CN111978702A - Impact-resistant weather-resistant PC alloy material and preparation method thereof - Google Patents
Impact-resistant weather-resistant PC alloy material and preparation method thereof Download PDFInfo
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Abstract
The invention provides an impact-resistant weather-resistant PC alloy material and a preparation method thereof, wherein the impact-resistant weather-resistant PC alloy material comprises the following components in percentage by mass: 80-100 parts of polycarbonate, 40-70 parts of PBT resin, 30-60 parts of waste plastic film, 10-15 parts of glass fiber, 20-25 parts of gelatin, 4-6 parts of carboxymethyl cellulose, 10-12 parts of acrylic resin, 0.1-0.3 part of polyurethane, 1-2 parts of anion powder, 0.6-0.8 part of heat stabilizer, 0.4-0.7 part of silver-loaded zirconium phosphate nano antibacterial agent, 5-10 parts of nano master batch, 5-10 parts of styrene monomer, 2-4 parts of antioxidant and 5-9 parts of toughening agent; according to the invention, polycarbonate, PBT resin and nano master batch are used as base materials, and the softening of gelatin and the adsorbability of carboxymethyl cellulose and acrylic resin are matched, so that the hardness of the material is ensured, the internal adsorbability is improved, the material is tighter, and the resetting performance is better.
Description
Technical Field
The invention relates to the technical field of PC materials, in particular to an impact-resistant weather-resistant PC alloy material and a preparation method thereof.
Background
Polycarbonate, abbreviated as PC, is an engineering plastic with excellent comprehensive performance, has excellent mechanical strength, dimensional stability, electrical insulation, creep resistance and transparency, is widely applied to the fields of automobiles, electronics and electrics, buildings, office equipment, sports equipment and the like at present, but has the defects of poor processing fluidity, easy stress cracking, sensitivity to gaps, insufficient weather resistance, poor fatigue resistance and the like;
in the prior art, polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol is generally adopted to modify PC, and the PC is widely applied to manufacturing electronic product shells and automobile parts, but the material still has insufficient toughness, low impact resistance, especially extremely low weather resistance, is influenced by natural conditions, is easy to stress crack, has low impact force on gaps, poor wear resistance, poor fluidity and the like, and cannot be popularized and used outdoors, so the invention provides an impact-resistant weather-resistant PC alloy material and a preparation method thereof to solve the problems in the prior art.
Disclosure of Invention
Aiming at the problems, the invention provides an impact-resistant weather-resistant PC alloy material and a preparation method thereof.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme: an impact-resistant weather-resistant PC alloy material comprises the following components in percentage by mass: 80-100 parts of polycarbonate, 40-70 parts of PBT resin, 30-60 parts of waste plastic film, 10-15 parts of glass fiber, 20-25 parts of gelatin, 4-6 parts of carboxymethyl cellulose, 10-12 parts of acrylic resin, 0.1-0.3 part of polyurethane, 1-2 parts of anion powder, 0.6-0.8 part of heat stabilizer, 0.4-0.7 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 5-10 parts of nano master batch, 5-10 parts of styrene monomer, 2-4 parts of antioxidant, 5-9 parts of flexibilizer, 5-8 parts of flame retardant, 10-15 parts of nucleating agent and 3-10 parts of calcium stearate.
The further improvement lies in that: comprises the following components in percentage by mass: 90 parts of polycarbonate, 50 parts of PBT resin, 40 parts of waste plastic bags, 12 parts of glass fiber, 22 parts of gelatin, 5 parts of carboxymethyl cellulose, 11 parts of acrylic resin, 0.2 part of polyurethane, 1 part of anion powder, 0.7 part of heat stabilizer, 0.5 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 7 parts of nano master batch, 7 parts of styrene monomer, 3 parts of antioxidant, 6 parts of toughening agent, 6 parts of flame retardant, 12 parts of nucleating agent and 5 parts of calcium stearate.
