CN118325246A - Polystyrene composite material and preparation method and application thereof - Google Patents
Polystyrene composite material and preparation method and application thereof Download PDFInfo
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- CN118325246A CN118325246A CN202410593240.0A CN202410593240A CN118325246A CN 118325246 A CN118325246 A CN 118325246A CN 202410593240 A CN202410593240 A CN 202410593240A CN 118325246 A CN118325246 A CN 118325246A
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- 239000002131 composite material Substances 0.000 title claims abstract description 56
- 239000004793 Polystyrene Substances 0.000 title claims abstract description 55
- 229920002223 polystyrene Polymers 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 44
- 239000011347 resin Substances 0.000 claims abstract description 44
- 229920005990 polystyrene resin Polymers 0.000 claims abstract description 28
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 27
- -1 polypropylene Polymers 0.000 claims abstract description 14
- 239000000155 melt Substances 0.000 claims abstract description 13
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 11
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 229920001155 polypropylene Polymers 0.000 claims abstract description 9
- 229920013716 polyethylene resin Polymers 0.000 claims abstract description 5
- 239000001993 wax Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 239000000314 lubricant Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 239000012170 montan wax Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 40
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 15
- 238000012360 testing method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000010101 extrusion blow moulding Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000001542 size-exclusion chromatography Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003075 superhydrophobic effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The invention discloses a polystyrene composite material, a preparation method and application thereof, and belongs to the technical field of high polymer materials. The polystyrene composite material comprises the following components in parts by weight: 80-120 parts of polystyrene resin, 2-6 parts of silicone, 2-6 parts of carrier resin, 1-4 parts of wax and 1-5 parts of compatilizer; the weight average molecular weight of the silicone is not less than 50 ten thousand, and the carrier resin comprises at least one of polyethylene resin and polypropylene resin; the melt flow index of the polystyrene resin is not less than 5g/10min at 200 ℃ under a load of 5 kg. According to the invention, the polystyrene resin, the compatilizer and the specific hydrophobic master batch are compounded, so that the surface hydrophobicity of the material can be obviously improved while the good mechanical property is maintained, and the polystyrene composite material is suitable for preparing various hydrophobic self-cleaning products.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a polystyrene composite material and a preparation method and application thereof.
Background
Polystyrene composites are typically improved in toughness and impact resistance by adding polybutadiene rubber to the polystyrene to allow better energy absorption when subjected to force, thereby reducing the risk of cracking and fracture. The polystyrene composite material has good molding performance, can be manufactured into products with various shapes through processes such as injection molding, extrusion molding, blow molding and the like, and is generally used for manufacturing electronic product shells, household appliance accessories, toys, packaging materials and other products. However, the existing polystyrene composite material has large surface tension and poor surface hydrophobicity, and stains are easily left on the surface of a manufactured part, so that the self-cleaning requirements of household appliances such as kitchens, bathing and the like cannot be met.
The current method for making the surface highly hydrophobic basically adopts surface coating treatment. The invention patent with publication number of CN106752424A discloses a polystyrene abrasion-resistant integrated super-hydrophobic coating, which is formed by modifying polystyrene, adding a cross-linking agent (polytetrafluoroethylene) and mixing nano silicon dioxide particles. However, the surface coating treatment is complex in treatment process and high in cost, and the binding force between the coating and the substrate is difficult to ensure for a long time, so that the hydrophobic effect is gradually deteriorated when the coating is used for a long time.
The invention patent with publication number of CN107163389A provides a high-surface-hydrophobicity scratch-resistant polypropylene resin and a preparation method thereof. The fluorine-containing auxiliary agent is compounded with nano zinc oxide to construct the surface of the micron-nano composite structure, so that the surface energy of the material is greatly reduced, and the surface hydrophobicity of the polypropylene material is greatly improved. However, the addition of zinc oxide can significantly reduce the performance of the material.
Therefore, it is very necessary to develop a polystyrene composite material with good mechanical properties and good surface hydrophobicity.
