CN109553948B - High-toughness high-hardness composite material and preparation method thereof - Google Patents
High-toughness high-hardness composite material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of materials, and particularly relates to a high-toughness high-hardness composite material and a preparation method thereof, wherein the high-toughness high-hardness composite material comprises the following raw materials in parts by weight: 80-90 parts of polycarbonate, 20-35 parts of polymethyl methacrylate, 15-20 parts of reinforcing filler, 15-30 parts of toughening modifier, 5-8 parts of lubricant, 5-10 parts of compatilizer and 3-7 parts of coupling agent; the reinforcing filler is a mixture consisting of hollow glass microspheres and nano boron fibers; the toughening modifier is a mixture of styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride, can improve the toughness and hardness of the PC-PMMA composite material, improves the impact resistance and tensile strength of the PC-PMMA composite material, has good wear resistance, is not easy to scratch on the surface of a product, has high fluidity, and is easy to machine and form.
Description
Technical Field
The invention relates to the technical field of materials, in particular to a high-toughness high-hardness composite material and a preparation method thereof.
Background
Polycarbonate (PC) is a non-crystalline thermoplastic engineering plastic with excellent performance, has the characteristics of heat resistance, impact resistance, good dimensional stability and the like, and has good mechanical properties at common use temperature. However, unmodified polycarbonate has the disadvantages of insufficient processing flowability, poor stress cracking resistance, poor chemical resistance, poor abrasion resistance, and poor compatibility between surface hardness and toughness. Polymethyl methacrylate (PMMA) is relatively low in price compared with polycarbonate, the PC/PMMA alloy has special pearlescent colors, but the PC/PMMA alloy material developed in the current market is low in hardness and toughness and poor in flowability, the thickness of the material is generally required to be increased in order to enable the prepared product to achieve the required hardness and toughness, and the product reject ratio is high because the flowability is poor and the processing forming is difficult. In the prior art, the polymethyl methacrylate plate is directly compounded on the surface of the polycarbonate plate, so that the impact resistance of the material is improved, but the composite plate compounded by two plates has larger thickness and higher reject ratio.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides a high-toughness high-hardness composite material, which can simultaneously improve the toughness and hardness of a PC-PMMA composite material and improve the impact resistance and tensile strength of the PC-PMMA composite material, has good wear resistance, high fluidity and easy processing and forming, is not easy to scratch on the surface of a product, is suitable for preparing ultrathin products, and the surface of the prepared product is smooth.
The second purpose of the invention is to provide a preparation method of the high-toughness high-hardness composite material, which has simple operation and high efficiency, the prepared composite material has the tensile strength of 25.12-35.12MPa, the elongation at break of 57-73 percent, the bending strength of 54-70MPa and the impact strength of 29.18-50.26KJ/m when the wall thickness is 2mm2Good balance between rigidity and toughness is realized, and the surface pencil hardness can reach 6H.
The first purpose of the invention is realized by the following technical scheme: a high-toughness high-hardness composite material comprises the following raw materials in parts by weight:
the reinforcing filler is a mixture consisting of hollow glass microspheres and nano boron fibers; the toughening modifier is a mixture of styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride.
