CN112048163A - Preparation method of impact-resistant street lamp shade material - Google Patents
Preparation method of impact-resistant street lamp shade material Download PDFInfo
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Abstract
The invention discloses a preparation method of an impact-resistant street lamp shade material, which belongs to the technical field of high polymer materials, and has the advantages of high light transmittance of the lamp shade, difficult fading, shock resistance, wind and sand resistance, strong scratch resistance, good waterproof performance, shock resistance, burst resistance, outdoor ultraviolet resistance, thermal aging resistance, no softening at high temperature, no obvious change in mechanical properties, mechanical properties and the like in severe environment. The flame-retardant and flame-retardant cable has excellent electrical insulation, extensibility, dimensional stability and chemical corrosion resistance, higher strength, heat resistance and cold resistance, and also has the advantages of self-extinguishing, flame retardance, no toxicity, coloring and the like, and has good electrical properties.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a preparation method of an impact-resistant street lamp shade material.
Background
The lampshade is invented probably soon after people use the lamp. Early lampshades were designed to protect the flames, so the carried lantern had a shade, the held carbide lamp had a shade, the fixed gas lamp had a shade, and even the kerosene lamp often had a shade. Later, electric lamps were invented, namely, the outer surface of the lamp is provided with a layer of glass, and the lamp cover does not need to be additionally provided with a layer of cover, but the style of the lamp cover is more. In order to emphasize the illumination in a small range, a circular reflecting cover is added at the back of the lamp, or a convex lens is arranged at the front of the lamp, so that the lamp becomes a spotlight. In order to give brilliant and brilliant feeling, the periphery of the lamp is decorated with granular or strip-shaped crystals to refract light again; to become a decorative lamp. In order to make the light totally refracted and give a soft feeling to people, the invention discloses an opaque cylindrical lampshade, so that the light only irradiates the ground and the ceiling. In order to read under the lamp and provide indoor illumination by the light penetrating through the lampshade, the umbrella-shaped semitransparent lampshade is invented to make the lower part of the lamp bright and the periphery soft. The existing street lamp has the safety problems of long-term aging of the street lamp, cracking of a lampshade, deflection of a lamp post and the like, and the energy-saving and emission-reducing work is promoted in order to ensure the traveling safety of surrounding people and vehicles. In the past 2000 years, the lamp shade of urban street lamps has samples and types such as a magnolia pillar lamp glass shade, a big and small mushroom glass shade, a high-pressure sodium lamp glass shade and the like, but the glass lamp shade can drop suddenly, people are injured to receive treatment, the glass shade has high density, impact resistance and poor temperature change resistance and is easy to crack, so that part of the existing street lamp shade is replaced by plastic, and the defects are that: the color is changed, the lamp shade is easy to deform at high temperature for a long time, the light scattering performance is poor and the lamp shade is not impact-resistant, and the lamp shade is required to have better flame retardant performance and electrical performance, and a preparation method of an impact-resistant street lamp shade material is urgently needed to be developed by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a preparation method of an impact-resistant street lamp shade material aiming at the existing problems.
