CN116622207B - Protective film for screen and preparation method thereof - Google Patents

Protective film for screen and preparation method thereof Download PDF

Info

Publication number
CN116622207B
CN116622207B CN202310608305.XA CN202310608305A CN116622207B CN 116622207 B CN116622207 B CN 116622207B CN 202310608305 A CN202310608305 A CN 202310608305A CN 116622207 B CN116622207 B CN 116622207B
Authority
CN
China
Prior art keywords
polycarbonate
parts
protective film
screen
polyhydroxy compound
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
Application number
CN202310608305.XA
Other languages
Chinese (zh)
Other versions
CN116622207A (en
Inventor
禹利文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Huachi Polymer Material Co ltd
Original Assignee
Dongguan Huachi Polymer Material Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dongguan Huachi Polymer Material Co ltd filed Critical Dongguan Huachi Polymer Material Co ltd
Priority to CN202310608305.XA priority Critical patent/CN116622207B/en
Publication of CN116622207A publication Critical patent/CN116622207A/en
Application granted granted Critical
Publication of CN116622207B publication Critical patent/CN116622207B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18Manufacture of films or sheets
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/42Chemical after-treatment
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2369/00Characterised by the use of polycarbonates; Derivatives of polycarbonates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04Homopolymers or copolymers of ethene
    • C08J2423/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/05Alcohols; Metal alcoholates
    • C08K5/053Polyhydroxylic alcohols
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/09Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098Metal salts of carboxylic acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/15Heterocyclic compounds having oxygen in the ring
    • C08K5/151Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
    • C08K5/1535Five-membered rings
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/08Ingredients agglomerated by treatment with a binding agent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Laminated Bodies (AREA)

Abstract

The application relates to the technical field of surface protection films, and particularly discloses a screen protection film and a preparation method thereof. The screen protective film comprises the following raw materials in parts by weight: 25-35 parts of polycarbonate, 5-8 parts of tert-butylaminoethyl methacrylate, 6-10 parts of perfluorodecyltrimethoxysilane, 5-7 parts of inorganic nanoparticles, 5-8 parts of ultra-high molecular weight polyethylene, 8-12 parts of 3- (trimethoxysilyl) propyl-2-methyl-2-acrylic ester, 3-5 parts of calcium zinc stabilizer and 12-18 parts of polyhydroxy compound; the preparation method comprises the following steps: after the pretreatment of the polycarbonate and the inorganic nano particles, the raw materials are added and mixed uniformly at one time, and after heating, melting and extrusion, the screen protective film is obtained through shaping and cooling. The protective film for the screen can be used for the surface of an optical product and has the advantage of good friction resistance.

