CN102161820A - Wollastonite enhanced polycarbonate material and preparation method thereof - Google Patents
Wollastonite enhanced polycarbonate material and preparation method thereof Download PDFInfo
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- CN102161820A CN102161820A CN2011101259503A CN201110125950A CN102161820A CN 102161820 A CN102161820 A CN 102161820A CN 2011101259503 A CN2011101259503 A CN 2011101259503A CN 201110125950 A CN201110125950 A CN 201110125950A CN 102161820 A CN102161820 A CN 102161820A
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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 discloses a wollastonite enhanced polycarbonate material and a preparation method thereof. The wollastonite enhanced polycarbonate material comprises the following formula components in percentage by weight: 70-90% of polycarbonate resin, 5-20% of wollastonite, 3-6% of flexibilizer and 1-3% of wollastonite surface activator. The wollastonite enhanced polycarbonate material has good notch resistance performance and wear-resisting property, stable size, smooth and flat surface and comprehensive physical properties because all components within a proper range mutually act in the extrusion process. The preparation method of the wollastonite enhanced polycarbonate material is characterized in that extrusion and granulation are finished in one step by mixing reaction. The preparation method has the advantages of simple technology, high benefit and low cost, is convenient to operate and is suitable for industrial production.
Description
Technical field
The invention belongs to technical field of plastic, particularly a kind of wollastonite enhanced polycarbonate material and preparation method thereof.
Background technology
Existing polycarbonate material has good mechanical performance, thermomechanical property and electrical property, and excellent resistance to impact shock, rigidity, dimensional stability are arranged especially.But existing polycarbonate material when existing polycarbonate material is used for precision instrument, will cause the performance shakiness of precision instrument to breach sensitivity, wear resisting property deficiency.
At present, polycarbonate material often adopts glass fibre to carry out enhancing modified, but surface floating fiber is serious, and this surface floating fiber is more difficult, when utilizing this existing polycarbonate material injection-molded item, and the product size poor stability, surface irregularity, thus limited the range of application of polycarbonate material.Therefore, develop anti-breach excellent property, wear resistance, polycarbonate material that dimensional stability is high has crucial meaning.
Summary of the invention
The purpose of the embodiment of the invention is to overcome the above-mentioned deficiency of prior art, and a kind of anti-breach excellent property, wear resistance, wollastonite enhanced polycarbonate material that dimensional stability is high are provided.
And, a kind of preparation method of above-mentioned wollastonite enhanced polycarbonate material is provided.
In order to realize the foregoing invention purpose, technical scheme of the present invention is as follows:
A kind of wollastonite enhanced polycarbonate material comprises the recipe ingredient of following mass percent:
And a kind of wollastonite enhanced polycarbonate material preparation method comprises the steps:
Prescription according to above-mentioned wollastonite enhanced polycarbonate material takes by weighing polycarbonate resin, wollastonite, toughner and wollastonite surface active liquid respectively;
Described wollastonite and described wollastonite surface active liquid are mixed, obtain being activated the wollastonite mixture of processing;
In described wollastonite mixture, add described polycarbonate resin, toughner, stir and form mixture;
Described mixture is extruded, and granulation obtains described wollastonite enhanced polycarbonate material.
Above-mentioned wollastonite enhanced polycarbonate material interacts in extrusion by each component of proper content scope, makes that wollastonite enhanced polycarbonate material has good anti-breach performance, wear resisting property, dimensional stability, surfacing is smooth and comprehensive physicals.Wherein, toughner and polycarbonate resin acting in conjunction have improved the toughness of this wollastonite enhanced polycarbonate material, after adding wollastonite, make the shock resistance of this wollastonite enhanced polycarbonate material strengthen; Wollastonite makes polycarbonate have good dimensional stability and intensity; Wollastonite is carried out surface activation process can make that polycarbonate resin and wollastonite blend effect in the process of processing is better, make the microtexture of material more stable, improved the over-all properties of material.This wollastonite enhanced polycarbonate material preparation method adopts the disposable technology of finishing of mixing reaction extruding pelletization, and its preparation method technology is simple, and is easy to operate, high efficiency, and cost is low, is suitable for suitability for industrialized production.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is wollastonite enhanced polycarbonate material preparation method's of the present invention process flow diagram.