The invention is realized by the following technical scheme:
a preparation method of an impact-resistant street lamp lampshade material comprises the following steps: (1) preparing a catalyst: adding 58-63 parts of ethylene glycol dimethyl ether into 4.7-5.1 parts of zinc chloride solution with the mass fraction of 35-38%, gradually adding 38-40 parts of potassium hexacyanocobaltate solution with the mass fraction of 8-9% into the zinc chloride solution, continuously stirring for 20-30 min after the addition is finished, filtering and separating precipitates, and drying in vacuum at the temperature of 50-60 ℃ to constant weight to obtain a catalyst;
(2) preparation of copolymer: in a reaction kettle under the nitrogen protection atmosphere, purging the high-pressure reaction kettle for 10min by using nitrogen, weighing 0.1-0.5 part by weight of the catalyst obtained in the step (1), 27-31 parts by weight of propylene oxide, 15-24 parts by weight of phthalic anhydride, 3-6 parts by weight of maleic anhydride and 10-15 parts by weight of toluene, adding the weighed materials into the reaction kettle, stirring the materials at 25-30 ℃ for 0.5-1 h, and filling CO at 35 ℃ and 1.7-2 Mpa at a flow rate of 25-50 parts/25 min2Continuously heating the mixture for 35-40 min to 105-115 ℃ for stirring reaction, reacting for 2-4 h, stopping stirring, cooling to room temperature, discharging residual gas, washing the obtained reaction precipitate with an ethanol solution containing hydrochloric acid with the mass fraction of 2-3% after discharging, washing the reaction precipitate with ethanol for three times, and drying the product at 50-60 ℃ in vacuum to constant weight to obtain the polycarbonate unsaturated polyester copolymer;
(3) uniformly mixing MBS resin micro powder, polycarbonate unsaturated polyester copolymer, vinyl ester resin and multifunctional light scattering master batch to obtain mixed resin, wherein the weight parts of the components are as follows: MBS resin micropowder: 5-10 parts of a polycarbonate unsaturated polyester copolymer: 80-85 parts of vinyl ester resin: 3-8 parts, multifunctional light scattering master batch: 5-10 parts of diluent: 4-9 parts; the multifunctional light scattering master batch is composed of a phosphorus flame retardant, a light scattering auxiliary agent, an antimony flame retardant, a compound antioxidant, a dispersing lubricant and a carrier resin, and the weight percentages of the components are as follows: compounding an antioxidant: 4.5-5.0%; light scattering auxiliary agent: 12.0-13.5%; antimony-based flame retardant: 12.0-18.0%; polydivinyl acetylene carrier resin: 15.0-20.0%; dispersing the lubricant: 12.0-13.5%; phosphorus flame retardant: 35.0-40.0%, adding the phosphorus flame retardant, the light dispersing auxiliary agent, the antimony flame retardant, the compound antioxidant, the dispersing lubricant and the polydivinyl acetylene carrier resin into a high-speed mixer, mixing for 10-15 minutes, adding the mixture into a double-screw extruder, extruding and granulating at 160-180 ℃, and cooling, grinding and crushing to 800-1500 meshes to obtain the flame retardant;
(4) and (3) drying the mixed resin obtained in the step (3) at the temperature of 60-70 ℃ for 1-2 hours, adding a curing agent accounting for 2-5% of the mass of the mixed resin, uniformly stirring for 5-10 minutes, heating the mixed material to 160-180 ℃, putting the heated mixed material into a mold, carrying out compression molding under the pressure of 200-300 MPa to obtain a shell, removing burrs, burrs and the like from the shell, and polishing the shell smoothly to obtain the impact-resistant street lamp shade material.
Further, the phosphorus flame retardant is at least one of the following substances: cyclic alkyl phosphate, tetra (2-cyanoethyl) phosphorus bromide, tris (bromotoluene) phosphate, guanidine phosphate, N-hydroxymethyl-3-dimethylphosphorylpropionamide, tetra (hydroxymethyl) phosphorus chloride, and red phosphorus.
Further, the antimony flame retardant is at least one of the following substances: sodium antimonate, bis (2, 4, 6-tribromophenoxy) triphenylantimony, antimony trichloride and antimony pentachloride.
Further, the vinyl ester resin is one or a mixture of more than two of bisphenol A epoxy acrylate resin, novolac epoxy vinyl ester and urethane vinyl ester resin in any ratio.
Further, the light scattering auxiliary agent is precipitated barium sulfate or precipitated zinc sulfate or a composition of the precipitated barium sulfate and the precipitated zinc sulfate; the compound antioxidant consists of an antioxidant 1010, an antioxidant 1076 and an auxiliary antioxidant DSTP according to the weight ratio of 1:1: 1; the dispersing lubricant is one of morpholine fatty acid salt, diatomite and ethylene bis stearamide.
Further, the diluent is one of diallyl phthalate, methyl styrene and triallyl cyanurate.
Further, the curing agent is one or a mixture of more than two of tert-butyl peroxybenzoate, di-tert-butyl peroxide, dicumyl peroxide and dibenzoyl peroxide in any ratio.
