CN104927328A - Polycarbonate resin composition with nano-scale dispersed phase state and preparation method therefor - Google Patents
Polycarbonate resin composition with nano-scale dispersed phase state and preparation method therefor Download PDFInfo
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- CN104927328A CN104927328A CN201510213149.2A CN201510213149A CN104927328A CN 104927328 A CN104927328 A CN 104927328A CN 201510213149 A CN201510213149 A CN 201510213149A CN 104927328 A CN104927328 A CN 104927328A
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- resin composition
- polycarbonate
- poly carbonate
- carbonate resin
- san
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- 0 CCc1cc(C(C)(C)c(cc2CI)cc(C)c2[U]I(OC)=Cl)cc(*)c1C Chemical compound CCc1cc(C(C)(C)c(cc2CI)cc(C)c2[U]I(OC)=Cl)cc(*)c1C 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
-
- 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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides a polycarbonate resin composition with a nano-scale dispersed phase state and a preparation method therefor. The composition contains the following ingredients in parts by weight: (a) 50-70 parts of bisphenol A polycarbonate (BPAPC) resin, (b) 20-50 parts of styrene-acrylonitrile (SAN) copolymer, (c) 0-10 parts of toughening agent and (d) 1-10 parts of compatibilizer. The polycarbonate resin composition is prepared through premixing BPAPC, SAN, the toughening agent and the compatibilizer in a medium-speed mixer, and then, feeding the premix to a twin-screw extruder for melt extrusion and granulation. Compared with the prior art, the polycarbonate resin composition with the nano-scale dispersed phase state and the preparation method therefor have the following technical characteristics that the phenomenon of die swelling during the extrusion of PC and SAN is avoided; in a microscopic phase state, SAN is uniformly dispersed in the PC matrix in a nano-scale manner; and the macroscopic mechanical properties of the resin composition are greatly improved.
Description
Technical field
The present invention relates to a kind of thermoplastic resin composition and preparation method thereof, belong to processing of high molecular material technical field.
Background technology
Polymer Blends co-mixing system generally has the advantage such as performance optimization, cost reduction and is more and more subject to commercialization and payes attention to, be widely used in automobile, household electrical appliances, the field such as electric.PC/ABS resin combination just belongs to the very important heterogeneous system of this class.
As everyone knows, for blend polymer, small and disperse phase to be usually conducive to the lifting of performance uniformly, the Phase stracture reaching nanoscale dispersion also can bring a lot of beyond thought excellent properties usually due to nano effect.For PC/ABS system, interaction energy between the matrix component SAN of wherein PC and ABS be on the occasion of, PC and SAN is inconsistent, SAN usually with micron order (2.0 ~ 3.0 μm) size dispersion in PC matrix, on the one hand, make the extrusion pressure of PC/SAN very unstable, occur die swelling phenomenon; On the other hand, the resin combination mechanical property of preparation is not good.In order to improve the impact property of PC/SAN, usually to improve the content of ABS rubber or toughner, the rigidity of expendable material for cost.Such as patent publication No. is the Chinese invention patent of CN103772936A, prepares high tenacity PC/ABS alloy by the method for a large amount of body ABS and latex A BS of composite use; Also interpolation three components compatilizer is had to improve the consistency between PC and SAN in prior art.Such as patent publication No. is the Chinese invention patent of CN1580126A, by using ABS/PP grafted maleic anhydride to prepare PC/ABS alloy as the compatilizer of PC/ABS, and not gained alloy heat-resisting not good.Visible, PC/ABS resin combination prepared by prior art is difficult to the balance reaching impact, rigidity, heat-resisting each side mechanical property.The object of the invention is for deficiency of the prior art, a kind of poly carbonate resin composition and preparation method thereof with nanoscale dispersion phase, excellent in mechanical performance is provided.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of poly carbonate resin composition and preparation method thereof with nanoscale dispersion phase.
The present invention is achieved by the following technical solutions:
Have a poly carbonate resin composition for nanoscale dispersion phase, it comprises the component of following weight part:
Wherein, described compatilizer is tetramethyl bisphenol-a polycarbonate and take tetramethyl bisphenol-a polycarbonate as the multipolymer of synthesis unit, and in described multipolymer, the weight percentage of tetramethyl bisphenol-a polycarbonate is not less than 60%.
Preferably, described tetramethyl bisphenol-a polycarbonate, molecular structural formula is as follows:
Wherein n=30 ~ 50.
