CN103408912A - PC/ASA alloy and preparation method thereof - Google Patents
PC/ASA alloy and preparation method thereof Download PDFInfo
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- CN103408912A CN103408912A CN2013103478735A CN201310347873A CN103408912A CN 103408912 A CN103408912 A CN 103408912A CN 2013103478735 A CN2013103478735 A CN 2013103478735A CN 201310347873 A CN201310347873 A CN 201310347873A CN 103408912 A CN103408912 A CN 103408912A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
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Abstract
The invention applies to the field of high polymer materials and provides PC/ASA alloy and a preparation method thereof. The PC/ASA alloy comprises the following components: 60-80 parts of PC, 5-15 parts of ASA, 1-5 parts of compatilizer, 3-6 parts of flexibilizer, 8-15 parts of flame retardant, 0.2-0.5 parts of flame retardant synergist and 0.2-2 parts of photostabilizer, wherein the weight-average molecular weight of the PC is 30,000-50,000; the density of the PC is 1.18-1.20 g/cm<3>; the ASA is the graft copolymer of acrylics rubber, acrylonitrile and phenethylene; the density of the ASA is 1.04-1.07 g/cm<3>; the content of the acrylics rubber of the ASA is 30-60%. The preparation method of the PC/ASA alloy comprises the following steps: mixing the components, performing extruding and granulating through a double-screw extruder. The PC/ASA alloy provided by the invention has the advantages of low internal stress, high ductility and good mechanical property.
Description
Technical field
The invention belongs to polymeric material field, relate in particular to a kind of PC/ASA Alloy And Preparation Method.
Background technology
Polycarbonate (polycarbonate, PC), be a kind of engineering plastics of excellent performance, is widely used in every field because it has excellent mechanical property, resistance to elevated temperatures and good flame retardant properties.Yet, on the other hand, polycarbonate also exist mobility, weathering resistance poor, easily produce the shortcomings such as internal stress cracking, these drawbacks limit its application space.For these shortcomings, people have done a lot of improvements.As by polycarbonate and other thermoplastic resins, these intermingling materials combine the advantage separately of polycarbonate and other resins usually, and can not affect the excellent specific property of polycarbonate self, have overcome again they self deficiency simultaneously.The PC-ABS alloy is as a kind of macromolecular material commonly used.Existing PC-ABS alloy, except having above-mentioned advantage, also comes with some shortcomings, as stronger as the internal stress of PC-ABS alloy, causes its toughness poor, and simultaneously its weathering resistance, ageing resistance are also poor.Existing these deficiencies of PC-ABS alloy are restricting the expansion of its application prospect.Therefore, be necessary to develop the more PC-ABS alloy of high-performance.
Acrylonitrile-styrene-acrylic ester (ASA) has good dimensional stability and higher notch shock.Simultaneously, compare with ABS, the weathering resistance that the adding of ASA can significantly improve alloy material, ultraviolet resistance etc. (approximately improving 10 times), therefore, ASA has very large application space in industries such as automobile, communication, electronics.If polycarbonate and acrylonitrile-styrene-acrylic ester are made to intermingling material, may obtain have excellent moulding processability, thermotolerance, weathering resistance and than the material of high impact resistance.Yet the impact property of the PC/ASA alloy material prepared by direct blend is undesirable, be necessary thus the PC/ASA alloy material is adopted to toughening technology.As CN102030976A and CN101486825A, introduced respectively the preparation method of halogen-free flame retardant PC/ASA and weather resistant PC/ASA alloy material, the alloy material of preparation has excellent over-all properties by this method.Yet the alloy that patent CN102030976A obtains does not demonstrate super high impact strength and high flame resistance, although patent CN101486825A can access the alloy of super high impact, can't obtain higher flame retardant properties.Therefore be necessary to develop a kind of PC/ASA alloy material that has good impact strength and high flame resistance concurrently.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of PC/ASA alloy material with high impact and high flame resistance, is intended to solve the problem that in prior art, PC/ASA alloy material performance can't satisfy the demands.
The embodiment of the present invention is achieved in that a kind of PC/ASA alloy, comprises the following component in parts by weight:
Wherein, described polycarbonate is that weight-average molecular weight is 3-5 ten thousand, and density is 1.18-1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.04-1.07g/cm
3, and wherein acrylate rubber like body content is 30%-60%.