Disclosure of Invention
Based on the defects existing in the prior art, the invention aims to provide a polystyrene composite material and a preparation method and application thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
In a first aspect, the invention provides a polystyrene composite material, which comprises the following components in parts by weight:
80-120 parts of polystyrene resin, 2-6 parts of silicone, 2-6 parts of carrier resin, 1-4 parts of wax and 1-5 parts of compatilizer;
The silicone has a weight average molecular weight of not less than 50 ten thousand, the carrier resin comprises at least one of a polyethylene resin having a melt flow index of not less than 15g/10min at 190 ℃ under a load of 2.16kg according to ISO1133-2011 and a polypropylene resin having a melt flow index of not less than 20g/10min at 230 ℃ under a load of 2.16kg according to ISO 1133-2011;
The polystyrene resin has a melt flow index of not less than 5g/10min at 200 ℃ under a 5kg load according to ISO 1133-2011.
The method for testing the weight average molecular weight is high-efficiency size exclusion chromatography.
The inventor researches that the fluidity of the polystyrene resin is better, so that the carrier resin and the silicone can be rapidly and uniformly separated in the matrix resin, meanwhile, the carrier resin with a specific melt flow index is easy to migrate in the polystyrene resin, and the silicone can be well migrated to the surface of the material in the processing process through the carrying effect of the carrier resin, so that the surface tension of the material is improved, and the surface hydrophobicity of the polystyrene composite material is obviously improved. The molecular weight of the silicone is large, and the molecular chain of the silicone is easy to be entangled with the matrix resin molecules, so that the silicone which migrates to the surface of the material is not easy to run off, and the polystyrene composite material can maintain long-term surface hydrophobicity in a high-temperature and high-humidity environment.
The inventor also researches and discovers that the addition of the compatilizer not only can weaken the influence of the carrier resin on the mechanical property of the material, but also can promote the combination between the carrier resin and the matrix resin which migrate to the surface of the material, and improve the hydrophobic stability of the composite material.
The inventor unexpectedly found in the research process that the addition of wax plays an external lubrication role in the polystyrene resin, and can effectively migrate from the polystyrene tree to the surface of the polystyrene tree; it has also been found that waxes can work in conjunction with other components (e.g., silicones, carriers, etc.) to even further increase the surface hydrophobicity and hydrophobic durability of polystyrene resins.
According to the invention, the polystyrene resin, the compatilizer, the carrier resin, the silicone and the wax are compounded, so that the surface hydrophobicity of the material can be obviously improved while the good mechanical property is maintained, and the polystyrene composite material is suitable for preparing various hydrophobic self-cleaning products.
In the invention, the weight percentage of the polystyrene resin in the polystyrene composite material is not less than 82 percent.
As a preferred embodiment of the present invention, the wax includes at least one of polyethylene wax, paraffin wax, and montan ester wax.
As a preferred embodiment of the present invention, the silicone has a weight average molecular weight of 100 to 150 ten thousand. The invention prefers high molecular weight silicone, which is more beneficial for silicone to migrate to the surface of the material rapidly; the high molecular weight silicone and matrix resin have better molecular winding effect, can obviously improve the surface hydrophobicity of the composite material and improve the hydrophobic stability of the composite material.
As a preferred embodiment of the present invention, the polystyrene resin has a melt flow index of 13 to 16g/10min at 200℃under a load of 5kg according to ISO 1133-2011. The inventor finds that the polystyrene resin with certain fluidity can be selected to quickly and uniformly disperse the wax, the silicone and the carrier resin, and simultaneously is more favorable for quickly migrating the wax and the silicone to the surface of the material.
As a preferred embodiment of the present invention, the polyethylene resin has a melt flow index of 15 to 45g/10min, more preferably 17 to 42g/min, at 190℃under a load of 2.16kg according to ISO 1133-2011; the polypropylene resin has a melt flow index of 20-45g/10min, more preferably 22-41g/10min, at 230℃under a load of 2.16kg according to ISO 1133-2011.
