CN110437554B - Transparent polystyrene material capable of expelling insects and preparation method thereof - Google Patents
Transparent polystyrene material capable of expelling insects and preparation method thereof Download PDFInfo
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- CN110437554B CN110437554B CN201910687416.8A CN201910687416A CN110437554B CN 110437554 B CN110437554 B CN 110437554B CN 201910687416 A CN201910687416 A CN 201910687416A CN 110437554 B CN110437554 B CN 110437554B
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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
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
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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
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- Chemical Kinetics & Catalysis (AREA)
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a transparent polystyrene composite material capable of expelling insects and a preparation method thereof. The insect-repellent transparent polystyrene composite material comprises the following components in parts by weight: 80-94 parts of polystyrene, 1-5 parts of light diffusant and 1-5 parts of insect repellent. The high-transparency polystyrene is selected as the base material, and the light diffusant and the insect repellent are added to prepare the polystyrene composite material which has good light transmission, insect repelling and light diffusion effects, so that the polystyrene composite material is successfully applied to the lighting industry to prevent mosquito interference.
Description
Technical Field
The invention relates to the technical field of polystyrene composite materials, in particular to a transparent polystyrene material capable of expelling insects and a preparation method thereof.
Background
Along with the acceleration of the industrialization process, the damage of human beings to the environment is aggravated, the environmental pollution is more and more serious, the breeding conditions of mosquitoes, insects, ants and the like in the environment are more serious than before, and the trouble is brought to the life of people. Under the condition that the urbanization is more and more advanced, the advertisement board lamps of commercial and household use are used throughout every corner of the city, but the trouble of mosquito interference is more and more obvious in the process of long-term use of the advertisement board lamps. Mosquitoes like to chase the light source and even adsorb on the light source until dead bodies are adhered on the light source, so that the lighting effect of the street lamp is easily influenced, and even the lamp is easily short-circuited for a long time to cause fire. Therefore, a material is urgently needed, mosquitoes can be driven in the using process, and the mosquitoes cannot be attached to the lamp, so that the lighting effect of the light source and the safety of the billboard lamp are well guaranteed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the insect-repellent transparent polystyrene material and the preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the transparent polystyrene composite material capable of expelling insects comprises the following components in parts by weight: 80-94 parts of polystyrene, 1-5 parts of light diffusant and 1-5 parts of insect repellent.
The invention selects the polystyrene with high transparency as the base material, ensures that the material has higher light transmittance, and simultaneously adds the light diffusant, so that light rays pass through the material and are refracted for many times, thereby playing the roles of light diffusion and light emitting surface expansion, and achieving the effect of light rays with less loss due to soft light transmission; the composite material has good insect expelling property due to the addition of the insect repellant, wherein the insect expelling effect of the composite material is not obvious if the content of the insect repellant is too low, and the mechanical property of the composite material is reduced, the composite material is easy to crack and is not beneficial to forming if the content of the insect repellant is too high, so that the content of the insect repellant in the composite material is comprehensively considered to be 1-5 parts by weight. The polystyrene composite material prepared by the invention has good light transmittance, insect repelling effect and light diffusion effect, and is suitable for the field of illumination.
Preferably, the insect repellant is at least one of permethrin, cypermethrin, deltamethrin and tetramethrin.
Preferably, the insect repellent is a mixture of deltamethrin and tetramethrin, and the weight ratio of deltamethrin to tetramethrin is 2: 3.
The inventor finds that a mixture of deltamethrin and tetramethrin is selected as the insect repellent through a plurality of tests, and when the weight ratio of deltamethrin to tetramethrin is 2: and 3, the insect expelling effect is optimal.
Preferably, the light diffusing agent is a silicone light diffusing agent. Compared with other light diffusants, the organic silicon light diffusant selected by the application has a better light diffusion effect in polystyrene plastics.
Preferably, the transparent polystyrene composite material further comprises the following components in parts by weight: 5-15 parts of a toughening agent. The addition of the toughening agent helps to improve the processability and formability of the composite material.