Another purpose of the embodiment of the present invention is to provide a kind of preparation method of PC/ASA alloy, comprises the following steps:
Each component of above-mentioned PC/ASA alloy is mixed, form mixture;
Utilize twin screw extruder to described mixture extruding pelletization, the spout of described twin screw extruder is set as respectively to the temperature of each section of die head: 140～160 ℃, a district, two 210～230 ℃, 190～210 190～210 ℃， 4th district, ℃， 3rd district, districts, five 210～230 ℃, districts, six 210～230 ℃, 220～240 220～240 ℃， 8th district, ℃， 7th district, districts, 230～240 ℃ of heads, the rotating speed of described double-screw extruder screw are 250～300 rev/mins.
PC/ASA alloy material provided by the invention be take PC and ASA and is resin matrix, by adding organosilicon toughner, effectively reduces the internal stress of resin matrix, has increased the toughness of PC/ASA alloy material; Styrene-maleic anhydride (MALEIC ANHYDRIDE) multipolymer makes as compatilizer that each component is intermolecular has an effect and mutually combine, and forms constitutionally stable PC/ASA alloy material, makes prepared polyblend have good mechanical property; The embodiment of the present invention reduces the consumption of phosphoric acid ester fire retardant greatly on the other hand, has significantly improved the resistance toheat of this alloy.
Embodiment
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention provides the alloy material of a kind of PC and ASA, comprises following component (in parts by weight):
Wherein, described polycarbonate is that weight-average molecular weight is 3-5 ten thousand, and density is 1.18-1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.04-1.07g/cm
3, and wherein acrylate rubber like body content is 30%-60%.
Particularly, in PC/ASA alloy material of the present invention, described compatilizer can be Zelan 338 (SMA), wherein maleic anhydride content is 15%-30%, also can be one or more in the graft copolymer (PS-g-MAH) of graft copolymer (ASA-g-MAH), vinylbenzene and maleic anhydride of ABS grafted maleic anhydride (ABS-g-MAH), ASA and maleic anhydride, wherein the content of the content of maleic anhydride in compatilizer is 3-30wt%.
It should be noted that the degree (%) used in specification sheets of the present invention, unless specified otherwise is arranged, otherwise all in weight percentage.
Particularly, in PC/ASA alloy material of the present invention, described toughner is that organosilicon/vinylformic acid is core, and methyl methacrylate is the nucleocapsid structure body of shell, and wherein silicone content is 10%-30%.
In the embodiment of the present invention, toughness reinforcing dose of organosilicon has nucleocapsid structure toughner, can significantly improve the weather resistance of alloy, and element silicon wherein can effectively be put forward heavy alloyed flame retardant properties.
Particularly, in PC/ASA alloy material of the present invention, described fire retardant can or have halogen fire retardant for halogen-free flame retardants.Wherein halogen-free flame retardants is the composition of phosphoric acid ester fire retardant and silicone flame retardant or Sulfonates fire retardant, and in the phosphoric acid ester fire retardant of halogen-free flame retardants, phosphorus content is greater than 9.0% by weight percentage; There is halogen fire retardant to can be bromide fire retardant, comprise brominated triazine based flame retardant, ten bromine class (TDE) fire retardants etc.
In the embodiment of the present invention, if use halogen-free flame-retardant system, can greatly reduce the consumption of halogen-free flame retardants by adding silicone flame retardant or Sulfonates fire retardant, significantly improve simultaneously the flame retarding efficiency of gained alloy material.If use when the halogen fire retardant system is arranged, can reach high heat-resisting effect.
Particularly, in PC/ASA alloy material of the present invention, described fire retarding synergist is the SAN(styrene-acrylonitrile) tetrafluoroethylene that coats, wherein, in this fire retarding synergist in SAN the mass ratio of vinylbenzene and vinyl cyanide be 4:1-2:1, and the mass ratio of tetrafluoroethylene and SAN is 1:1-1:3, thereby tetrafluoroethylene fibrosis under the effect of the shearing force that is subject to screw rod forms reticulated structure, plays the effect of anti-drippage.
Particularly, in PC/ASA alloy material of the present invention, described photostabilizer is the benzotriazole category light absorber, as UV-5411 (2 (the tertiary octyl phenyl of 2-hydroxyl-5-) benzotriazole), utilize this kind photostabilizer can shielding, uv reflectance or absorb ultraviolet ray and be translated into harmless heat energy.