The further improvement lies in that: the nano master batch is a compound of nano silicon dioxide and nano montmorillonite, the nucleating agent is a mixture of hydrotalcite powder and kaolin, and the waste plastic film is a waste plastic bag and an agricultural mulching film.
A preparation method of an impact-resistant weather-resistant PC alloy material comprises the following steps:
the method comprises the following steps: drying the PBT resin, the flame retardant and the nano master batch at the temperature of 120-130 ℃ for 3-5h, then putting the dried PBT resin, the nano master batch and the flame retardant into a high-speed stirrer for dry mixing for 5-10min, then adding calcium stearate, and performing dry mixing for 3-6min to obtain blended powder;
step two: respectively weighing polycarbonate with the formula amount by using a stainless steel barrel into a reaction kettle, opening a steam valve of the reaction kettle to heat, heating to 240 ℃ to melt the polycarbonate, pouring the blended powder obtained in the step one into the polycarbonate, starting a stirrer to stir, keeping the temperature, and fusing the blended powder and the polycarbonate to obtain a mixed melt;
step three: respectively weighing gelatin, carboxymethyl cellulose and acrylic resin according to the formula amount by using a stainless steel barrel, starting a stirrer, regulating the rotating speed to 50-65r/min, simultaneously heating to 90 ℃, mixing and stirring for 30-40min, then preserving heat for 20-30min, cooling to 80 ℃ after raw materials in a kettle are completely dissolved to obtain an adsorbate, then adding polyurethane and anion powder into the adsorbate, stirring for reaction, then regulating the temperature to 80 ℃, adding a heat stabilizer and a silver-loaded hydroxyl zirconium phosphate nano antibacterial agent, stirring, preserving heat and standing to obtain a colloidal adsorbate;
step four: adding a styrene monomer and glass fiber in a formula ratio into a stirrer, heating to 50-80 ℃, stirring for 0.5-0.8h, then keeping the temperature at 75 +/-5 ℃, reacting for 5.5-6.5h, then putting an antioxidant into the stirrer for mixing for 5-10min, controlling the temperature at 70 ℃ to obtain a modified material, and reserving for later use;
step five: cleaning a waste plastic film, removing impurities on the surface of the waste plastic film, airing and air-drying the waste plastic film, feeding the waste plastic film into a cutting machine, cutting the waste plastic film into film fragments, putting the film fragments into a centrifugal machine to separate water, drying the film fragments by hot air to reduce the water content to below 1%, feeding the film fragments into an extruder, pre-compressing the mixture by a feeding screw, compacting the mixture, rapidly extruding and shaping the mixture into strips by adopting a low-temperature and high-speed extrusion process and matching with a vibration cooling bed to control the temperature to be below 0 ℃, and finally cutting the strips into particles by a granulator to prepare PVC particles;
step six: pouring the modified material prepared in the fourth step into the mixed melt prepared in the second step, stirring for 10-15min at the temperature of 220-;
step seven: and C, feeding the finished product material obtained in the step six into an extruder, pre-compressing the material by a feeding screw, compacting the finished product material, and then adopting a low-temperature and high-speed extrusion process, controlling the temperature below 0 ℃ by matching with a vibration cooling bed, quickly extruding the finished product material and shaping into strips.
The further improvement lies in that: in the second step, the blended powder is poured into polycarbonate, a stirrer is started, the rotating speed is adjusted to 50-65r/min, and the pressure in the reaction kettle is controlled to be 1-1.05 MPa.
The further improvement lies in that: and in the third step, adding polyurethane and anion powder into the adsorbate, stirring and reacting for 3-5h at the temperature of 90-100 ℃, then adjusting the temperature to 80 ℃, adding a heat stabilizer and a silver-loaded zirconium hydroxyphosphate nano antibacterial agent, stirring for 40-90min, and then keeping the temperature and standing for 30min to obtain the colloidal adsorbate.