Description

Protective film for screen and preparation method thereof
Technical Field
The application relates to the technical field of surface protection films, in particular to a screen protection film and a preparation method thereof.
Background
With the development of technology, touch screen products such as mobile phones, tablet computers and optical touch screens have become indispensable articles for people to live, and in order to prevent the touch screen from being scratched or scratched by nails or other hard objects, most consumers attach a layer of high-quality and low-cost protective film to the touch screen.
The materials of the screen protection film are continuously updated, and the materials are developed into toughened glass films, TPU films, full-plastic composite films and the like which are mainstream in the past from initial PC (polycarbonate) films, PVC (polyvinyl chloride) films and PET (polyethylene terephthalate) films. In order to improve the sensory experience and vision protection of users, the screen protective film is not simple anti-falling and anti-shock any more, and more optical protective films with high transmittance, anti-dazzle, anti-blue light and the like are claimed. However, the screen protective film still has the problems of wear resistance, easy scratch occurrence, increased strength of eyes, eye fatigue and visual influence.
Disclosure of Invention
In order to improve the wear resistance of a screen protective film, the application provides a protective film for a screen and a preparation method thereof.
In a first aspect, the present application provides a protective film for a screen, which adopts the following technical scheme:
the screen protective film comprises the following raw materials in parts by weight: 25-40 parts of polycarbonate, 5-8 parts of tert-butylaminoethyl methacrylate, 6-10 parts of perfluorodecyltrimethoxysilane, 5-7 parts of inorganic nanoparticles, 5-8 parts of ultra-high molecular weight polyethylene, 8-12 parts of 3- (trimethoxysilyl) propyl-2-methyl-2-acrylic ester, 3-5 parts of calcium zinc stabilizer and 12-18 parts of polyhydroxy compound.
By adopting the technical scheme, polycarbonate and ultra-high molecular weight polyethylene are used as base materials of the protective film material, the ultra-high molecular weight polyethylene is selected to have the molecular weight of 170-300 ten thousand, the ultra-high molecular weight polyethylene with the molecular weight of more than 170 ten thousand has better wear resistance, the polyethylene with the higher molecular weight has better performance, but the processability is poor, the ultra-high molecular weight polyethylene has lower self friction coefficient when the molecular weight is between 170 ten thousand-300 ten thousand, the long linear structure of the ultra-high molecular weight polyethylene is blended and modified with the polycarbonate, the ultra-high molecular weight polyethylene is mutually wound and connected with hydroxyl compounds, the problem of poor wear resistance of the polycarbonate is solved, the friction resistance and the impact resistance of the product protective film are improved, and the added perfluoro decyl trimethoxysilane and the silicon-oxygen bond in the silane coupling agent can form Si-OH to participate in condensation reaction with the polyhydroxy compound to form an organic-inorganic double-layer structure, so that the wear resistance of the protective film is further enhanced.
Optionally, the polycarbonate is modified polycarbonate, and is obtained through modification treatment of aminopropyl triethoxysilane and tetramethyl ammonium acetate.
By adopting the technical scheme, the polycarbonate is aromatic polycarbonate, has excellent mechanical properties, good impact resistance and good processing property, but has smaller surface energy and poor adhesion with other raw materials, and the surface of the polycarbonate is modified to improve the reactivity and adhesion with other raw materials, and the reactivity of the surface of the polycarbonate is greatly improved by modifying the surface of the polycarbonate by aminopropyl triethoxy silane.
Optionally, the preparation method of the modified polycarbonate comprises the following steps:
(1) After adding isopropanol into the polycarbonate, cleaning the surface of the polycarbonate by ultrasonic waves;
(2) And (3) placing the cleaned polycarbonate into a hydrochloric acid solution, heating the polycarbonate to 100 ℃ in a water bath, stirring for 5-10min, fully washing and drying, immersing the polycarbonate into a mixed solution of aminopropyl triethoxysilane and tetramethylammonium acetate, and stirring for reaction to obtain the modified polycarbonate.
By adopting the technical scheme, isopropanol is added, simultaneously, the polycarbonate is subjected to ultrasonic treatment to remove dust and grease on the surface of the polycarbonate, hydrochloric acid hydrolyzes the polycarbonate to enable the surface of the polycarbonate to be carboxylated, better adhesiveness and reactivity are given to the surface of the polycarbonate, aminopropyl triethoxysilane and tetramethyl ammonium acetate undergo polycondensation reaction, active molecules occupy the surface of the polycarbonate, and the active molecules are closely arranged together through Van der Waals force and intermolecular hydrogen bonds to form an interface lubricating film, so that the surface friction coefficient of the protective film is reduced, and the friction resistance of the protective film is improved.