According to the invention, the PC-PMMA composite material is prepared by adopting the raw materials and strictly controlling the weight ratio of the raw materials, so that the toughness and hardness of the PC-PMMA composite material can be simultaneously improved, the impact resistance and tensile strength of the PC-PMMA composite material are improved, the wear resistance is good, the surface of the product is not easy to scratch, the fluidity is high, the product is easy to machine and form, the PC-PMMA composite material is suitable for preparing ultrathin products, and the surface of the prepared product is smooth. According to the invention, the hollow glass microspheres with light weight, high strength, good hardness, good corrosion resistance and good flow property and the nano boron fibers with high strength, high elasticity and high temperature resistance are mixed to be used as the reinforcing filler to be compounded with the PC and the PMMA, so that the wear resistance, the elastic modulus and the hardness of the PC-PMMA composite material can be improved, and the surface gloss of the material can be maintained. The invention compounds the styrene-butadiene thermoplastic elastomer with excellent tensile strength, elasticity, large surface friction coefficient, good low-temperature performance and good fluidity with the high-density polyethylene grafted maleic anhydride as a toughening modifier to be mixed with a PC-PMMA matrix, and synergistically toughens and modifies the PC-PMMA composite material, wherein the high-density polyethylene grafted maleic anhydride can react with a polycarbonate chain in the PC-PMMA matrix, so that the high-density polyethylene can form a cross-linked elastic 'sea-island' structure in the PC-PMMA matrix, and absorbs the impact energy of the composite material together with the styrene-butadiene thermoplastic elastomer, thereby improving the impact resistance of the PC-PMMA composite material. The lubricant is adopted to interact with other reagents, so that the fluidity of the PC-PMMA composite material is improved, and the processing and forming performance and the surface gloss of the material are improved. The adopted compatilizer can effectively promote PC, PMMA, styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride to be combined into a whole, thereby obtaining a stable blend system. The coupling agent can be matched with other raw materials for action and synergistic reaction, so that the close combination of the raw materials is effectively improved, the interface properties of PC and PMMA, a toughening modifier, a reinforcing filler and a lubricant are improved, the dispersibility, viscosity, compatibility and processing flow property of the raw materials are improved, and the prepared composite material has excellent mechanical property and good surface gloss.
Further, the weight ratio of the hollow glass microspheres to the nano boron fibers is 5-8: 1-3.
According to the invention, by strictly controlling the weight ratio of the hollow glass microspheres to the nano boron fibers, the strength of the PC-PMMA composite material is improved, the toughness of the composite material is increased, the friction resistance is good, scratches are not easy to appear on the surface, and the surface glossiness of the composite material is maintained. When the weight ratio of the hollow glass microspheres to the nano boron fibers is more than 5-8:1-3, most of the nano boron fibers are wrapped by the hollow glass microspheres, so that the interface bonding force between the nano boron fibers and the PC-PMMA composite matrix is reduced, the nano boron fibers are easily pulled out of the PC-PMMA material when the composite material is stressed, the tensile strength of the material is reduced, and the reinforcing filler cannot be uniformly dispersed in the composite system, so that the strength and the toughness of the composite system are influenced. When the weight ratio of the hollow glass microspheres to the nano boron fibers is less than 5-8:1-3, the prepared PC-PMMA composite material has reduced surface glossiness and even has a rough surface.
Further, the weight ratio of the styrene-butadiene thermoplastic elastomer to the high-density polyethylene grafted maleic anhydride is 3-4: 1.
According to the invention, the weight ratio of the styrene-butadiene thermoplastic elastomer to the high-density polyethylene grafted maleic anhydride is strictly controlled, so that the prepared PC-PMMA composite material has excellent impact resistance and the flexibility and elasticity of the composite material are improved.
Further, the particle size of the hollow glass microsphere is 100-300 nm.
According to the invention, the particle size of the hollow glass microspheres is strictly controlled, so that the compatibility and the dispersibility of the hollow glass microspheres in a PC-PMMA composite system are improved, the toughness and the impact strength of the prepared PC-PMMA composite material are improved while the hardness and the strength of the prepared PC-PMMA composite material are improved, and the prepared composite material has the advantages of light weight, good flowing property, easiness in processing, good friction resistance and difficulty in scratching the surface. When the particle size of the hollow glass microspheres is larger than 300nm, the prepared material has uneven surface and low glossiness, and when the particle size is smaller than 100nm, the hollow glass microspheres are easy to polymerize and cannot be uniformly dispersed in a PC-PMMA composite matrix, so that the hardness, tensile strength, impact resistance and toughness of the material are influenced, and the comprehensive performance is poor.
Furthermore, the diameter of the nano boron fiber is 80-200nm, and the length of the nano boron fiber is 10-15 μm.
