CN104910602B - A kind of polycarbonate compositions of electrodepositable and preparation method thereof - Google Patents
A kind of polycarbonate compositions of electrodepositable and preparation method thereof Download PDFInfo
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- CN104910602B CN104910602B CN201510337190.0A CN201510337190A CN104910602B CN 104910602 B CN104910602 B CN 104910602B CN 201510337190 A CN201510337190 A CN 201510337190A CN 104910602 B CN104910602 B CN 104910602B
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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 polycarbonate compositions of a kind of electrodepositable and preparation method thereof.This polycarbonate compositions, in parts by mass, including being mainly prepared from the following materials: polycarbonate resin 20～85 parts, organosilicon/Copolycarbonate 10～80 parts, ethylene/methyl acrylate copolymer 0.2～10 parts, phenylethylene/maleic anhydride graft rubber polymers 0.3～10 parts and hyper-dispersant 0.2～2 parts.The polycarbonate compositions of the present invention has the resistance to cracking of good ultralow temperature, plating resistant to corrosion cracking and embedded steel disc stress crack resistance performance, and galvanization coating adhesion is strong, and plating quality is good.
Description
Technical field
The present invention relates to engineering plastics technical field, particularly relate to a kind of electrodepositable polycarbonate compositions and
Its preparation method.
Background technology
Merlon (English name Polycarbonate is called for short PC), is a kind of water white indefiniteness amorphous
The thermoplastic macromolecule material of type.It has high intensity, high tenacity, high heat resistance, excellent electrical insulating property,
Extensibility, dimensional stability and chemical resistance；Also have self-extinguishment, easily strengthen, fire-retardant, nontoxic, defend
The excellent properties such as life, easy coloring, antidetonation, therefore the consumption in engineering plastics is only second to polyamide (PA)
And occupy second.It is widely used in the illumination in glazing, auto industry, instrument panel system, electronics electricity
CD in socket in gas industry, shell, construction material hollow sunlight board, family's civil goods and drinking water
The fields such as container.
Owing to PC molecule chain rigidity is relatively big, sterically hindered height, product melt viscosity is relatively big, processing difficulties,
And solvent resistance and mar proof are poor, brittle 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, plating
Property must use modification power PC；High-performance modified PC application development in telecommunications product is fast
Speed, at present, in terms of solving spraying solvent resistant stress cracking and chemical plating, there is ultra thin handset in domestic technique
Easily split in position, shell nut hole, the anaclasis pearlescent effect surface of weld mark and the most alternate blended generation
Manage poor, and unstable, integral level is low more than external international top-brand.
Plastic electroplating product is compared with metallic electroplated parts, has lightweight, easily processing, lustrous surface property and smooth
Property the advantage such as good, at aspect and mobile phone, panel computers such as automobile, motorcycle, five metals, daily household wares
Have been widely used Deng communication electronic applications, and application can be increasingly wider, the requirement to electroplating quality
Also can be more and more higher.Plastic electroplating technical process needs to process through alkaline degreasing → solvent process → regulation (to change
Learn roughening) → reduction → surface adjustment → sensitization → activation → chemical plating → other plating.Wherein, roughening
It is frosting oxidation dissolution to carry out superficial expansion be roughened into the pothole micropore of internal lock, is plastic electroplating process
In a critically important ring, the quality of roughening directly influences the complete of the adhesion of coating, brightness and coating
Property.But in plating flow process, the operating temperature of several procedures is all at 60 DEG C～70 DEG C, and solvent process improves
The active organic solvent of frosting energy wetting power, the high concentration acid with strong oxidizing property that roughening operation uses is to moulding
Material produces powerful internal stress and destruction, degraded toughness, easily affects adhesion and the plating piece of subsequent plating layer
Quality.So general ABS or PC/ABS of plastics of plating, and in PC/ABS plating, PC content is the highest
Less than 45%, usually 30%, otherwise can because of the internal stress of PC the most electroplated after hardening can become fragile, hold
Split, so PC can not electroplate.