The polycarbonate unsaturated polyester copolymer has the following synthesis mechanism:
the invention has the beneficial effects that:
the invention introduces benzene ring into the main chain of the polymer by the copolymerization of epoxypropane, phthalic anhydride, maleic anhydride and carbon dioxide, changes the main chain structure of the unsaturated polyester of polycarbonate, has carboxyl-terminated reactive groups, inhibits the degradation of the polymer zipper to a certain extent, not only improves the heat resistance of the material, but also compensates the disadvantage of light aging, has good transparency and mechanical property, can further reduce the shrinkage rate by blending and modifying the unsaturated polyester of polycarbonate with thermoplastic plastics, has high volume shrinkage rate after the curing of the general unsaturated polyester, reduces the shrinkage rate after introducing polycarbonate group, but also influences the appearance and the quality of the lampshade, can reduce the molding shrinkage rate of the lampshade by adding copolymer micro powder of three monomers of methyl methacrylate, butadiene and styrene into the polyester, the optical performance of the lampshade cannot be reduced by using MBS, the shock resistance of the lampshade is improved by introducing MBS, the toughness, the corrosion resistance, the heat resistance and the cohesiveness of the lampshade can be improved by introducing vinyl ester resin, the characteristics of polycarbonate unsaturated polyester, vinyl ester resin and MBS are combined into a whole, the lampshade has excellent toughness and water resistance, very high modulus and strength, good process performance, can be cured at room temperature and molded under normal pressure, the cured product has high strength, hardness, wear resistance and favorable creep resistance, the phosphorus flame retardant and the antimony flame retardant are used for flame retarding in a synergistic manner, the crosslinking degree of the lampshade is further improved by using a diluent, the strength of the material is further improved, the multifunctional light scattering master batch is prepared by using raw materials with wide sources, and is crushed and ground to be uniformly dispersed in a material matrix of the lampshade, polydiethylene acetylene resin is used as a carrier resin, the multifunctional light scattering master batch is not used for coloring materials, but has multiple functions of toughening, flame retardance, dispersion, light scattering and the like, has wide raw material sources and convenient use, generally sees that the application uses two thermoplastics of MBS and polydiethylene acetylene resin to modify polycarbonate unsaturated polyester, does not influence the hot-pressing curing molding of a lampshade material, has a promoting effect on processing molding, has larger irradiation area through light scattering, and is suitable for the application of street lamp shades,
compared with the prior art, the invention has the following advantages:
the impact-resistant street lamp shade material disclosed by the invention is lighter than a cast aluminum lamp shade and a glass lamp shade by more than 2 times, greatly lightens the labor intensity of high-altitude operation, has good corrosion resistance, has longer service life than other materials on coastal urban roads and sand-blown roads, has better optical performance and lamp efficiency, uniform road illumination distribution and good lighting effect, saves nonferrous metals, reduces energy consumption, and has attractive and elegant appearance, low cost and simpler manufacturing process; the electric insulation property is good, the electric shock prevention requirement of electric appliance products is met, and the electric shock prevention lamp shade has good impact resistance, yellowing resistance and ageing resistance, which are incomparable with the prior metal lamp shades and thermoplastic PC and PMMA lamp shades and the like, and has wide popularization and application prospects.
Detailed Description
The invention is illustrated by the following specific examples, which are not intended to be limiting.
Example 1