Optionally, the polyhydroxy compound is one of vitamin C and mannitol.
By adopting the technical scheme, the hydroxyl functional groups in the polyhydroxy compound provide long-term adhesion to the matrix, and can perform polycondensation reaction with the functional groups on the surface of the polycarbonate to form firm chemical bonds, so that the friction resistance of the protective film is improved.
Optionally, the inorganic nanoparticle is one of nano porcelain clay, nano alumina and nano silicon dioxide.
By adopting the technical scheme, the addition of a proper amount of inorganic nano particles obviously improves the hardness of the material, so that friction matters are difficult to press into the protective film, and the friction coefficient is reduced, thereby greatly improving the wear resistance and durability of the protective film.
Optionally, the particle size of the inorganic nanoparticle is 50-80nm.
By adopting the technical scheme, the size effect and macroscopic quantum tunneling effect of the nano inorganic ions can enable particles to penetrate into the vicinity of unsaturated bonds of a polymer chain, act with electron clouds of the unsaturated bonds, densify a network structure, and therefore the wear resistance and durability of the material are improved.
Optionally, the screen protective film raw material further comprises 3-5 parts of organic glass.
By adopting the technical scheme, the organic glass has good compatibility with polycarbonate, and the organic glass is used as a better thermoplastic plastic, has a soft long molecular chain and can greatly improve the toughness and the shock resistance of the protective film.
In a second aspect, the present application provides a method for preparing a protective film for a screen, which adopts the following technical scheme:
the preparation method of the protective film for the screen comprises the following preparation modes:
(1) Adding tert-butylaminoethyl methacrylate, perfluorodecyltrimethoxysilane and perfluorodecyltrimethoxysilane into polycarbonate, adding hydrochloric acid, heating in water bath to 80-100 ℃, and stirring for reaction to obtain pretreated polycarbonate;
(2) Immersing inorganic nano particles into 3- (trimethoxysilyl) propyl-2-methyl-2-acrylic ester in advance, stirring for reaction, and filtering out for later use;
(3) Drying the pretreated polycarbonate obtained in the step (1) in an oven at 80-100 ℃, and controlling the moisture content of the polycarbonate to be less than 0.02%;
(4) And (3) adding the polycarbonate dried in the step (3), the ultra-high molecular weight polyethylene, the polyhydroxy compound and the calcium-zinc stabilizer into the mixture at one time, uniformly mixing the mixture, continuously extruding the mixture, and carrying out shaping and cooling to obtain the screen protective film.
Through adopting above-mentioned technical scheme, the moisture content in the dry control polycarbonate before extrusion, the existence of moisture leads to the fact the influence to follow-up reaction easily under high temperature, leads to the polycarbonate to take place the degradation, and the viscosity drops, leads to unable shaping, dries in advance in order to avoid the influence of moisture to the reaction. The material is subjected to solid state, molten state and solid state morphological change to obtain a final product, and each raw material component is subjected to chemical reaction in the molten state, so that the friction resistance and the impact resistance of the protective film are improved.
In summary, the application has the following beneficial effects:
1. the application adopts hydroxyl-containing polymer and polycarbonate surface to perform polycondensation reaction to form firm chemical bond, so that active molecules occupy each bonding position on the surface of the base material, and adsorbed molecules are tightly arranged together through intermolecular hydrogen bond and Van der Waals force, thereby forming a layer of uniformly distributed, tightly arranged and two-dimensional ordered structure on the surface of the base material, endowing the surface of the protective film with oil and water repellency, and improving the impact strength and wear resistance of the protective film.
2. In the application, tetramethyl ammonium acetate and aminopropyl triethoxy silane are preferably adopted to modify polycarbonate, and the tetramethyl ammonium acetate and the aminopropyl triethoxy silane have anionic functional groups and cationic functional groups, and can react with the polycarbonate to form a polycarbonate ion modified copolymer, so that the wear resistance and the fracture resistance of the protective film are improved, and the modified polycarbonate is combined with an organosilicon network and other raw materials to form a network structure of siloxane bonds with high crosslinking density, so that the protective film with good wear resistance is prepared.