According to the invention, the diameter and the length of the nano boron fiber are strictly controlled, so that the compatibility of the nano boron fiber and a PC-PMMA composite system is better, and the prepared PC-PMMA composite material has the advantages of high hardness and tensile strength, good friction resistance, difficulty in scratching on the surface, good extrusion stability, smooth surface and high glossiness. When the diameter or the length of the nano boron fiber is too large, the glossiness of the surface of the composite material is influenced, the surface of the prepared material is rough, and when the diameter is too small, the nano boron fiber is easy to agglomerate in a PC-PMMA composite system, so that the hardness and the toughness of the composite material are influenced. When the length is too small, the crosslinking acting force in the nano boron fiber and PC-PMMA composite system is small, and when the composite material is stressed, the nano boron fiber is easily pulled out from the PC-PMMA composite system, so that the tensile strength and the impact resistance are small.
Preferably, the coupling agent is at least one of a 3-aminopropyltriethoxysilane coupling agent, an N- (2-aminoethyl) -3-aminopropyltrimethoxysilane coupling agent, diethylaminomethyl triethoxysilane, and phenylaminomethyl triethoxysilane coupling agent.
The coupling agent of the kind is adopted, and can be matched with other raw materials for action and synergistic reaction, so that the close combination among the raw materials is effectively improved, the interface performance among PC, PMMA, toughening modifier, lubricant and reinforcing filler can be improved, and the dispersibility, viscosity, compatibility and processing flow performance of the raw materials are improved, so that the prepared PC-PMMA composite material has better comprehensive performances such as hardness, toughness, friction resistance, impact resistance, dispersibility, cohesive force, weather resistance and the like.
Further, the lubricant is at least one of molybdenum disulfide and graphite.
The graphite and the molybdenum disulfide both have good lubricating property, and the friction coefficient of the composite material can be effectively reduced and the processing fluidity of the composite material can be improved by mixing the graphite and the molybdenum disulfide with the PC-PMMA composite material.
Preferably, the lubricant is a mixture of molybdenum disulfide and graphite in a weight ratio of 2-3: 1.
The compounding of graphite and molybdenum disulfide can slow down the frictional oxidation of a molybdenum disulfide lubricating film, prolong the service life of molybdenum dioxide, further improve the lubricating effect of the molybdenum dioxide on a composite material and improve the processing fluidity of the composite material.
Preferably, the compatilizer is at least one of styrene acrylonitrile random copolymer, methyl methacrylate-butadiene-styrene copolymer, maleic anhydride grafted acrylonitrile-butadiene-styrene terpolymer and maleic anhydride grafted polyethylene.
The compatilizer can be matched with other raw materials for reaction and synergistic reaction, so that the interfacial tension between molecules when the PC and the PMMA react with other raw materials is effectively reduced, the interfacial adhesion is further improved, the dispersed phase and the continuous phase are uniform, a stable structure is formed, the mutual matching reaction of the raw materials of the PC-PMMA composite material is promoted, the mechanical properties such as hardness, toughness, wear resistance, tensile strength, impact strength and the like of the PC-PMMA composite material are improved, the processing rheological property is improved, and the surface smoothness is improved.
The second purpose of the invention is realized by the following technical scheme: a preparation method of a high-toughness high-hardness composite material comprises the following steps:
(1) mixing and stirring the coupling agent, the lubricant and the reinforcing filler uniformly according to the weight ratio, then adding the polycarbonate and the toughening modifier for uniformly mixing, and then putting the mixture into extrusion equipment for mixing, extruding and granulating to prepare a master batch;
(2) uniformly mixing polymethyl methacrylate, a compatilizer and the master batch prepared in the step (1) according to the weight ratio, then putting the mixture into extrusion equipment for mixing, extruding and granulating, and finally performing injection molding to prepare the high-toughness high-hardness composite material.
The invention firstly mixes the coupling agent, the lubricant and the reinforcing filler, carries out surface modification on the lubricant and the reinforcing filler, improves the compatibility between the lubricant and the reinforcing filler and the PC-PMMA composite material, enables the lubricant and the reinforcing filler to be uniformly and stably dispersed in a PC-PMMA composite system, improves the hardness and the tensile strength of the composite material, and keeps the glossiness of the surface of the material.
The invention adopts a method of mixing, extruding and granulating for multiple times, strengthens the reinforcing modification and toughening modification of the PC-PMMA composite system by the reinforcing filler and the toughening modifier, ensures that the reinforcing filler and the toughening modifier can be more uniformly dispersed in the composite material, ensures that the prepared PC-PMMA composite material has high toughness and hardness, improves the shock resistance and tensile strength of the PC-PMMA composite material, has good wear resistance, is not easy to scratch on the surface of the product, has high fluidity, is easy to process and mold, is suitable for preparing ultrathin products, and ensures that the surface of the prepared product is smooth.
The barrel temperature of the extrusion equipment in the step (1) is 190-; the barrel temperature of the extrusion equipment in the step (2) is 250-300 ℃, and the screw rotating speed of the extrusion equipment in the step (2) is 400-600 r/min; the injection molding temperature in the step (2) is 250-300 ℃, and the film forming temperature of the material after injection molding is 20-60 ℃.
According to the invention, the two-time extrusion temperature and the screw rotating speed are strictly controlled, and the injection molding temperature and the film forming temperature of the material are simultaneously controlled, so that the prepared product has high toughness and hardness, excellent impact resistance and tensile strength, good wear resistance, difficulty in scratching on the surface of the product, high fluidity and easiness in processing and forming, and is suitable for preparing ultrathin products, and the surface of the prepared product is smooth. The combination property of the product can be influenced by over-high or under-low temperature.
The invention has the beneficial effects that: the high-toughness high-hardness composite material prepared by the invention has the advantages that the tensile strength is 25.12-35.12MPa, the elongation at break is 57-73%, the bending strength is 54-70MPa, the impact strength when the wall thickness is 2mm is 29.18-50.26KJ/m2, the good balance between rigidity and toughness is realized, the MFR is 15.69-30.12g/10min, the good flow property is realized, and the processing stability is good; the surface pencil hardness of the PC-PMMA composite material can reach 6H, while the surface pencil hardness of a layer of PMMA material directly compounded on the surface of a PC material plate in the prior art is only 1H, and compared with the PC-PMMA material in the prior art, the hardness of the PC-PMMA composite material is effectively improved.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
A high-toughness high-hardness composite material comprises the following raw materials in parts by weight:
the reinforcing filler is a mixture of hollow glass microspheres and nano boron fibers in a weight ratio of 5: 1; the toughening modifier is a mixture of styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride according to the weight ratio of 3: 1.
Wherein the hollow glass microspheres are silicon dioxide hollow glass microspheres, and the particle size of the hollow glass microspheres is 100 nm; the nano boron fiber has a diameter of 80nm and a length of 10 μm.
Wherein the coupling agent is 3-aminopropyl triethoxysilane coupling agent; the lubricant is molybdenum disulfide; the compatilizer is styrene acrylonitrile random copolymer.
The preparation method of the high-toughness high-hardness composite material comprises the following steps:
(1) mixing and stirring the coupling agent, the lubricant and the reinforcing filler uniformly according to the weight ratio, then adding the polycarbonate and the toughening modifier for uniformly mixing, and then putting the mixture into extrusion equipment for mixing, extruding and granulating to prepare a master batch;
(2) uniformly mixing polymethyl methacrylate, a compatilizer and the master batch prepared in the step (1) according to the weight ratio, then putting the mixture into extrusion equipment for mixing, extruding and granulating, and finally performing injection molding to prepare the high-toughness high-hardness composite material.
Wherein the temperature of a cylinder of the extrusion equipment in the step (1) is 190 ℃, and the screw rotating speed of the extrusion equipment in the step (1) is 300 r/min; the temperature of a machine barrel of the extrusion equipment in the step (2) is 250 ℃, and the rotating speed of a screw of the extrusion equipment in the step (2) is 400 r/min; the injection molding temperature in the step (2) is 250 ℃, and the film forming temperature of the injection molded material is 20 ℃.
Example 2
A high-toughness high-hardness composite material comprises the following raw materials in parts by weight:
wherein the reinforcing filler is a mixture of hollow glass microspheres and nano boron fibers in a weight ratio of 6.5: 2; the toughening modifier is a mixture of styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride according to the weight ratio of 3.5: 1.
Wherein the hollow glass microspheres are silicon dioxide hollow glass microspheres, and the particle size of the hollow glass microspheres is 200 nm; the nano boron fiber has a diameter of 140nm and a length of 12.5 μm.
Wherein the coupling agent is N- (2-aminoethyl) -3-aminopropyltrimethoxysilane coupling agent; the lubricant is graphite; the compatilizer is styrene acrylonitrile random copolymer.
The preparation method of the high-toughness high-hardness composite material comprises the following steps:
(1) mixing and stirring the coupling agent, the lubricant and the reinforcing filler uniformly according to the weight ratio, then adding the polycarbonate and the toughening modifier for uniformly mixing, and then putting the mixture into extrusion equipment for mixing, extruding and granulating to prepare a master batch;
(2) uniformly mixing the polymethyl methacrylate, the compatilizer and the master batch prepared in the step (1) according to the weight ratio, then putting the mixture into extrusion equipment for mixing, extruding and granulating, and finally performing injection molding to prepare the high-toughness high-hardness composite material.
Wherein the temperature of a machine barrel of the extrusion equipment in the step (1) is 225 ℃, and the screw rotating speed of the extrusion equipment in the step (1) is 350 r/min; the temperature of a machine barrel of the extrusion equipment in the step (2) is 275 ℃, and the screw rotating speed of the extrusion equipment in the step (2) is 500 r/min; the injection molding temperature in the step (2) is 275 ℃, and the film forming temperature of the injection molded material is 40 ℃.
Example 3
A high-toughness high-hardness composite material comprises the following raw materials in parts by weight:
the reinforcing filler is a mixture of hollow glass microspheres and nano boron fibers in a weight ratio of 8: 3; the toughening modifier is a mixture of styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride according to a weight ratio of 4: 1.
Wherein the hollow glass microspheres are silicon dioxide hollow glass microspheres, and the particle size of the hollow glass microspheres is 300 nm; the nano boron fiber has a diameter of 200nm and a length of 15 μm.
The coupling agent is diethylaminomethyl triethoxysilane; the lubricant is a mixture of molybdenum disulfide and graphite in a weight ratio of 2.5: 1; the compatilizer is maleic anhydride grafted acrylonitrile-butadiene-styrene terpolymer.
The preparation method of the high-toughness high-hardness composite material comprises the following steps:
(1) mixing and stirring the coupling agent, the lubricant and the reinforcing filler uniformly according to the weight ratio, then adding the polycarbonate and the toughening modifier for uniformly mixing, and then putting the mixture into extrusion equipment for mixing, extruding and granulating to prepare a master batch;
(2) uniformly mixing polymethyl methacrylate, a compatilizer and the master batch prepared in the step (1) according to the weight ratio, then putting the mixture into extrusion equipment for mixing, extruding and granulating, and finally performing injection molding to prepare the high-toughness high-hardness composite material.
Wherein the temperature of a machine barrel of the extrusion equipment in the step (1) is 260 ℃, and the screw rotating speed of the extrusion equipment in the step (1) is 400 r/min; the temperature of a machine barrel of the extrusion equipment in the step (2) is 300 ℃, and the rotating speed of a screw of the extrusion equipment in the step (2) is 600 r/min; the injection molding temperature in the step (2) is 300 ℃, and the film forming temperature of the injection molded material is 60 ℃.
Example 4
Example 4 differs from example 3 in that the hollow glass microspheres in example 4 have a particle size of 1000 nm.
Example 5
Example 5 is different from example 3 in that the nano boron fiber in example 5 has a diameter of 300nm and a length of 50 μm.
Example 6
Example 6 differs from example 3 in the production method, the barrel temperature of the extrusion apparatus in step (1) of the production method in example 6 is 300 ℃, and the screw rotation speed of the extrusion apparatus in step (1) is 350 r/min; the temperature of a machine barrel of the extrusion equipment in the step (2) is 400 ℃, and the screw rotating speed of the extrusion equipment in the step (2) is 500 r/min; the injection molding temperature in the step (2) is 400 ℃, and the film forming temperature of the injection molded material is 80 ℃.
Comparative example 1
Comparative example 1 differs from example 3 in that the reinforcing filler in comparative example 1 does not contain hollow glass microspheres.
Performance testing
The high toughness and high hardness composite materials prepared in the above examples 1 to 6 and comparative example 1 were prepared into samples having a size of 100mm × 100mm × 2mm, the appearance of each sample was observed, and the Melt Flow Rate (MFR), tensile properties, elongation at break, bending properties, impact properties and hardness thereof were measured according to the relevant test standards, and the test results were summarized in table 1.
Wherein the MFR test is carried out according to GB/T3682-83; the tensile property and the elongation at break are tested according to GB/T1040.2-92; the impact property test is carried out according to GB/T1843-96; the bending property test is carried out according to GB/T9341-2008; hardness test the pencil hardness of the surface was tested according to the GB/T6739-1996 pencil hardness test method for film hardness.
TABLE 1 summary of the performance test results for the high toughness, high hardness composites of examples 1-6 and comparative example 1
| Test items | MFR(g/10min) | Tensile strength MPa | Elongation at break% | Bending strength MPa | Impact strength KJ/m2 | Hardness of |
| Example 1 | 20.18 | 30.98 | 70 | 68 | 48.32 | 6H |
| Example 2 | 22.24 | 31.45 | 69 | 69 | 48.15 | 6H |
| Example 3 | 28.14 | 33.29 | 73 | 70 | 50.26 | 6H |
| Example 4 | 18.10 | 35.12 | 62 | 64 | 43.10 | 6H |
| Example 5 | 15.69 | 34.06 | 57 | 58 | 35.64 | 6H |
| Example 6 | 30.12 | 25.12 | 58 | 54 | 29.18 | 2H |
| Comparative example 1 | 15.40 | 23.42 | 54 | 55 | 31.65 | 2H |
As can be seen from the appearance of the samples of the high toughness and high hardness composite materials prepared in examples 1 to 6 and comparative example 1, the samples of examples 1 to 3 and 6 have smooth and flat surfaces, high gloss and good appearance, while the samples of examples 4 to 5 and comparative example 1 have rough and matte surfaces and low yield.
The high-toughness high-hardness composite material prepared by the invention has the tensile strength of 25.12-35.12MPa, the elongation at break of 57-73 percent and bendingThe bending strength is 54-70MPa, and the impact strength is 29.18-50.26KJ/m when the wall thickness is 2mm2The good balance between rigidity and toughness is realized, the MFR is between 15.69 and 30.12g/10min, particularly the MFR value of the embodiment 1 to 3 is between 20.18 and 28.14g/10min, the good flow property is realized, and the processing stability is good; the surface pencil hardness of the PC-PMMA composite material can reach 6H, while the surface pencil hardness of a layer of PMMA material directly compounded on the surface of a PC material plate in the prior art is only 1H, and compared with the PC-PMMA material in the prior art, the hardness of the PC-PMMA composite material is effectively improved.
As can be seen from comparison of comparative example 1 with example 3, the preparation temperature has a great influence on the properties of the high-toughness high-hardness composite material of the present invention, and when the preparation temperature of the present invention is used, the tensile strength, elongation at break, flexural strength, impact strength and hardness of the PC-PMMA composite material are superior to those of comparative example 1.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (6)
1. A high-toughness high-hardness composite material is characterized in that: the feed comprises the following raw materials in parts by weight:
the reinforcing filler is a mixture consisting of hollow glass microspheres with the particle size of 100-300nm and nano boron fibers with the diameter of 80-200nm and the length of 10-15 mu m according to the weight ratio of 5-8: 1-3;
the reinforcing filler is a mixture consisting of hollow glass microspheres and nano boron fibers; the toughening modifier is a mixture of a styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride, and the weight ratio of the styrene-butadiene thermoplastic elastomer to the high-density polyethylene grafted maleic anhydride is 3-4: 1.