In PC, by individually interpolation MBS or high glue powder, PC is carried out toughness reinforcing changing although having in the recent period respectively
Property, can to a certain degree improve low-temperature impact toughness and the notch stress cracking of PC；But MBS solvent resistance
Difference, it is impossible to spraying plating, and decline serious less than-23 DEG C of environmental performances；High glue powder can improve PC table
The plating adhesive force in face, but resistance to low temperature is poor, and product can not use by cold snap out of doors.Passing through second
The excellence of the metal coating that alkenyl copolymers and graft rubber polymers can improve polycarbonate resin is bonding
Property, but coating surface easily bubbles and occurs that dissimilarity affects quality of coating, and through plating roughening and spraying
During UV oil guard film, base material is easily subject to strong oxidizer and the erosion of organic solvent and intensity step-down is with embrittlement
Disconnected.
Summary of the invention
In view of this, one aspect of the present invention provides the carbonate composition of a kind of electrodepositable, this Merlon group
Compound has the resistance to cracking of good ultralow temperature, plating resistant to corrosion cracking and embedded steel disc stress crack resistance performance,
Galvanization coating adhesion is strong, and plating quality is good.
The present invention is by the following technical solutions:
The polycarbonate compositions of a kind of electrodepositable, in parts by mass, is mainly prepared from the following materials:
In the present invention polycarbonate resin content can be 20 parts, 30 parts, 40 parts, 50 parts, 60 parts, 70
Part, 80 parts or 85 parts etc., organosilicon/Copolycarbonate content can be 10 parts, 20 parts, 30
Part, 40 parts, 50 parts, 60 parts, 70 parts or 80 parts etc.；Ethylene/methyl acrylate copolymer content can
Think 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..
The present invention uses organosilicon/Copolycarbonate PC carries out reinforcement, strengthen PC tolerance to cold,
Acid and the resistance to Organic chemical solvents of powerful oxidation corrosion resistance, can resist activity organic solvent and high concentration strong oxidizing property
The sour powerful internal stress producing plastics and destruction power, protection PC strand exempts from destruction, prevents
After product plating, bending and fractureing after falling ruptures, and impact uses, and the product after plating sprays UV oil conduct
During protecting film, can prevent organic solvent from the erosion of coating and ground being ftractureed and cause brittle failure, moreover it is possible to resist ultralow
Temperature stress impact；Use ethylene-methyl acrylate copolymer and phenylethylene/maleic anhydride graft rubber polymers again
PC is modified, ethylene-methyl acrylate copolymer as compatible toughening agents, its acrylic acid methyl ester. base pair
PC and ethylene are respectively provided with the good compatibility and melt bond strength, vinyl can increase PC pliability and
ESCR (resistance to stress crackle), thus strengthen that PC is low temperature resistant, stress crack resistant, resistance to dissolubility cracking and welding
Trace strength character, hardening becomes fragile after preventing PC plating；Phenylethylene/maleic anhydride graft rubber polymers can be entered
One step increase-volume is complementary, improves PC and is connected with the interface of ethylene, it is possible to resolve owing to coefficient of refraction difference is too big
The pearlescent effect phenomenon produced, ethylene-methyl acrylate copolymer is grafted rubber with phenylethylene/maleic anhydride simultaneously
Functional group's microgranule of xanthan polymer is uniformly distributed in around PC, plays a protective role PC strand, makes
PC is when coarse surface processes, and surface forms the crystallite hole of even compact, produces-COOH ,-SO3H or
-CONH2Isoreactivity group, it is easy to active colloidal and the absorption of coating, improves sprayability and the chemical-electrical of PC
Coating adhesion performance, prevents PC from electroplating hardening and brittle cracking, can carry out office by spray insulation ink simultaneously
Portion's plating and vacuum plating；Hyper-dispersant can strengthen the compatibility between each component and dispersibility, prevents bridge formation
Flocculation affects product quality of coating thus improves yield.
The present invention is optimized process to each constituent content, particularly to organosilicon/Copolycarbonate, second
The content of alkene/methyl acrylate copolymer and phenylethylene/maleic anhydride graft rubber polymers is optimized, and makes
Vinyl and PC molecular entanglement produce powerful anti-stress cracking, meanwhile, effectively stop organic solvent with strong
The erosion of acid chemical substance, when embedded steel disc, can buffer and offset because of steel disc or external force creep pine
The internal stress that relaxation produces.Owing to steel disc is different from the thermal coefficient of expansion of PC, when temperature raises, the present invention can
When preventing electro-plating liquid or spray, solvent is seeped in gap, has undesirable effect PC plastic, the present invention's
PC can be used for oil spout application, by solvent, its plating is not corroded brittle and preparation PC ultra thin handset shell and beats
During nut, proof stress does not ftractures.
