CN116082853B - Liquid crystal polymer composite material applied to lens module and preventing dust and preparation method thereof - Google Patents
Liquid crystal polymer composite material applied to lens module and preventing dust and preparation method thereof Download PDFInfo
- Publication number
- CN116082853B CN116082853B CN202211442939.4A CN202211442939A CN116082853B CN 116082853 B CN116082853 B CN 116082853B CN 202211442939 A CN202211442939 A CN 202211442939A CN 116082853 B CN116082853 B CN 116082853B
- Authority
- CN
- China
- Prior art keywords
- parts
- liquid crystal
- composite material
- crystal polymer
- polymer composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 71
- 229920000106 Liquid crystal polymer Polymers 0.000 title claims abstract description 60
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 title claims abstract description 60
- 239000000428 dust Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims description 17
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical class N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 38
- -1 polyethylene Polymers 0.000 claims abstract description 36
- 229920000642 polymer Polymers 0.000 claims abstract description 25
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 22
- 239000004698 Polyethylene Substances 0.000 claims abstract description 21
- 229920000573 polyethylene Polymers 0.000 claims abstract description 21
- 239000010445 mica Substances 0.000 claims abstract description 14
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- OQLRBFNNEQUJPK-UHFFFAOYSA-N (3,5-ditert-butyl-4-hydroxyphenyl)methyl diethyl phosphate Chemical compound CCOP(=O)(OCC)OCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 OQLRBFNNEQUJPK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920001897 terpolymer Polymers 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 33
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 229910052582 BN Inorganic materials 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000012046 mixed solvent Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- YHRUOJUYPBUZOS-UHFFFAOYSA-N 1,3-dichloropropane Chemical compound ClCCCCl YHRUOJUYPBUZOS-UHFFFAOYSA-N 0.000 claims description 3
- DCQBZYNUSLHVJC-UHFFFAOYSA-N 3-triethoxysilylpropane-1-thiol Chemical compound CCO[Si](OCC)(OCC)CCCS DCQBZYNUSLHVJC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- CNHDIAIOKMXOLK-UHFFFAOYSA-N toluquinol Chemical compound CC1=CC(O)=CC=C1O CNHDIAIOKMXOLK-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002086 nanomaterial Substances 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 2
- 239000004677 Nylon Substances 0.000 abstract 1
- 229920001778 nylon Polymers 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 17
- 238000001000 micrograph Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- LIGACIXOYTUXAW-UHFFFAOYSA-N phenacyl bromide Chemical compound BrCC(=O)C1=CC=CC=C1 LIGACIXOYTUXAW-UHFFFAOYSA-N 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002135 nanosheet Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/12—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a liquid crystal polymer composite material for preventing dust of a lens module, which comprises the following components: 100-120 parts of liquid crystal high polymer, 30-40 parts of superfine nano mica powder, 15-30 parts of modified boron nitride micro flakes, 15-20 parts of polyethylene wax, 10-15 parts of ethylene-acrylic ester-glycidyl methacrylate terpolymer, 3-8 parts of poly pentabromophenol acrylic ester and 1-5 parts of 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate. The polyethylene wax is added into the composite material to make the composite material have good hydrophobicity. Modified boron nitride micro-sheets are added into the composite material, and the surface of the nylon composite material is provided with a rough surface with a micro-nano structure through melt extrusion. Finally, the liquid crystal polymer composite material with excellent dust prevention effect is obtained; the lens module can be widely applied to lens modules and electronic digital products.
Description
Technical Field
The invention belongs to the field of polymer composite materials, and particularly relates to a liquid crystal polymer composite material applied to dust prevention of a lens module and a preparation method thereof.
Background
Liquid crystal high molecular polymer is a new type of high performance engineering plastic used widely in modern times, and has excellent tensile strength, tensile modulus and heat resistance. When the liquid crystal high molecular polymer is applied to engineering plastics, the liquid crystal high molecular polymer is filled and modified mainly by adding fillers, reinforcing components and other functional additives so as to achieve a product with specific properties. The method is widely applied to digital products such as electronic appliances, automobile industry, aerospace, personal PC, cameras and the like. According to the application scene, the specific structure of the liquid crystal high molecular polymer and the property of imparting the biasing property to the liquid crystal high molecular polymer by adding the composite material are important and directional of the current research.