2. A high toughness, high hardness composite according to claim 1 wherein: the coupling agent is at least one of 3-aminopropyltriethoxysilane coupling agent, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane coupling agent, diethylaminomethyl triethoxysilane, and phenylaminomethyl triethoxysilane coupling agent.
3. A high toughness, high hardness composite according to claim 1 wherein: the lubricant is at least one of molybdenum disulfide and graphite.
4. A high toughness, high hardness composite according to claim 1 wherein: the compatilizer is at least one of styrene acrylonitrile random copolymer, methyl methacrylate-butadiene-styrene copolymer, maleic anhydride grafted acrylonitrile-butadiene-styrene terpolymer and maleic anhydride grafted polyethylene.
5. A method for producing a high toughness high hardness composite material according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
(1) mixing and stirring the coupling agent, the lubricant and the reinforcing filler uniformly according to the weight ratio, then adding the polycarbonate and the toughening modifier for uniformly mixing, and then putting the mixture into extrusion equipment for mixing, extruding and granulating to prepare a master batch;
(2) uniformly mixing polymethyl methacrylate, a compatilizer and the master batch prepared in the step (1) according to the weight ratio, then putting the mixture into extrusion equipment for mixing, extruding and granulating, and finally performing injection molding to prepare the high-toughness high-hardness composite material.
6. The method for producing a high toughness, high hardness composite material according to claim 5, wherein: the barrel temperature of the extrusion equipment in the step (1) is 190-; the barrel temperature of the extrusion equipment in the step (2) is 250-300 ℃, and the screw rotating speed of the extrusion equipment in the step (2) is 400-600 r/min; the injection molding temperature in the step (2) is 250-300 ℃, and the film forming temperature of the material after injection molding is 20-60 ℃.
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| CN111004488A (en) * | 2019-12-18 | 2020-04-14 | 吴江朗恩电子科技有限公司 | Reinforced unsaturated resin insulating material and preparation and application thereof |
| CN114103340B (en) * | 2021-12-23 | 2022-11-04 | 浙江远景体育用品股份有限公司 | Continuous fiber reinforced thermoplastic helmet shell material and preparation method thereof |
| CN115044171A (en) * | 2022-06-30 | 2022-09-13 | 浙江华正新材料股份有限公司 | Resin composition, resin-based composite material and preparation method thereof |
| CN114957874B (en) * | 2022-07-07 | 2023-09-22 | 青岛海纳新材料有限公司 | High-hardness scratch-resistant polystyrene composite material and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06136214A (en) * | 1992-10-22 | 1994-05-17 | Nippon Steel Chem Co Ltd | Resin composition having pearly luster |
| CN101974218A (en) * | 2010-11-12 | 2011-02-16 | 大河宝利材料科技(苏州)有限公司 | Special plastic/acrylonitrile butadiene styrene (PC/ABS) alloy for notebook computer shell |
| CN102464876A (en) * | 2010-11-15 | 2012-05-23 | 苏州汉扬精密电子有限公司 | Polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) waste material modification and recovery formula |
-
2018
- 2018-11-16 CN CN201811364926.3A patent/CN109553948B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06136214A (en) * | 1992-10-22 | 1994-05-17 | Nippon Steel Chem Co Ltd | Resin composition having pearly luster |
| CN101974218A (en) * | 2010-11-12 | 2011-02-16 | 大河宝利材料科技(苏州)有限公司 | Special plastic/acrylonitrile butadiene styrene (PC/ABS) alloy for notebook computer shell |
| CN102464876A (en) * | 2010-11-15 | 2012-05-23 | 苏州汉扬精密电子有限公司 | Polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) waste material modification and recovery formula |
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