Step one, catalyst preparation: adding 63 parts of ethylene glycol dimethyl ether into 5.1 parts of 38 mass percent zinc chloride solution, gradually adding 40 parts of 9 mass percent potassium hexacyanocobaltate solution into the zinc chloride solution, and continuously stirring for 30min, then filtering and separating the precipitate, and drying the precipitate to constant volume in vacuum at the temperature of below 60 ℃ to obtain a catalyst; second step, preparation of copolymer: in a reaction kettle under the nitrogen protection atmosphere, purging the high-pressure reaction kettle for 10min by using nitrogen, weighing 0.5 part of the catalyst obtained in the first step, 31 parts of propylene oxide, 24 parts of phthalic anhydride, 6 parts of maleic anhydride and 15 parts of toluene in parts by weight, adding the weighed materials into the reaction kettle, stirring the materials at the temperature of 30 ℃ for 1h, and introducing CO into the reaction kettle at the temperature of 35 ℃ and the pressure of 2MPa at the flow rate of 25 parts/25 min2Continuing the gas for 40min, heating to 115 ℃, carrying out stirring reaction, reacting for 4h, stopping stirring, cooling to room temperature, discharging residual gas, washing the obtained reaction precipitate with an ethanol solution containing 3% by mass of hydrochloric acid after discharging, washing with ethanol for three times, and drying the product at 60 ℃ in vacuum to constant weight to obtain the polycarbonate unsaturated polyester copolymer; and step three, uniformly mixing MBS resin micro powder, polycarbonate unsaturated polyester copolymer, urethane vinyl ester resin and multifunctional light scattering master batch to obtain mixed resin, wherein the weight parts of the components are as follows: MBS resin micropowder: 10 parts of a polycarbonate unsaturated polyester copolymer: 85 parts, vinyl ester resin: 8 parts, multifunctional light scattering master batch: 10 parts, diluent: 9 parts of (1); the multifunctional light scattering master batch is composed of a phosphorus flame retardant, a light scattering auxiliary agent, an antimony flame retardant, a compound antioxidant, a dispersion lubricant morpholine fatty acid salt and a carrier resin, and the weight percentages of the components are as follows: compounding an antioxidant: 5.0 percent; light scattering auxiliary agent: 15.0 percent; antimony flame retardant bis (2, 4, 6-tribromophenoxy) triphenylantimony: 18.0 percent; polydivinyl acetylene carrier resin: 15.0 percent; dispersing the lubricant: 12.0 percent; phosphorus flame retardant N-hydroxymethyl-3-dimethylphosphorylpropionamide: 35.0 percent of the total flame retardant, namely adding the phosphorus flame retardant, the light diffusion auxiliary agent, the antimony flame retardant, the compound antioxidant, the dispersing lubricant and the polydivinyl acetylene carrier resin into a high-speed mixer for mixing for 15 minutes, then adding the mixture into a double-screw extruder, extruding and granulating at 180 ℃, and cooling, grinding and crushing to 1500 meshes to obtain the flame retardant; fourthly, drying the mixed resin obtained in the third step for 2 hours at the temperature of 70 ℃, then adding a curing agent tert-butyl peroxybenzoate accounting for 5 percent of the mass of the mixed resin, uniformly stirring for 10 minutes, heating the mixed material to 180 ℃, and then putting the mixed material into a moldThe method comprises the steps of performing compression molding under the pressure of 300MPa to obtain a shell, removing burrs, burrs and the like from the shell, and polishing the shell smoothly to obtain the impact-resistant street lamp shade material, wherein the light diffusion auxiliary agent is precipitated barium sulfate; the compound antioxidant consists of an antioxidant 1010, an antioxidant 1076 and an auxiliary antioxidant DSTP according to the weight ratio of 1:1: 1; the diluent is diallyl phthalate.
MBS resin micropowder is purchased from Brillouin Kane ACE B-564, ethyl carbamate vinyl ester resin is Atlac580, precipitated barium sulfate is a tin-free Mainsde chemical 3000-mesh product, and polydivinyl acetylene has a molecular weight of 6000.
Example 2
Step one, catalyst preparation: adding 58 parts of ethylene glycol dimethyl ether into 4.7 parts of zinc chloride solution with the mass fraction of 35%, gradually adding 38 parts of potassium hexacyanocobaltate solution with the mass fraction of 8% into the zinc chloride solution, continuing stirring for 20min after the addition is finished, filtering and separating precipitates, and drying in vacuum at the temperature of below 50 ℃ to constant weight to obtain a catalyst; second step, preparation of copolymer: in a reaction kettle under the nitrogen protection atmosphere, purging the high-pressure reaction kettle for 10min by using nitrogen, weighing 0.1 part by weight of the catalyst obtained in the first step, 27 parts by weight of propylene oxide, 15 parts by weight of phthalic anhydride, 6 parts by weight of maleic anhydride and 15 parts by weight of toluene, adding the weighed