Chinese patent CN110982297a discloses a 5G low dielectric strength LCP composite material and preparation method thereof, which relates to the technical field of plastic material preparation and production, the 5G low dielectric strength LCP composite material comprises the following components in parts by weight: 650-700 parts of LCP resin, 80-120 parts of glass fiber, 50-100 parts of sericite, 50-100 parts of glass bead and 2-5 parts of antioxidant. The preparation method comprises the following steps: s1, mixing main materials, S2, extruding a brace, S3, cooling and granulating. The dielectric constant and dielectric loss of the 5G low dielectric strength LCP composite material prepared by the invention are lower, so that the signal transmission speed is higher.
Chinese patent CN106883636A discloses a basalt reinforced LCP composite material and a preparation process thereof, wherein the basalt reinforced LCP composite material comprises, by weight, 40-80 parts of LCP, 12-30 parts of basalt fiber, 0.3-0.9 part of heat-resistant agent, 3-9 parts of coupling agent, 3-6 parts of main antioxidant, 1-3 parts of auxiliary antioxidant, 1-5 parts of compatilizer, 0.5-2 parts of lubricant, 2-6 parts of flame retardant and 1-3 parts of flame retardant synergist; the heat resistant agent is N, N '-4,4' -diphenyl methane bis Ma Laitai imine. The basalt reinforced LCP composite material has high mechanical strength, good heat resistance and wide application range.
The research is mainly carried out on the aspects of electric property, mechanical property and the like of the liquid crystal polymer composite material, and certain progress is also made. As also mentioned previously, different application scenarios require performance enhancements in a particular aspect. In the prior art, the dust-proof performance of the composite material is rarely studied, however, the material is always influenced by dust in an open environment, and particularly, the accumulation of dust is always aggravated by the electrostatic effect generated by an electronic device product under the condition of electrification; but also accumulate more easily on the internal parts of the product and are difficult to clean.
According to different application requirements, the design of the dust-proof liquid crystal polymer composite material and the preparation method thereof are very significant.
Disclosure of Invention
In order to solve the problems of the prior art, the invention aims to provide a liquid crystal polymer composite material for preventing dust applied to a lens module and a preparation method thereof, which can effectively prevent dust and/or dust accumulation, and the composite material can still have excellent mechanical properties.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the liquid crystal polymer composite material for preventing dust of the lens module comprises the following components in parts by weight:
100-120 parts of liquid crystal high polymer,
30-40 parts of superfine nano mica powder,
15-30 parts of modified boron nitride micro-sheet,
15-20 parts of polyethylene wax,
10 to 15 parts of ethylene-acrylic ester-glycidyl methacrylate terpolymer,
3-8 parts of poly pentabromophenol acrylic acid ester,
1-5 parts of 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate.
Further, the liquid crystal high molecular polymer is prepared by the following steps:
(1) 60L of 1, 3-dichloropropane is poured into a reactor, and 10mol of o-methyl hydroquinone is added; cooling to-5deg.C in water bath, and stirring; then 25mol of diethanolamine is added and stirring is continued;
(2) Argon is introduced into the reactor as a shielding gas at the temperature of-5 ℃ in the reactor, 10mol of 4,4' -dicarboxylic acid diphenyl ether is added into the reactor, and the stirring rate is improved for 30min; raising the temperature to 30 ℃ and continuing stirring and reacting for 3 hours;
(3) Pouring the reaction product into isopropanol, filtering, washing and drying to obtain the liquid crystal high polymer.
Further, the preparation method of the modified boron nitride micro-sheet comprises the following steps: (1) Adding 10-20 parts of 3-mercaptopropyl triethoxysilane into 100 parts of ethanol and deionized mixed solvent, uniformly stirring, adding 30-50 parts of boron nitride micro-sheets, and dispersing for 20-30 min by adopting ultrasonic waves; (1) Introducing inert protective atmosphere, heating the solution to 80-90 ℃, and reacting for 30-60 min at a constant temperature; and (3) filtering, washing with deionized water and drying.