Detailed Description
The present application will be described in further detail with reference to examples.
Ultra-high molecular weight polyethylene was purchased from the company of Corp. High pressure polyethylene was purchased from the Dongguan city Chang Pingrui abundant raw materials commercial sector; poly bisphenol A carbonate was purchased from North Chengfengcheng chemical Co.
The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Examples of preparation of starting materials and/or intermediates
Preparation example 1
A modified polycarbonate is prepared by the following steps:
(1) Adding 55kg of isopropanol into 40kg of poly bisphenol A carbonate, and carrying out ultrasonic treatment at 30KHZ for 20min to pretreat the surface of the poly bisphenol A carbonate;
(2) And (3) putting the pretreated poly bisphenol A carbonate into 50kg of hydrochloric acid solution, stirring for 5min, fully washing with water, drying, immersing into a mixed solution of 25kg of aminopropyl triethoxysilane and 25kg of tetramethyl ammonium acetate, and stirring for reaction to obtain the modified polycarbonate.
Preparation example 2
A modified polycarbonate is prepared by the following steps:
(1) Adding 55kg of isopropanol into 40kg of poly bisphenol A carbonate, and carrying out ultrasonic treatment at 30KHZ for 20min to pretreat the surface of the poly bisphenol A carbonate;
(2) And (3) putting the pretreated poly bisphenol A carbonate into 50kg of hydrochloric acid solution, stirring for 8min, fully washing and drying, immersing into a mixed solution of 26.5kg of aminopropyl triethoxysilane and 20kg of tetramethyl ammonium acetate, and stirring for reaction to obtain the modified polycarbonate.
Preparation example 3
A modified polycarbonate is prepared by the following steps:
(1) Adding 55kg of isopropanol into 40kg of poly bisphenol A carbonate, and carrying out ultrasonic treatment at 30KHZ for 20min to pretreat the surface of the poly bisphenol A carbonate;
(2) And (3) putting the pretreated poly bisphenol A carbonate into 50kg of hydrochloric acid solution, stirring for 8min, fully washing and drying, immersing into a mixed solution of 28kg of aminopropyl triethoxysilane and 22.5kg of tetramethyl ammonium acetate, and stirring for reaction to obtain the modified polycarbonate.
Examples
Example 1
A protective film for a screen, comprising the steps of:
(1) Adding 8kg of tert-butylaminoethyl methacrylate and 7kg of perfluorodecyl trimethoxy silane into 25kg of poly bisphenol A carbonate, adding hydrochloric acid, heating in a water bath to 80-100 ℃, and stirring for reaction for 10min to obtain pretreated polycarbonate;
(2) Immersing 5kg of nano porcelain clay into 12kg of 3- (trimethoxysilyl) propyl-2-methyl-2-acrylic ester in advance, stirring for reaction, and filtering out for later use;
(3) Drying the pretreated poly bisphenol A carbonate obtained in the step (1) in an oven at 80 ℃ to control the moisture content of the poly bisphenol A carbonate to be less than 0.02%;
(4) Uniformly mixing the dried poly bisphenol A carbonate in the step (3) with 8kg of ultra-high molecular weight polyethylene, 18kg of vitamin C and 5kg of calcium stearate, adding the mixture into a double-screw extruder at one time, continuously extruding at 230 ℃, shaping and cooling to obtain the screen protective film.
Example 2
A protective film for a screen, comprising the steps of:
(1) Adding 6.5kg of tert-butylaminoethyl methacrylate and 5kg of perfluorodecyl trimethoxy silane into 30kg of poly bisphenol A carbonate, adding hydrochloric acid, heating in a water bath to 100 ℃, and stirring for reaction for 10min to obtain pretreated polycarbonate;
(2) Immersing 6kg of nano porcelain clay into 10kg of 3- (trimethoxysilyl) propyl-2-methyl-2-acrylic ester in advance, stirring for reaction, and filtering out for later use;
(3) Drying the pretreated poly bisphenol A carbonate obtained in the step (1) in an oven at 80 ℃ to control the moisture content of the poly bisphenol A carbonate to be less than 0.02%;
(4) Uniformly mixing the dried poly bisphenol A carbonate in the step (3) with 6.5kg of ultra-high molecular weight polyethylene, 14kg of vitamin C and 3kg of calcium stearate, adding the mixture into a double-screw extruder at one time, continuously extruding at 230 ℃, shaping and cooling to obtain the screen protective film.
Example 3
(1) Adding 5kg of tert-butylaminoethyl methacrylate and 6kg of perfluorodecyl trimethoxy silane into 35kg of poly bisphenol A carbonate, adding hydrochloric acid, heating in a water bath to 90 ℃, and stirring for reaction for 10min to obtain pretreated poly bisphenol A carbonate;
(2) Immersing 7kg of nano porcelain clay into 8kg of 3- (trimethoxysilyl) propyl-2-methyl-2-acrylic ester in advance, stirring for reaction, and filtering out for later use;
(3) Drying the pretreated poly bisphenol A carbonate obtained in the step (1) in a drying oven at 100 ℃, and controlling the moisture content of the poly bisphenol A carbonate to be less than 0.02%;