The further improvement lies in that: and in the fifth step, the caliber of the particle generated by cutting the strip-shaped object by the granulator is controlled to be 2-3 mm.
The invention has the beneficial effects that: the invention utilizes polycarbonate, PBT resin and nano master batch as base materials, the PBT resin is not easy to form crystallization and warp, the prepared base materials have excellent shock resistance by matching with the nano master batch and calcium stearate, and the prepared base materials have better shock resistance by matching with the softening of gelatin and the adsorbability of carboxymethyl cellulose and acrylic resin, improve the internal adsorption force while ensuring the hardness of the materials, so that the materials are tighter, the resetting performance is better, the materials are not easy to deform and more stable, and the functions of polyurethane and a heat stabilizer are added, so that the heat resistance and the flame retardant performance of the materials are effectively improved, the materials are not easy to soften, the weather resistance is ensured, meanwhile, the PVC particles prepared by waste plastic films are added, and the PVC particles exist in the materials in a single individual manner, so that the materials have the PVC performance, the material is lighter, waterproof and moistureproof, have the characteristics of flame retardance and heat insulation, and can recycle white pollution, the environment-friendly air purifier is green and sustainable, and in addition, negative ion powder is added into the material, so that the negative ions can be released, and the air purifier has the performance of killing germs and purifying air.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
According to the illustration in fig. 1, the embodiment provides an impact-resistant weather-resistant PC alloy material, which comprises the following components in percentage by mass: 80 parts of polycarbonate, 40 parts of PBT resin, 30 parts of waste plastic film, 10 parts of glass fiber, 20 parts of gelatin, 4 parts of carboxymethyl cellulose, 10 parts of acrylic resin, 0.1 part of polyurethane, 1 part of anion powder, 0.6 part of heat stabilizer, 0.4 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 5 parts of nano master batch, 5 parts of styrene monomer, 2 parts of antioxidant, 5 parts of toughening agent, 5 parts of flame retardant, 10 parts of nucleating agent and 3 parts of calcium stearate.
The nano master batch is a compound of nano silicon dioxide and nano montmorillonite, the nucleating agent is a mixture of hydrotalcite powder and kaolin, and the waste plastic film is a waste plastic bag and an agricultural mulching film.
A preparation method of an impact-resistant weather-resistant PC alloy material comprises the following steps:
the method comprises the following steps: drying the PBT resin, the flame retardant and the nano master batch at 125 ℃ for 4h, then putting the dried PBT resin, the nano master batch and the flame retardant into a high-speed stirrer for dry mixing for 6min, then adding calcium stearate, and performing dry mixing for 5min to obtain blended powder;
step two: respectively weighing polycarbonate with the formula amount by using a stainless steel barrel into a reaction kettle, opening a steam valve of the reaction kettle to heat, heating to 240 ℃ to melt the polycarbonate, then pouring the blended powder obtained in the step one into the polycarbonate, starting a stirrer, regulating the rotation speed to 60r/min, controlling the pressure in the reaction kettle to be 1MPa, keeping the temperature, and fusing the blended powder and the polycarbonate to obtain a mixed melt;
step three: respectively weighing gelatin, carboxymethyl cellulose and acrylic resin according to the formula amount by using a stainless steel barrel, starting a stirrer, regulating the rotation speed to 60r/min, simultaneously heating to 90 ℃, mixing and stirring for 35min, then preserving heat for 25min, cooling to 80 ℃ after raw materials in a kettle are completely dissolved to obtain an adsorbate, then adding polyurethane and anion powder into the adsorbate, stirring and reacting for 4h at the temperature of 95 ℃, then regulating the temperature to 80 ℃, adding a heat stabilizer and a silver-loaded zirconium phosphate hydroxide nano antibacterial agent, stirring for 50min, and then preserving heat and standing for 30min to obtain a colloid adsorbate;