materials into the reaction kettle, stirring the materials at 25 ℃ for 1h, and filling CO at 35 ℃ and 1.7Mpa at a flow rate of 25 parts/25 min2After the gas lasts for 35min, heating to 115 ℃ for stirring reaction, reacting for 2h, stopping stirring, cooling to room temperature, discharging residual gas, washing the obtained reaction precipitate with an ethanol solution containing hydrochloric acid with the mass fraction of 2%, washing with ethanol for three times, and drying the product at 50 ℃ in vacuum to constant weight to obtain the polycarbonate unsaturated polyester copolymer; and step three, uniformly mixing MBS resin micro powder, polycarbonate unsaturated polyester copolymer, urethane vinyl ester resin and multifunctional light scattering master batch to obtain mixed resin, wherein the weight parts of the components are as follows: MBS resin micropowder: 10 parts of a polycarbonate unsaturated polyester copolymer: 80 parts of novolac epoxy vinyl ester: 3 parts of multifunctional light scattering master batch: 10 parts, diluent: 9 parts of (1); the multifunctional light scattering master batch is prepared from a phosphorus flame retardant and a light scattering auxiliary agentThe flame retardant comprises an antimony flame retardant, a compound antioxidant, a dispersion lubricant ethylene bis stearamide and a carrier resin, wherein the weight percentage of each component is as follows: compounding an antioxidant: 4.5 percent; light scattering auxiliary agent: 15 percent; antimony flame retardant sodium antimonate 12.0%; polydivinyl acetylene carrier resin: 15.0 percent; dispersing the lubricant: 13.5 percent; phosphorus flame retardant tetrakis (hydroxymethyl) phosphonium chloride: 40.0 percent of phosphorus flame retardant, light dispersing auxiliary agent, antimony flame retardant, compound antioxidant, dispersing lubricant and polydivinyl acetylene carrier resin are added into a high-speed mixer to be mixed for 15 minutes, then the mixture is added into a double-screw extruder to be extruded and granulated at 180 ℃, and then the mixture is cooled, ground and crushed to 1500 meshes to obtain the flame retardant; fourthly, drying the mixed resin obtained in the third step for 2 hours at the temperature of 70 ℃, adding a curing agent tert-butyl peroxybenzoate accounting for 2-5% of the mass of the mixed resin, uniformly stirring for 10 minutes, heating the mixed material to 160-180 ℃, putting the mixed material into a mold, carrying out compression molding under the pressure of 200MPa to obtain a shell, removing burrs, burrs and the like from the shell, and polishing the shell smoothly to obtain the impact-resistant street lamp shade material, wherein the light diffusion auxiliary agent is precipitated barium sulfate; the compound antioxidant consists of an antioxidant 1010, an antioxidant 1076 and an auxiliary antioxidant DSTP according to the weight ratio of 1:1: 1; the diluent is diallyl phthalate.
MBS resin micropowder is purchased from Brillouin Kane ACEB-625, novolac epoxy vinyl ester Norpol Dion9400, precipitated barium sulfate is a tin-free Mainsde chemical 3000 mesh product, and polydivinyl acetylene has a molecular weight of 5000.
Comparative example 1
This comparative example is compared with example 1, and MBS resin fine powder was omitted in the third step, except that the other steps of the method were the same.
Comparative example 2
This comparative example compares to example 2 in that the vinyl ester resin was omitted in the third step, except that the process steps were otherwise identical.
Comparative example 3
This comparative example compares to example 2 in that the diluent dispersant is omitted in the third step, except that the process steps are otherwise identical.
The performance of the impact-resistant street lamp shade materials of the examples 1-2 and the comparative examples 1-3 is tested, and the test results are shown in Table 1
TABLE 1 Performance test results of the method of making the impact resistant street light cover material for each of the examples and comparative examples
| Item | Example 1 | Example 2 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Tensile strength MPa | 63.4 | 61.2 | 62.7 | 62.9 | 60.4 |
| Tensile strain at break% | 82.3 | 83.4 | 81.6 | 80.3 | 84.7 |
| Impact strength KJ/m of simply supported beam gap2 | 11.2 | 11.4 | 10.2 | 11.6 | 11.5 |
| 1.8MPa load heat distortion temperature DEG C | 108.7 | 107.5 | 105.6 | 105.5 | 106.3 |
| 750 ℃ glow wire | Qualified | Qualified | Qualified | Qualified | Qualified |
| Light transmittance | 41.3 | 41.7 | 40.8 | 42.3 | 41.9 |
| Flame retardant rating | V-1 | V-1 | V-1 | V-1 | V-1 |