(4) Uniformly mixing the dried poly bisphenol A carbonate in the step (3) with 5kg of ultra-high molecular weight polyethylene, 12kg of vitamin C and 4kg of zinc stearate, adding the mixture into a double-screw extruder at one time, continuously extruding at 230 ℃, shaping and cooling to obtain the screen protective film.
Example 4
The protective film for a screen is different from example 1 in that the polycarbonate used in this example is a modified polycarbonate prepared in preparation example 1.
Example 5
The protective film for a screen is different from example 1 in that the polycarbonate used in this example is a modified polycarbonate prepared in preparation example 2.
Example 6
The protective film for a screen is different from example 1 in that the polycarbonate used in this example is a modified polycarbonate prepared in preparation example 3.
Example 7
A protective film for a screen is different from example 6 in that the polyhydroxy compound used in this example is mannitol.
Example 8
A protective film for a screen is different from example 7 in that the nanoparticles used in this example are nano alumina.
Example 9
A protective film for a screen is different from example 7 in that the nanoparticles used in this example are nanosilica.
Example 10
A protective film for a screen was different from example 8 in that 3kg of organic glass was further added in this example.
Example 11
A protective film for a screen was different from example 8 in that 5kg of organic glass was also added in this example.
Comparative example
Comparative example 1
A protective film for a screen is different from example 1 in that the raw material is replaced with an equivalent amount of polyethylene carbonate to the poly bisphenol A carbonate.
Comparative example 2
A protective film for a screen is different from example 1 in that a polyhydroxy compound is substituted with an equivalent amount of polycarbonate in the raw material.
Comparative example 3
A protective film for a screen is different from example 1 in that the ultra-high molecular weight polyethylene is replaced with the same amount of high pressure polyethylene in the raw material.
Performance test
Detection method/test method abrasion resistance test: detecting the abrasion resistance of the screen protective film according to the abrasion resistance test method in Q/Ali 00006-2017 technical Specification of Mobile phone protective film, and reacting the abrasion resistance of the protective film with the change of the contact angle of water before and after abrasion;
impact resistance: the impact resistance test of the protective film is carried out by using a ball falling impact tester MY-LQT-1800, and the ball falling control method comprises the following steps: direct current electromagnetic control; ball height: 60cm; the impact test was performed using 100g, 150g, 300g and 500g of test balls, respectively, and the damage condition of the protective film was observed, and the maximum impact energy that the protective film can withstand was calculated.
TABLE 1 Performance test experiments
As can be seen from a combination of example 1 and comparative examples 1-2 and Table 1, the experimental data of example 1 are better than those of comparative examples 1-2, indicating that perfluorodecyl trimethoxysilane reacts with high molecular weight polyethylene of the base material and polycarbonate to provide a strong hydrophobic and oleophobic ability to the surface, and reactive groups are provided for the reaction between the raw materials to further react the polycarbonate with hydroxyl compounds to enhance the abrasion resistance of the surface of the protective film.
As can be seen from the combination of example 1 and comparative example 3 and the table 1, each test data of example 1 is superior to comparative example 3, indicating that the abrasion resistance of the protective film is reduced and the strength is also reduced in the absence of blending reinforcement of ultra-high molecular weight polyethylene.
As can be seen from the combination of examples 1 to 6 and table 1, the data of examples 4 to 6 are better than those of examples 1 to 3, which shows that the modified polycarbonate-made protective film has better reactivity and good compatibility with other components, so that the prepared protective film has better surface friction resistance and impact resistance.
It can be seen from the combination of examples 6 to 7 and Table 1 that the protective film for screen having good abrasion resistance can be obtained when vitamin C and mannitol are used as the polyhydroxy compound; as can be seen from the combination of examples 7 to 9 and Table 1, a protective film for a screen having a good friction resistance can be obtained by using any one of inorganic particles of nano porcelain clay, nano alumina and nano silica.
As can be seen from the combination of examples 8 and examples 10 to 11 and table 1, each test data of examples 9 to 10 is superior to example 8, which shows that when the organic glass is added, the system can form a good chemical reaction with the organic glass to fuse the superior performance of the organic glass, and further improve the wear resistance and impact resistance of the protective film.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.

