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Strippable protective film as well as preparation method and application thereof

A protective film, weight technology, applied in coatings, fire-retardant coatings, cellulose coatings, etc., can solve the problems of adverse effects of peelability, long curing time, easy to wrinkle, etc., to achieve good environmental stability, convenient construction , the effect of good weather resistance and environmental stability

Active Publication Date: 2014-07-16
潍坊胜达科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, in the above-mentioned prior art, there are usually many defects, such as poor peelability of the film, or in order to increase the peelability, a relatively large amount of release agent such as simethicone oil needs to be added, resulting in, for example, too long curing time Therefore, it is not suitable for many applications. The addition of common stripping agents also leads to easy wrinkling, cracking, air bubbles, flanging, and degumming. In the prior art, it is still difficult to obtain film adhesion and strippability. good balance between
In addition, in the above-mentioned prior art, in order to increase the antistatic property, it is usually necessary to add a certain amount of conductive filler, and in order to improve the compatibility and film-forming properties of each component, it is often necessary to add a compatibility modifier and Plasticizers, which add to the cost and complexity of the manufacturing process of the film, while also potentially adversely affecting film properties such as peelability

Method used

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  • Strippable protective film as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1: the preparation of cellulose silk

[0062] Take 10 g of original ecological cotton, crush the cotton into cotton powder, and use 500 mL of 60% by mass sulfuric acid solution to hydrolyze the cotton powder at 70°C for 10 minutes under strong stirring, and then perform centrifugation and dialysis. Washing with distilled water during separation and dialysis to remove residual sulfuric acid and obtain cellulose filaments. Detected by Hitachi S-2380N SEM, the prepared cellulose filaments have a diameter distribution of 10-30 nm and a length distribution of 50-300 nm.

[0063]

Embodiment 2

[0064] Example 2: Modification of SiO with γ-methacryloxypropyltrimethoxysilane 2 Preparation of nanoparticles:

[0065] Get 200mL of toluene as a solvent, dissolve 1g of γ-methacryloxypropyltrimethoxysilane in the solvent, then add 20g of SiO to the solvent 2 Nanoparticles, reflux under nitrogen protection for 6 hours, filter and dry at 90 ° C to prepare γ-methacryloxypropyltrimethoxysilane modified SiO 2 nanoparticles.

[0066]

Embodiment 3

[0068] Dissolve 40g of dibasic vinyl acetate resin (Korean Hanwha CP-430, degree of polymerization 450, vinyl acetate content 15%, glass transition temperature 63°C) in 160g of butyl acetate with a volume ratio of 1:1 at 70°C. In a mixed solvent of ketone and ethyl acetate, a polymer solution A was prepared, and 1.5 g of γ-methacryloxypropyltrimethoxysilane prepared according to Example 2 was used to modify SiO 2 Nanoparticles are dispersed in the polymer solution A;

[0069] Dissolve 10g of polyether polyurethane (Germany BASF, Elastollan TPU 1180A10, density 1.11g / cm3, hardness (Shore A, ASTM 2240) 80, glass transition temperature -43°C) in 40 mL N,N- In dimethylformamide (DMF), polymer solution B was prepared, and ultrasonic treatment was used to disperse 1.2 g of the cellulose silk prepared according to Example 1 in polymer solution B;

[0070] The above-mentioned polymer solution A and polymer solution B were mixed and formulated, coated by brush coating, coated on the s...

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Abstract

The invention discloses a strippable protective film and a preparation method thereof. According to the invention, 60-80wt% of biopolymer of chloroethylene and nikasol or terpolymer of chloroethylene, maleic acid or vinyl alcohol and 10-30wt% of vinyl alcohol are adopted as raw mateials. The mass resistivity of a dried thin film is less than 108 Omega.m, can meet the common anti-static electricity requirement without electric conduction titanium dioxide or under the condition of adding less electric conduction titanium dioxide, the strippable protective film has the flame retardant property which can be V0 grade, can resist the erosion of acid and alkali and has excellent favorable environmental stability. The protective film can be used for coating on various surfaces in various modes, the binding power on the surface of a saturate can be adjusted by changing the types and ratio formed by the raw materials conveniently, and the protective film can be used for decoration and protection of different experiment and devices.

Description

[0001] technical field [0002] The invention relates to a peelable protective film and its preparation method and application, in particular to a peelable protective film with antistatic, flame retardant, environmental stability and / or anti-nuclear pollution properties and its preparation method. [0003] Background technique [0004] Solid protective films (such as pressure-sensitive tapes, etc.) are suitable for large-area components and equipment. However, for many irregularly shaped parts or products, a convenient application method (such as dipping or spraying) is often desired in order to protect them quickly and efficiently. In addition, the liquid protective film can also be used to quickly remove toxic and harmful pollutants (including nuclear waste dust particles, etc.), reduce the sensitivity of equipment or devices to environmental humidity, and improve the corrosion resistance of equipment. Therefore, peelable liquid protective films are important for many fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L75/08C08L1/02C08K9/06C08K3/36C09D127/06C09D175/08C09D101/02C09D7/12C09D5/18
Inventor 辛峻伟辛胜芝
Owner 潍坊胜达科技股份有限公司