CN112457650A - Blended reclaimed material with ABS (acrylonitrile butadiene styrene) imitating performance - Google Patents
Blended reclaimed material with ABS (acrylonitrile butadiene styrene) imitating performance Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
Abstract
The invention discloses an ABS performance-imitated blending reclaimed material, which is prepared by the following steps: firstly, weighing the following raw materials in parts by weight: 50-75 parts of reclaimed materials, 8-10 parts of filling master batch, 10-20 parts of elastomer, 60-90 parts of polycarbonate, 1-3 parts of maleic anhydride and 5-10 parts of antioxidant; secondly, adding the reclaimed materials, the filling master batch, the elastomer, the polycarbonate and the maleic anhydride into a high-speed stirrer, mixing and stirring for 2-4min, then adding the antioxidant, and continuously stirring for 4-6min to obtain a mixture; thirdly, adding the obtained mixture into a double-screw extruder, and performing melt extrusion, bracing, cooling and granulation to obtain a blended reclaimed material with the ABS-like performance; the temperature of each zone of the double-screw extruder is controlled at 180 ℃ to 240 ℃.
Description
Technical Field
The invention belongs to the technical field of polymer modified materials, and particularly relates to an ABS (acrylonitrile butadiene styrene) performance-imitated blending reclaimed material.
Background
ABS plastics have the common properties of three components, A makes it resistant to chemical corrosion and heat and has a certain surface hardness, B makes it have high elasticity and toughness, and S makes it have the processing and forming characteristics of thermoplastic plastics and improves the electrical properties. Therefore, the ABS plastic is a tough, hard and rigid material which has easily obtained raw materials, good comprehensive performance, low price and wide application. ABS plastics are widely applied to the manufacturing industries of machinery, electricity, textile, automobiles, airplanes, ships and the like and the chemical industry; the polypropylene resin is a crystalline polymer with regular structure, is a light milky granule, tasteless, nontoxic and light thermoplastic resin, has a relative density of 0.90-0.91, is the lightest of general resins, but is easy to age.
Disclosure of Invention
The invention provides a blending reclaimed material with ABS (acrylonitrile butadiene styrene) imitating performance.
The technical problems to be solved by the invention are as follows:
the polypropylene resin is a crystalline polymer with a regular structure, is light milky granular material, tasteless, nontoxic and light thermoplastic resin; the ABS-imitated blended material is the lightest of general resins, but polypropylene is easy to age, and the preparation of the ABS-imitated blended material is realized by recycling and modifying the polypropylene resin.
The purpose of the invention can be realized by the following technical scheme:
an ABS performance-imitating blended reclaimed material is prepared by the following steps:
firstly, weighing the following raw materials in parts by weight: 50-75 parts of reclaimed materials, 8-10 parts of filling master batch, 10-20 parts of elastomer, 60-90 parts of polycarbonate, 1-3 parts of maleic anhydride and 5-10 parts of antioxidant;
secondly, adding the reclaimed materials, the filling master batch, the elastomer, the polycarbonate and the maleic anhydride into a high-speed stirrer, mixing and stirring for 2-4min, then adding the antioxidant, and continuously stirring for 4-6min to obtain a mixture;
thirdly, adding the obtained mixture into a double-screw extruder, and performing melt extrusion, bracing, cooling and granulation to obtain a blended reclaimed material with the ABS-like performance; the temperature of each zone of the double-screw extruder is controlled at 180 ℃ to 240 ℃.
Further, the preparation process of the reclaimed materials comprises the following steps:
washing the polypropylene reclaimed material with ethylene glycol at 35 ℃, drying at 120 ℃ for 2-4h after washing, and crushing into particles with the particle size of 2-4mm after drying, namely the reclaimed material.
Further, the process conditions of the twin-screw extruder are as follows: the temperature of the first zone is 180-fold, the temperature of the second zone is 195-fold, the temperature of the third zone is 205-fold, the temperature of the fourth zone is 205-fold, the temperature of the fifth zone is 210-fold, the temperature of the sixth zone is 215-fold, the temperature of the seventh zone is 220-fold, the rotation speed of the screw is 300-fold at 350r/min, and the pressure is 14-16 MPa.
Further, the filling master batch is prepared from styrene-butadiene-styrene block copolymer, calcium carbonate, chlorinated paraffin and dioctyl phthalate according to a mass ratio of 20: 40: 1: 0.1 mixing; the antioxidant is one of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester or 2, 6-di-tert-butyl-4-methylphenol.
Further, the elastomer is prepared by the following steps:
step S11, adding polyethylene glycol 2000 into a three-neck flask, setting the temperature to be 50 ℃ and the rotating speed to be 300r/min, sequentially adding boron trifluoride diethyl etherate and epichlorohydrin, stirring for reacting for 2 hours, then dropwise adding an alkali lignin solution, after dropwise adding the alkali lignin solution, raising the temperature to 80 ℃, keeping the rotating speed unchanged, continuing stirring for 3 hours, after stirring is finished, reducing the temperature to room temperature, adjusting the pH value to be 7 by using 1mol/L hydrochloric acid solution, centrifuging the reaction solution after pH adjustment for 10 minutes at the rotating speed of 10000r/min, mixing the obtained supernatant with absolute ethyl alcohol in an equal volume manner, centrifuging for 10 minutes at the rotating speed of 10000r/min after mixing, retaining the supernatant, and performing rotary evaporation and concentration on the obtained supernatant at 50 ℃ to obtain modified lignin;
step S12, mixing the modified lignin obtained in the step S11 with ethanol water solution with volume fraction of 70%, setting the temperature at 50 ℃ and the rotating speed at 300r/min, adding gamma-aminopropyltriethoxysilane, reacting for 30min, cooling to room temperature after the reaction is finished, mixing the obtained reaction solution with absolute ethanol in equal volume, then carrying out reduced pressure distillation, removing the solvent, and then drying in vacuum at 70 ℃ to constant weight to obtain the auxiliary agent;
and S13, adding polyethylene glycol 2000 and the modified lignin obtained in the step S11 into a reaction kettle, setting the temperature at 70 ℃ and the rotating speed at 600r/min, adding dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water in the stirring process, continuing stirring for 10min after the addition is finished, then adding hexamethylene diisocyanate and an auxiliary agent, increasing the rotating speed to 1000r/min, continuing stirring for 30S, and standing for 1-2h to obtain the elastomer.
Further, in the step S11, the alkali lignin solution is alkali lignin and 1mol/L sodium hydroxide solution according to a mass ratio of 1: 3, the mass ratio of polyethylene glycol 2000, boron trifluoride diethyl etherate complex, epichlorohydrin to alkali lignin solution is 120-: 1: 6.1: 400, respectively; in the step S12, the using amount ratio of the modified lignin, the ethanol water solution with the volume fraction of 70 percent and the gamma-aminopropyltriethoxysilane is 8 g: 10mL of: 40 mL; in the step S13, the mass ratio of polyethylene glycol 2000, modified lignin, dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water is 1: 1: 0.01-0.02: 0.02: 0.01: 0.01; the mass ratio of the modified lignin to the hexamethylene diisocyanate to the auxiliary agent is 1-3: 1: 1.
the invention has the beneficial effects that:
the filling master batch is added in the preparation process, the filling master batch contains calcium carbonate, styrene-butadiene-styrene segmented copolymer and a small amount of plasticizer, the elongation at break and the tensile strength of the blending reclaimed material can be improved, the molecular chain is easily unfolded and unsmooth to reduce the elongation at break when the addition amount of the calcium carbonate is too much, the elongation at break can be improved by adding the elastomer, and the mechanical property of the recovered blending material is improved by matching the filling master batch with the elastomer.
The lignin has a complex three-dimensional network structure, hydroxyl is usually hidden in molecules, phenolic hydroxyl in the lignin is converted into alcoholic hydroxyl by using polyethylene glycol grafted alkali lignin so as to improve the reaction activity, and gamma-aminopropyltriethoxysilane contains N, Si two flame retardant elements which are grafted with modified lignin so as to prepare an auxiliary agent with stability and char forming capability;
meanwhile, the reaction activity of the aliphatic hydroxyl and the isocyanate group is higher than that of the phenolic hydroxyl, the interaction force between the modified lignin and the hexamethylene diisocyanate is enhanced, the crosslinking density in the elastomer is improved, and more excellent elastic performance is shown; meanwhile, the structure of the auxiliary agent is similar to that of the modified lignin, the compatibility is good, and the dispersibility of the auxiliary agent in the elastomer is improved, so that the prepared blending reclaimed material has the stability of the auxiliary agent and the flame-retardant char-forming performance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An ABS performance-imitating blended reclaimed material is prepared by the following steps:
firstly, weighing the following raw materials in parts by weight: 50 parts of reclaimed materials, 8 parts of filling master batch, 10 parts of elastomer, 60 parts of polycarbonate, 1 part of maleic anhydride and 5 parts of antioxidant;
secondly, adding the reclaimed materials, the filling master batch, the elastomer, the polycarbonate and the maleic anhydride into a high-speed stirrer, mixing and stirring for 2min, then adding the antioxidant, and continuously stirring for 4min to obtain a mixture;
thirdly, adding the obtained mixture into a double-screw extruder, and performing melt extrusion, bracing, cooling and granulation to obtain a blended reclaimed material with the ABS-like performance; the temperature of each zone of the twin-screw extruder was controlled at 180 ℃.
Wherein, the preparation process of the reclaimed materials comprises the following steps:
washing the polypropylene reclaimed material with ethylene glycol at 35 ℃, drying at 100 ℃ for 2h after washing, and crushing into particles with the particle size of 2mm after drying, namely the reclaimed material.
Wherein, the process conditions of the double-screw extruder are as follows: the first zone temperature is 180 ℃, the second zone temperature is 195 ℃, the third zone temperature is 205 ℃, the fourth zone temperature is 205 ℃, the fifth zone temperature is 210 ℃, the sixth zone temperature is 215 ℃, the seventh zone temperature is 220 ℃, the screw rotation speed is 300r/min, and the pressure is 14 MPa.
Wherein the filling master batch is prepared from styrene-butadiene-styrene block copolymer, calcium carbonate, chlorinated paraffin and dioctyl phthalate according to a mass ratio of 20: 40: 1: 0.1 mixing; the antioxidant is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
Wherein the elastomer is prepared by the following steps:
step S11, adding polyethylene glycol 2000 into a three-neck flask, setting the temperature to be 50 ℃ and the rotating speed to be 300r/min, sequentially adding boron trifluoride diethyl etherate and epichlorohydrin, stirring for reacting for 2 hours, then dropwise adding an alkali lignin solution, after dropwise adding the alkali lignin solution, raising the temperature to 80 ℃, keeping the rotating speed unchanged, continuing stirring for 3 hours, after stirring is finished, reducing the temperature to room temperature, adjusting the pH value to be 7 by using 1mol/L hydrochloric acid solution, centrifuging the reaction solution after pH adjustment for 10 minutes at the rotating speed of 10000r/min, mixing the obtained supernatant with absolute ethyl alcohol in an equal volume manner, centrifuging for 10 minutes at the rotating speed of 10000r/min after mixing, retaining the supernatant, and performing rotary evaporation and concentration on the obtained supernatant at 50 ℃ to obtain modified lignin;
step S12, mixing the modified lignin obtained in the step S11 with ethanol water solution with volume fraction of 70%, setting the temperature at 50 ℃ and the rotating speed at 300r/min, adding gamma-aminopropyltriethoxysilane, reacting for 30min, cooling to room temperature after the reaction is finished, mixing the obtained reaction solution with absolute ethanol in equal volume, then carrying out reduced pressure distillation, removing the solvent, and then drying in vacuum at 70 ℃ to constant weight to obtain the auxiliary agent;
and S13, adding polyethylene glycol 2000 and the modified lignin obtained in the step S11 into a reaction kettle, setting the temperature at 70 ℃ and the rotating speed at 600r/min, adding dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water in the stirring process, continuing stirring for 10min after the addition is finished, then adding hexamethylene diisocyanate and an auxiliary agent, increasing the rotating speed to 1000r/min, continuing stirring for 30S, and standing for 1h to obtain the elastomer.
Wherein the alkali lignin solution in the step S11 is alkali lignin and 1mol/L sodium hydroxide solution according to the mass ratio of 1: 3, the mass ratio of the polyethylene glycol 2000 to the boron trifluoride diethyl etherate complex to the epichlorohydrin to the alkali lignin solution is 120: 1: 6.1: 400, respectively; in the step S12, the using amount ratio of the modified lignin, the ethanol water solution with the volume fraction of 70 percent and the gamma-aminopropyltriethoxysilane is 8 g: 10mL of: 40 mL; in the step S13, the mass ratio of polyethylene glycol 2000, modified lignin, dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water is 1: 1: 0.01: 0.02: 0.01: 0.01; the mass ratio of the modified lignin to the hexamethylene diisocyanate to the auxiliary agent is 1: 1: 1.
example 2
An ABS performance-imitating blended reclaimed material is prepared by the following steps:
firstly, weighing the following raw materials in parts by weight: 60 parts of reclaimed materials, 9 parts of filling master batch, 15 parts of elastomer, 75 parts of polycarbonate, 2 parts of maleic anhydride and 8 parts of antioxidant;
secondly, adding the reclaimed materials, the filling master batch, the elastomer, the polycarbonate and the maleic anhydride into a high-speed stirrer, mixing and stirring for 3min, then adding the antioxidant, and continuously stirring for 5min to obtain a mixture;
thirdly, adding the obtained mixture into a double-screw extruder, and performing melt extrusion, bracing, cooling and granulation to obtain a blended reclaimed material with the ABS-like performance; the temperature of each zone of the twin-screw extruder was controlled at 220 ℃.
Wherein, the preparation process of the reclaimed materials comprises the following steps:
washing the polypropylene reclaimed material with water, washing with ethylene glycol at 35 ℃, drying at 110 ℃ for 3h after washing, and crushing into particles with the particle size of 3mm after drying, namely the reclaimed material.
Wherein, the process conditions of the double-screw extruder are as follows: the first zone temperature is 185 ℃, the second zone temperature is 198 ℃, the third zone temperature is 210 ℃, the fourth zone temperature is 210 ℃, the fifth zone temperature is 215 ℃, the sixth zone temperature is 220 ℃, the seventh zone temperature is 230 ℃, the screw rotation speed is 325r/min, and the pressure is 15 MPa.
Wherein the filling master batch is prepared from styrene-butadiene-styrene block copolymer, calcium carbonate, chlorinated paraffin and dioctyl phthalate according to a mass ratio of 20: 40: 1: 0.1 mixing; the antioxidant is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
Wherein the elastomer is prepared by the following steps:
step S11, adding polyethylene glycol 2000 into a three-neck flask, setting the temperature to be 50 ℃ and the rotating speed to be 300r/min, sequentially adding boron trifluoride diethyl etherate and epichlorohydrin, stirring for reacting for 2 hours, then dropwise adding an alkali lignin solution, after dropwise adding the alkali lignin solution, raising the temperature to 80 ℃, keeping the rotating speed unchanged, continuing stirring for 3 hours, after stirring is finished, reducing the temperature to room temperature, adjusting the pH value to be 7 by using 1mol/L hydrochloric acid solution, centrifuging the reaction solution after pH adjustment for 10 minutes at the rotating speed of 10000r/min, mixing the obtained supernatant with absolute ethyl alcohol in an equal volume manner, centrifuging for 10 minutes at the rotating speed of 10000r/min after mixing, retaining the supernatant, and performing rotary evaporation and concentration on the obtained supernatant at 50 ℃ to obtain modified lignin;
step S12, mixing the modified lignin obtained in the step S11 with ethanol water solution with volume fraction of 70%, setting the temperature at 50 ℃ and the rotating speed at 300r/min, adding gamma-aminopropyltriethoxysilane, reacting for 30min, cooling to room temperature after the reaction is finished, mixing the obtained reaction solution with absolute ethanol in equal volume, then carrying out reduced pressure distillation, removing the solvent, and then drying in vacuum at 70 ℃ to constant weight to obtain the auxiliary agent;
and S13, adding polyethylene glycol 2000 and the modified lignin obtained in the step S11 into a reaction kettle, setting the temperature at 70 ℃ and the rotating speed at 600r/min, adding dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water in the stirring process, continuing to stir for 10min after the addition is finished, then adding hexamethylene diisocyanate and an auxiliary agent, increasing the rotating speed to 1000r/min, continuing to stir for 30S, and standing for 1.5h to obtain the elastomer.
Wherein the alkali lignin solution in the step S11 is alkali lignin and 1mol/L sodium hydroxide solution according to the mass ratio of 1: 3, wherein the mass ratio of the polyethylene glycol 2000 to the boron trifluoride diethyl etherate complex to the epichlorohydrin to the alkali lignin solution is 125: 1: 6.1: 400, respectively; in the step S12, the using amount ratio of the modified lignin, the ethanol water solution with the volume fraction of 70 percent and the gamma-aminopropyltriethoxysilane is 8 g: 10mL of: 40 mL; in the step S13, the mass ratio of polyethylene glycol 2000, modified lignin, dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water is 1: 1: 0.01: 0.02: 0.01: 0.01; the mass ratio of the modified lignin to the hexamethylene diisocyanate to the auxiliary agent is 2: 1: 1.
example 3
An ABS performance-imitating blended reclaimed material is prepared by the following steps:
firstly, weighing the following raw materials in parts by weight: 75 parts of reclaimed materials, 10 parts of filling master batch, 20 parts of elastomer, 90 parts of polycarbonate, 3 parts of maleic anhydride and 10 parts of antioxidant;
secondly, adding the reclaimed materials, the filling master batch, the elastomer, the polycarbonate and the maleic anhydride into a high-speed stirrer, mixing and stirring for 4min, then adding the antioxidant, and continuously stirring for 6min to obtain a mixture;
thirdly, adding the obtained mixture into a double-screw extruder, and performing melt extrusion, bracing, cooling and granulation to obtain a blended reclaimed material with the ABS-like performance; the temperature of each zone of the twin-screw extruder was controlled at 240 ℃.
Wherein, the preparation process of the reclaimed materials comprises the following steps:
washing the polypropylene reclaimed material with water, washing with ethylene glycol at 35 ℃, drying at 120 ℃ for 4h after washing, and crushing into particles with the particle size of 4mm after drying, namely the reclaimed material.
Wherein, the process conditions of the double-screw extruder are as follows: the temperature of the first zone is 190 ℃, the temperature of the second zone is 200 ℃, the temperature of the third zone is 215 ℃, the temperature of the fourth zone is 215 ℃, the temperature of the fifth zone is 220 ℃, the temperature of the sixth zone is 225 ℃, the temperature of the seventh zone is 240 ℃, the rotating speed of the screw is 350r/min, and the pressure is 16 MPa.
Wherein the filling master batch is prepared from styrene-butadiene-styrene block copolymer, calcium carbonate, chlorinated paraffin and dioctyl phthalate according to a mass ratio of 20: 40: 1: 0.1 mixing; the antioxidant is 2, 6-di-tert-butyl-4-methylphenol.
Wherein the elastomer is prepared by the following steps:
step S11, adding polyethylene glycol 2000 into a three-neck flask, setting the temperature to be 50 ℃ and the rotating speed to be 300r/min, sequentially adding boron trifluoride diethyl etherate and epichlorohydrin, stirring for reacting for 2 hours, then dropwise adding an alkali lignin solution, after dropwise adding the alkali lignin solution, raising the temperature to 80 ℃, keeping the rotating speed unchanged, continuing stirring for 3 hours, after stirring is finished, reducing the temperature to room temperature, adjusting the pH value to be 7 by using 1mol/L hydrochloric acid solution, centrifuging the reaction solution after pH adjustment for 10 minutes at the rotating speed of 10000r/min, mixing the obtained supernatant with absolute ethyl alcohol in an equal volume manner, centrifuging for 10 minutes at the rotating speed of 10000r/min after mixing, retaining the supernatant, and performing rotary evaporation and concentration on the obtained supernatant at 50 ℃ to obtain modified lignin;
step S12, mixing the modified lignin obtained in the step S11 with ethanol water solution with volume fraction of 70%, setting the temperature at 50 ℃ and the rotating speed at 300r/min, adding gamma-aminopropyltriethoxysilane, reacting for 30min, cooling to room temperature after the reaction is finished, mixing the obtained reaction solution with absolute ethanol in equal volume, then carrying out reduced pressure distillation, removing the solvent, and then drying in vacuum at 70 ℃ to constant weight to obtain the auxiliary agent;
and S13, adding polyethylene glycol 2000 and the modified lignin obtained in the step S11 into a reaction kettle, setting the temperature at 70 ℃ and the rotating speed at 600r/min, adding dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water in the stirring process, continuing stirring for 10min after the addition is finished, then adding hexamethylene diisocyanate and an auxiliary agent, increasing the rotating speed to 1000r/min, continuing stirring for 30S, and standing for 2h to obtain the elastomer.
Wherein the alkali lignin solution in the step S11 is alkali lignin and 1mol/L sodium hydroxide solution according to the mass ratio of 1: 3, and the mass ratio of the polyethylene glycol 2000 to the boron trifluoride diethyl etherate complex to the epichlorohydrin to the alkali lignin solution is 130: 1: 6.1: 400, respectively; in the step S12, the using amount ratio of the modified lignin, the ethanol water solution with the volume fraction of 70 percent and the gamma-aminopropyltriethoxysilane is 8 g: 10mL of: 40 mL; in the step S13, the mass ratio of polyethylene glycol 2000, modified lignin, dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water is 1: 1: 0.02: 0.02: 0.01: 0.01; the mass ratio of the modified lignin to the hexamethylene diisocyanate to the auxiliary agent is 3: 1: 1.
comparative example 1
The comparative example is a common ABS blending reclaimed material in the market.
The blends of examples 1-3 and comparative example 1 were tested for performance; the test results are shown in table 1 below:
TABLE 1
| Impact strength KJ/m2 | Bending strength MPa | Tensile strength/MPa | Elongation at break% | Flame retardancy | |
| Example 1 | 20 | 78 | 46 | 46 | V0 |
| Example 2 | 21 | 79 | 48 | 44 | V0 |
| Example 3 | 22 | 79 | 47 | 40 | V0 |
| Comparative example 1 | 18 | 68 | 41 | 38 | V0 |
As can be seen from table 1, the ABS-like blended recycled material prepared in examples 1 to 3 has more excellent properties than a commercially available ABS blended recycled material, and is environmentally friendly when prepared using recycled materials.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (6)
1. The blending reclaimed material with the ABS performance imitation is characterized by being prepared by the following steps:
firstly, weighing the following raw materials in parts by weight: 50-75 parts of reclaimed materials, 8-10 parts of filling master batch, 10-20 parts of elastomer, 60-90 parts of polycarbonate, 1-3 parts of maleic anhydride and 5-10 parts of antioxidant;
secondly, adding the reclaimed materials, the filling master batch, the elastomer, the polycarbonate and the maleic anhydride into a high-speed stirrer, mixing and stirring for 2-4min, then adding the antioxidant, and continuously stirring for 4-6min to obtain a mixture;
thirdly, adding the obtained mixture into a double-screw extruder, and performing melt extrusion, bracing, cooling and granulation to obtain a blended reclaimed material with the ABS-like performance; the temperature of each zone of the double-screw extruder is controlled at 180 ℃ to 240 ℃.
2. The blended reclaimed material with the ABS performance imitation of claim 1, wherein the preparation process of the reclaimed material comprises the following steps:
washing the polypropylene reclaimed material with ethylene glycol at 35 ℃, drying at 120 ℃ for 2-4h after washing, and crushing into particles with the particle size of 2-4mm after drying, namely the reclaimed material.
3. The blended reclaimed material with the ABS performance imitation of claim 1, wherein the process conditions of a double-screw extruder are as follows: the temperature of the first zone is 180-fold, the temperature of the second zone is 195-fold, the temperature of the third zone is 205-fold, the temperature of the fourth zone is 205-fold, the temperature of the fifth zone is 210-fold, the temperature of the sixth zone is 215-fold, the temperature of the seventh zone is 220-fold, the rotation speed of the screw is 300-fold at 350r/min, and the pressure is 14-16 MPa.
4. The blending regrind material with imitated ABS performance as claimed in claim 1, wherein the filling master batch is styrene-butadiene-styrene block copolymer, calcium carbonate, chlorinated paraffin and dioctyl phthalate according to a mass ratio of 20: 40: 1: 0.1 mixing; the antioxidant is one of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester or 2, 6-di-tert-butyl-4-methylphenol.
5. The blended regrind with imitated ABS performance as claimed in claim 1, wherein the elastomer is prepared by the following steps:
step S11, adding polyethylene glycol 2000 into a three-neck flask, setting the temperature to be 50 ℃ and the rotating speed to be 300r/min, sequentially adding boron trifluoride diethyl etherate and epichlorohydrin, stirring for reacting for 2 hours, then dropwise adding an alkali lignin solution, after dropwise adding the alkali lignin solution, raising the temperature to 80 ℃, keeping the rotating speed unchanged, continuing stirring for 3 hours, after stirring is finished, reducing the temperature to room temperature, adjusting the pH value to be 7 by using 1mol/L hydrochloric acid solution, centrifuging the reaction solution after pH adjustment for 10 minutes at the rotating speed of 10000r/min, mixing the obtained supernatant with absolute ethyl alcohol in an equal volume manner, centrifuging for 10 minutes at the rotating speed of 10000r/min after mixing, retaining the supernatant, and performing rotary evaporation and concentration on the obtained supernatant at 50 ℃ to obtain modified lignin;
step S12, mixing the modified lignin obtained in the step S11 with ethanol water solution with volume fraction of 70%, setting the temperature at 50 ℃ and the rotating speed at 300r/min, adding gamma-aminopropyltriethoxysilane, reacting for 30min, cooling to room temperature after the reaction is finished, mixing the obtained reaction solution with absolute ethanol in equal volume, then carrying out reduced pressure distillation, removing the solvent, and then drying in vacuum at 70 ℃ to constant weight to obtain the auxiliary agent;
and S13, adding polyethylene glycol 2000 and the modified lignin obtained in the step S11 into a reaction kettle, setting the temperature at 70 ℃ and the rotating speed at 600r/min, adding dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water in the stirring process, continuing stirring for 10min after the addition is finished, then adding hexamethylene diisocyanate and an auxiliary agent, increasing the rotating speed to 1000r/min, continuing stirring for 30S, and standing for 1-2h to obtain the elastomer.
6. The blended reclaimed material with imitated ABS performance of claim 5, wherein the alkali lignin solution in the step S11 is alkali lignin and 1mol/L sodium hydroxide solution according to a mass ratio of 1: 3, the mass ratio of polyethylene glycol 2000, boron trifluoride diethyl etherate complex, epichlorohydrin to alkali lignin solution is 120-: 1: 6.1: 400, respectively; in the step S12, the using amount ratio of the modified lignin, the ethanol water solution with the volume fraction of 70 percent and the gamma-aminopropyltriethoxysilane is 8 g: 10mL of: 40 mL; in the step S13, the mass ratio of polyethylene glycol 2000, modified lignin, dipropylene glycol, dibutyltin dilaurate, triethylene diamine and deionized water is 1: 1: 0.01-0.02: 0.02: 0.01: 0.01; the mass ratio of the modified lignin to the hexamethylene diisocyanate to the auxiliary agent is 1-3: 1: 1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113615653A (en) * | 2021-08-10 | 2021-11-09 | 安徽宏飞钓具有限公司 | Bionic bait convenient to swim and using method thereof |
| CN113698686A (en) * | 2021-08-16 | 2021-11-26 | 安徽冠泓塑业有限公司 | Special material for regenerated modified PP and PE automotive interior and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113615653A (en) * | 2021-08-10 | 2021-11-09 | 安徽宏飞钓具有限公司 | Bionic bait convenient to swim and using method thereof |
| CN113698686A (en) * | 2021-08-16 | 2021-11-26 | 安徽冠泓塑业有限公司 | Special material for regenerated modified PP and PE automotive interior and preparation method thereof |
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