The inventors have found that the melt flow index of the carrier resin is within the above preferred range, and that the viscosity difference between the carrier resin and the polystyrene resin is appropriate, so that migration of silicone to the surface of the material can be more effectively promoted, and further, the surface hydrophobicity of the material can be more effectively promoted.
As a preferred embodiment of the present invention, the compatibilizer includes at least one of a polyethylene grafted polystyrene copolymer and a polypropylene grafted polystyrene copolymer.
As a preferred embodiment of the present invention, the polystyrene composite comprises the following components in parts by weight:
90-100 parts of polystyrene resin, 3-4 parts of silicone, 3-4 parts of carrier resin, 2-3 parts of wax and 2-3 parts of compatilizer.
When the weight parts of the components are in the range, the polystyrene composite material can keep higher impact strength, and simultaneously has better surface hydrophobicity and better comprehensive performance.
As a preferred embodiment of the present invention, the polystyrene composite further comprises the following components in parts by weight: 1-5 parts of an additive, wherein the additive comprises at least one of an antioxidant, a lubricant, a weather-proof agent and a colorant.
Based on the actual application requirements, a person skilled in the art can properly introduce some additive components, such as an antioxidant for improving the ageing resistance of the material, a lubricant for improving the processing performance of the material, a colorant for imparting various colors to the material, and the like, without affecting the material performance. Antioxidants, lubricants, weathering agents and colorants commonly used in the art are suitable for use in the polystyrene composite formulation of the present invention.
In a second aspect, the present invention provides a method for preparing a polystyrene composite material according to the first aspect, comprising the steps of:
Mixing silicone and carrier resin, and performing melt extrusion granulation in a double-screw extruder to obtain hydrophobic master batches;
Mixing other components except silicone and carrier resin and the obtained hydrophobic master batch, and performing melt extrusion granulation in a double-screw extruder to obtain the polystyrene composite material.
In a third aspect, the present invention provides the use of a polystyrene composite according to the first aspect for the preparation of a hydrophobic self-cleaning article.
The hydrophobic self-cleaning product can be hydrophobic self-cleaning household appliance accessories, packaging materials and other products.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, through compounding of the polystyrene resin, the compatilizer, the carrier resin, the silicone and the wax, the surface hydrophobicity of the material can be obviously improved while the good mechanical property is maintained, the contact angle of the polystyrene composite material provided by the invention is more than 107 degrees, and the impact strength is more than 10KJ/m 2; after being placed in a damp and hot environment for 500 hours, the contact angle of the polystyrene composite material provided by the invention can still be maintained to be more than 106 degrees, and the surface hydrophobicity stability is good, so that the polystyrene composite material is suitable for preparing various hydrophobic self-cleaning products.
Detailed Description
The present invention will be further described with reference to specific examples and comparative examples for better illustrating the objects, technical solutions and advantages of the present invention, and the object of the present invention is to be understood in detail, not to limit the present invention. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present invention. The experimental reagents and instruments involved in the practice of the present invention are common reagents and instruments unless otherwise specified.
The source information and performance parameters of the components described in each of the examples and comparative examples are shown in Table 1 below.
TABLE 1
Examples 1 to 14 and comparative examples 1 to 10
The polystyrene composite material of the embodiment and the comparative example of the invention is prepared by the following steps:
s1, weighing the components according to the table 2-3;
s2, after mixing silicone and carrier resin, extruding and granulating by using an extruder combined by a strong shearing screw, wherein the screw speed of the extruder is 400-550rpm, and the temperature of each section of screw of the extruder is sequentially set as follows from a feed inlet to a machine head: the silicone master batch is obtained by the steps of 80-100 ℃ in the first area, 200-210 ℃ in the second area, 200-210 ℃ in the third area, 190-200 ℃ in the fourth area, 190-200 ℃ in the fifth area, 190-200 ℃ in the sixth area, 190-200 ℃ in the seventh area, 190-200 ℃ in the eighth area, 200-210 ℃ in the ninth area and 200-210 ℃ in the head area;
S3, putting the silicone master batch obtained in the step S2 and other components except silicone and carrier resin into a high-speed mixer for uniform mixing, and extruding and granulating by an extruder, wherein the screw speed of the extruder is 300-500rpm, and the screw temperature of each section of the extruder is sequentially set from a feed inlet to a machine head as follows: the polystyrene composite material is obtained by the steps of 80-100 ℃ in the first area, 200-210 ℃ in the second area, 200-210 ℃ in the third area, 190-200 ℃ in the fourth area, 190-200 ℃ in the fifth area, 190-200 ℃ in the sixth area, 190-200 ℃ in the seventh area, 190-200 ℃ in the eighth area, 200-210 ℃ in the ninth area and 200-210 ℃ in the machine head.