The present invention makes full use of polycarbonate resin, organosilicon/Copolycarbonate, ethylene/methyl acrylate
Copolymer, synergism between phenylethylene/maleic anhydride graft rubber polymers and hyper-dispersant, and to it
Content is optimized process, makes modified Merlon have the resistance to cracking of good ultralow temperature, electroplate resistance to invading
Erosion cracking and embedded steel disc stress crack resistance performance.
Preferably, the raw material of described polycarbonate compositions also includes antioxidant 0.1～0.5 part and lubricant
0.2～1.0 part.
Preferably, in parts by mass, mainly it is prepared from the following materials:
Preferably, described polycarbonate resin is linear bisphenol A type Merlon, described polycarbonate resin
Molecular weight is 18000～40000Da；
Preferably, described organosilicon/Copolycarbonate is that end group contains bis-phenol silicone oil or hydroxy silicon oil grafting
Carbonate polymer；
Preferably, described organosilicon/Copolycarbonate be the organic-silicon-modified Merlon of aminomethyl phenyl altogether
Polymers, in described organosilicon/Merlon, silicone content is 5～30%wt.
Preferably, in described ethylene/methyl acrylate copolymer, methyl acrylate content is ethylene/methyl acrylate
The 15～35%wt of copolymer；
Preferably, described phenylethylene/maleic anhydride graft rubber polymers be phenylethylene-maleic anhydride-acrylonitrile-
Butadiene polymer and/or the high glue powder that glue content is 40～70%wt；
Preferably, in described phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers, phenylethylene-maleic anhydride contains
Amount for phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers 25～35%wt, acrylonitrile content be styrene-
Maleic anhydride-acrylonitrile-butadiene copolymers 10～20%wt, butadiene content is phenylethylene-maleic anhydride-the third
Alkene nitrile-butadiene polymer 40～65%wt.
Preferably, described hyper-dispersant by for hyper-dispersant 5～20%wt anchoring group and be hyper-dispersant
The solvent chain composition of 80～95%wt；
Preferably, described anchoring group is selected from-R2N、-R3N+、-COOH、-COO-、-SO3H、
-SO2-、-PO4 2-, polyamine, one in polyhydric alcohol or polynary ether or at least two；
Preferably, described solvent chain one in polyester, polyethers, polyolefin or polyacrylate or
At least two.
In the present invention, solvent chain strengthens the compatibility between each component, uniformly dispersed, thus prevents other groups
Part such as ethylene-methyl acrylate copolymer, the bridge flocculation of phenylethylene-maleic anhydride graft rubber polymers,
Affect coating surface quality and adhesive force；Anchoring group strengthens the absorption affinity of each component, improves each alternate compatible
Property, equally distributed stability, thus improve product plating after yield.
Preferably, described antioxidant is organic phosphites antioxidant and/or Hinered phenols antioxidant；
Preferably, described lubricant is pentaerythritol stearate.
Another aspect of the present invention provides a kind of method preparing above-mentioned polycarbonate compositions, prepared by the method
Polycarbonate compositions has the resistance to cracking of good ultralow temperature, plating resistant to corrosion cracking and embedded steel disc proof stress
Cracking performance, galvanization coating adhesion is strong, and plating quality is good.
A kind of method preparing above-mentioned polycarbonate compositions, comprises the following steps:
(1) in parts by mass, by polycarbonate resin 20～85 parts, organosilicon/Copolycarbonate
10～80 parts, ethylene/methyl acrylate copolymer 0.2～10 parts, phenylethylene/maleic anhydride graft rubber polymers
0.3～10 part, hyper-dispersant 0.2～2 parts, optionally antioxidant 0.1～0.5 part and optionally lubricant 0.2～1.0
Part stirs, and prepares mixture；
(2) described mixture is put into double screw extruder is carried out add heat fusing and extruding pelletization, prepare
Merlon.
Preferably, before step (1), also include that step (1 ') reduces at the melt zone of double screw extruder
Gear block, increases ZME type toothed thread element at mixing and homogenizing zone, makes double screw extruder be combined into low
The screw rod of shearing force high dispersive type.
The present invention uses the screw flight block permutation and combination of the low sheraing high dispersive of plastics double screw extruder to be blended
Shear technique, reduce and shear the impact on PC stress and improve the different component compatibility and dispersibility.