In the embodiment of the present invention, the PC/ASA alloy material also can contain the component that lubricant and oxidation inhibitor etc. are conducive to improve the alloy material performance.Use therein lubricant can be ethene stearylamide or ethylene bis stearamide, as: EBS etc.
The oxidation inhibitor used in PC/ASA alloy material of the present invention can-3-(3-tertiary butyl-4-hydroxy-5-aminomethyl phenyl two as triglycol) vinyl cyanide or tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) a kind of in ester, or by four [3-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester mix by the weight ratio of 1:1-1:3.
The PC/ASA alloy material of the embodiment of the present invention be take PC and ASA and is resin matrix, by adding organosilicon toughner, effectively reduces the internal stress of resin matrix, has increased the toughness (comprising low-temperature flexibility) of PC/ASA alloy material; Use phenylethylene-maleic anhydride (maleic anhydride) as compatilizer, wherein contain can with maleic anhydride and the vinylbenzene of PC and the effective combination of ASA, make the intermolecular also combination of having an effect of each component, thereby form constitutionally stable PC/ASA alloy material, make prepared alloy material have good mechanical property; Select efficient halogen-free silicon-type or sulfonate fire retardant and the effective combination of phosphoric acid ester fire retardant, make the flame retardant properties of gained alloy material reach the requirement of U.S. UL945VA level, simultaneously, greatly reduce the consumption of phosphoric acid ester fire retardant, and effectively improved the resistance toheat of this alloy.
The embodiment of the present invention also provides the preparation method of the alloy material of a kind of PC and ASA, and the method comprises the following steps:
S01. take each component of the alloy material that forms PC of the present invention and ASA, for example take each component of following parts by weight:
Above-mentioned each component that S02. will take is poured in agitation vat and is stirred 8-20min, and mixing speed is 400-500r/min, obtains mixture;
S03. the said mixture material is adopted to the twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 140～160 ℃, a district, two 210～230 ℃, 190～210 190～210 ℃， 4th district, ℃， 3rd district, districts, five 210～230 ℃, districts, six 210～230 ℃, 220～240 220～240 ℃， 8th district, ℃， 7th district, districts, 230～240 ℃ of heads, the rotating speed of described double-screw extruder screw are 250～300 rev/mins.
The method that the embodiment of the present invention provides is easy and simple to handle.
Below the present invention will be described in detail by specific embodiment.
Embodiment 1
1. in following ratio, take each component, total mass is 5Kg:
Wherein above-mentioned polycarbonate is that weight-average molecular weight is 40,000, and density is 1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.07g/cm
3, and wherein acrylate rubber like body content is 50%;
Wherein above-mentioned fire retarding synergist is the tetrafluoroethylene that SAN coats, and wherein the mass ratio of tetrafluoroethylene and SAN is 1:1, and in SAN, the mass ratio of vinylbenzene and vinyl cyanide is 4:1.
2. above-mentioned each component that will take is poured in agitation vat and is stirred 20min, and mixing speed is 500r/min, obtains mixture;
3. the said mixture material is adopted to the twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 150 ℃, a district, two 220 ℃, 200 200 ℃， 4th district, ℃， 3rd district, districts, five 220 ℃, districts, six 220 ℃, 230 230 ℃， 8th district, ℃， 7th district, districts, 240 ℃ of heads, the rotating speed of described double-screw extruder screw are 300 rev/mins.
Embodiment 2
1. in following ratio, take each component, total mass is 5Kg:
Wherein above-mentioned polycarbonate is that weight-average molecular weight is 40,000, and density is 1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.07g/cm
3, and wherein acrylate rubber like body content is 50%;
In above-mentioned SMA, maleic anhydride content is 20%;
Above-mentioned fire retarding synergist is the SAN(styrene-acrylonitrile) tetrafluoroethylene that coats, and the mass ratio of tetrafluoroethylene and SAN is 1: 2, and in this SAN, the mass ratio of vinylbenzene and vinyl cyanide is 3: 1.
2. above-mentioned each component that will take is poured in agitation vat and is stirred 15min, and mixing speed is 450r/min, obtains mixture;
3. the said mixture material is adopted to the twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 160 ℃, a district, two 230 ℃, 210 210 ℃， 4th district, ℃， 3rd district, districts, five 230 ℃, districts, six 210 ℃, 240 230 ℃， 8th district, ℃， 7th district, districts, 230 ℃ of heads, the rotating speed of described double-screw extruder screw are 280 rev/mins.