Example 15
The difference between the present example 1 and the example 1 is that the present example does not use silicone and carrier resin to prepare silicone master batch, but directly puts each component into a high-speed mixer to mix uniformly, and then extrudes and granulates through an extruder to obtain polystyrene composite material.
TABLE 2
TABLE 3 Table 3
Effect example 1
The composites obtained in the above examples and comparative examples were subjected to performance testing as follows:
(1) Contact angle: the material is injection molded into a small square plate before the test, and is protected by a film so as to prevent the surface from being polluted by dust and the like; contact angle was measured according to GB/T30693-2014 standard, test conditions: the conventional test, the measuring tool is a protractor;
(2) Wet heat contact angle: the material is injection molded into a small square plate before the test, and is protected by a film so as to prevent the surface from being polluted by dust and the like; placing the sample in a constant temperature and humidity box with 90% humidity at 60 ℃, placing for 500 hours, taking out, placing at 25 ℃ and adjusting for 24 hours, and testing the contact angle according to GB/T30693-2014 standard;
(3) Notched Izod impact Strength: the material is injected to form a sample with the size of 4mm multiplied by 10mm multiplied by 80mm before the test, and the pendulum energy is 2.75J and the temperature is normal according to the standard test of GB1843-1996 "Plastic cantilever impact test method"; in order to obtain higher toughness, the notch impact strength of the material should be more than or equal to 10KJ/m 2.
TABLE 4 Table 4
TABLE 5
The embodiment 1-15 shows that the contact angle of the polystyrene composite material prepared by the invention is more than 107 DEG, and the contact angle of the polystyrene composite material can still be maintained to be more than 106 DEG after the polystyrene composite material is placed in a damp-heat environment for 500 hours, and meanwhile, the polystyrene composite material prepared by the invention has higher impact strength, the impact strength is more than 10KJ/m 2, and the polystyrene composite material is suitable for preparing a hydrophobic self-cleaning product.
As can be seen from examples 1, 5-6 and comparative example 1, when the melt flow index of the polystyrene resin is not less than 5g/10min, preferably 13-16g/10min, the fluidity of the polystyrene resin is high, so that the silicone and the carrier resin can be rapidly dispersed in the polystyrene resin, and meanwhile, the viscosity difference between the polystyrene resin and the carrier resin is proper, thereby being more favorable for the silicone to rapidly migrate to the surface of the material and having better hydrophobicizing effect on the material. The polystyrene resin used in comparative example 1 was poor in fluidity, silicone was difficult to migrate to the surface of the material effectively, the effect of improving the hydrophobicity of the composite material was poor, and at the same time, the silicone was unevenly distributed in the composite material, resulting in a decrease in impact strength of the composite material.
As can be seen from examples 1, 7-8 and comparative example 2, when the molecular weight of the silicone is not less than 50 ten thousand, the viscosity difference between the hydrophobic masterbatch and the polystyrene resin is larger, so that the migration of the silicone to the surface of the material is facilitated, and the molecular chains of the silicone migrated to the surface of the material are entangled with the molecular chains of the polystyrene resin to form a larger coarse structure, so that the silicone is not easy to lose, thereby not only greatly improving the surface hydrophobicity of the material, but also greatly improving the hydrophobic weather resistance of the material. The silicone of comparative example 2 has too low a molecular weight, the surface hydrophobicity of the composite material is poor, silicone migrating to the surface of the material is easily lost, and the hydrophobic weather resistance of the composite material is remarkably deteriorated.