Claims (5)

1. The screen protective film is characterized by comprising the following raw materials in parts by weight: 25-35 parts of polycarbonate, 5-7 parts of inorganic nano particles, 5-8 parts of ultra-high molecular weight polyethylene, 8-12 parts of 3- (trimethoxysilyl) propyl-2-methyl-2-acrylic ester, 3-5 parts of calcium zinc stabilizer and 12-18 parts of polyhydroxy compound; the polycarbonate is obtained through pretreatment of tert-butylaminoethyl methacrylate and perfluorodecyltrimethoxysilane, and the pretreatment steps are as follows: adding tert-butylaminoethyl methacrylate and perfluorodecyltrimethoxysilane into polycarbonate, adding hydrochloric acid, heating in water bath to 80-100 ℃, and stirring for reaction to obtain pretreated polycarbonate; the polyhydroxy compound is one of vitamin C and mannitol; the inorganic nano particles are one of nano porcelain clay, nano alumina and nano silicon dioxide.
2. The screen protective film is characterized by comprising the following raw materials in parts by weight: 25-35 parts of polycarbonate, 5-7 parts of inorganic nano particles, 5-8 parts of ultra-high molecular weight polyethylene, 8-12 parts of 3- (trimethoxysilyl) propyl-2-methyl-2-acrylic ester, 3-5 parts of calcium zinc stabilizer and 12-18 parts of polyhydroxy compound, wherein the polycarbonate is modified polycarbonate, and is obtained through aminopropyl triethoxysilane and tetramethyl ammonium acetate modification treatment, and the modification treatment comprises the following steps: (1) After adding isopropanol into the polycarbonate, cleaning the surface of the polycarbonate by ultrasonic waves; (2) Placing the cleaned polycarbonate into a hydrochloric acid solution, heating the polycarbonate to 100 ℃ in a water bath, stirring for 5-10min, fully washing and drying, immersing the polycarbonate into a mixed solution of aminopropyl triethoxysilane and tetramethyl ammonium acetate, and stirring for reaction to obtain modified polycarbonate; the polyhydroxy compound is one of vitamin C and mannitol; the inorganic nano particles are one of nano porcelain clay, nano alumina and nano silicon dioxide.
3. A protective film for a screen according to any one of claims 1 to 2, characterized in that: the particle size of the inorganic nano particles is 50-80nm.
4. A protective film for a screen according to claim 2, wherein: the screen protective film raw material also comprises 3-5 parts of organic glass.
5. A method for producing a protective film for a screen according to any one of claims 1 to 2, comprising the following production modes:
(1) Taking pretreated or modified polycarbonate for later use;
(2) Immersing inorganic nano particles into 3- (trimethoxysilyl) propyl-2-methyl-2-acrylic ester in advance, stirring for reaction, and filtering out for later use;
(3) Drying the polycarbonate in the step (1) in an oven at 80-100 ℃ and controlling the moisture content of the polycarbonate to be less than 0.02%;
(4) And (3) adding the polycarbonate dried in the step (3), the ultra-high molecular weight polyethylene, the polyhydroxy compound and the calcium-zinc stabilizer into the mixture at one time, uniformly mixing the mixture, continuously extruding the mixture, and carrying out shaping and cooling to obtain the screen protective film.
CN202310608305.XA 2023-05-27 2023-05-27 Protective film for screen and preparation method thereof Active CN116622207B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310608305.XA CN116622207B (en) 2023-05-27 2023-05-27 Protective film for screen and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310608305.XA CN116622207B (en) 2023-05-27 2023-05-27 Protective film for screen and preparation method thereof