Further, the liquid crystal polymer composite material comprises the following components in parts by weight:
105-115 parts of liquid crystal polymer,
33-36 parts of superfine nano mica powder,
20 to 25 parts of modified boron nitride micro-sheet,
16 to 19 parts of polyethylene wax,
12-13 parts of ethylene-acrylic ester-glycidyl methacrylate terpolymer,
4-6 parts of poly pentabromophenol acrylic acid ester,
2-4 parts of 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate.
Further, the thickness of the boron nitride micro-sheet is 0.1-0.5 μm, and the width-thickness ratio is 50-80.
Further, the volume ratio of the ethanol to the deionized water in the ethanol and deionized mixed solvent is 1:1.
The invention also provides a preparation method of the liquid crystal polymer composite material applied to the lens module for preventing dust, which comprises the following steps:
(1) Pouring the liquid crystal high molecular polymer, the superfine nano mica powder, the modified boron nitride micro flakes and the polyethylene wax into stirring equipment according to parts by weight, and stirring for 5-10 min at the rotating speed of 90-100 r/min to obtain a material group A;
(2) According to the weight portion, the residual materials ethylene-acrylic ester-glycidyl methacrylate ternary polymerization, poly pentabromophenol acrylic ester and 3, 5-di-tert-butyl-4-hydroxy benzyl diethyl phosphate are poured into stirring equipment and stirred for 3 to 5 minutes at the rotating speed of 90 to 100r/min, so as to obtain a material group B;
(3) Feeding the material group A from the main feed of the double-screw extruder, feeding the material group B from the side feed of the double-screw extruder, and melting, mixing, extruding and granulating the material group A by the double-screw extruder; obtaining the liquid crystal polymer composite material.
Further, the aspect ratio of the twin-screw extruder is (45-50): 1. the screw rotating speed is controlled to be 300-400 r/min.
Further, the set temperature of the twin-screw extruder is: a section of: 305-325 ℃, two stages: 310-330 ℃, three sections: 315-335 ℃, four sections: 320-340 ℃ and five sections: 325-345 ℃, six sections: 300-320 ℃ and seven sections: 300-320 ℃ and eight sections: 305-325 ℃, nine sections: 310-330 ℃, and a machine head: 320-340 ℃.
Compared with the prior art, the application has the following technical effects: (1) In the application, the melting point of the polyethylene wax is between 94 and 96 ℃, and the polyethylene wax has good low temperature resistance and chemical resistance; can be compatible with polymeric polymer materials and can be well blended with other polymers to form composite materials; and due to the waxy nature, the hydrophobicity of the composite material can be improved to a certain extent.
(2) In the application, the boron nitride micro-sheet is added into a composite material, so that the two-dimensional structural material has good electrical insulation, thermal stability and mechanical property and excellent thermal conductivity. Therefore, the above-mentioned properties of the liquid crystal polymer composite can be effectively improved to some extent. However, the compatibility of the boron nitride and the liquid crystal polymer matrix in the blending and melting process is poor, which is not beneficial to the improvement of the performance. According to the preparation method, the surface of the boron nitride nanometer micron is modified, and active groups are introduced into the surface of the boron nitride, so that the distribution uniformity of the boron nitride nanometer micron in a composite material can be improved, and the cohesiveness and compatibility between inorganic-high polymer interfaces can be improved. On the other hand, the micron-sized boron nitride sheet is added into the liquid crystal polymer composite material, and the liquid crystal polymer composite material is subjected to melt extrusion and combined action with the superfine nano mica powder filler in the material to enable the surface of the liquid crystal polymer composite material to have a rough surface with a micro-nano structure, so that the contact angle of dust on the surface can be improved, the dust separation effect is realized, and the effective dust prevention effect is achieved.
Drawings
Fig. 1 is a scanning electron microscope image of the liquid crystal polymer composite material prepared in example 1.
FIG. 2 is a scanning electron microscope image of the liquid crystal polymer composite material prepared in comparative example 1.