Embodiment 3
1. in following ratio, take each component, total mass is 5Kg:
Wherein above-mentioned polycarbonate is that weight-average molecular weight is 40,000, and density is 1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.07g/cm
3, and wherein acrylate rubber like body content is 50%;
In above-mentioned SMA, maleic anhydride content is 30%;
Above-mentioned toughner B take organosilicon/vinylformic acid to be core, and methyl methacrylate is that hull shape becomes nucleocapsid structure, and wherein silicone content is 10%-30%.
2. above-mentioned each component that will take is poured in agitation vat and is stirred 10min, and mixing speed is 400r/min, obtains mixture;
3. the said mixture material is adopted to the twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 140 ℃, a district, two 220 ℃, 200 200 ℃， 4th district, ℃， 3rd district, districts, five 220 ℃, districts, six 210 ℃, 230 230 ℃， 8th district, ℃， 7th district, districts, 230 ℃ of heads, the rotating speed of described double-screw extruder screw are 260 rev/mins.
Embodiment 4
1. in following ratio, take each component, total mass is 5Kg:
Wherein above-mentioned polycarbonate is that weight-average molecular weight is 40,000, and density is 1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.07g/cm
3, and wherein acrylate rubber like body content is 50%;
In above-mentioned compatilizer ABS grafted maleic anhydride, maleic anhydride content is 20%;
Above-mentioned fire retarding synergist is the SAN(styrene-acrylonitrile) tetrafluoroethylene that coats, and the mass ratio of tetrafluoroethylene and SAN is 1: 2, and in this SAN, the mass ratio of vinylbenzene and vinyl cyanide is 3: 1.
2. above-mentioned each component that will take is poured in agitation vat and is stirred 20min, and mixing speed is 500r/min, obtains mixture;
3. the said mixture material is adopted to the twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 150 ℃, a district, two 220 ℃, 200 200 ℃， 4th district, ℃， 3rd district, districts, five 220 ℃, districts, six 220 ℃, 230 230 ℃， 8th district, ℃， 7th district, districts, 240 ℃ of heads, the rotating speed of described double-screw extruder screw are 300 rev/mins.
Embodiment 5
1. in following ratio, take each component, total mass is 5Kg:
Wherein above-mentioned polycarbonate is that weight-average molecular weight is 40,000, and density is 1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.07g/cm
3, and wherein acrylate rubber like body content is 50%;
In above-mentioned compatilizer ABS grafted maleic anhydride, maleic anhydride content is 15%;
Above-mentioned fire retarding synergist is the SAN(styrene-acrylonitrile) tetrafluoroethylene that coats, and the mass ratio of tetrafluoroethylene and SAN is 1: 2, and in this SAN, the mass ratio of vinylbenzene and vinyl cyanide is 3: 1.
2. above-mentioned each component that will take is poured in agitation vat and is stirred 20min, and mixing speed is 500r/min, obtains mixture;
3. the said mixture material is adopted to the twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 150 ℃, a district, two 220 ℃, 200 200 ℃， 4th district, ℃， 3rd district, districts, five 220 ℃, districts, six 220 ℃, 230 230 ℃， 8th district, ℃， 7th district, districts, 240 ℃ of heads, the rotating speed of described double-screw extruder screw are 300 rev/mins.
The comparative example 1
1. in following ratio, take each component, total mass is 5Kg:
Wherein above-mentioned polycarbonate is that weight-average molecular weight is 40,000, and density is 1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.07g/cm
3, and wherein acrylate rubber like body content is 50%;
Above-mentioned toughner B take organosilicon/vinylformic acid to be core, and methyl methacrylate is that hull shape becomes nucleocapsid structure, and wherein silicone content is 10%-30%;
Above-mentioned fire retarding synergist is the SAN(styrene-acrylonitrile) tetrafluoroethylene that coats, and the mass ratio of tetrafluoroethylene and SAN is 1: 2, and in this SAN, the mass ratio of vinylbenzene and vinyl cyanide is 3: 1.
2. above-mentioned each component that will take is poured in agitation vat and is stirred 15min, and mixing speed is 450r/min, obtains mixture;
3. the said mixture material is adopted to the twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 160 ℃, a district, two 230 ℃, 210 210 ℃， 4th district, ℃， 3rd district, districts, five 230 ℃, districts, six 210 ℃, 240 230 ℃， 8th district, ℃， 7th district, districts, 230 ℃ of heads, the rotating speed of described double-screw extruder screw are 280 rev/mins.
The comparative example 2
1. in following ratio, take each component, total mass is 5Kg:
Wherein above-mentioned polycarbonate is that weight-average molecular weight is 40,000, and density is 1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.07g/cm
3, and wherein acrylate rubber like body content is 50%.
Above-mentioned fire retarding synergist is the SAN(styrene-acrylonitrile) tetrafluoroethylene that coats, and the mass ratio of tetrafluoroethylene and SAN is 1: 2, and in this SAN, the mass ratio of vinylbenzene and vinyl cyanide is 3: 1.
2. above-mentioned each component that will take is poured in agitation vat and is stirred 10min, and mixing speed is 400r/min, obtains mixture;
3. the said mixture material is adopted to the twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 140 ℃, a district, two 220 ℃, 200 200 ℃， 4th district, ℃， 3rd district, districts, five 220 ℃, districts, six 210 ℃, 230 230 ℃， 8th district, ℃， 7th district, districts, 230 ℃ of heads, the rotating speed of described double-screw extruder screw are 260 rev/mins.
The comparative example 3
1. in following ratio, take each component, total mass is 5Kg:
Wherein above-mentioned polycarbonate is that weight-average molecular weight is 40,000, and density is 1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.07g/cm
3, and wherein acrylate rubber like body content is 50%.
2. above-mentioned each component that will take is poured in agitation vat and is stirred 20min, and mixing speed is 500r/min, obtains mixture;
3. the said mixture material is adopted to the twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 150 ℃, a district, two 220 ℃, 200 200 ℃， 4th district, ℃， 3rd district, districts, five 220 ℃, districts, six 220 ℃, 230 230 ℃， 8th district, ℃， 7th district, districts, 240 ℃ of heads, the rotating speed of described double-screw extruder screw are 300 rev/mins.
Performance test and evaluation:
Particle prepared by above-described embodiment 1-5 and comparative example 1-3 first in convection oven under the condition of 80-100 ℃ dry 2 hours, then will dried particle material make the standard testing batten with injection moulding machine and test.
(1) aging (weather-proof) test: use Xenon lamp weather resistance test box to test, its yield of radiation is 1.12kw/m
2, 24h is a cycle, and duration of test runs is 10 cycles (they being 240h), and in each cycle, 8h irradiates, and 16h does not irradiate, and the radiation amount in each cycle is 8.96kwh/m
2.Temperature during the proofing box internal radiation is 75 ℃, and the light source of employing is relatively that approach and the xenon arc lamp that install infrared filter glass additional of spectral distribution and sunlight, and irradiation finishes laggard circumstances in which people get things ready for a trip difference analysis and shock test.Wherein, notched Izod impact strength is tested by the ASTMD-256 standard.Specimen types is the I type, specimen size (mm): (63 ± 2) * (12.45 ± 0.2) * (3.1 ± 0.2); The breach type is category-A, and the breach residual thickness is 1.9mm; HDT(Heat deflectiontemperature, heat-drawn wire, reflection material thermal resistance) to test and use computermatic heat-drawn wire trier to carry out, condition is carried out according to ASTMD648, and test condition is 1.8MPa, unannealed, 6.4mm; Other performances are all tested according to ASTM standard batten.
(2) flame retardant test usage level testing vertical flammability instrument, test according to the UL94 standard.
Shown in the material properties test data following table 1 of embodiment 1-5 and comparative example (Comparative Examples) 1-3:
Table 1 material properties test data results
We can find out from upper table data, use toughness reinforcing dose of organosilicon, and the material at low temperature impact resistance is better, simultaneously toughness reinforcing dose of weather resistance that also affects material of organosilicon; SMA can be good at compatible PC/ASA, has higher impact property.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. PC/ASA alloy comprises the following component in parts by weight:
Wherein, described polycarbonate is that weight-average molecular weight is 3-5 ten thousand, and density is 1.18-1.20g/cm
3Polycarbonate, described acrylonitrile-styrene-acrylic ester is acrylate rubber like body and vinyl cyanide, cinnamic graft copolymer, density is 1.04-1.07g/cm
3, and wherein acrylate rubber like body content is 30wt%-60wt%.
