CN111040407B - High-flow high-rigidity aging-resistant glass fiber reinforced PC material and preparation method thereof - Google Patents
High-flow high-rigidity aging-resistant glass fiber reinforced PC material and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
- B29B9/14—Making granules characterised by structure or composition fibre-reinforced
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2455/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2423/00 - C08J2453/00
- C08J2455/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
Abstract
The invention relates to a high-flow high-rigidity aging-resistant glass fiber reinforced PC material and a preparation method thereof, wherein the glass fiber reinforced PC material is prepared by adopting PC resin, glass fiber, a compatilizer, an antioxidant, a lubricant, a toughening agent, a degrading agent, a coupling agent and titanium dioxide as raw materials and carrying out proper proportioning, and the finally prepared glass fiber reinforced PC material has higher fluidity, excellent tensile strength, bending strength, dimensional stability and smooth surface and can be used for producing large-scale thin-wall products; the data show that the glass fiber reinforced PC material has the advantages of melting index of 33.5g/10min, good fluidity, less surface floating fiber and excellent comprehensive performance.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a high-flow high-rigidity aging-resistant glass fiber reinforced PC material and a preparation method thereof.
Background
Polycarbonate (PC) molecular chains have both rigid benzene rings and flexible carbonate groups, so that the polycarbonate has excellent comprehensive mechanical properties, such as excellent light transmittance, high impact strength, high glossiness, good dimensional stability and the like, shows rigid and tough characteristics, is widely applied to various fields, and is a material with large use amount in the world at present.
Although polycarbonate has many advantages, the flowability of the material is poor, the processability of the material is influenced, the production cost is increased, and the material cannot be applied to producing large thin-wall parts. The mainstream direction in the market at present is to improve the fluidity of the PC material and improve the processability by a way of producing PC/ABS alloy by compounding ABS and PC, but the way can reduce the material properties such as tensile strength, thermal deformation and the like, so that the material cannot meet the use requirements.
Because the PC material has high viscosity, large thin-wall parts are difficult to process and produce, particularly, the glass fiber reinforced PC material is added, and the flowability of the glass fiber reinforced PC material is rapidly reduced due to poor flowability of glass fibers, so that large or thin-wall parts cannot be produced, and the application range of the glass fiber reinforced PC is limited.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a high-flow high-rigidity anti-aging glass fiber reinforced PC material and a preparation method thereof.
The technical scheme adopted by the invention is as follows:
a high-flow high-rigidity aging-resistant glass fiber reinforced PC material comprises the following raw material components:
55-65 parts of PC resin;
20-30 parts of glass fiber;
3-5 parts of a compatilizer;
0.1-1 parts by weight of antioxidant;
0-1 part by weight of lubricant;
0-10 parts of toughening agent;
0-0.5 weight part of degradation agent;
0.1-1 weight parts of coupling agent;
2-8 parts of titanium dioxide.
The PC resin is a single PC resin or a mixture of a plurality of PC resins. Preferably, the PC resin is a high strength and high fluidity PC resin to ensure a balance of fluidity, strength, appearance. The performance and the fluidity of the PC resin base material influence the performance and the fluidity of the glass fiber reinforced PC material. The high-fluidity resin is obtained by testing the melt index of the resin at more than 40g/10min under the test condition of 300 ℃ and the weight of 1.2 KG; the melt index of the compounded high-strength PC resin is 10-25g/10min, the high-fluidity PC resin is purchased from Korea Letian PC1600, and the high-strength PC resin is purchased from Jiaxing emperor 1225Y.
The glass fiber is alkali-free untwisted glass fiber, the diameter of the glass fiber is 13-17 μm, the appearance of a workpiece is influenced by the content of the glass fiber, the higher the content of the glass fiber is, the rougher the surface of the workpiece is, preferably, the content of the glass fiber is 20 parts, the diameter of the glass fiber is 13 μm, and the glass fiber is purchased from boulder group 13-988A.
The compatilizer is maleic anhydride grafted ethylene-octene polymer or silicone master batch.
The antioxidant is one or a mixture of several of an antioxidant 1010, an antioxidant 168 and an antioxidant 1076, and is purchased from Pasteur Germany.
The lubricant is one or a mixture of more of hyperbranched low molecular weight polyester, olefin wax, stearate, amide wax or pentaerythritol stearate.
The toughening agent is one or a mixture of more of ethylene methyl acrylate copolymer (EMA), MBS, POE or high rubber powder.
The degradation agent is one or a mixture of more of water, fatty acid, sorbic acid, ethanol, stearic acid and metal oxide.
The coupling agent is one or a mixture of more of gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane and gamma-methacryloyloxytrimethoxysilane, and is purchased from the caruncle morning light chemical company.
The preparation method of the high-flow high-rigidity anti-aging glass fiber reinforced PC material comprises the following specific steps:
weighing the raw materials according to the weight, fully and uniformly mixing the raw materials at the temperature of between 40 and 70 ℃, and then extruding and granulating the mixture at the temperature of between 220 and 280 ℃ to obtain the high-flow high-rigidity aging-resistant glass fiber reinforced PC material.
The invention has the beneficial effects that:
(1) according to the high-flow high-rigidity aging-resistant glass fiber reinforced PC material, the PC resin, the glass fiber, the compatilizer, the antioxidant, the lubricant, the toughening agent, the degrading agent, the coupling agent and the titanium dioxide are adopted as raw materials and are properly proportioned, and the finally prepared glass fiber reinforced PC material has high fluidity, excellent tensile strength, bending strength, dimensional stability and smooth surface and can be used for producing large thin-wall products; the data show that the glass fiber reinforced PC material has the advantages of melting index of 33.5g/10min, good fluidity, less surface floating fiber and excellent comprehensive performance.
(2) Different from the traditional straight-line rising type processing temperature from low temperature to high temperature, the invention adopts the wave type processing temperature: firstly, the temperature is reduced from low temperature to high temperature, then the temperature of the neck ring mold is increased to match with the formula, and the distribution and the retention length of the glass fiber in the PC resin are adjusted, so that the glass fiber reinforced PC material keeps higher mechanical property. Through the combination of the formula and the process, the glass fiber reinforced PC material produced by the invention has higher fluidity and mechanical property, the melt index of the glass fiber reinforced PC material can reach more than 30g/10min, the melt index of the glass fiber reinforced PC material is higher than that of the glass fiber reinforced PC material produced by the traditional method, and the glass fiber reinforced PC material can be used for producing large-scale thin-wall parts.
(3) The invention uses optimized formula design, adds proper weight proportion of degradation agent, causes the PC to be partially degraded in the processing process, improves the fluidity of the glass fiber reinforced PC, causes the rigidity and the fluidity of the glass fiber reinforced PC to be higher than those of the conventional pure PC, can effectively reduce the dosage of expensive high-fluidity PC and the influence of the high-fluidity PC on the performance, and reduces the production cost.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a high-flow high-rigidity aging-resistant glass fiber reinforced PC material, which comprises the following raw material components:
PC1600 (purchased from Korea Letian, melt index ≧ 40g/10min), 55 parts by weight;
30 parts by weight of alkali-free untwisted glass fibers (from boulder group 13-988A) having a diameter of 13 μm;
the compatilizer is maleic anhydride grafted styrene-acrylonitrile-butadiene polymer, and 3 parts by weight of the compatilizer is maleic anhydride grafted styrene-acrylonitrile-butadiene polymer;
antioxidant 1010 (from basf, germany), 1 part by weight;
the toughening agent is EMA, 10 weight portions;
the coupling agent is gamma-aminopropyl triethoxysilane (purchased from caruncle morning chemical company), 1 weight part;
2 parts of titanium dioxide.
Mixing the raw materials in a high-speed mixer for 7min at the temperature of 40 ℃, then placing the raw materials in a feeding hopper of a double-screw extruder to be uniformly mixed again, adding the raw materials into a charging barrel to be extruded and granulated, and in order to ensure the length of the glass fiber, the glass fiber is added by being drawn by a second charging hole so as to reduce the shearing of the screw to the glass fiber, wherein the rotating speed of a main machine is 200 rpm;
the temperature of each area of the double-screw machine is respectively as follows: 220 ℃ in the first zone, 230 ℃ in the second zone, 240 ℃ in the third zone, 260 ℃ in the fourth zone, 270 ℃ in the fifth zone, 260 ℃ in the sixth zone, 270 ℃ in the seventh zone, 270 ℃ in the eighth zone, 270 ℃ in the ninth zone and 280 ℃ in the head.
Example 2
The embodiment provides a high-flow high-rigidity aging-resistant glass fiber reinforced PC material, which comprises the following raw material components:
PC1600 (purchased from Korea Letian, melt index ≧ 40g/10min), 65 parts by weight;
20 parts by weight of alkali-free untwisted glass fibers (from boulder group 13-988A) having a diameter of 17 μm;
the compatilizer is maleic anhydride grafted ethylene-octene polymer, 5 weight portions;
antioxidant 168 (from basf, germany), 0.1 parts by weight;
the lubricant is ethylene wax, 1 part by weight;
0.5 part by weight of a degradation agent is fatty acid SA 1801;
the coupling agent is gamma-glycidoxypropyltrimethoxysilane (purchased from caruncle morning light chemical company) 0.1 weight part;
titanium dioxide, 8 parts by weight.
Mixing the raw materials in a high-speed mixer for 3min at the temperature of 70 ℃, then placing the raw materials in a feeding hopper of a double-screw extruder to be uniformly mixed again, adding the raw materials into a charging barrel to be extruded and granulated, and in order to ensure the length of the glass fiber, the glass fiber is added by being drawn by a second charging hole so as to reduce the shearing of the screw to the glass fiber, wherein the rotating speed of a host is 350 rpm;
the temperature of each area of the double-screw machine is respectively as follows: 220 ℃ in the first zone, 230 ℃ in the second zone, 240 ℃ in the third zone, 260 ℃ in the fourth zone, 270 ℃ in the fifth zone, 260 ℃ in the sixth zone, 270 ℃ in the seventh zone, 270 ℃ in the eighth zone, 270 ℃ in the ninth zone and 280 ℃ in the head.
Example 3
The embodiment provides a high-flow high-rigidity aging-resistant glass fiber reinforced PC material, which comprises the following raw material components:
PC1600 (available from Letian, Korea PC1600 with melt index above 40g/10min), 20 parts by weight;
1225Y (from Jiaxing emperor, melt index of 10-25g/10min), 45.4 weight parts;
20 parts by weight of alkali-free untwisted glass fibers (purchased from boulder group 13-988A) having a diameter of 13 μm;
the compatilizer is maleic anhydride grafted ethylene-vinyl acetate polymer, 3 weight portions;
antioxidant 1010 (from basf, germany), 0.6 parts by weight;
0.5 part by weight of hyperbranched low molecular weight polyester CY101 as a lubricant;
5 parts of toughening agent EMA;
the coupling agent is gamma-aminopropyl triethoxysilane (purchased from caruncle morning chemical company), 0.5 weight part;
5 parts of titanium dioxide.
Mixing the raw materials in a high-speed mixer for 5min at the temperature of 60 ℃, then placing the raw materials in a feeding hopper of a double-screw extruder to be uniformly mixed again, adding the raw materials into a charging barrel to be extruded and granulated, and in order to ensure the length of the glass fiber, the glass fiber is added by being pulled by a second feeding port so as to reduce the shearing of the screw to the glass fiber, wherein the rotating speed of a host is 200-350 rpm;
the temperature of each area of the double-screw machine is respectively as follows: 220 ℃ in the first zone, 230 ℃ in the second zone, 240 ℃ in the third zone, 260 ℃ in the fourth zone, 270 ℃ in the fifth zone, 260 ℃ in the sixth zone, 270 ℃ in the seventh zone, 270 ℃ in the eighth zone, 270 ℃ in the ninth zone and 280 ℃ in the head.
Example 4
The embodiment provides a high-flow high-rigidity aging-resistant glass fiber reinforced PC material, which comprises the following raw material components:
1600 parts by weight of PC and 20 parts by weight of PC;
1225Y, 35.4 parts by weight;
30 parts by weight of alkali-free untwisted glass fiber with the diameter of 13 μm;
the compatilizer is maleic anhydride grafted ethylene-vinyl acetate polymer, 3 weight portions;
0.6 part of antioxidant 1010;
0.5 part by weight of hyperbranched low molecular weight polyester CY101 as a lubricant;
5 parts of toughening agent EMA;
the coupling agent is gamma-aminopropyl triethoxysilane, 0.5 weight portion;
5 parts of titanium dioxide.
Mixing the raw materials in a high-speed mixer for 6min at the temperature of 50 ℃, then placing the raw materials in a feeding hopper of a double-screw extruder for uniformly mixing again, adding the raw materials into a charging barrel for extrusion granulation, and in order to ensure the length of the glass fiber, drawing and adding the glass fiber from a second charging hole so as to reduce the shearing of the screw on the glass fiber, wherein the rotating speed of a main machine is 300 rpm;
the temperature of each area of the double-screw machine is respectively as follows: 220 ℃ in the first zone, 230 ℃ in the second zone, 240 ℃ in the third zone, 260 ℃ in the fourth zone, 270 ℃ in the fifth zone, 260 ℃ in the sixth zone, 270 ℃ in the seventh zone, 270 ℃ in the eighth zone, 270 ℃ in the ninth zone and 280 ℃ in the head.
Example 5
The embodiment provides a high-flow high-rigidity aging-resistant glass fiber reinforced PC material, which comprises the following raw material components:
PC1600, 5 weight portions;
1225Y, 60.4 parts by weight;
20 parts by weight of alkali-free untwisted glass fiber with the diameter of 17 μm;
the compatilizer is maleic anhydride grafted ethylene-vinyl acetate polymer, 3 weight portions;
0.6 part of antioxidant 1010;
0.5 part by weight of hyperbranched low molecular weight polyester CY101 as a lubricant;
5 parts of toughening agent EMA;
the coupling agent is gamma-aminopropyl triethoxysilane, 0.5 weight portion;
5 parts of titanium dioxide.
Mixing the raw materials in a high-speed mixer for 5min at the temperature of 50 ℃, then placing the raw materials in a feeding hopper of a double-screw extruder to be uniformly mixed again, adding the raw materials into a charging barrel to be extruded and granulated, and in order to ensure the length of the glass fiber, the glass fiber is added by being drawn by a second charging hole so as to reduce the shearing of the screw to the glass fiber, wherein the rotating speed of a host is 280 rpm;
the temperature of each area of the double-screw machine is respectively as follows: 220 ℃ in the first zone, 230 ℃ in the second zone, 240 ℃ in the third zone, 260 ℃ in the fourth zone, 270 ℃ in the fifth zone, 260 ℃ in the sixth zone, 270 ℃ in the seventh zone, 270 ℃ in the eighth zone, 270 ℃ in the ninth zone and 280 ℃ in the head.
Example 6
The embodiment provides a high-flow high-rigidity aging-resistant glass fiber reinforced PC material, which comprises the following raw material components:
PC1600, 5 weight portions;
1225Y, 60.4 parts by weight;
20 parts by weight of alkali-free untwisted glass fiber with the diameter of 14 μm;
the compatilizer is maleic anhydride grafted ethylene-vinyl acetate polymer, 5 parts by weight;
0.6 part of antioxidant 1010;
0.5 part by weight of hyperbranched low molecular weight polyester CY101 as a lubricant;
5 parts of toughening agent EMA;
the coupling agent is gamma-aminopropyl triethoxysilane, 0.5 weight portion;
5 parts of titanium dioxide.
Mixing the raw materials in a high-speed mixer for 6min at the temperature of 50 ℃, then placing the raw materials in a feeding hopper of a double-screw extruder to be uniformly mixed again, adding the raw materials into a charging barrel to be extruded and granulated, and in order to ensure the length of the glass fiber, the glass fiber is added by being drawn by a second charging hole so as to reduce the shearing of the screw to the glass fiber, wherein the rotating speed of a main machine is between 250 rpm;
the temperatures of all the zones of the double-screw machine are respectively as follows: 220 ℃ in the first zone, 230 ℃ in the second zone, 240 ℃ in the third zone, 260 ℃ in the fourth zone, 270 ℃ in the fifth zone, 260 ℃ in the sixth zone, 270 ℃ in the seventh zone, 270 ℃ in the eighth zone, 270 ℃ in the ninth zone and 280 ℃ in the head.
Example 7
The embodiment provides a high-flow high-rigidity aging-resistant glass fiber reinforced PC material, which comprises the following raw material components:
PC1600, 5 weight portions;
1225Y, 61.1 parts by weight;
20 parts by weight of alkali-free untwisted glass fiber with the diameter of 14 μm;
the compatilizer is maleic anhydride grafted ethylene-vinyl acetate polymer, 3 weight portions;
0.6 part of antioxidant 1010;
0.3 part by weight of stearic acid as a degradation agent;
5 parts of toughening agent EMA;
5 parts of titanium dioxide.
Mixing the raw materials in a high-speed mixer for 5min at the temperature of 60 ℃, then placing the raw materials in a feeding hopper of a double-screw extruder to be uniformly mixed again, adding the raw materials into a charging barrel to be extruded and granulated, and in order to ensure the length of the glass fiber, the glass fiber is added by being drawn by a second charging hole so as to reduce the shearing of the screw to the glass fiber, wherein the rotating speed of a main machine is between 250 rpm;
the temperature of each area of the double-screw machine is respectively as follows: 220 ℃ in the first zone, 230 ℃ in the second zone, 240 ℃ in the third zone, 260 ℃ in the fourth zone, 270 ℃ in the fifth zone, 260 ℃ in the sixth zone, 270 ℃ in the seventh zone, 270 ℃ in the eighth zone, 270 ℃ in the ninth zone and 280 ℃ in the head.
Example 8
The embodiment provides a high-flow high-rigidity aging-resistant glass fiber reinforced PC material, which comprises the following raw material components:
PC1600, 5 weight portions;
1225Y, 65.4 parts by weight;
20 parts by weight of alkali-free untwisted glass fiber with the diameter of 14 μm;
the compatilizer is maleic anhydride grafted ethylene-vinyl acetate polymer, 3 weight portions;
0.6 part of antioxidant 1010;
0.5 part by weight of hyperbranched low molecular weight polyester CY101 as a lubricant;
the coupling agent is gamma-aminopropyl triethoxysilane, 0.5 weight portion;
5 parts of titanium dioxide.
Mixing the raw materials in a high-speed mixer for 6min at the temperature of 55 ℃, then placing the raw materials in a feeding hopper of a double-screw extruder to be uniformly mixed again, adding the raw materials into a charging barrel to be extruded and granulated, and in order to ensure the length of the glass fiber, the glass fiber is added by being drawn by a second charging hole so as to reduce the shearing of the screw to the glass fiber, wherein the rotating speed of a main machine is 320 rpm;
the temperature of each area of the double-screw machine is respectively as follows: 220 ℃ in the first zone, 230 ℃ in the second zone, 240 ℃ in the third zone, 260 ℃ in the fourth zone, 270 ℃ in the fifth zone, 260 ℃ in the sixth zone, 270 ℃ in the seventh zone, 270 ℃ in the eighth zone, 270 ℃ in the ninth zone and 280 ℃ in the head.
Example 9
The embodiment provides a high-flow high-rigidity aging-resistant glass fiber reinforced PC material, which comprises the following raw material components:
PC1600, 65.4 weight portions;
20 parts by weight of alkali-free untwisted glass fiber with the diameter of 14 μm;
the compatilizer is maleic anhydride grafted ethylene-vinyl acetate polymer, 3 weight portions;
0.6 part of antioxidant 1010;
0.5 part by weight of hyperbranched low molecular weight polyester CY101 as a lubricant;
5 parts of toughening agent EMA;
the coupling agent is gamma-aminopropyl triethoxysilane, 0.5 weight portion;
5 parts of titanium dioxide.
Mixing the raw materials in a high-speed mixer for 4min at the temperature of 60 ℃, then placing the raw materials in a feeding hopper of a double-screw extruder to be uniformly mixed again, adding the raw materials into a charging barrel to be extruded and granulated, and in order to ensure the length of the glass fiber, the glass fiber is added by being drawn by a second charging hole so as to reduce the shearing of the screw to the glass fiber, wherein the rotating speed of a main machine is between 250 rpm;
the temperature of each area of the double-screw machine is respectively as follows: 220 ℃ in the first zone, 230 ℃ in the second zone, 240 ℃ in the third zone, 260 ℃ in the fourth zone, 270 ℃ in the fifth zone, 260 ℃ in the sixth zone, 270 ℃ in the seventh zone, 270 ℃ in the eighth zone, 270 ℃ in the ninth zone and 280 ℃ in the head.
Comparative example 1
The only difference from example 5 is that: the temperature of each area of the double-screw machine is in a straight-line rising type and is respectively as follows: 190 ℃ in the first zone, 210 ℃ in the second zone, 230 ℃ in the third zone, 240 ℃ in the fourth zone, 250 ℃ in the fifth zone, 250 ℃ in the sixth zone, 260 ℃ in the seventh zone, 270 ℃ in the eighth zone, 280 ℃ in the ninth zone and 280 ℃ in the head.
Examples of the experiments
The particles obtained by granulation in examples 1-9 and comparative example 1 of the invention were injection molded into tensile, bending and impact bars in an injection molding machine at 300 ℃ of 250-. The test specimens were placed in an environment of (23. + -. 2) ℃ and humidity (50. + -. 10%) for 88h before testing.
Tensile bar size: the length is 150 plus or minus 2mm, the width is 10 plus or minus 0.2mm, and the thickness is 4 plus or minus 0.2 mm.