Preferably, the toughening agent is a transparent acrylonitrile-butadiene-styrene copolymer, so that the composite material has good light transmission.
Preferably, the toughening agent has a melt flow rate of 1 to 30g/10min according to ASTM D-1238 at a temperature of 200 ℃ under a load of 5 kg.
Preferably, the polystyrene is a general purpose polystyrene.
Preferably, the polystyrene has a melt flow rate of 1 to 40g/10min according to ASTM D-1238 at a temperature of 220 ℃ under a load of 10 kg.
The invention also provides a preparation method of the insect-repellent transparent polystyrene composite material, which comprises the following steps:
(1) weighing various raw materials according to a ratio;
(2) and (2) adding the raw materials in the step (1) into a double-screw extruder with the length-diameter ratio of 36-40: 1, and performing melt extrusion granulation at the extrusion temperature of 170-210 ℃ to obtain the insect-repellent transparent polystyrene composite material.
Compared with the prior art, the invention has the beneficial effects that:
the high-transparency polystyrene is selected as the base material, and the light diffusant and the insect repellent are added to prepare the polystyrene composite material which has good light transmission, insect repelling and light diffusion effects, so that the polystyrene composite material is successfully applied to the lighting industry to prevent mosquito interference.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples. It will be understood by those skilled in the art that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the examples, the experimental methods used were all conventional methods unless otherwise specified, and the materials, reagents and the like used were commercially available without otherwise specified.
The raw materials used in the examples and comparative examples are now described below, but are not limited to these materials:
polystyrene: GPPS 818K, general purpose polystyrene, having a melt flow rate of 2.3g/10min according to ASTM D-1238 under test conditions of temperature 200 ℃ and load of 5 kg;
a toughening agent: MABS TR558A, clear acrylonitrile-butadiene-styrene copolymer, melt flow rate 23g/10min at 220 ℃ under 10kg load according to ASTM D-1238;
light diffusing agent: XB-150, organic silicon light diffusant; EXL-5136, acrylate light diffuser.
Examples 1 to 10
The composition components of the insect-repellent transparent polystyrene composite of examples 1 to 10 are shown in table 1, wherein the method for preparing the insect-repellent transparent polystyrene composite of examples 1 to 10 comprises the steps of:
(1) weighing various raw materials according to a ratio;
(2) adding polystyrene, a toughening agent, a light diffusing agent and an insect repellent into a double-screw extruder with the length-diameter ratio of 36-40: 1, and performing melt extrusion granulation at the extrusion temperature of 170-210 ℃ to obtain the insect-repellent transparent polystyrene composite material.
Comparative examples 1 to 7
The composition components of the polystyrene composite materials of comparative examples 1 to 7 are shown in table 1, and the preparation method of the polystyrene material of comparative examples 1 to 7 comprises the following steps:
(1) weighing various raw materials according to a ratio;
(2) adding the raw materials into a double-screw extruder with the length-diameter ratio of 36-40: 1, and performing melt extrusion granulation at the extrusion temperature of 170-210 ℃ to obtain the polystyrene composite material.
The following performance tests were performed on the transparent polystyrene composites of examples 1 to 10 and comparative examples 1 to 7, and the results are shown in table 1.
Evaluation of light diffusibility: the material is made into a spherical bulb shape, a light source is arranged in the bulb, whether the light source is dazzling or not is observed, and the judgment grade is 5, and the like, and the steps are as follows: poor, normal, medium, good, excellent.
The haze and transmittance tests were carried out using the GB/T2410-2008 standard.
Evaluation of insect repellency: make the material into spherical bulb form, built-in light source places in spacious mosquito more department, observes mosquito quantity around the lamp lights 2 hours later, and the evaluation grade divide into 5 etc. do respectively: poor, normal, medium, good, excellent.
TABLE 1
In addition: in comparative example 7, the final product material was brittle and easy to crack, and was not suitable for molding.