step four: adding a styrene monomer and glass fiber in a formula ratio into a stirrer, heating to 60 ℃, stirring for 0.6h, then keeping the temperature at 75 +/-5 ℃, reacting for 6h, then putting an antioxidant into the stirrer for mixing for 8min, controlling the temperature at 70 ℃ to obtain a modified material, and reserving the modified material for later use;
step five: cleaning a waste plastic film, removing impurities on the surface of the waste plastic film, airing and air-drying the waste plastic film, feeding the waste plastic film into a cutting machine, cutting the waste plastic film into film fragments, putting the film fragments into a centrifugal machine to separate water, drying the film fragments by hot air to reduce the water content to below 1%, feeding the film fragments into an extruder, pre-compressing the mixture by a feeding screw, compacting the mixture, rapidly extruding and shaping the mixture into strips by adopting a low-temperature and high-speed extrusion process and matching with a vibration cooling bed to control the temperature to be below 0 ℃, and cutting the strips into particles with the diameter of 3mm by a granulator to prepare PVC particles;
step six: pouring the modified material prepared in the fourth step into the mixed melt prepared in the second step, stirring for 12min at 230 ℃, controlling the mixing speed to be 550r/min, adding the colloid adsorbate obtained in the third step, stirring for 22min at 230 ℃, cooling to 200 ℃, stirring for 5min, stopping heating, cooling to 100 ℃, adding the PVC particles obtained in the fifth step into the mixed material in the cooling process, and simultaneously adding the nucleating agent and the toughening agent to enable the PVC particles to exist in the mixed material in a single individual manner to obtain a finished product material;
step seven: and C, feeding the finished product material obtained in the step six into an extruder, pre-compressing the material by a feeding screw, compacting the finished product material, and then adopting a low-temperature and high-speed extrusion process, controlling the temperature below 0 ℃ by matching with a vibration cooling bed, quickly extruding the finished product material and shaping into strips.
Example two
According to the illustration in fig. 1, the embodiment provides an impact-resistant weather-resistant PC alloy material, which comprises the following components in percentage by mass: 90 parts of polycarbonate, 50 parts of PBT resin, 40 parts of waste plastic film, 12 parts of glass fiber, 22 parts of gelatin, 5 parts of carboxymethyl cellulose, 11 parts of acrylic resin, 0.2 part of polyurethane, 1 part of anion powder, 0.7 part of heat stabilizer, 0.5 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 7 parts of nano master batch, 6 parts of styrene monomer, 3 parts of antioxidant, 7 parts of toughening agent, 6 parts of flame retardant, 12 parts of nucleating agent and 7 parts of calcium stearate.
The nano master batch is a compound of nano silicon dioxide and nano montmorillonite, the nucleating agent is a mixture of hydrotalcite powder and kaolin, and the waste plastic film is a waste plastic bag and an agricultural mulching film.
A preparation method of an impact-resistant weather-resistant PC alloy material comprises the following steps:
the method comprises the following steps: drying the PBT resin, the flame retardant and the nano master batch at 125 ℃ for 4h, then putting the dried PBT resin, the nano master batch and the flame retardant into a high-speed stirrer for dry mixing for 6min, then adding calcium stearate, and performing dry mixing for 5min to obtain blended powder;
step two: respectively weighing polycarbonate with the formula amount by using a stainless steel barrel into a reaction kettle, opening a steam valve of the reaction kettle to heat, heating to 240 ℃ to melt the polycarbonate, then pouring the blended powder obtained in the step one into the polycarbonate, starting a stirrer, regulating the rotation speed to 60r/min, controlling the pressure in the reaction kettle to be 1MPa, keeping the temperature, and fusing the blended powder and the polycarbonate to obtain a mixed melt;