Preferably, described take tetramethyl bisphenol-a polycarbonate as the multipolymer of synthesis unit be tetramethyl bisphenol-a polycarbonate-polymethyl methacrylate copolymer, tetramethyl bisphenol-a polycarbonate-dimethyl bisphenol-a polycarbonate multipolymer, tetramethyl bisphenol-a polycarbonate-bisphenol-a polycarbonate multipolymer.
Preferably, in described styrene-acrylonitrile copolymer, the fine weight percentage of propylene is no more than 30%.
Preferably, described toughner is Acrylnitrile-Butadiene-Styrene or MBS.
Preferably, described toughner median size is 50 ~ 500nm, and divinyl weight percentage is 40 ~ 70%.
Preferably, in described Acrylnitrile-Butadiene-Styrene, divinyl weight percentage is 40 ~ 60%, and vinylbenzene weight percentage is 25 ~ 50%, and vinyl cyanide weight percentage is 10 ~ 15%.
A preparation method for poly carbonate resin composition as described in the present invention, it comprises the following steps:
By the abundant pre-mixing in high-speed mixer of each component;
The main feeding of mixed mixture from twin screw extruder is entered, through melt extruding, cool, drying, pelletizing obtain sample.
The present invention is by selecting suitable compatilizer, improve the interfacial property between PC/SAN, reduce the phase size of disperse phase SAN, make it reach nanometer phase, not only improve the die swelling phenomenon of PC/SAN extrusion, the comprehensive mechanical property of the resin combination of acquisition is very excellent.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the TEM photo of the product of embodiments of the invention 3.
Embodiment
Below embodiments of the invention are elaborated: the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Poly carbonate resin composition of the present invention is the composition of bisphenol-a polycarbonate (BPAPC) and styrene-acrylonitrile (SAN) multipolymer, BPAPC and SAN is inconsistent substantially.The contriver of this patent finds through a large amount of experiments, and when after the hydrogen atom on methyl substituted phenyl ring, the consistency of PC and SAN can make moderate progress.Methyl quantity on dihydroxyphenyl propane benzene radicals is more, and the consistency of PC and SAN is better.When percentage composition >=60% of TMPC, the SAN component in PC/SAN resin combination is dispersed in PC matrix with about 500nm yardstick substantially, substantially improves processing stability and the impact property of PC/SAN resin combination; And the introducing of methyl can increase rigidity and the thermotolerance of PC further.
Embodiment 1 ~ 5 and comparative example 1 ~ 3
The starting material adopted are:
BPAPC, weight-average molecular weight is 3.5 ten thousand;
SAN, weight-average molecular weight is 120,000, and the weight percentage of vinyl cyanide is 24%;
ABS, the median size 300nm of particle, divinyl weight percentage is 50%, and vinyl cyanide weight percentage is 12%;
MBS, the median size 250nm of particle, divinyl weight percentage is 60%;
TMPC, weight-average molecular weight 4.5 ten thousand;
TMPC-PMMA1, weight-average molecular weight 10.8 ten thousand, TMPCwt%=74%;
TMPC-PMMA2, weight-average molecular weight 10.8 ten thousand, TMPCwt%=41%;
TMPC-DMPC1, weight-average molecular weight 2.8 ten thousand, TMPCwt%=83%.
TMPC-DMPC2, weight-average molecular weight 2.8 ten thousand, TMPCwt%=50%.
Take each component according to the parts by weight shown in table 1, adopt afterwards and prepare described poly carbonate resin composition with the following method:
Step 1, takes each component according to parts by weight;
Step 2, fully mixes 20min by each component, obtains mixture in high-speed mixer;
Step 3, enters the main feeding of mixture from twin screw extruder, through melt extruding, cool, drying, pelletizing, obtain described resin combination; The screw diameter of twin screw extruder is 35mm, and length-to-diameter ratio is 44, and controlling melt temperature is 280 ~ 300 DEG C, screw speed 500rpm.
As shown in table 1, have 8 formulas and carry out melt extruding, drawing grain cooling, preparation poly carbonate resin composition according to above-mentioned preparation method, extruded material is first used the Micro of tem observation resin combination; Then by material at 80 DEG C of dry 12h, ensure the water-intake rate <0.05% of resin before injection moulding, according to ASTM standard, under same injecting condition, be injection molded into batten, test the physicals of each resin combination.Wherein, the test procedure based on ASTM D-638 measures tensile property, draw speed 50mm/min; Test procedure based on ASTM D-790 measures flexural property, loading velocity 3mm/min; Test procedure based on ASTM D-256 measures when 23 DEG C 1/8 " Izod notched impact strength; Test procedure based on ASTM D-648 measures heat-drawn wire.
