained electrodepositable.
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|---|---|---|---|---|
| CN111978700A (en) * | 2020-08-14 | 2020-11-24 | 广州辰东新材料有限公司 | Anti-bending polycarbonate composite material and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155875A (en) * | 2005-04-06 | 2008-04-02 | 朗盛德国有限责任公司 | Molding compounds based on a thermoplastic polycarbonate |
| CN102282212A (en) * | 2009-02-09 | 2011-12-14 | 三菱工程塑胶株式会社 | Polycarbonate resin composition and molded object thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155875A (en) * | 2005-04-06 | 2008-04-02 | 朗盛德国有限责任公司 | Molding compounds based on a thermoplastic polycarbonate |
| CN102282212A (en) * | 2009-02-09 | 2011-12-14 | 三菱工程塑胶株式会社 | Polycarbonate resin composition and molded object thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978700A (en) * | 2020-08-14 | 2020-11-24 | 广州辰东新材料有限公司 | Anti-bending polycarbonate composite material and preparation method and application thereof |
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