Bending spline size: the length is 80 plus or minus 2mm, the width is 10 plus or minus 0.2mm, and the thickness is 4 plus or minus 0.2 mm.
Impact spline size: the length is 80 plus or minus 2mm, the width is 10 plus or minus 0.2mm, the thickness is 4 plus or minus 0.2mm, and the residual width of the gap is 8 plus or minus 0.2 mm.
TABLE 1 test results for different splines
From analysis of test results, it can be seen that various performance indexes and production cost are combined, and the sample G obtained by the method in the embodiment 7 is the optimal choice, which shows that the method of adding the degradation agent can greatly improve the fluidity of the glass fiber reinforced PC material, and the melt index can reach 27.6G/10 min.
The reinforced PC material produced by the invention has higher fluidity and rigidity, can be used for producing large-scale thin-wall products, and greatly expands the application range of the glass fiber reinforced PC material. Different from the low-to-high linear ascending processing temperature mode adopted in the comparative example 1, the invention adopts the wave-shaped processing temperature mode, reduces the shearing of resin to glass fiber, and better maintains the performance of the reinforced material.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A high-flow high-rigidity aging-resistant glass fiber reinforced PC material is characterized by comprising the following raw material components:
55-65 parts of PC resin;
20-30 parts of glass fiber;
3-5 parts of a compatilizer;
0.1-1 weight part of antioxidant;
0-1 part by weight of lubricant;
0-10 parts of toughening agent;
0-0.5 weight part of degradation agent;
0.1-1 weight part of coupling agent;
2-8 parts of titanium dioxide;
the PC resin is a mixture of high-fluidity PC resin with the melt index being not less than 40g/10min and high-strength PC resin with the melt index being 10-25g/10 min;
the glass fiber is alkali-free untwisted glass fiber, and the diameter of the glass fiber is 13-17 μm;
the degradation agent is stearic acid;
the content of the degradation agent is not 0;
the preparation method of the high-flow high-rigidity anti-aging glass fiber reinforced PC material comprises the following specific steps:
weighing the raw materials according to the weight, fully and uniformly mixing at 40-70 ℃, and then carrying out melt extrusion and granulation by adopting a double-screw extruder to obtain the high-flow high-rigidity aging-resistant glass fiber reinforced PC material;
the temperature of each area of the double-screw machine is respectively as follows: the first zone is 220 ℃, the second zone is 230 ℃, the third zone is 240 ℃, the fourth zone is 260 ℃, the fifth zone is 270 ℃, the sixth zone is 260 ℃, the seventh zone is 270 ℃, the eighth zone is 270 ℃, the ninth zone is 270 ℃, the head is 280 ℃, and the rotating speed of the main machine is 300-450 rpm.
2. The high flow high rigidity aging resistant glass fiber reinforced PC material of claim 1, wherein the compatibilizer is maleic anhydride grafted ethylene-octene polymer or silicone masterbatch.
3. The high flow and high rigidity aging resistant glass fiber reinforced PC material of claim 1, wherein the antioxidant is one or a mixture of several of antioxidant 1010, antioxidant 168 and antioxidant 1076.
4. The high flow, high rigidity, aging resistant fiberglass reinforced PC material of claim 1, wherein the lubricant is one or a mixture of hyperbranched low molecular weight polyester, olefin wax, stearate, amide wax, or pentaerythritol stearate based lubricant.
5. The high flow and high rigidity aging resistant glass fiber reinforced PC material of claim 1, wherein the toughening agent is one or a mixture of more of EMA, MBS, POE or high rubber powder.
6. The high flow and high rigidity aging-resistant glass fiber reinforced PC material of claim 1, wherein the coupling agent is one or a mixture of gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane and gamma-methacryloxytrimethoxysilane.
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| CN103160101A (en) * | 2011-12-13 | 2013-06-19 | 合肥杰事杰新材料股份有限公司 | Halogen-free flame retardant PC material with high fluidity, and preparation method thereof |
| CN108276569A (en) * | 2017-12-25 | 2018-07-13 | 上海德亿化工有限公司 | A kind of degradable aliphatic polycarbonate thin-film material and preparation method thereof |
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| CN103160101A (en) * | 2011-12-13 | 2013-06-19 | 合肥杰事杰新材料股份有限公司 | Halogen-free flame retardant PC material with high fluidity, and preparation method thereof |
| CN108276569A (en) * | 2017-12-25 | 2018-07-13 | 上海德亿化工有限公司 | A kind of degradable aliphatic polycarbonate thin-film material and preparation method thereof |
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