FIG. 3 is a scanning electron microscope image of the liquid crystal polymer composite material prepared in comparative example 2.
FIG. 4 is a scanning electron microscope image of the liquid crystal polymer composite material prepared in comparative example 3.
Detailed Description
In order to make the technical scheme and advantages of the invention clearer, the technical scheme in the embodiment of the invention is clearly and completely described. The described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
First, a liquid crystal polymer and a modified boron nitride micro-plate were prepared as raw materials for the following examples and comparative examples.
The liquid crystal high molecular polymer is prepared by the following steps:
(1) 60L of 1, 3-dichloropropane is poured into a reactor, and 10mol of o-methyl hydroquinone is added; cooling to-5deg.C in water bath, and stirring; then 25mol of diethanolamine is added and stirring is continued;
(2) Argon is introduced into the reactor as a shielding gas at the temperature of-5 ℃ in the reactor, 10mol of 4,4' -dicarboxylic acid diphenyl ether is added into the reactor, and the stirring rate is improved for 30min; raising the temperature to 30 ℃ and continuing stirring and reacting for 3 hours;
(3) Pouring the reaction product into isopropanol, filtering, washing and drying to obtain the liquid crystal high polymer.
The preparation method of the modified boron nitride micro-sheet comprises the following steps: (1) 15 parts of 3-mercaptopropyl triethoxysilane is added into 100 parts of ethanol and deionized mixed solvent, 40 parts of boron nitride micron sheets are added after uniform stirring, and then ultrasonic dispersion is carried out for 25min; (1) Introducing inert protective atmosphere, heating the solution to 85 ℃, and reacting for 40min at a constant temperature; and (3) filtering, washing with deionized water and drying.
Wherein, the thickness of the boron nitride micron sheet is 0.3 μm, and the width-thickness ratio is 60.
Further, the volume ratio of the ethanol to the deionized water in the ethanol and deionized mixed solvent is 1:1.
Example 2
The liquid crystal polymer composite material for preventing dust of the lens module comprises the following components in parts by weight:
100 parts of liquid crystal high polymer,
30 parts of superfine nano mica powder,
15 parts of modified boron nitride micro-sheet,
15 parts of polyethylene wax,
10 parts of ethylene-acrylic ester-glycidyl methacrylate terpolymer,
3 parts of poly pentabromophenol acrylic acid ester,
1 part of diethyl 3, 5-di-tert-butyl-4-hydroxybenzyl phosphate.
The preparation method of the liquid crystal polymer composite material comprises the following steps:
(1) Pouring the liquid crystal high molecular polymer, the superfine nano mica powder, the modified boron nitride micro flakes and the polyethylene wax into stirring equipment according to parts by weight, and stirring for 5min at the rotating speed of 90r/min to obtain a material group A;
(2) According to parts by weight, pouring the rest materials ethylene-acrylic ester-glycidyl methacrylate ternary polymerization, poly pentabromophenol acrylic ester and 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate into stirring equipment, and stirring for 3min at the rotating speed of 90r/min to obtain a material group B;
(3) Feeding the material group A from the main feed of the double-screw extruder, feeding the material group B from the side feed of the double-screw extruder, and melting, mixing, extruding and granulating the material group A by the double-screw extruder; obtaining the liquid crystal polymer composite material.
Wherein, the length-diameter ratio of the double screw extruder is 45: 1. the screw speed control was set at 300r/min. The set temperature of the double-screw extruder is as follows: a section of: 305 ℃, two stages: 310 ℃, three sections: 315 ℃, four sections: 320 ℃ and five sections: 325 ℃, six sections: 300 ℃, seven sections: 300 ℃, eight sections: 305 ℃, nine sections: 310 ℃, machine head: 320 ℃.
Example 3
The liquid crystal polymer composite material for preventing dust of the lens module comprises the following components in parts by weight:
120 parts of liquid crystal high polymer,
40 parts of superfine nano mica powder,
30 parts of modified boron nitride micro-sheet,
20 parts of polyethylene wax,
15 parts of ethylene-acrylic ester-glycidyl methacrylate terpolymer,
8 parts of poly pentabromophenol acrylic acid ester,
5 parts of diethyl 3, 5-di-tert-butyl-4-hydroxybenzyl phosphate.