step three: respectively weighing gelatin, carboxymethyl cellulose and acrylic resin according to the formula amount by using a stainless steel barrel, starting a stirrer, regulating the rotation speed to 60r/min, simultaneously heating to 90 ℃, mixing and stirring for 35min, then preserving heat for 25min, cooling to 80 ℃ after raw materials in a kettle are completely dissolved to obtain an adsorbate, then adding polyurethane and anion powder into the adsorbate, stirring and reacting for 4h at the temperature of 95 ℃, then regulating the temperature to 80 ℃, adding a heat stabilizer and a silver-loaded zirconium phosphate hydroxide nano antibacterial agent, stirring for 50min, and then preserving heat and standing for 30min to obtain a colloid adsorbate;
step four: adding a styrene monomer and glass fiber in a formula ratio into a stirrer, heating to 60 ℃, stirring for 0.6h, then keeping the temperature at 75 +/-5 ℃, reacting for 6h, then putting an antioxidant into the stirrer for mixing for 8min, controlling the temperature at 70 ℃ to obtain a modified material, and reserving the modified material for later use;
step five: cleaning a waste plastic film, removing impurities on the surface of the waste plastic film, airing and air-drying the waste plastic film, feeding the waste plastic film into a cutting machine, cutting the waste plastic film into film fragments, putting the film fragments into a centrifugal machine to separate water, drying the film fragments by hot air to reduce the water content to below 1%, feeding the film fragments into an extruder, pre-compressing the mixture by a feeding screw, compacting the mixture, rapidly extruding and shaping the mixture into strips by adopting a low-temperature and high-speed extrusion process and matching with a vibration cooling bed to control the temperature to be below 0 ℃, and cutting the strips into particles with the diameter of 3mm by a granulator to prepare PVC particles;
step six: pouring the modified material prepared in the fourth step into the mixed melt prepared in the second step, stirring for 12min at 230 ℃, controlling the mixing speed to be 550r/min, adding the colloid adsorbate obtained in the third step, stirring for 22min at 230 ℃, cooling to 200 ℃, stirring for 5min, stopping heating, cooling to 100 ℃, adding the PVC particles obtained in the fifth step into the mixed material in the cooling process, and simultaneously adding the nucleating agent and the toughening agent to enable the PVC particles to exist in the mixed material in a single individual manner to obtain a finished product material;
step seven: and C, feeding the finished product material obtained in the step six into an extruder, pre-compressing the material by a feeding screw, compacting the finished product material, and then adopting a low-temperature and high-speed extrusion process, controlling the temperature below 0 ℃ by matching with a vibration cooling bed, quickly extruding the finished product material and shaping into strips.
EXAMPLE III
According to the illustration in fig. 1, the embodiment provides an impact-resistant weather-resistant PC alloy material, which comprises the following components in percentage by mass: 100 parts of polycarbonate, 70 parts of PBT resin, 60 parts of waste plastic film, 15 parts of glass fiber, 25 parts of gelatin, 6 parts of carboxymethyl cellulose, 12 parts of acrylic resin, 0.3 part of polyurethane, 2 parts of anion powder, 0.8 part of heat stabilizer, 0.7 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 10 parts of nano master batch, 10 parts of styrene monomer, 4 parts of antioxidant, 9 parts of toughening agent, 8 parts of flame retardant, 15 parts of nucleating agent and 10 parts of calcium stearate.
The nano master batch is a compound of nano silicon dioxide and nano montmorillonite, the nucleating agent is a mixture of hydrotalcite powder and kaolin, and the waste plastic film is a waste plastic bag and an agricultural mulching film.
A preparation method of an impact-resistant weather-resistant PC alloy material comprises the following steps:
the method comprises the following steps: drying the PBT resin, the flame retardant and the nano master batch at 125 ℃ for 4h, then putting the dried PBT resin, the nano master batch and the flame retardant into a high-speed stirrer for dry mixing for 6min, then adding calcium stearate, and performing dry mixing for 5min to obtain blended powder;
step two: respectively weighing polycarbonate with the formula amount by using a stainless steel barrel into a reaction kettle, opening a steam valve of the reaction kettle to heat, heating to 240 ℃ to melt the polycarbonate, then pouring the blended powder obtained in the step one into the polycarbonate, starting a stirrer, regulating the rotation speed to 60r/min, controlling the pressure in the reaction kettle to be 1MPa, keeping the temperature, and fusing the blended powder and the polycarbonate to obtain a mixed melt;
step three: respectively weighing gelatin, carboxymethyl cellulose and acrylic resin according to the formula amount by using a stainless steel barrel, starting a stirrer, regulating the rotation speed to 60r/min, simultaneously heating to 90 ℃, mixing and stirring for 35min, then preserving heat for 25min, cooling to 80 ℃ after raw materials in a kettle are completely dissolved to obtain an adsorbate, then adding polyurethane and anion powder into the adsorbate, stirring and reacting for 4h at the temperature of 95 ℃, then regulating the temperature to 80 ℃, adding a heat stabilizer and a silver-loaded zirconium phosphate hydroxide nano antibacterial agent, stirring for 50min, and then preserving heat and standing for 30min to obtain a colloid adsorbate;
step four: adding a styrene monomer and glass fiber in a formula ratio into a stirrer, heating to 60 ℃, stirring for 0.6h, then keeping the temperature at 75 +/-5 ℃, reacting for 6h, then putting an antioxidant into the stirrer for mixing for 8min, controlling the temperature at 70 ℃ to obtain a modified material, and reserving the modified material for later use;
step five: cleaning a waste plastic film, removing impurities on the surface of the waste plastic film, airing and air-drying the waste plastic film, feeding the waste plastic film into a cutting machine, cutting the waste plastic film into film fragments, putting the film fragments into a centrifugal machine to separate water, drying the film fragments by hot air to reduce the water content to below 1%, feeding the film fragments into an extruder, pre-compressing the mixture by a feeding screw, compacting the mixture, rapidly extruding and shaping the mixture into strips by adopting a low-temperature and high-speed extrusion process and matching with a vibration cooling bed to control the temperature to be below 0 ℃, and cutting the strips into particles with the diameter of 3mm by a granulator to prepare PVC particles;
step six: pouring the modified material prepared in the fourth step into the mixed melt prepared in the second step, stirring for 12min at 230 ℃, controlling the mixing speed to be 550r/min, adding the colloid adsorbate obtained in the third step, stirring for 22min at 230 ℃, cooling to 200 ℃, stirring for 5min, stopping heating, cooling to 100 ℃, adding the PVC particles obtained in the fifth step into the mixed material in the cooling process, and simultaneously adding the nucleating agent and the toughening agent to enable the PVC particles to exist in the mixed material in a single individual manner to obtain a finished product material;
step seven: and C, feeding the finished product material obtained in the step six into an extruder, pre-compressing the material by a feeding screw, compacting the finished product material, and then adopting a low-temperature and high-speed extrusion process, controlling the temperature below 0 ℃ by matching with a vibration cooling bed, quickly extruding the finished product material and shaping into strips.
Verification example:
table 1: weather resistance contrast test
| Weather resistance test (% change in impact Property) | |
| Ordinary PC material | 45.3 |
| Polyethylene glycol terephthalate-1 modified PC material | 35.2 |
| 4-cyclohexanedimethanol ester modified PC material | 33.7 |
| Example one | 10.1 |
| Example two | 10.5 |
| EXAMPLE III | 9.7 |
According to the first embodiment, the second embodiment and the third embodiment, the invention comprises the following components in percentage by mass: the PC alloy material prepared from 80-100 parts of polycarbonate, 40-70 parts of PBT resin, 30-60 parts of waste plastic film, 10-15 parts of glass fiber, 20-25 parts of gelatin, 4-6 parts of carboxymethyl cellulose, 10-12 parts of acrylic resin, 0.1-0.3 part of polyurethane, 1-2 parts of anion powder, 0.6-0.8 part of heat stabilizer, 0.4-0.7 part of silver-loaded hydroxyl zirconium phosphate nano antibacterial agent, 5-10 parts of nano master batch, 5-10 parts of styrene monomer, 2-4 parts of antioxidant, 5-9 parts of flexibilizer, 5-8 parts of flame retardant, 10-15 parts of nucleating agent and 3-10 parts of calcium stearate has excellent impact resistance, better reset performance, difficult deformation and stability.
The invention utilizes polycarbonate, PBT resin and nano master batch as base materials, the PBT resin is not easy to form crystallization and warp, the prepared base materials have excellent shock resistance by matching with the nano master batch and calcium stearate, and the prepared base materials have better shock resistance by matching with the softening of gelatin and the adsorbability of carboxymethyl cellulose and acrylic resin, improve the internal adsorption force while ensuring the hardness of the materials, so that the materials are tighter, the resetting performance is better, the materials are not easy to deform and more stable, and the functions of polyurethane and a heat stabilizer are added, so that the heat resistance and the flame retardant performance of the materials are effectively improved, the materials are not easy to soften, the weather resistance is ensured, meanwhile, the PVC particles prepared by waste plastic films are added, and the PVC particles exist in the materials in a single individual manner, so that the materials have the PVC performance, the material is lighter, waterproof and moistureproof, have the characteristics of flame retardance and heat insulation, and can recycle white pollution, the environment-friendly air purifier is green and sustainable, and in addition, negative ion powder is added into the material, so that the negative ions can be released, and the air purifier has the performance of killing germs and purifying air.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The impact-resistant weather-resistant PC alloy material is characterized by comprising the following components in percentage by mass: 80-100 parts of polycarbonate, 40-70 parts of PBT resin, 30-60 parts of waste plastic film, 10-15 parts of glass fiber, 20-25 parts of gelatin, 4-6 parts of carboxymethyl cellulose, 10-12 parts of acrylic resin, 0.1-0.3 part of polyurethane, 1-2 parts of anion powder, 0.6-0.8 part of heat stabilizer, 0.4-0.7 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 5-10 parts of nano master batch, 5-10 parts of styrene monomer, 2-4 parts of antioxidant, 5-9 parts of flexibilizer, 5-8 parts of flame retardant, 10-15 parts of nucleating agent and 3-10 parts of calcium stearate.
2. The impact-resistant weather-resistant PC alloy material as claimed in claim 1, which comprises the following components in percentage by mass: 90 parts of polycarbonate, 50 parts of PBT resin, 40 parts of waste plastic bags, 12 parts of glass fiber, 22 parts of gelatin, 5 parts of carboxymethyl cellulose, 11 parts of acrylic resin, 0.2 part of polyurethane, 1 part of anion powder, 0.7 part of heat stabilizer, 0.5 part of silver-loaded zirconium hydroxy phosphate nano antibacterial agent, 7 parts of nano master batch, 7 parts of styrene monomer, 3 parts of antioxidant, 6 parts of toughening agent, 6 parts of flame retardant, 12 parts of nucleating agent and 5 parts of calcium stearate.
3. The impact-resistant weather-resistant PC alloy material as claimed in claim 1, wherein: the nano master batch is a compound of nano silicon dioxide and nano montmorillonite, the nucleating agent is a mixture of hydrotalcite powder and kaolin, and the waste plastic film is a waste plastic bag and an agricultural mulching film.