Table 1
As can be seen from the experimental result of embodiment 1 ~ 5, the poly carbonate resin composition prepared according to the present invention, on microcosmic, SAN disperse phase is dispersed in PC matrix with the yardstick of 200 ~ 800 nanometers, macroscopically has excellent stretching, impact and thermal characteristics.As can be seen from the experimental result of comparative example 1 ~ 3, when not adding TMPC in PC/SAN system or add the TMPC multipolymer of TMPC wt%<60%, the microcosmic phase domain of SAN obviously increases, and macro-mechanical performance also declines to some extent.Therefore, the present invention is by selecting suitable compatilizer (multipolymer of TMPC or TMPC wt% >=60%), improve the interfacial property between PC/SAN, reduce the phase size of disperse phase SAN, it is made to reach nanometer phase, as shown in Figure 1, not only improve the die swelling phenomenon of PC/SAN extrusion, the comprehensive mechanical property of the resin combination of acquisition is very excellent.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (8)
1. there is a poly carbonate resin composition for nanoscale dispersion phase, it is characterized in that, comprise the component of following weight part:
Wherein, described compatilizer is tetramethyl bisphenol-a polycarbonate and take tetramethyl bisphenol-a polycarbonate as the multipolymer of synthesis unit, and in described multipolymer, the weight percentage of tetramethyl bisphenol-a polycarbonate is not less than 60%.
2. poly carbonate resin composition as claimed in claim 1, it is characterized in that, described tetramethyl bisphenol-a polycarbonate, molecular structural formula is as follows:
Wherein n=30 ~ 50.
3. poly carbonate resin composition as claimed in claim 1, it is characterized in that, the multipolymer of described with tetramethyl bisphenol-a polycarbonate is synthesis unit is tetramethyl bisphenol-a polycarbonate-polymethyl methacrylate copolymer, tetramethyl bisphenol-a polycarbonate-dimethyl bisphenol-a polycarbonate multipolymer, tetramethyl bisphenol-a polycarbonate-bisphenol-a polycarbonate multipolymer.
4. poly carbonate resin composition as claimed in claim 1, it is characterized in that, in described styrene-acrylonitrile copolymer, the fine weight percentage of propylene is no more than 30%.
5. poly carbonate resin composition as claimed in claim 1, it is characterized in that, described toughner is Acrylnitrile-Butadiene-Styrene or MBS.
6. poly carbonate resin composition as claimed in claim 5, it is characterized in that, described toughner median size is 50 ~ 500nm, and divinyl weight percentage is 40 ~ 70%.
7. the poly carbonate resin composition as described in claim 5 or 6, it is characterized in that, in described Acrylnitrile-Butadiene-Styrene, divinyl weight percentage is 40 ~ 60%, vinylbenzene weight percentage is 25 ~ 50%, and vinyl cyanide weight percentage is 10 ~ 15%.
8. a preparation method for poly carbonate resin composition as claimed in claim 1, is characterized in that, comprises the following steps:
By the abundant pre-mixing in high-speed mixer of each component;
The main feeding of mixed mixture from twin screw extruder is entered, through melt extruding, cool, drying, pelletizing obtain sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510213149.2A CN104927328A (en) | 2015-04-28 | 2015-04-28 | Polycarbonate resin composition with nano-scale dispersed phase state and preparation method therefor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510213149.2A CN104927328A (en) | 2015-04-28 | 2015-04-28 | Polycarbonate resin composition with nano-scale dispersed phase state and preparation method therefor |
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| CN104927328A true CN104927328A (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510213149.2A Pending CN104927328A (en) | 2015-04-28 | 2015-04-28 | Polycarbonate resin composition with nano-scale dispersed phase state and preparation method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080120A (en) * | 2020-08-26 | 2020-12-15 | 武汉金发科技有限公司 | Polycarbonate alloy material and preparation method and application thereof |
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- 2015-04-28 CN CN201510213149.2A patent/CN104927328A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112080120A (en) * | 2020-08-26 | 2020-12-15 | 武汉金发科技有限公司 | Polycarbonate alloy material and preparation method and application thereof |
| CN112080120B (en) * | 2020-08-26 | 2022-10-14 | 武汉金发科技有限公司 | Polycarbonate alloy material and preparation method and application thereof |
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Application publication date: 20150923 |