Embodiment
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides a kind of anti-breach excellent property, wear resistance, wollastonite enhanced polycarbonate material that dimensional stability is high.This wollastonite enhanced polycarbonate material comprises the recipe ingredient of following mass percent:
Like this, above-mentioned wollastonite enhanced polycarbonate material interacts in the extrusion moulding process by each component of proper content scope, makes that wollastonite enhanced polycarbonate material has good anti-breach performance, wear resisting property, dimensional stability, surfacing is smooth and comprehensive physicals.Wherein, toughner and polycarbonate resin acting in conjunction have improved the toughness of this wollastonite enhanced polycarbonate material, after adding wollastonite, make the shock resistance of this wollastonite enhanced polycarbonate material strengthen; Wollastonite makes polycarbonate have good dimensional stability and intensity; Wollastonite is carried out surface activation process can make that polycarbonate resin and wollastonite blend effect in the process of processing is better, make the microtexture of material more stable, improved the over-all properties of material.
Particularly, the molecular weight of above-mentioned polycarbonate resin is preferably 2～40,000 bisphenol A polycarbonate resin.Polycarbonate resin in this preferred molecular weight range further provides a good resin matrix for above-mentioned wollastonite enhanced polycarbonate material, the rheological properties that makes polycarbonate have to be more suitable for, be more conducive to the effect with wollastonite fibre, can make wollastonite enhanced polycarbonate material have better anti-breach performance, wear resisting property, dimensional stability.
Above-mentioned wollastonite is preferably acicular wollastonite, and this acicular wollastonite average aspect ratio 8～15, particle diameter are 5～20 μ m, and the pH value is 7～7.5.The wollastonite of this preferred characteristics can further keep the impact of polycarbonate, the pH value that is fit to can not influence the over-all properties of polycarbonate, make this wollastonite enhanced polycarbonate material have better dimensional stability and intensity, and wollastonite is nontoxic, chemical resistant properties is strong, can also excellent reinforcing property be arranged to electrical property, make wollastonite enhanced polycarbonate material have the excellent comprehensive performance.
Above-mentioned toughner is at least a in multipolymer, Polyurethane Thermoplastic Elastomer, methyl methacrylate and the divinyl of methacrylic ester and acrylate and the styrene copolymer.This preferred toughner and polycarbonate resin acting in conjunction have further improved the toughness of wollastonite enhanced polycarbonate material, make its shock resistance further strengthen.
It is 1: 1～2 the coupling agent and the mixed solution of thinner that above-mentioned wollastonite surface active liquid is preferably volume ratio; Wherein, coupling agent is preferably at least a in 3-aminopropyltriethoxywerene werene, γ-glycidyl ether oxygen propyl trimethoxy silicane, the tetra-sodium type monoalkoxy class titanic acid ester; Thinner is preferably at least a in anhydrous dimethyl benzene, toluene, the acetone.The wollastonite surface active liquid of this preferred proportion and kind and wollastonite effect, the wollastonite after feasible processing the and the consistency of resin further increase, further improved the comprehensive mechanical property of wollastonite enhanced polycarbonate material, concrete referring to correlated performance parameter in 1.
Further preferably, the auxiliary agent that also comprises 1.5～2.0% weight percentages in the above-mentioned wollastonite enhanced polycarbonate material.Therefore, in a preferred embodiment, above-mentioned wollastonite enhanced polycarbonate material comprises the recipe ingredient of following weight percent:
Particularly, above-mentioned auxiliary agent is preferably at least a in oxidation inhibitor, the lubricant.Wherein, oxidation inhibitor is preferably at least a in antioxidant 1076, oxidation inhibitor 168, the antioxidant 1010; Lubricant is preferably at least a in PE wax and the PA wax.The adding of this oxidation inhibitor is given above-mentioned wollastonite enhanced polycarbonate material and is had antioxidant property, thereby has delayed the aging of this wollastonite enhanced polycarbonate material.The adding of lubricant makes above-mentioned wollastonite enhanced polycarbonate material in the extrusion moulding process, improve the dispersing property of wollastonite, further improve the dimensional stability and the intensity of this wollastonite enhanced polycarbonate material, made this wollastonite enhanced polycarbonate material microtexture balanced more and stable.