Publications (2)

Publication Number Publication Date
CN116622207A CN116622207A (en) 2023-08-22
CN116622207B true CN116622207B (en) 2023-10-27

Family

ID=87612962

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310608305.XA Active CN116622207B (en) 2023-05-27 2023-05-27 Protective film for screen and preparation method thereof

Country Status (1)

Country Link
CN (1) CN116622207B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1382188A (en) * 1999-10-27 2002-11-27 拜尔公司 Blended polycarbonate compositions
JP2004123996A (en) * 2002-10-07 2004-04-22 Hitachi Ltd Hydrophilic film and hydrophobic film formed on organic resin
JP2004331812A (en) * 2003-05-07 2004-11-25 Fuji Photo Film Co Ltd Composition containing fluoroaliphatic group-containing polymer, film, antireflective film and display device
CN106566222A (en) * 2016-11-01 2017-04-19 王华勤 Screen protection film
CN109306244A (en) * 2018-09-18 2019-02-05 深圳市派旗纳米技术有限公司 A kind of HF nanometer film and preparation method thereof
CN111793343A (en) * 2020-07-13 2020-10-20 万华化学集团股份有限公司 Polycarbonate composition and preparation method thereof
CN113291010A (en) * 2021-05-13 2021-08-24 日氟荣高分子材料(上海)有限公司 Maintenance-free transparent film, preparation method and application thereof
CN113416402A (en) * 2021-07-13 2021-09-21 深圳市海枫茂光学科技有限公司 Polycarbonate composite resin and film and preparation method thereof
CN115011096A (en) * 2022-06-23 2022-09-06 万华化学(宁波)有限公司 High-hardness scratch-resistant polycarbonate composite material and preparation method thereof
CN115850944A (en) * 2022-12-21 2023-03-28 福建华塑新材料有限公司 High-light-transmittance thin-wall flame-retardant polycarbonate composition and preparation method thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1382188A (en) * 1999-10-27 2002-11-27 拜尔公司 Blended polycarbonate compositions
JP2004123996A (en) * 2002-10-07 2004-04-22 Hitachi Ltd Hydrophilic film and hydrophobic film formed on organic resin
JP2004331812A (en) * 2003-05-07 2004-11-25 Fuji Photo Film Co Ltd Composition containing fluoroaliphatic group-containing polymer, film, antireflective film and display device
CN106566222A (en) * 2016-11-01 2017-04-19 王华勤 Screen protection film
CN109306244A (en) * 2018-09-18 2019-02-05 深圳市派旗纳米技术有限公司 A kind of HF nanometer film and preparation method thereof
CN111793343A (en) * 2020-07-13 2020-10-20 万华化学集团股份有限公司 Polycarbonate composition and preparation method thereof
CN113291010A (en) * 2021-05-13 2021-08-24 日氟荣高分子材料(上海)有限公司 Maintenance-free transparent film, preparation method and application thereof
CN113416402A (en) * 2021-07-13 2021-09-21 深圳市海枫茂光学科技有限公司 Polycarbonate composite resin and film and preparation method thereof
CN115011096A (en) * 2022-06-23 2022-09-06 万华化学(宁波)有限公司 High-hardness scratch-resistant polycarbonate composite material and preparation method thereof
CN115850944A (en) * 2022-12-21 2023-03-28 福建华塑新材料有限公司 High-light-transmittance thin-wall flame-retardant polycarbonate composition and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
吴培熙;张留成著."聚合物共混改性".中国轻工业出版社,2017,(第3版),第275页. *
梁增田."塑料用涂料与涂装".科学技术文献出版社,2006, 第179页. *
许健南."塑料材料".中国轻工业出版社,1999,第235页. *

Also Published As

Publication number Publication date
CN116622207A (en) 2023-08-22

Similar Documents

Publication Publication Date Title
JP7089042B2 (en) Self-adhesive silicone elastomer
TWI457373B (en) Organopolysilmethylenesiloxane and a cured product thereof
WO2016039546A1 (en) Matte coating composition
JP2002541616A (en) Conductive flexible composition and method for producing the same
CN107177146A (en) A kind of weather-resistance flame-retardant high-performance glass surface protection film and preparation method thereof
CN116622207B (en) Protective film for screen and preparation method thereof
CN103540136B (en) Discolouration organopolysiloxane composition and the structure using said composition adhesion
TWI461476B (en) A resin composition, and a transparent resin molded article and a coating film using the same
CN115044084B (en) Application of polyborosiloxane elastomer in display screen protection
EP3775048B1 (en) Thermoplastic composition
CN101591504B (en) Single-component organic silicon flame-retardant coating type paint
KR101714901B1 (en) Release film for asphalt sheet and preparing thereof
EP2011832A1 (en) Thermoplastic resin composition and process for production thereof
KR101667445B1 (en) Silane based compound, method for preparing the same and polycarbonate resin composition comprising the same
CN101760094A (en) Ethylene copolymer coating containing organosilicone and preparation method thereof
KR102475745B1 (en) Thermoplastic resin composition, method for preparing the thermoplastic resin composition and molding products thereof
TWI516545B (en) Curable resin composition, article, and method for fabricating the same
CN109705490A (en) A kind of ceramic PVC edge band and preparation method thereof
KR101531466B1 (en) Method for manufacturing protecting skin for electronic appliances and protecting skin
CN115353695B (en) Polyvinyl chloride waterproof coiled material and preparation method thereof
CN105985547A (en) Multifunctional rubber material
CN117143453A (en) Low-hardness fatigue-resistant high-wear-resistant screen pressing rubber block and preparation method thereof
KR20100079785A (en) Polycarbonate resin composition with superior scratch resistance
CN108137916B (en) Polycarbonate resin composition
CN105968450A (en) A low-smoke flame retardant rubber cable material

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