2. PC/ASA alloy as claimed in claim 1, is characterized in that, described compatilizer is Zelan 338, and wherein maleic anhydride content is 15-30wt%; Perhaps described compatilizer is one or more in the graft copolymer of graft copolymer, vinylbenzene and maleic anhydride of ABS grafted maleic anhydride, ASA and maleic anhydride, and wherein the content of maleic anhydride in described compatilizer is 3-30wt%.
3. PC/ASA alloy as claimed in claim 1, is characterized in that, described toughner is that organosilicon/vinylformic acid is core, and methyl methacrylate is the nucleocapsid structure body of shell, and wherein silicone content is 10-30wt%.
4. PC/ASA alloy as claimed in claim 1, is characterized in that, described fire retardant is halogen-free flame retardants or halogen fire retardant is arranged.
5. PC/ASA alloy as claimed in claim 1, is characterized in that, described fire retarding synergist is the tetrafluoroethylene that styrene-acrylonitrile coats, and in described fire retarding synergist, the mass ratio of tetrafluoroethylene and styrene-acrylonitrile is 1:1-1:3.
6. the preparation method of a PC/ASA alloy comprises the following steps:
Take each component formed as the described PC/ASA alloy of any one in claim 1-5, be mixed to get mixture;
By described mixture twin screw extruder extruding pelletization, the spout of wherein said twin screw extruder is respectively to the temperature of each section of die head: 140～160 ℃, a district, two 210～230 ℃, 190～210 190～210 ℃， 4th district, ℃， 3rd district, districts, five 210～230 ℃, districts, six 210～230 ℃, 220～240 220～240 ℃， 8th district, ℃， 7th district, districts, 230～240 ℃ of heads, the rotating speed of described double-screw extruder screw are 250～300 rev/mins.
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| CN106883573A (en) * | 2015-12-15 | 2017-06-23 | 上海杰事杰新材料(集团)股份有限公司 | Polyamide polycarbonate alloy material and its preparation method and application |
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| CN106883573A (en) * | 2015-12-15 | 2017-06-23 | 上海杰事杰新材料(集团)股份有限公司 | Polyamide polycarbonate alloy material and its preparation method and application |
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| CN108117732A (en) * | 2016-11-28 | 2018-06-05 | 万华化学集团股份有限公司 | A kind of halogen-free and flame-retardant polycarbonate alloy and preparation method thereof |
| CN107674244A (en) * | 2017-06-10 | 2018-02-09 | 安徽科高新材料有限公司 | It is a kind of to be used to prepare composite of table tennis and preparation method thereof |
| CN110922737A (en) * | 2019-12-02 | 2020-03-27 | 天津金发新材料有限公司 | Low-temperature-resistant, light-aging-resistant, heat-resistant and flame-retardant ASA composition and preparation method and application thereof |
| CN112646341A (en) * | 2020-11-27 | 2021-04-13 | 张家港大塚化学有限公司 | Preparation process of halogen-free flame-retardant, antistatic, high-wear-resistance and high-strength PC/ASA alloy |
| CN112662157A (en) * | 2020-12-14 | 2021-04-16 | 深圳毅彩鸿翔新材料科技有限公司 | ASA resin plastic for vehicle bumper and preparation method thereof |
| CN113354938A (en) * | 2021-07-06 | 2021-09-07 | 武汉金发科技有限公司 | Black weather-resistant wet-heat-aging-resistant PC/ASA alloy and preparation method thereof |
| CN114031923A (en) * | 2021-12-16 | 2022-02-11 | 广东格瑞新材料股份有限公司 | Weather-resistant and high-toughness polycarbonate composite material and preparation method thereof |
| CN115785639A (en) * | 2022-11-22 | 2023-03-14 | 中广核俊尔(浙江)新材料有限公司 | High-weather-resistance permanent antistatic flame-retardant PC/ASA alloy material and preparation method thereof |
| CN115785639B (en) * | 2022-11-22 | 2024-04-30 | 中广核俊尔(浙江)新材料有限公司 | High-weather-resistance permanent antistatic flame-retardant PC/ASA alloy material and preparation method thereof |
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