Mobile phone protection film preparation method

A technology of protective film and mobile phone, which is applied in the field of preparation of mobile phone protective film, can solve the problems of dust-absorbing mobile phone screen, general anti-static effect, and poor anti-static durability, so as to improve anti-static effect, improve mechanical properties and durability Grinding performance, enhanced compatibility effect

Active Publication Date: 2018-12-21
NINGBO KELAIEN NEW MATERIAL TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

Most of the mobile phone protective film is made of insulating materials such as PET, PE, PP, etc. The appearance of the mobile phone protective film has brought us a lot of convenience, but also brought us some troubles: when the mobile phone protective film is rubbed, it is easy to generate static electricity. Vacuuming and scratching the phone screen after multiple touches, etc.
[0003] In the Chinese invention patent application number 201410318117.4, a mobile phone film is introduced, which is composed of a PET base film and an SMC composite coating. The mobile phone film can effectively prevent static electricity, but its wear resistance is poor and antistatic. poor durability
In the Chinese invention patent application number 201410663659.5, a composite mobile phone protective film is introduced, which is composed of a scratch-resistant layer, a fluorescent layer, a waterproof layer, an antistatic layer and an adhesive layer. The mobile phone protective film has waterproof, dustproof, antistatic and Anti-scratch and other features, but its anti-static effect is average, and it is also prone to white spots or dirt

Method used

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preparation example Construction

[0019] The embodiment of the present invention provides a method for preparing a mobile phone protective film, comprising the following steps: extruding and granulating 80-100 parts by weight of a polyester masterbatch and 10-20 parts by weight of a functional filler to obtain a functional masterbatch. The filler is polyaniline-coated graphene and modified zinc oxide particles; the polyester base material and the functional masterbatch are melt-extruded, cast, stretched, heat-treated, and cut to obtain a mobile phone protective film. The functional masterbatch is obtained by extruding and granulating 80-100 parts by weight of polyester masterbatch and 10-20 parts by weight of functional filler, preferably by aniline monomer soap-free emulsion polymerization.

[0020] As a preferred version, the modified zinc oxide is prepared according to the following method: Zn(N0 3 ) 2 and FeS0 4 After mixing according to a certain molar ratio, quickly add oxalic acid, and stir in a water...

Embodiment 1

[0033] A mobile phone protective film is prepared from 100 parts by weight of polyester base material FG600 and 20 parts by weight of functional masterbatch through melt extrusion, cast casting, stretching and setting, heat treatment and cutting.

[0034] The functional masterbatch is obtained by extruding and granulating 100 parts by weight of polyester masterbatch FG610 and 10 parts by weight of functional filler. The specific preparation method is as follows:

[0035] (1) Place polyester masterbatches and functional fillers in corresponding parts by weight in a vacuum drying oven and dry at 100°C for 6 hours;

[0036] (2) Put the dried slices and functional fillers into the internal mixer of the torque rheometer and blend for 0.5h, and the blending temperature is 260°C;

[0037] (3) Extrude in a twin-screw extruder and pelletize to obtain a functional masterbatch. The extrusion process conditions are: screw temperature 230°C in zone 1, 240°C in zone 2, 250°C in zone 3, 260°...

Embodiment 2

[0049] A mobile phone protective film is prepared from 100 parts by weight of polyester base material FG604 and 25 parts by weight of functional masterbatch through melt extrusion, cast casting, stretching and setting, heat treatment and cutting.

[0050] The functional masterbatch is obtained by extruding and granulating 80 parts by weight of polyester masterbatch FG612 and 10 parts by weight of functional filler. The specific preparation method is as follows:

[0051] (1) Put the polyester masterbatch and functional fillers in corresponding parts by weight in a vacuum drying oven and dry at 120°C for 6 hours;

[0052] (2) Put the dried slices and functional fillers into the internal mixer of the torque rheometer and blend for 2 hours, and the blending temperature is 250°C;

[0053] (3) Extrude in a twin-screw extruder and pelletize to obtain a functional masterbatch. The extrusion process conditions are: screw temperature 235°C in zone 1, 245°C in zone 2, 260°C in zone 3, 26...

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Abstract

The invention provides a mobile phone protection film preparation method. A mobile phone protection film is prepared by the steps of melting and extruding a polyester base material and functional master batch, curtain coating and casting pieces, stretching and shaping, performing thermal treatment and tailoring. The mobile phone protection film preparation method has the advantages of simple preparation technology, easiness in operation and suitability for industrial production. Graphene and modified zinc oxide are coated by polyaniline, so that dispersity of the graphene and the modified zincoxide is effectively improved, the compatibility of the graphene and the modified zinc oxide with a polyester matrix is enhanced, the combination area of the graphene and the modified zinc oxide withthe polyester matrix is enlarged, the graphene and the modified zinc oxide are cooperated with the polyaniline to further improve an antistatic effect of the mobile phone protection film. In addition, the modified zinc oxide and the graphene have a synergistic effect and are added into a polyester system to form a stress concentration point, so that cracks generated on the matrix can be preventedfrom expanding and can be passivated; finally, the cracks are terminated and are prevented from generating destructive cracks, and mechanical property and wear resistance of the antistatic mobile phone protection film are improved; thus, the service life of the mobile phone protection film is prolonged.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a method for preparing a mobile phone protective film. Background technique [0002] With the development of electronic technology, smart phones have become an indispensable part of our lives, and mobile phone protective films have emerged as the "protector" of mobile phones, and the demand continues to increase. Most of the mobile phone protective film is made of insulating materials such as PET, PE, PP, etc. The appearance of the mobile phone protective film has brought us a lot of convenience, but also brought us some troubles: when the mobile phone protective film is rubbed, it is easy to generate static electricity. Vacuuming and getting scratched phone screens after multiple touches, etc. [0003] In the Chinese invention patent of application number 201410318117.4, a mobile phone film is introduced, which is composed of a base film of PET material and an SMC comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L67/00C08K9/10C08K3/04C08K3/22
CPCC08J5/18C08J2367/00C08K9/10C08K2003/2296C08K3/042
Inventor 吴卓慧
Owner NINGBO KELAIEN NEW MATERIAL TECH CO LTD
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