| Haze%) | 91.2 | 91.7 | 91.3 | 90.9 | 91.7 |
| Uniformity of light transmittance% | 98.3 | 98.4 | 98.5 | 98.3 | 98.4 |
| Color difference value Delta E | 2.3 | 2.4 | 2.7 | 2.6 | 2.9 |
| Volume resistivity Ω · m | 4.1×1013 | 2.8×1013 | 4.7×1013 | 7.5×1013 | 2.9×1013 |
| Shrinkage ratio% | 0.6 | 0.7 | 3.6 | 5.1 | 0.5 |
Note: sampling is carried out according to the regulation of GB/T2547-2008; preparation of a sample of type 1A, a sample of 80 mm. times.10 mm. times.4 mm long strip in GB/T1040.1-2006, as specified in GB/T17037.1-1997, and use for the determination of the combustionAnd (3) performance, optical performance, color difference value and volume resistivity. The surface of the sample has no defects which influence the test, such as scratches, flash, warping, cavities, sink marks and the like; 5 state regulation under the environment of 23 ℃ and 50% relative humidity, the state regulation is carried out for 24h according to the relevant regulation of GB/T2918-1998; the environmental protection inspection is carried out according to the limit requirement of toxic or harmful substances in SJ/T11365-2006; the tensile strength and the breaking tensile strain are tested according to the GB/T1040.1-2006 specification; the impact strength of the notch of the simply supported beam is tested according to the 1eA regulation of GB/T1043.1-2008; the load deformation temperature is tested according to the regulation of the A method in GB/T1634.2-2004; the glow wire is tested according to the GB/T5169.11-2006 specification; the flame retardant grade is tested according to the GB/T2408-2008 regulation; the sample size of the light transmittance, the haze and the uniformity of the light transmittance is 80mm multiplied by 80mm, the thickness is 1mm, and the light transmittance and the haze are tested according to GB/T2410-2008. The light transmittance uniformity randomly takes 5 points on the surface of a sample, the range of the random point is larger than 10mm, the distance between the edges of the random two points exceeds 12mm, the light transmittance is tested according to GB/T2410-2008, and the minimum value is taken as the light transmittance uniformity according to the ratio of the light transmittance of a single point to the average light transmittance in the formula (1) in 3.3; aging color difference value, performing photoaging treatment according to GB/T16422.3-2014, UV340nm, and irradiation intensity of 0.55W/m2And the irradiation time is 168h, the color difference value is the color difference value before and after aging, the test is carried out according to the regulation of GB/T15596-2009, and the volume resistivity is tested according to GB/T-2006.
In conclusion, the impact-resistant street lamp shade material disclosed by the invention meets the use requirements of the existing street lamp shade, and has better impact resistance.
Claims (7)
1. The preparation method of the impact-resistant street lamp shade material is characterized by comprising the following steps of: (1) preparing a catalyst: adding 58-63 parts of ethylene glycol dimethyl ether into 4.7-5.1 parts of zinc chloride solution with the mass fraction of 35-38%, gradually adding 38-40 parts of potassium hexacyanocobaltate solution with the mass fraction of 8-9% into the zinc chloride solution, continuously stirring for 20-30 min after the addition is finished, filtering and separating precipitates, and drying in vacuum at the temperature of 50-60 ℃ to constant weight to obtain a catalyst;
(2) copolymerPreparation: in a reaction kettle under the nitrogen protection atmosphere, purging the high-pressure reaction kettle for 10min by using nitrogen, weighing 0.1-0.5 part by weight of the catalyst obtained in the step (1), 27-31 parts by weight of propylene oxide, 15-24 parts by weight of phthalic anhydride, 3-6 parts by weight of maleic anhydride and 10-15 parts by weight of toluene, adding the weighed materials into the reaction kettle, stirring the materials at 25-30 ℃ for 0.5-1 h, and filling CO at 35 ℃ and 1.7-2 Mpa at a flow rate of 25-50 parts/25 min2After the gas lasts for 35-40 min, heating to 105-115 ℃ for stirring reaction, reacting for 2-4 h, stopping stirring, cooling to room temperature, discharging residual gas, washing the obtained reaction precipitate with an ethanol solution containing 2-3% by mass of hydrochloric acid after discharging, washing the reaction precipitate with ethanol for three times, and drying the product at 50-60 ℃ in vacuum to constant weight to obtain the polycarbonate unsaturated polyester copolymer;
(3) uniformly mixing MBS resin micro powder, polycarbonate unsaturated polyester copolymer, vinyl ester resin and multifunctional light scattering master batch to obtain mixed resin, wherein the weight parts of the components are as follows: MBS resin micropowder: 5-10 parts of a polycarbonate unsaturated polyester copolymer: 80-85 parts of vinyl ester resin: 3-8 parts, multifunctional light scattering master batch: 5-10 parts of diluent: 4-9 parts; the multifunctional light scattering master batch is composed of a phosphorus flame retardant, a light scattering auxiliary agent, an antimony flame retardant, a compound antioxidant, a dispersing lubricant and a carrier resin, and the weight percentages of the components are as follows: compounding an antioxidant: 4.5-5.0%; light scattering auxiliary agent: 12.0-13.5%; antimony-based flame retardant: 12.0-18.0%; polydivinyl acetylene carrier resin: 15.0-20.0%; dispersing the lubricant: 12.0-13.5%; phosphorus flame retardant: 35.0-40.0%, adding the phosphorus flame retardant, the light dispersing auxiliary agent, the antimony flame retardant, the compound antioxidant, the dispersing lubricant and the polydivinyl acetylene carrier resin into a high-speed mixer, mixing for 10-15 minutes, adding the mixture into a double-screw extruder, extruding and granulating at 160-180 ℃, and cooling, grinding and crushing to 800-1500 meshes to obtain the flame retardant;
(4) and (3) drying the mixed resin obtained in the step (3) at the temperature of 60-70 ℃ for 1-2 hours, adding a curing agent accounting for 2-5% of the mass of the mixed resin, uniformly stirring for 5-10 minutes, heating the mixed material to 160-180 ℃, putting the heated mixed material into a mold, carrying out compression molding under the pressure of 200-300 MPa to obtain a shell, removing burrs, burrs and the like from the shell, and polishing the shell smoothly to obtain the impact-resistant street lamp shade material.
2. The method for preparing the impact-resistant street lamp shade material as claimed in claim 1, wherein the light diffusion auxiliary agent is precipitated barium sulfate or precipitated zinc sulfate or a combination of the precipitated barium sulfate and the precipitated zinc sulfate; the compound antioxidant consists of an antioxidant 1010, an antioxidant 1076 and an auxiliary antioxidant DSTP according to the weight ratio of 1:1: 1; the dispersing lubricant is one of morpholine fatty acid salt, diatomite and ethylene bis stearamide.
3. The method for preparing the impact-resistant street lamp lampshade material according to claim 1, wherein the phosphorus flame retardant is at least one of the following substances: cyclic alkyl phosphate, tetra (2-cyanoethyl) phosphorus bromide, tris (bromotoluene) phosphate, guanidine phosphate, N-hydroxymethyl-3-dimethylphosphorylpropionamide, tetra (hydroxymethyl) phosphorus chloride, and red phosphorus.
4. The method for preparing the impact-resistant street lamp shade material as claimed in claim 1, wherein the antimony-based flame retardant is at least one of the following substances: sodium antimonate, bis (2, 4, 6-tribromophenoxy) triphenylantimony, antimony trichloride and antimony pentachloride.
5. The method for preparing the impact-resistant street lamp shade material as claimed in claim 1, wherein the vinyl ester resin is one or a mixture of more than two of bisphenol A epoxy acrylate resin, novolac epoxy vinyl ester and urethane vinyl ester resin in any ratio.
6. The method for preparing the lampshade material of the impact-resistant street lamp as claimed in claim 1, wherein the diluent is one of diallyl phthalate, methyl styrene and triallyl cyanurate.
7. The method for preparing the lampshade material of the impact-resistant street lamp as claimed in claim 1, wherein the curing agent is one or a mixture of more than two of tert-butyl peroxybenzoate, di-tert-butyl peroxide, dicumyl peroxide and dibenzoyl peroxide in any ratio.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115594924A (en) * | 2021-07-07 | 2023-01-13 | 常熟卓辉光电科技股份有限公司（Cn） | Lampshade antibacterial material and preparation method thereof |
| CN116003927A (en) * | 2023-03-27 | 2023-04-25 | 山东泰瑞丰新材料有限公司 | Butyl rubber capable of being repeatedly processed and preparation method thereof |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115594924A (en) * | 2021-07-07 | 2023-01-13 | 常熟卓辉光电科技股份有限公司（Cn） | Lampshade antibacterial material and preparation method thereof |
| CN116003927A (en) * | 2023-03-27 | 2023-04-25 | 山东泰瑞丰新材料有限公司 | Butyl rubber capable of being repeatedly processed and preparation method thereof |
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Application publication date: 20201208 |