The embodiment of the invention also provides the preparation method of above-mentioned wollastonite enhanced polycarbonate material, and its technical process as shown in Figure 1.This method comprises the steps:
S1: the prescription according to above-mentioned wollastonite enhanced polycarbonate material takes by weighing polycarbonate resin, wollastonite, toughner and wollastonite surface active liquid respectively;
S2: wollastonite and described wollastonite surface active liquid are mixed, obtain being activated the wollastonite mixture of processing;
S3: in the wollastonite mixture, add described polycarbonate resin, toughner, stir and form mixture;
S4: mixture is extruded, and granulation obtains this wollastonite enhanced polycarbonate material.
Particularly, among the above-mentioned wollastonite enhanced polycarbonate material preparation method step S1, ratio and kind between each component of this polycarbonate resin, wollastonite, toughner and wollastonite surface active liquid all elaborate above-mentioned, in order to save length, repeat no more.Wherein, before taking by weighing polycarbonate resin, preferably this polycarbonate resin is carried out drying, the exsiccant temperature should guarantee that chemical transformation does not take place polycarbonate resin, as dry down at 120 ℃.The exsiccant mode can adopt conventional drying mode.
Further, in a preferred embodiment, also taken by weighing adjuvant component among this step S1, in this wollastonite enhanced polycarbonate material prescription gross weight 100%, the amount of taking by weighing of this adjuvant component is 1.5%～2%.Wherein, the kind that auxiliary agent comprised does not repeat them here in above-mentioned elaboration yet.Therefore, in the preferred embodiment, wollastonite enhanced polycarbonate material comprises the recipe ingredient of following weight percent:
Particularly, among the above-mentioned wollastonite enhanced polycarbonate material preparation method step S2, the mixing of wollastonite and wollastonite surface active liquid can adopt this area constant temperature high-speed mixer commonly used to mix, and this constant temperature is preferably 80～110 ℃, more preferably 100 ℃.Certainly be not limited to the constant temperature high-speed mixer and mix, also can adopt other agitation mixers, as long as can realize mixing of wollastonite and wollastonite surface active liquid, as the blended time can but be not limited only to 3min.
Above-mentioned wollastonite and wollastonite surface active liquid are mixed, make the immersion of the original inorganic surface of wollastonite by activation solution make the processing that organises of wollastonite surface, wollastonite can combine preferably with resin when being beneficial to wollastonite with the polycarbonate resin blend, makes wollastonite enhanced polycarbonate material that better shock resistance and dimensional stability can be arranged.
Among the above-mentioned wollastonite enhanced polycarbonate material preparation method step S3, stirring the mode that forms mixture can be with reference to the mode that mixes among the above-mentioned steps S2.
Further, when wollastonite enhanced polycarbonate material also contains adjuvant component, in this step S3, adjuvant component adds in the wollastonite mixture that obtains among the above-mentioned steps S2 with polycarbonate resin, toughner and mixes, and even until each mixing of materials.
Among the above-mentioned wollastonite enhanced polycarbonate material preparation method step S4, extruding preferred employing twin screw extruder by the mixture for preparing among the step S3 and extrude, is CTE-35 (L-D=48) twin screw extruder etc. as the model of producing by Nanjing Ke Ya company.In expressing technique, the temperature of mixture each section in this twin screw extruder is respectively: one section 210～230 ℃, two sections 235～245 ℃, three sections 240～250 ℃, four sections 240～260 ℃, five sections 240～260 ℃, six sections 230～250 ℃, seven sections 240～245 ℃, 250～260 ℃ of heads, the rotating speed of this twin screw extruder screw rod are preferably 400～450 rev/mins.
In above-mentioned S1～S4 step, in view of the self attributes of various components and synergistic effect each other, the embodiment of the invention has adopted the mode mixture of substep.Make that each material is intermolecular and have an effect between mutually when material is heating up rapidly under the high speed shear effect, thereby form embodiment of the invention wollastonite enhanced polycarbonate material, and give this wollastonite enhanced polycarbonate material good anti-breach performance, antifatigue, dimensional stability height, and good antioxidant property.This wollastonite enhanced polycarbonate material preparation method only needs by prescription each component to be carried out substep and mixes and extrude and can obtain product, and its preparation method technology is simple, and cost is low, is suitable for suitability for industrialized production.
Now prescription and the preparation method with concrete wollastonite enhanced polycarbonate material is example, and the present invention is further elaborated.