The preparation method of the liquid crystal polymer composite material comprises the following steps:
(1) Pouring the liquid crystal high molecular polymer, the superfine nano mica powder, the modified boron nitride micro flakes and the polyethylene wax into stirring equipment according to parts by weight, and stirring for 10min at the rotating speed of 100r/min to obtain a material group A;
(2) According to parts by weight, pouring the rest materials ethylene-acrylic ester-glycidyl methacrylate ternary polymerization, poly pentabromophenol acrylic ester and 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate into stirring equipment, and stirring for 5min at a rotating speed of 100r/min to obtain a material group B;
(3) Feeding the material group A from the main feed of the double-screw extruder, feeding the material group B from the side feed of the double-screw extruder, and melting, mixing, extruding and granulating the material group A by the double-screw extruder; obtaining the liquid crystal polymer composite material.
Wherein, the length-diameter ratio of the double screw extruder is 45: 1. the screw speed control was set at 300r/min. The set temperature of the double-screw extruder is as follows: a section of: 325 ℃, two sections: 330 ℃, three sections: 335 ℃, four sections: 340 ℃ and five sections: 345 ℃ and six sections: 320 ℃ and seven sections: 320 ℃, eight sections: 325 ℃, nine sections: 330 ℃, machine head: 340 ℃.
Example 4
The liquid crystal polymer composite material for preventing dust of the lens module comprises the following components in parts by weight:
110 parts of liquid crystal high polymer,
35 parts of superfine nano mica powder,
23 parts of modified boron nitride micro-sheet,
18 parts of polyethylene wax,
13 parts of ethylene-acrylic ester-glycidyl methacrylate terpolymer,
5 parts of poly pentabromophenol acrylic acid ester,
3 parts of 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate.
The preparation method of the liquid crystal polymer composite material comprises the following steps:
(1) Pouring the liquid crystal high molecular polymer, the superfine nano mica powder, the modified boron nitride micro flakes and the polyethylene wax into stirring equipment according to parts by weight, and stirring for 10min at the rotating speed of 100r/min to obtain a material group A;
(2) According to parts by weight, pouring the rest materials ethylene-acrylic ester-glycidyl methacrylate ternary polymerization, poly pentabromophenol acrylic ester and 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate into stirring equipment, and stirring for 5min at a rotating speed of 100r/min to obtain a material group B;
(3) Feeding the material group A from the main feed of the double-screw extruder, feeding the material group B from the side feed of the double-screw extruder, and melting, mixing, extruding and granulating the material group A by the double-screw extruder; obtaining the liquid crystal polymer composite material.
Wherein, the length-diameter ratio of the double screw extruder is 45: 1. the screw speed control was set at 300r/min. The set temperature of the double-screw extruder is as follows: a section of: 315 ℃, two sections: 320 ℃, three sections: 325 ℃, four sections: 330 ℃, five sections: 335 ℃, six sections: 310 ℃, seven segments: 310 ℃, eight sections: 315 ℃, nine sections: 320 ℃, machine head: 330 ℃.
Comparative example 1
Comparative example 1 substantially corresponds to the protocol of example 4, except that comparative example 1 does not contain polyethylene wax.
Comparative example 2
Comparative example 2 was substantially identical to the protocol of example 4, except that comparative example 2 did not employ modified boron nitride microplates.
Comparative example 3
Comparative example 3 is substantially identical to the protocol of example 4, except that comparative example 3 does not employ modified boron nitride microplates, but rather only boron nitride microplates.
The liquid crystal polymer composite materials obtained in examples 2-4 and comparative examples 2-4 were placed in a rectangular mold (20×10×3 cm), heated to 330 ℃, melted and spread; and cooling and demolding to obtain the liquid crystal polymer composite material plate.
(1) The plates of example 4 and comparative examples 1 to 3 were surface-observed by a scanning electron microscope (5.0 kV).
(2) And measuring the contact angle of the liquid crystal polymer composite material plate to water and dust particles and the surface roughness.