4. The preparation method of the impact-resistant weather-resistant PC alloy material is characterized by comprising the following steps of:
the method comprises the following steps: drying the PBT resin, the flame retardant and the nano master batch at the temperature of 120-130 ℃ for 3-5h, then putting the dried PBT resin, the nano master batch and the flame retardant into a high-speed stirrer for dry mixing for 5-10min, then adding calcium stearate, and performing dry mixing for 3-6min to obtain blended powder;
step two: respectively weighing polycarbonate with the formula amount by using a stainless steel barrel into a reaction kettle, opening a steam valve of the reaction kettle to heat, heating to 240 ℃ to melt the polycarbonate, pouring the blended powder obtained in the step one into the polycarbonate, starting a stirrer to stir, keeping the temperature, and fusing the blended powder and the polycarbonate to obtain a mixed melt;
step three: respectively weighing gelatin, carboxymethyl cellulose and acrylic resin according to the formula amount by using a stainless steel barrel, starting a stirrer, regulating the rotating speed to 50-65r/min, simultaneously heating to 90 ℃, mixing and stirring for 30-40min, then preserving heat for 20-30min, cooling to 80 ℃ after raw materials in a kettle are completely dissolved to obtain an adsorbate, then adding polyurethane and anion powder into the adsorbate, stirring for reaction, then regulating the temperature to 80 ℃, adding a heat stabilizer and a silver-loaded hydroxyl zirconium phosphate nano antibacterial agent, stirring, preserving heat and standing to obtain a colloidal adsorbate;
step four: adding a styrene monomer and glass fiber in a formula ratio into a stirrer, heating to 50-80 ℃, stirring for 0.5-0.8h, then keeping the temperature at 75 +/-5 ℃, reacting for 5.5-6.5h, then putting an antioxidant into the stirrer for mixing for 5-10min, controlling the temperature at 70 ℃ to obtain a modified material, and reserving for later use;
step five: cleaning a waste plastic film, removing impurities on the surface of the waste plastic film, airing and air-drying the waste plastic film, feeding the waste plastic film into a cutting machine, cutting the waste plastic film into film fragments, putting the film fragments into a centrifugal machine to separate water, drying the film fragments by hot air to reduce the water content to below 1%, feeding the film fragments into an extruder, pre-compressing the mixture by a feeding screw, compacting the mixture, rapidly extruding and shaping the mixture into strips by adopting a low-temperature and high-speed extrusion process and matching with a vibration cooling bed to control the temperature to be below 0 ℃, and finally cutting the strips into particles by a granulator to prepare PVC particles;
step six: pouring the modified material prepared in the fourth step into the mixed melt prepared in the second step, stirring for 10-15min at the temperature of 220-;
step seven: and C, feeding the finished product material obtained in the step six into an extruder, pre-compressing the material by a feeding screw, compacting the finished product material, and then adopting a low-temperature and high-speed extrusion process, controlling the temperature below 0 ℃ by matching with a vibration cooling bed, quickly extruding the finished product material and shaping into strips.
5. The method for preparing the impact-resistant weather-resistant PC alloy material according to claim 4, wherein the method comprises the following steps: in the second step, the blended powder is poured into polycarbonate, a stirrer is started, the rotating speed is adjusted to 50-65r/min, and the pressure in the reaction kettle is controlled to be 1-1.05 MPa.
6. The method for preparing the impact-resistant weather-resistant PC alloy material according to claim 4, wherein the method comprises the following steps: and in the third step, adding polyurethane and anion powder into the adsorbate, stirring and reacting for 3-5h at the temperature of 90-100 ℃, then adjusting the temperature to 80 ℃, adding a heat stabilizer and a silver-loaded zirconium hydroxyphosphate nano antibacterial agent, stirring for 40-90min, and then keeping the temperature and standing for 30min to obtain the colloidal adsorbate.
7. The method for preparing the impact-resistant weather-resistant PC alloy material according to claim 4, wherein the method comprises the following steps: and in the fifth step, the caliber of the particle generated by cutting the strip-shaped object by the granulator is controlled to be 2-3 mm.
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| CN112126870A (en) * | 2020-10-20 | 2020-12-25 | 芜湖禾田汽车工业有限公司 | Forming and preparing integrated technology of high-strength high-toughness cast aluminum alloy material |
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| CN112126870A (en) * | 2020-10-20 | 2020-12-25 | 芜湖禾田汽车工业有限公司 | Forming and preparing integrated technology of high-strength high-toughness cast aluminum alloy material |
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Application publication date: 20201124 |