Embodiment 1
The recipe ingredient of wollastonite enhanced polycarbonate material weight percent is as follows:
Molecular weight is preferably the bisphenol A polycarbonate resin 85% of 20,000 molecular weight, wollastonite 8%, wollastonite surface active liquid 1%, the toughner 6% of the multipolymer of methacrylic ester and acrylate.Wherein, wollastonite is an average aspect ratio 10, and particle diameter is 15 μ m, and the pH value is 7, and wollastonite surface active liquid is that volume ratio is the mixture that 1: 1 3-aminopropyltriethoxywerene werene and anhydrous dimethyl benzene are formed.
The preparation method is as follows for this wollastonite enhanced polycarbonate material:
S11: earlier polycarbonate resin is put into loft drier, polycarbonate resin carried out drying treatment 3 hours under 120 ℃ of temperature, and the prescription according to above-mentioned wollastonite enhanced polycarbonate material takes by weighing each component then;
S12: earlier with wollastonite and wollastonite surface active fluid component, under 100 ℃ of conditions of constant temperature, mix and stirring 10min, slowly reduce to room temperature after mixing, obtain being activated the wollastonite mixture of processing;
S13: other component that will take by weighing and the above-mentioned wollastonite mixture that is activated processing are put into high-speed mixer mixing 3min, form mixture;
S14: mixture is joined in the hopper of twin screw extruder, and extrude, granulation obtains wollastonite enhanced polycarbonate material; This mixture temperature of each section in twin screw extruder is respectively: one section 220 ℃, and two sections 235 ℃, three sections 240 ℃, four sections 245 ℃, five sections 260 ℃, six sections 250 ℃, seven sections 240 ℃, 250 ℃ of heads; Screw speed: 430r/min.
Embodiment 2
The recipe ingredient of wollastonite enhanced polycarbonate material weight percent is as follows:
Molecular weight is preferably the bisphenol A polycarbonate resin 85% of 30,000 molecular weight, wollastonite 11%, wollastonite surface active liquid 1%, the toughner 3% of the multipolymer of methyl methacrylate, divinyl and styrene copolymer.Wherein, wollastonite is an average aspect ratio 8, and particle diameter is 20 μ m, and the pH value is 7, and wollastonite surface active liquid is that volume ratio is the mixture that 1: 1.5 γ-glycidyl ether oxygen propyl trimethoxy silicane and toluene are formed.
The preparation method is as follows for this wollastonite enhanced polycarbonate material:
S21: earlier polycarbonate resin is put into loft drier, polycarbonate resin carried out drying treatment 3 hours under 120 ℃ of temperature, and the prescription according to above-mentioned wollastonite enhanced polycarbonate material takes by weighing each component then;
S22: earlier with wollastonite and wollastonite surface active fluid component, under 100 ℃ of conditions of constant temperature, mix and stirring 10min, slowly reduce to room temperature after mixing, obtain being activated the wollastonite mixture of processing;
S23: other component that will take by weighing and the above-mentioned wollastonite mixture that is activated processing mix puts into high-speed mixer mixing 3min, forms mixture;
S24: mixture is joined in the hopper of twin screw extruder, and extrude, granulation obtains wollastonite enhanced polycarbonate material; This mixture temperature of each section in twin screw extruder is respectively: one section 210 ℃, and two sections 235 ℃, three sections 240 ℃, four sections 245 ℃, five sections 240 ℃, six sections 230 ℃, seven sections 240 ℃, 250 ℃ of heads; Screw speed: 370r/min.
Embodiment 3
The recipe ingredient of wollastonite enhanced polycarbonate material weight percent is as follows:
Molecular weight is preferably the bisphenol A polycarbonate resin 70% of 40,000 molecular weight, wollastonite 20%, wollastonite surface active liquid 6%, the toughner 3% of Polyurethane Thermoplastic Elastomer.Wherein, wollastonite is an average aspect ratio 12, and particle diameter is 18 μ m, and the pH value is 7.5, and wollastonite surface active liquid is that volume ratio is the mixture that 1: 2 tetra-sodium type monoalkoxy class titanic acid ester and acetone are formed.