(3) Placing the liquid crystal polymer composite material plates outdoors for 24 hours, and then blowing each plate by adopting 3m/s simulated wind; the dust on the surfaces of the respective plates was then collected with a soft brush, respectively, and the weight of the dust was measured.
As can be seen from the scanning electron microscope, the surfaces of the liquid crystal polymer composite plates prepared in the embodiment 4 and the comparative example 3 have micro-nano structures, and the nano sheet structures can be intuitively seen from the figure 1; the surface micro-nano structure effectively reduces the surface contact area between the dust particles and the composite material plate, reduces the adhesion force, and can improve the contact angle between the dust particles and the surface of the composite material plate, so that the dust particles are easier to fall off, and the dustproof performance of the liquid crystal polymer composite material is obviously improved.
And from the above data the following conclusions can be drawn:
(1) In comparative example 1, in which no polyethylene wax was added, the surface roughness of the liquid crystal polymer composite plate was slightly different from that of example 4, indicating that the influence factor of polyethylene wax on the roughness was weak. However, the water contact angle and the dust contact angle are remarkably reduced; it follows that the addition of polyethylene wax is beneficial to the improvement of the hydrophobicity and dust resistance of the composite material.
(2) When the modified boron nitride micro-sheet is added, the surface roughness of the prepared liquid crystal polymer composite material is higher than that of the liquid crystal polymer composite material without the modified boron nitride micro-sheet; and the water contact angle and the dust contact angle are far higher than those of the non-modified boron nitride micro-chips. In contrast, the addition of modified boron nitride microplates had a greater effect on the composite than the polyethylene wax. It can be seen that the addition of the modified boron nitride micro-plate has the most critical effect on the dust-proof performance of the composite material.
(3) From the data of the dust contact angle and the dust quality, the liquid crystal polymer composite material prepared by the invention has excellent dustproof performance.
While particular embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and concepts of the present invention.
Claims (7)
1. The liquid crystal polymer composite material for preventing dust of the lens module is characterized by comprising the following components in parts by weight:
100-120 parts of liquid crystal high polymer,
30-40 parts of superfine nano mica powder,
15-30 parts of modified boron nitride micro-sheet,
15-20 parts of polyethylene wax,
10 to 15 parts of ethylene-acrylic ester-glycidyl methacrylate terpolymer,
3-8 parts of poly pentabromophenol acrylic acid ester,
1-5 parts of 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate;
the liquid crystal high molecular polymer is prepared by the following steps:
(1) 60L of 1, 3-dichloropropane is poured into a reactor, and 10mol of o-methyl hydroquinone is added; cooling to-5deg.C in water bath, and stirring; then 25mol of diethanolamine is added and stirring is continued;
(2) Argon is introduced into the reactor as a shielding gas at the temperature of-5 ℃ in the reactor, 10mol of 4,4' -dicarboxylic acid diphenyl ether is added into the reactor, and the stirring rate is improved for 30min; raising the temperature to 30 ℃ and continuing stirring and reacting for 3 hours;
(3) Pouring the reaction product into isopropanol, filtering, washing and drying to obtain a liquid crystal high polymer;
the preparation method of the modified boron nitride micro-sheet comprises the following steps: (1) Adding 10-20 parts of 3-mercaptopropyl triethoxysilane into 100 parts of ethanol and deionized mixed solvent, uniformly stirring, adding 30-50 parts of boron nitride micro-sheets, and dispersing for 20-30 min by adopting ultrasonic waves; (2) Introducing inert protective atmosphere, heating the solution to 80-90 ℃, and reacting for 30-60 min at a constant temperature; and (3) filtering, washing with deionized water and drying.
2. The liquid crystal polymer composite material for preventing dust of a lens module according to claim 1, wherein the liquid crystal polymer composite material comprises the following components in parts by weight:
105-115 parts of liquid crystal polymer,
33-36 parts of superfine nano mica powder,
20 to 25 parts of modified boron nitride micro-sheet,
16 to 19 parts of polyethylene wax,
12-13 parts of ethylene-acrylic ester-glycidyl methacrylate terpolymer, 4-6 parts of poly pentabromophenol acrylic ester,
2-4 parts of 3, 5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate.