From the results of comparative examples 1 to 6, it can be seen that the light diffusion properties of the polystyrene composite are poor in the absence of the addition of the light diffuser; when the content of the insect repellent is 0 to 5 parts by weight, the insect repellent effect of the polystyrene composite material is improved with the increase of the content of the insect repellent, but the influence on the light transmittance is small; under the condition of the same content of the insect repellent, compared with single use of deltamethrin and tetramethrin, the mixture compounded by deltamethrin and tetramethrin according to the weight ratio of 2:3 has better insect repellent effect. In addition, in the test, when the content of the insect repellent in the comparative example 7 reaches 7 parts by weight, and the weight ratio of the deltamethrin to the tetramethrin is 3:4, the insect repellent effect of the composite material is general, and the material is brittle and serious, easy to crack and unfavorable for molding use due to the excessively high content of the insect repellent in the polystyrene material.
From the results of comparative example 1 and examples 1 to 3, it can be seen that the addition of the light diffuser can improve the light diffusing property, haze and light transmittance of the polystyrene composite material to some extent, and when the content of the light diffuser is 4 parts by weight, the light diffusing property, haze and light transmittance of the prepared polystyrene composite material are better, and when the content of the light diffuser is increased to 5 parts by weight, the light diffusing property, haze and light transmittance of the material are slightly reduced. From the results of examples 3 and 4, it is clear that the material added with the XB-150 silicone light diffuser has better light diffusion effect, higher transmittance and haze than the material added with the EXL-5136 acrylate light diffuser under the condition of the same content of the light diffuser.
Comparing the results of example 2 and example 7, or examples 3 and 5 to 6, it is found that when the content of the light diffusing agent and the content of the insect repellent are the same, the insect repellent effect of the composite material can be obviously improved by adjusting the formulation type of the insect repellent and the formulation ratio thereof, and when the weight ratio of deltamethrin to tetramethrin is 2:3, the insect repellent effect is optimal.
From the results of examples 8 to 10, it is clear that the addition of the toughening agent does not greatly affect the light transmittance, insect repellent and light diffusion effects of the polystyrene composite material.
According to the invention, according to the actually required fluidity and processability, the polystyrene with the melt flow rate of 1-40g/10min under the test conditions of 220 ℃ of temperature and 10kg of load according to the ASTM D-1238 standard can be selected; selecting a toughening agent with the melt flow rate of 1-30g/10min under the test conditions of 200 ℃ of temperature and 5kg of load according to the ASTM D-1238 standard.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The transparent polystyrene composite material capable of expelling insects is characterized by comprising the following components in parts by weight: 80-94 parts of polystyrene, 4-5 parts of organic silicon light diffusant and 1-5 parts of insect repellent;
the insect repellant is a mixture of deltamethrin and tetramethrin, and the weight ratio of deltamethrin to tetramethrin is 2: 3.
2. The insect-repellent transparent polystyrene composite material according to claim 1, further comprising the following components in parts by weight: 5-15 parts of a toughening agent.
3. The insect-repellant transparent polystyrene composite of claim 2, wherein the toughening agent is a transparent acrylonitrile-butadiene-styrene copolymer.
4. The insect-repellent transparent polystyrene composite of claim 3, wherein said toughening agent has a melt flow rate of 1 to 30g/10min at a temperature of 200 ℃ and a load of 5kg according to ASTM D-1238.
5. The insect-repellent transparent polystyrene composite of claim 1, wherein said polystyrene is general purpose polystyrene.
6. The insect-repellent transparent polystyrene composite of claim 5, wherein said polystyrene has a melt flow rate of 1-40g/10min at a temperature of 220 ℃ and a load of 10kg according to ASTM D-1238.
7. The method for preparing an insect-repellent transparent polystyrene composite according to any one of claims 1 to 6, comprising the steps of:
(1) weighing various raw materials according to a ratio;
(2) and (2) adding the raw materials in the step (1) into a double-screw extruder with the length-diameter ratio of 36-40: 1, and performing melt extrusion granulation at the extrusion temperature of 170-210 ℃ to obtain the insect-repellent transparent polystyrene composite material.
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| CN110437554B true CN110437554B (en) | 2022-02-18 |
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