The preparation method is as follows for this wollastonite enhanced polycarbonate material:
S31: earlier polycarbonate resin is put into loft drier, polycarbonate resin carried out drying treatment 3 hours under 120 ℃ of temperature, and the prescription according to above-mentioned wollastonite enhanced polycarbonate material takes by weighing each component then;
S32: earlier with wollastonite and wollastonite surface active fluid component, under 100 ℃ of conditions of constant temperature, mix and stirring 10min, slowly reduce to room temperature after mixing, obtain being activated the wollastonite mixture of processing;
S33: other component that will take by weighing is put into high-speed mixer mixing 3min with the wollastonite mixture mixing that is activated processing, forms mixture;
S34: mixture is joined in the hopper of twin screw extruder, and extrude, granulation obtains wollastonite enhanced polycarbonate material; This mixture temperature of each section in twin screw extruder is respectively: one section 210 ℃, and two sections 235 ℃, three sections 240 ℃, four sections 250 ℃, five sections 250 ℃, six sections 240 ℃, seven sections 240 ℃, 260 ℃ of heads; Screw speed: 450r/min.
Embodiment 4
The recipe ingredient of wollastonite enhanced polycarbonate material weight percent is as follows:
Molecular weight is preferably the bisphenol A polycarbonate resin 90% of 30,000 molecular weight, wollastonite 5%, wollastonite surface active liquid 1%, the multipolymer 4% of methacrylic ester and acrylate.Wherein, wollastonite is an average aspect ratio 8, and particle diameter is 5 μ m, and the pH value is 7, and wollastonite surface active liquid is that volume ratio is the mixture that 1: 1 tetra-sodium type monoalkoxy class titanic acid ester and toluene are formed.
The preparation method is as follows for this wollastonite enhanced polycarbonate material:
S41: earlier polycarbonate resin is put into loft drier, polycarbonate resin carried out drying treatment 3 hours under 120 ℃ of temperature, and the prescription according to above-mentioned wollastonite enhanced polycarbonate material takes by weighing each component then;
S42: earlier with wollastonite and wollastonite surface active fluid component, under 100 ℃ of conditions of constant temperature, mix and stirring 10min, slowly reduce to room temperature after mixing, obtain being activated the wollastonite mixture of processing.
S43: other component that will take by weighing is put into high-speed mixer mixing 3min with the wollastonite mixture mixing that is activated processing, forms mixture;
S54: mixture is joined in the hopper of twin screw extruder, and extrude, granulation obtains wollastonite enhanced polycarbonate material; This mixture temperature of each section in twin screw extruder is respectively: one section 210 ℃, and two sections 240 ℃, three sections 250 ℃, four sections 260 ℃, five sections 255 ℃, six sections 240 ℃, seven sections 250 ℃, 260 ℃ of heads; Screw speed: 350r/min.
Embodiment 5
The recipe ingredient of wollastonite enhanced polycarbonate material weight percent is as follows:
Molecular weight is preferably the bisphenol A polycarbonate resin 85% of 20,000 molecular weight, wollastonite 8%, wollastonite surface active liquid 1%, the toughner 6% of the multipolymer of methacrylic ester and acrylate, the oxidation inhibitor 0.5% of antioxidant 1076, lubricant PE wax 1%.Wherein, wollastonite is an average aspect ratio 15, and particle diameter is 8 μ m, and the pH value is 7.5, and wollastonite surface active liquid is that volume ratio is the mixture that 1: 1 tetra-sodium type monoalkoxy class titanic acid ester and anhydrous dimethyl benzene are formed.
This wollastonite enhanced polycarbonate material preparation method sees also the method for preparing wollastonite enhanced polycarbonate material among the embodiment 1.
Embodiment 6
The recipe ingredient of wollastonite enhanced polycarbonate material weight percent is as follows:
Molecular weight is preferably the bisphenol A polycarbonate resin 85% of 20,000 molecular weight, wollastonite 8%, wollastonite surface active liquid 1%, the toughner 6% of the multipolymer of methacrylic ester and acrylate, the oxidation inhibitor 0.2% of antioxidant 1010, the oxidation inhibitor 0.3% of oxidation inhibitor 168, lubricant PA wax 1.5%.Wherein, wollastonite is an average aspect ratio 10, and particle diameter is 20 μ m, and the pH value is 7, and wollastonite surface active liquid is that volume ratio is the mixture that 1: 1 tetra-sodium type monoalkoxy class titanic acid ester and anhydrous dimethyl benzene are formed.
This wollastonite enhanced polycarbonate material preparation method sees also the method for preparing wollastonite enhanced polycarbonate material among the embodiment 1.
The performance test experiment:
The wollastonite enhanced polycarbonate material that makes in the foregoing description 1 to embodiment 6 is carried out performance test:
Tensile strength, elongation at break, notched Izod impact strength etc. are tested by existing relevant criterion.Wherein, the every index performance test of wollastonite enhanced polycarbonate material that makes among the embodiment 1 to embodiment 6 the results are shown in following table 1.
Table 1
As can be seen from Table 1, the content of wollastonite has influence significantly to the modulus in flexure of wollastonite enhanced polycarbonate material, increase along with the increase of wollastonite content, but the resistance to impact shock of wollastonite enhanced polycarbonate material and elongation at break have corresponding reduction.The content of wollastonite also has certain influence to the shrinking percentage of plastics, along with the increase plastic shrink rate reduction of wollastonite content.The adding of lubricant helps the dispersion of wollastonite, and the plastic shrink rate of material is reduced, In Apparent Good Order and Condition, and shock resistance increases.Yet the existence of toughner has reduced the deficiency that causes the mechanical property reduction of wollastonite enhanced polycarbonate material along with the increase of wollastonite content effectively.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. wollastonite enhanced polycarbonate material comprises the recipe ingredient of following weight percent:
2. wollastonite enhanced polycarbonate material according to claim 1 is characterized in that: described wollastonite is an acicular wollastonite, and described acicular wollastonite average aspect ratio 8～15, particle diameter are 5～20 μ m, and the pH value is 7～7.5.
3. wollastonite enhanced polycarbonate material according to claim 1 is characterized in that: described polycarbonate resin is that molecular weight is 2～40,000 bisphenol A polycarbonate resin.
4. wollastonite enhanced polycarbonate material according to claim 1 is characterized in that: described toughner is at least a in multipolymer, Polyurethane Thermoplastic Elastomer, methyl methacrylate and the divinyl of methacrylic ester and acrylate and the styrene copolymer.
5. wollastonite enhanced polycarbonate material according to claim 1 is characterized in that: described wollastonite surface active liquid is that volume ratio is 1: 1～2 the coupling agent and the mixed solution of thinner; Described coupling agent is at least a in 3-aminopropyltriethoxywerene werene, γ-glycidyl ether oxygen propyl trimethoxy silicane, the tetra-sodium type monoalkoxy class titanic acid ester; Described thinner is at least a in anhydrous dimethyl benzene, toluene, the acetone.
6. wollastonite enhanced polycarbonate material according to claim 1 is characterized in that: the auxiliary agent that also comprises 1.5%～2% weight percentage.
7. wollastonite enhanced polycarbonate material according to claim 6 is characterized in that: described auxiliary agent is one or both in oxidation inhibitor, the lubricant;
Described oxidation inhibitor is at least a in antioxidant 1076, oxidation inhibitor 168, the antioxidant 1010;
Described lubricant is at least a in PE wax and the PA wax.
8. wollastonite enhanced polycarbonate material preparation method may further comprise the steps:
Prescription according to the arbitrary described wollastonite enhanced polycarbonate material of claim 1～7 takes by weighing polycarbonate resin, wollastonite, toughner and wollastonite surface active liquid respectively;
Described wollastonite and described wollastonite surface active liquid are mixed, obtain being activated the wollastonite mixture of processing;
In described wollastonite mixture, add described polycarbonate resin, toughner, stir and form mixture;
Described mixture is extruded, and granulation obtains described wollastonite enhanced polycarbonate material.
9. wollastonite enhanced polycarbonate material preparation method according to claim 8, it is characterized in that: when the prescription of described wollastonite enhanced polycarbonate material contained antioxidant, described antioxidant and described polycarbonate resin, toughner were mixed together the formation mixture.
10. wollastonite enhanced polycarbonate material preparation method according to claim 8, it is characterized in that: described extruding is to adopt twin screw extruder to extrude, the temperature of described mixture each section in described twin screw extruder is respectively: one section 210～230 ℃, two sections 235～245 ℃, three sections 240～250 ℃, four sections 240～260 ℃, five sections 240～260 ℃, six sections 230～250 ℃, seven sections 240～245 ℃, 250～260 ℃ of heads; The screw speed of described twin screw extruder is 350～450r/min.
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| CN114790326B (en) * | 2022-03-24 | 2023-11-03 | 金发科技股份有限公司 | Reinforced polycarbonate material and preparation method and application thereof |
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Application publication date: 20110824 |