3. The liquid crystal polymer composite material for preventing dust of a lens module according to claim 1, wherein the thickness of the boron nitride micron sheet is 0.1-0.5 μm, and the width-thickness ratio is 50-80.
4. The liquid crystal polymer composite material for preventing dust of a lens module according to claim 1, wherein the volume ratio of the ethanol to the deionized water in the ethanol and deionized mixed solvent is 1:1.
5. A method for preparing the liquid crystal polymer composite material for preventing dust of a lens module according to any one of claims 1 to 4, comprising the following steps:
(1) Pouring the liquid crystal high molecular polymer, the superfine nano mica powder, the modified boron nitride micro flakes and the polyethylene wax into stirring equipment according to parts by weight, and stirring for 5-10 min at the rotating speed of 90-100 r/min to obtain a material group A;
(2) According to the weight portion, the residual materials ethylene-acrylic ester-glycidyl methacrylate ternary polymerization, poly pentabromophenol acrylic ester and 3, 5-di-tert-butyl-4-hydroxy benzyl diethyl phosphate are poured into stirring equipment and stirred for 3 to 5 minutes at the rotating speed of 90 to 100r/min, so as to obtain a material group B;
(3) Feeding the material group A from the main feed of the double-screw extruder, feeding the material group B from the side feed of the double-screw extruder, and melting, mixing, extruding and granulating the material group A by the double-screw extruder; obtaining the liquid crystal polymer composite material.
6. The method for preparing the anti-dust liquid crystal polymer composite material applied to the lens module according to claim 5, wherein the length-diameter ratio of the double screw extruder is (45-50): 1. the screw rotating speed is controlled to be 300-400 r/min.
7. The method for preparing the anti-dust liquid crystal polymer composite material applied to the lens module according to claim 5, wherein the set temperature of the twin-screw extruder is as follows: a section of: 305-325 ℃, two stages: 310-330 ℃, three sections: 315-335 ℃, four sections: 320-340 ℃ and five sections: 325-345 ℃, six sections: 300-320 ℃ and seven sections: 300-320 ℃ and eight sections: 305-325 ℃, nine sections: 310-330 ℃, and a machine head: 320-340 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211442939.4A CN116082853B (en) | 2022-11-17 | 2022-11-17 | Liquid crystal polymer composite material applied to lens module and preventing dust and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211442939.4A CN116082853B (en) | 2022-11-17 | 2022-11-17 | Liquid crystal polymer composite material applied to lens module and preventing dust and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116082853A CN116082853A (en) | 2023-05-09 |
| CN116082853B true CN116082853B (en) | 2024-03-01 |
Family
ID=86201414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211442939.4A Active CN116082853B (en) | 2022-11-17 | 2022-11-17 | Liquid crystal polymer composite material applied to lens module and preventing dust and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116082853B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008291243A (en) * | 2007-04-24 | 2008-12-04 | Mitsubishi Chemicals Corp | Thermoplastic resin including furan structure |
| CN109943055A (en) * | 2019-01-28 | 2019-06-28 | 广东国立科技股份有限公司 | Low creep flame-proof glass fibre enhancing PPO/LCP composite alloy material of a kind of high-temperature resistant high rigidity and preparation method thereof |
| CN111995843A (en) * | 2020-08-24 | 2020-11-27 | 广东圆融新材料有限公司 | Low-linear expansion coefficient polybutylene terephthalate composite material and preparation method thereof |
| CN112011156A (en) * | 2020-08-25 | 2020-12-01 | 广东圆融新材料有限公司 | Polyethylene terephthalate composite material and preparation method thereof |
| CN114031900A (en) * | 2021-12-15 | 2022-02-11 | 广东格瑞新材料股份有限公司 | Low dielectric strength composite material for communication and preparation method thereof |
| CN114410081A (en) * | 2022-03-12 | 2022-04-29 | 河源市万利科技有限公司 | High-strength PET (polyethylene terephthalate) glue box material and preparation process thereof |
-
2022