Preferably, step (2) detailed process is: put in double screw extruder by described mixture,
Vacuum pressure, for-0.04～-0.1Mpa, under the conditions of rotating speed is 400～800r/min, carries out adding heat fusing, being blended
Plasticizing and shear dispersion, extruding pelletization at 220～290 DEG C, through traction tie rod, tank cooling, dehydration and
Pelletizing, prepares the Merlon of electrodepositable.
In the present invention, vacuum pressure is-0.04～-0.1MPa, it is ensured that in mixture, low molecule and moisture content are pumped,
Reduce internal low molecule and the content of moisture content in blend, reduce low molecule and the moisture content impact on product stress.
Compared with prior art, beneficial effects of the present invention: the Merlon group of the electrodepositable that the present invention provides
Compound, in parts by mass, is mainly prepared from the following materials: polycarbonate resin 20～85 parts, organosilicon
/ Copolycarbonate 10～80 parts, ethylene/methyl acrylate copolymer 0.2～10 parts, styrene/maleic acid
Acid anhydride graft rubber polymers 0.3～10 parts and hyper-dispersant 0.2～2 parts.This polycarbonate compositions has well
The resistance to cracking of ultralow temperature, plating resistant to corrosion cracking and embedded steel disc stress crack resistance performance, galvanization coating combine
Power is strong, and plating quality is good.
Detailed description of the invention
Further illustrate technical scheme the most in conjunction with the embodiments.
Embodiment 1: the polycarbonate compositions of the present embodiment electrodepositable, in parts by mass, including following group
Point:
Prepare above-mentioned polycarbonate compositions method to comprise the following steps:
Screw combinations melt zone at double screw extruder reduces gear block, increases ZME at mixing and homogenizing zone
Type toothed thread element, is combined into the screw rod of low-shearing force high dispersive type by double screw extruder；
Said components being stirred, prepare mixture, that is put into by described mixture after above-mentioned levelling is double
In screw extruder, 290 DEG C, under the conditions of rotating speed is 400r/min, carry out adding heat fusing, making mixture
Plasticizing being blended, shears dispersion, extruding pelletization under vacuum pressure is-0.04Mpa, through traction tie rod, tank
Cooling, dehydration, pelletizing, prepare the polycarbonate compositions of electrodepositable.
Embodiment 2: the polycarbonate compositions of the present embodiment electrodepositable, in parts by mass, including following group
Point:.
Prepare above-mentioned flame retardant polycarbonate composition method as follows:
Screw combinations melt zone at double screw extruder reduces gear block, does not use instead at mixing and homogenizing zone
To screwing element, double screw extruder is combined into the screw rod of low-shearing force high dispersive type；
Said components being stirred, prepare mixture, that is put into by described mixture after above-mentioned levelling is double
In screw extruder, at 220 DEG C, under the conditions of rotating speed is 800r/min, carries out adding heat fusing, be mixing
Thing is blended plasticizing, shears dispersion, extruding pelletization under vacuum pressure is-0.04Mpa, through traction tie rod, water
Groove cooling, dehydration, pelletizing, prepare the polycarbonate compositions of electrodepositable.
Embodiment 1～3 and polycarbonate compositions component (in parts by mass) such as table 1 institute of comparative example 1～5
Showing, preparation method is same as in Example 1:
Table 1
Performance test: the polycarbonate compositions that will prepare in embodiment 1～3 and comparative example 1～5, one
Part prepares ASTM standard batten, tests according to testing standard；Another part is pressed identical through injection machine
The phone housing of Shooting Technique molding embedded metal sheet, carries out electroplating, the test such as bending and spraying.Result is such as
Shown in table 2.
Table 2
From table 1～2 it can be seen that compared with comparative example 1, embodiment is added with organosilicon/Merlon common
Polymers, the polycarbonate compositions of embodiment 1 has following performance: 1, impact strength is good, especially has
Good tolerance to cold and resistance to Organic chemical solvents, can resist the powerful planted agent that it is produced by activity organic solvent
Power and destruction power；2, plating performance is good and sprays drop test percent of pass height after UV, after plating
When product spraying UV oil is as protecting film, can prevent organic solvent from the erosion of coating and ground being ftractureed and cause
Brittle failure；
Compared with embodiment 1 and embodiment 3, embodiment 2 carries out further optimization process to each constituent content,
The resistance to cracking of polycarbonate compositions ultralow temperature and solvent resistant stress cracking performance that embodiment 2 obtains have had one
Step promotes；Compared with contrast 2, embodiment 2 is added with hyper-dispersant, prepared polycarbonate compositions
It is molded into workpiece and there is drop test percent of pass after good coating adhesion and spraying UV；With comparative example 3 phase
Ratio, embodiment 2 use organosilicon/Copolycarbonate, ethylene/methyl acrylate copolymer and styrene/
Maleic anhydride graft rubber polymers is modified to carbonate resin, and the polycarbonate compositions of embodiment 2 has
The resistance to cracking of good ultralow temperature, plating organic solvent-resistant cracking and coating adhesion performance, imitate without surface pearly-lustre
Should；
Comparative example 4 is added with ethylene/methyl acrylate copolymer and phenylethylene/maleic anhydride graft rubber gathers
Compound thus have preferable plating performance, but it is on the low side not add its coating adhesion hundred lattice yield of hyper-dispersant, does not has
Adding organosilicon/Copolycarbonate, after spraying UV, drop test percent of pass is the most on the low side；With comparative example
4 compare, and embodiment 3 uses organosilicon/Copolycarbonate and hyper-dispersant, prepared Merlon group
Compound has the resistance to cracking of good ultralow temperature, plating organic solvent-resistant cracking and coating adhesion performance, spraying
After UV, drop test percent of pass is high；
Compared with comparative example 5, embodiment 3 adds organosilicon/Copolycarbonate and ethylene/methyl acrylate
Copolymer, prepared polycarbonate compositions has the resistance to cracking of ultralow temperature, plating organic solvent-resistant cracking and plating
Layer adhesion performance, keeps preferable toughness after electroplating and spraying.
The polycarbonate compositions of the present invention has a following performance:
Ultra-toughness resists cold stress crack resistant function: can be widely applied to need the ultra thin handset case flat plate electricity of spraying
Brain, communication equipment, means of transportation and LED energy-conservation periphery accessory, the severe sky such as the low temperature that seasons oneself to cold, high heat
Use under compression ring border.
Ultra-toughness chemically-resistant solvent stress cracking function: owing to PC chemical-resistant is poor, this products application is in anti-
In the presence of chemical drugs, only easily cause the medical apparatus and instruments that internal stress cracking is brittle, and solution high-temperature sterilization is led
The catabiosis of fracturing stricture of vagina, making PC apply in medical apparatus and instruments can expand rapidly.
Stress crack resistant electrodepositable function: prevent common PC from electroplating cracking hardening, brittle, can spray absolutely simultaneously
Edge ink carries out parcel plating.This function has good metallic luster after making PC surface metalation (plating)
And high intensity, it is applied to high texture decorative automobile parts；High texture phone housing, panel computer.Surface
PC after metallization plating is also used as shielding electromagnetic waves material, in appliance computer.
Embedded steel disc function: this product has superpower stress crack resistant and tough sexuality, can be embedded during injection
Metal steel disc, the coefficient of expansion preventing both is different, when temperature raises, solvent when electro-plating liquid or spraying
Can be seeped in gap, plastic component structure is impacted.For phone housing, notebook computer, in combination with
The difficult conduction insulating properties of PC, makes electronic package, adapter for computer, electronics, the communications field.
It should be noted that and understand, in the spirit without departing from appended claims the present invention for required protection
In the case of scope, it is possible to the present invention of foregoing detailed description is made various modifications and improvements.Therefore,
The scope of claimed technical scheme is not limited by given any specific exemplary teachings.
Applicant states, the present invention illustrates detailed process equipment and the technique of the present invention by above-described embodiment
Flow process, but the invention is not limited in above-mentioned detailed process equipment and technological process, i.e. do not mean that the present invention
Have to rely on above-mentioned detailed process equipment and technological process could be implemented.Person of ordinary skill in the field should
This understands, any improvement in the present invention, and the equivalence of raw material each to product of the present invention is replaced and auxiliary element
Interpolation, concrete way choice etc., within the scope of all falling within protection scope of the present invention and disclosure.
Claims (17)
1. the polycarbonate compositions of an electrodepositable, it is characterised in that in parts by mass, mainly by following
Raw material is prepared from:
Polycarbonate compositions the most according to claim 1, it is characterised in that described Merlon group
The raw material of compound also includes: antioxidant 0.1～0.5 part and lubricant 0.2～1.0 parts.
Polycarbonate compositions the most according to claim 1 and 2, it is characterised in that in parts by mass,
Mainly it is prepared from the following materials:
Polycarbonate compositions the most according to claim 1, it is characterised in that described polycarbonate resin
Fat is linear bisphenol A Merlon, and described polycarbonate resin molecular weight is 18000～40000Da.
Polycarbonate compositions the most according to claim 1, it is characterised in that described organosilicon/poly-
Carbonate copolymer is that end group contains bis-phenol silicone oil or the Merlon of hydroxy silicon oil grafting.
Polycarbonate compositions the most according to claim 1, it is characterised in that described organosilicon/poly-
Carbonate copolymer is the Copolycarbonate that aminomethyl phenyl is organic-silicon-modified, described organosilicon/Merlon
In copolymer, silicone content is 5～30%wt.
Polycarbonate compositions the most according to claim 1, it is characterised in that described ethylene/propene
In acid methyl terpolymer, methyl acrylate content is the 15～35%wt of ethylene/methyl acrylate copolymer.
Polycarbonate compositions the most according to claim 1, it is characterised in that described styrene/horse
Maleic anhydride grafted rubber polymer is phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers.
Polycarbonate compositions the most according to claim 8, it is characterised in that described styrene-horse
Carrying out phenylethylene-maleic anhydride content in anhydride-acrylonitrile-butadiene copolymers is phenylethylene-maleic anhydride-propylene
The 25～35%wt of nitrile-butadiene polymer, acrylonitrile content is phenylethylene-maleic anhydride-acrylonitrile-butadiene
The 10～20%wt of polymer, butadiene content is phenylethylene-maleic anhydride-acrylonitrile-butadiene copolymers
40～65%wt.
Polycarbonate compositions the most according to claim 1, it is characterised in that described hyper-dispersant
It is made up of 5～20%wt anchoring groups and 80～95%wt solvent chains.
11. polycarbonate compositions according to claim 10, it is characterised in that described anchoring group
Selected from-R2N、-R3N+、-COOH、-COO-、-SO3H、-SO2-、-PO4 2-, polyamine, polyhydric alcohol or
One in polynary ether or at least two.
12. polycarbonate compositions according to claim 10, it is characterised in that described solvent chain
One in polyester, polyethers, polyolefin or polyacrylate or at least two.
13. polycarbonate compositions according to claim 2, it is characterised in that described antioxidant is
Organic phosphites antioxidant and/or Hinered phenols antioxidant.
14. polycarbonate compositions according to claim 2, it is characterised in that described lubricant is
Pentaerythritol stearate.
15. 1 kinds of methods preparing polycarbonate compositions described in claim 1, it is characterised in that include
Following steps:
(1) in parts by mass, by polycarbonate resin 20～85 parts, organosilicon/Copolycarbonate
10～80 parts, ethylene/methyl acrylate copolymer 0.2～10 parts, phenylethylene/maleic anhydride graft rubber polymers
0.3～10 part, hyper-dispersant 0.2～2 parts, optionally antioxidant 0.1～0.5 part and optionally lubricant 0.2～1.0
Part stirs, and prepares mixture；
(2) described mixture is put into double screw extruder is carried out add heat fusing and extruding pelletization, prepare
Merlon.
16. preparation methoies according to claim 15, it is characterised in that before step (1),
Also include that step (1 ') reduces gear block at the melt zone of double screw extruder, increase ZME at mixing and homogenizing zone
Type toothed thread element, makes double screw extruder be combined into the screw rod of low-shearing force high dispersive type.
17. preparation methoies according to claim 15, it is characterised in that step (2) detailed process
For: described mixture is put in double screw extruder, vacuum pressure be-0.04～-0.1Mpa, rotating speed
Under the conditions of being 400～800r/min, carry out adding heat fusing, plasticizing being blended and shears dispersion, at 220～290 DEG C
Lower extruding pelletization, through traction tie rod, tank cooling, dehydration and pelletizing, prepares the Merlon group of electrodepositable
Compound.
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|---|---|---|---|---|
| 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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2015
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Patent 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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