As can be seen from examples 1, 9-11 and comparative examples 3-4, the carrier resins used in examples 1 and 9-11 have proper melt flow indexes, and the carrier resin and the silicone form hydrophobic master batch and polystyrene resin with larger viscosity difference, so that the hydrophobic master batch can quickly migrate to the surface of the material, and the hydrophobic modification effect on the material is better; the carrier resins used in comparative examples 3 to 4 were unsuitable in melt flow index, so that the compatibility of the hydrophobic master batch with the matrix resin was good, and further, the hydrophobic master batch was difficult to migrate to the surface of the material, thereby deteriorating the surface hydrophobicity of the composite material.
It can be seen from examples 1, 14 and 5 that the PP grafted PS or PE grafted PS is used as a compatibilizer, so that not only can the influence of the carrier resin on the mechanical properties of the material be weakened, but also the combination between the carrier resin and the matrix resin migrating to the surface of the material can be promoted, and the hydrophobic stability of the composite material can be improved.
The addition of too much compatibilizer in comparative example 6 compared to example 1 reduces the impact strength of the material and also makes it difficult for wax and silicone to migrate to the surface of the material, resulting in a decrease in the surface hydrophobicity of the material.
As can be seen from example 1 and comparative examples 7-8, comparative example 7 adds too much silicone, which adversely affects the mechanical properties of the composite; comparative example 8 has too little silicone added and the surface hydrophobicity of the material is poor.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (9)
1. The polystyrene composite material is characterized by comprising the following components in parts by weight:
80-120 parts of polystyrene resin, 2-6 parts of silicone, 2-6 parts of carrier resin, 1-4 parts of wax and 1-5 parts of compatilizer;
the weight average molecular weight of the silicone is not less than 50 ten thousand, and the carrier resin comprises at least one of polyethylene resin and polypropylene resin; the melt flow index of the polyethylene resin at 190 ℃ under the load of 2.16kg is not less than 15g/10min, and the melt flow index of the polypropylene resin at 230 ℃ under the load of 2.16kg is not less than 20g/10min;
The melt flow index of the polystyrene resin is not less than 5g/10min at 200 ℃ under a load of 5 kg.
2. The polystyrene composite of claim 1, wherein the wax comprises at least one of a polyethylene wax, a paraffin wax, and a montan wax.
3. The polystyrene composite of claim 1, wherein the silicone has a weight average molecular weight of 100 to 150 ten thousand.
4. The polystyrene composite of claim 1, wherein the polystyrene resin has a melt flow index of 13 to 16g/10min at 200 ℃ under a 5kg load.
5. The polystyrene composite of claim 1, wherein the compatibilizer comprises at least one of a polyethylene grafted polystyrene copolymer and a polypropylene grafted polystyrene copolymer.
6. The polystyrene composite of claim 1, comprising the following components in parts by weight:
90-100 parts of polystyrene resin, 3-4 parts of silicone, 3-4 parts of carrier resin, 2-3 parts of wax and 2-3 parts of compatilizer.
7. The polystyrene composite of claim 1, further comprising the following components in parts by weight: 1-5 parts of an additive, wherein the additive comprises at least one of an antioxidant, a lubricant, a weather-proof agent and a colorant.
8. A method for preparing the polystyrene composite according to any one of claims 1 to 7, comprising the steps of:
Mixing silicone and carrier resin, and performing melt extrusion granulation in a double-screw extruder to obtain hydrophobic master batches;
Mixing other components except silicone and carrier resin and the obtained hydrophobic master batch, and performing melt extrusion granulation in a double-screw extruder to obtain the polystyrene composite material.
9. Use of a polystyrene composite according to any one of claims 1 to 7 for the preparation of a hydrophobic self-cleaning article.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118325246A true CN118325246A (en) | 2024-07-12 |
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