- 2022-11-17 CN CN202211442939.4A patent/CN116082853B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008291243A (en) * | 2007-04-24 | 2008-12-04 | Mitsubishi Chemicals Corp | Thermoplastic resin including furan structure |
| CN109943055A (en) * | 2019-01-28 | 2019-06-28 | 广东国立科技股份有限公司 | Low creep flame-proof glass fibre enhancing PPO/LCP composite alloy material of a kind of high-temperature resistant high rigidity and preparation method thereof |
| CN111995843A (en) * | 2020-08-24 | 2020-11-27 | 广东圆融新材料有限公司 | Low-linear expansion coefficient polybutylene terephthalate composite material and preparation method thereof |
| CN112011156A (en) * | 2020-08-25 | 2020-12-01 | 广东圆融新材料有限公司 | Polyethylene terephthalate composite material and preparation method thereof |
| CN114031900A (en) * | 2021-12-15 | 2022-02-11 | 广东格瑞新材料股份有限公司 | Low dielectric strength composite material for communication and preparation method thereof |
| CN114410081A (en) * | 2022-03-12 | 2022-04-29 | 河源市万利科技有限公司 | High-strength PET (polyethylene terephthalate) glue box material and preparation process thereof |
Non-Patent Citations (1)
| Title |
|---|
| "高导热环氧树脂基复合绝缘材料及其在金属基覆铜板中的应用";田付强1;《绝缘材料》;第53卷;第1-8页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116082853A (en) | 2023-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1296500C (en) | Process for producing mouldable polymer blends from electrically conductive organic polymers and/or organic conductors, apparatus for performing the process and the use of the polymer blends | |
| WO2013066003A1 (en) | Wholly aromatic liquid crystal polyester resin compound and product having antistatic properties | |
| WO2012115344A1 (en) | Electrically conductive polymer/filler composite, and method for preparing same | |
| CN112126243B (en) | Liquid crystal polymer composition | |
| CN104151805A (en) | Carbon fiber reinforced thermoplastic resin composite material with superior heat dissipation performance and preparation method | |
| CN110256815B (en) | Toughened conductive epoxy resin composite material and preparation method thereof | |
| CN115926292A (en) | Heat-conducting filler master batch, polypropylene composite material for extrusion and plastic uptake, and preparation method and application thereof | |
| CN116082853B (en) | Liquid crystal polymer composite material applied to lens module and preventing dust and preparation method thereof | |
| CN112266592B (en) | High-conductivity nano-mineral modified fully-degradable polymer composite material and preparation method thereof | |
| CN111393823B (en) | Gn-PET/PC alloy with excellent mechanical property and preparation method thereof | |
| CN116875027A (en) | Dielectric flame-retardant composite material and preparation method thereof | |
| CN112143194A (en) | Modified regenerated PC/ABS alloy reclaimed material and preparation method thereof | |
| CN109467814B (en) | Composite mineral fiber filled polypropylene composite material and preparation method thereof | |
| CN115785660B (en) | High-temperature-resistant nylon composite material applied to dust prevention of lens module and preparation method thereof | |
| CN110724340B (en) | Permanent antistatic polypropylene composite material and preparation method thereof | |
| CN111234521A (en) | High-gloss mirror glass fiber reinforced PA66 composite material and preparation method thereof | |
| CN112898700A (en) | Heat-resistant environment-friendly cable insulation material and preparation method thereof | |
| CN115678228B (en) | Antistatic liquid crystal resin composition and film product thereof | |
| CN112980083A (en) | Preparation method and preparation device of graphene antibacterial reinforced plastic | |
| CN112574537A (en) | Black light-shielding master batch, black light-shielding polyester film and preparation method | |
| CN114891320B (en) | Epoxy resin/chopped glass fiber composite material and preparation method thereof | |
| CN111454500B (en) | 3D conductive network structure polymer antistatic material, preparation method thereof and application of ultralow molecular weight polyethylene | |
| CN115058155B (en) | Antistatic polypropylene coating material and preparation method thereof | |
| CN115073890B (en) | PBAT composite material and preparation method thereof | |
| CN116199975B (en) | Polypropylene modified material and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |