CN104774582A

CN104774582A - Pressure-sensitive adhesive with anti-dazzle function

Info

Publication number: CN104774582A
Application number: CN201510059418.4A
Authority: CN
Inventors: 金闯; 张庆杰
Original assignee: Suzhou Sidike New Material Science and Technology Co Ltd
Current assignee: Suzhou Sidike New Material Science and Technology Co Ltd
Priority date: 2014-01-09
Filing date: 2014-01-09
Publication date: 2015-07-15
Also published as: CN105255377A; CN104774571A; CN105255372A; CN105255406A; CN105255379A; CN105255380A; CN105255378A; CN103740294A; CN105295750A; CN105255381A; CN105255405A; CN105255407A; CN103740294B; CN105295788A; CN105295751A

Abstract

The invention provides a pressure-sensitive adhesive with an anti-dazzle function. The pressure-sensitive adhesive comprises the following components by weight: 75 to 78 parts of methyl methacrylate, 30 to 32 parts of ethyl acrylate, 16 to 18 parts of dimethyldiethoxylsilane, 40 to 45 parts of a solvent, 2.2 to 2.8 parts of nanometer SiO2 powder, 1.2 to 1.8 parts of nanometer Al2O3 powder, 0.2 to 0.5 part of micron-sized SiO2 powder, 0.2 to 0.5 part of micron-sized Al2O3 powder, 0.8 to 1 part of isocyanate, 4.5 to 5 parts of rosin resin, 4 to 5 parts of terpene resin, 1.2 to 1.5 parts of an azo-compound, 4.5 to 5 parts of an N-nitroso compound and 1 to 1.5 parts of a coupling agent. According to the invention, the roughness of the acrylic acid adhesive is improved without increase of the diameter of a particle; settlement of the SiO2 powder and the Al2O3 powder in a system is avoided; and bonding between the adhesive and a substrate is enhanced.

Description

There is the pressure-sensitive adhesive of anti-dazzle function

Technical field

The present invention relates to a kind of tackiness agent, particularly a kind of pressure-sensitive adhesive with anti-dazzle function.

Background technology

Flourish along with electronics technology, makes weeding out the old and bring forth the new of the electronic products such as such as mobile phone, MP4, MP5, camera, digital code camera, notebook computer.In order to avoid electronic product screen surface is subject to scratch or wearing and tearing, affect result of use, generally can paste in the screen surface of electronic product and foretell screen protecting film.Protective membrane is generally made up of substrate layer and the adhesive layer be coated on this substrate layer.This is also more and more higher to the requirement of adhesive tape, usually need clinging power strong and thickness at thinner adhesive tape.For electronic product or other products, once use adhesive tape, then need this adhesive tape can maintain viscosity when difference variation is large always, and can easily sizing agent be peeled off from film, secondly, prior art is being taken into account under other performances such as homogeneity, improves cloudy surface roughness and there is bottleneck.

Summary of the invention

The invention provides a kind of pressure-sensitive adhesive with anti-dazzle function, this pressure-sensitive adhesive with anti-dazzle function improves vinylformic acid sizing agent roughness when not increasing particle diameter, avoid cluster, it also avoid SiO ₂powder, Al ₂o ₃the sedimentation of powder in system, improves and base material bonding force.

For achieving the above object, the technical solution used in the present invention is: a kind of pressure-sensitive adhesive with anti-dazzle function, and described pressure-sensitive adhesive is made up of following parts by weight of component:

Methyl methacrylate 75 ~ 78 parts,

Ethyl propenoate 30 ~ 32 parts,

Dimethyldiethoxysilane 16 ~ 18 parts,

Solvent 40 ~ 45 parts,

Nano level SiO ₂powder 2.2 ~ 2.8 parts,

Nano level Al ₂o ₃powder 1.2 ~ 1.8 parts,

Micron order SiO ₂powder 0.2 ~ 0.5 part,

Micron order Al ₂o ₃powder 0.2 ~ 0.5 part,

Isocyanic ester 0.8 ~ 1 part,

Gum Rosin 4.5 ~ 5 parts,

Terpine resin 4 ~ 5 parts,

Azo-compound 1.2 ~ 1.5 parts,

N-nitroso compound 4.5 ~ 5 parts,

Coupling agent 1 ~ 1.5 part;

Described coupling agent chemical formula is: CH ₂=CH-Si(OC ₂h ₅) ₃.

The technical scheme improved further in technique scheme is as follows:

1. in such scheme, described Nano-meter SiO_2 ₂powder mean diameter is 12nm, described nanometer Al2O ₃powder is on average 30nm so far.

2., in such scheme, described solvent is at least one in toluene, ethyl acetate and butanone.

Because technique scheme is used, the present invention compared with prior art has following advantages and effect:

1. the present invention has the pressure-sensitive adhesive of anti-dazzle function, and it adopts nano level and micron order SiO ₂powder, Al ₂o ₃powder and methyl methacrylate 70 ~ 80 parts, ethyl propenoate 25 ~ 38 parts, dimethyldiethoxysilane 15 ~ 18 parts and silane coupling agent, isocyanic ester acting in conjunction, relatively single use nano level or micron order SiO ₂powder, Al ₂o ₃powder, improves vinylformic acid sizing agent roughness, is also conducive to SiO ₂powder, Al ₂o ₃powder is uniformly distributed and dispersion in system, avoids cluster; Secondly, azo-compound 1.2 ~ 1.5 parts, adding of N-nitroso compound 4.5 ~ 5 parts, it also avoid SiO ₂powder, Al ₂o ₃the sedimentation of powder in system, improves and base material bonding force.

2. the present invention has the pressure-sensitive adhesive of anti-dazzle function, Gum Rosin 4 ~ 6 parts, and terpine resin 3 ~ 6 parts and methyl methacrylate 70 ~ 80 parts, ethyl propenoate 25 ~ 38 parts, dimethyldiethoxysilane 15 ~ 18 parts of actings in conjunction, avoid knowing clearly by SiO ₂powder, Al ₂o ₃powder adds the decline of the resistance to elevated temperatures caused, and improves resistance to elevated temperatures, and the stability of viscosity under difference variation, thus improves the reliability of product.

Embodiment

Below in conjunction with embodiment, the invention will be further described:

Embodiment 1 ~ 5: a kind of pressure-sensitive adhesive with anti-dazzle function, described pressure-sensitive adhesive is made up of following parts by weight of component:

Methyl methacrylate 75 ~ 78 parts,

Ethyl propenoate 30 ~ 32 parts,

Dimethyldiethoxysilane 16 ~ 18 parts,

Solvent 40 ~ 45 parts,

Nano level SiO ₂powder 2.2 ~ 2.8 parts,

Nano level Al ₂o ₃powder 1.2 ~ 1.8 parts,

Micron order SiO ₂powder 0.2 ~ 0.5 part,

Micron order Al ₂o ₃powder 0.2 ~ 0.5 part,

Isocyanic ester 0.8 ~ 1 part,

Gum Rosin 4.5 ~ 5 parts,

Terpine resin 4 ~ 5 parts,

Azo-compound 1.2 ~ 1.5 parts,

N-nitroso compound 4.5 ~ 5 parts,

Coupling agent 1 ~ 1.5 part;

Described coupling agent chemical formula is: CH ₂=CH-Si(OC ₂h ₅) ₃.

Above-mentioned Nano-meter SiO_2 ₂powder mean diameter is 12nm, described nanometer Al ₂o ₃powder is on average 30nm so far.

Above-mentioned solvent is at least one in toluene, ethyl acetate and butanone.

Embodiment 1 ~ 5 to have in the pressure-sensitive adhesive of anti-dazzle function each ingredients weight parts content in table 1.

Table 1

There is a preparation technology for the pressure-sensitive adhesive of anti-dazzle function, comprise the following steps:

Step 1. is by 0.2 ~ 0.5 part of micron order SiO ₂powder, 0.2 ~ 0.5 part of micron order Al ₂o ₃powder and 0.5 ~ 2 part of silane coupling agent add in the first solvent and carry out ultrasonication and obtain pre-dispersed liquid;

Step 2. is by 2 ~ 3 parts of nano level SiO ₂powder, 1.2 ~ 1.8 parts of nano level Al ₂o ₃powder and isocyanic ester 0.6 ~ 1 part add in pre-dispersed liquid carry out ultrasonication obtain modulation after pre-dispersed liquid;

Methyl methacrylate 70 ~ 80 parts, ethyl propenoate 25 ~ 38 parts and dimethyldiethoxysilane 15 ~ 18 parts add in the second solvent by step 3. carries out mechanical stirring acquisition polymers soln;

The mixing of the polymers soln of pre-dispersed liquid, step 3 after the modulation of step 2 is also added Gum Rosin 4 ~ 6 parts by step 4. successively, terpine resin 3 ~ 6 parts, azo-compound 1 ~ 1.5 part, N-nitroso compound 4 ~ 6 parts, carry out mechanical high-speed stirring and ultrasonic stirring, thus obtain described formation of pressure-sensitive adhesive layer 3.

Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.

Claims

1. there is a pressure-sensitive adhesive for anti-dazzle function, it is characterized in that: described pressure-sensitive adhesive is made up of following parts by weight of component:

Methyl methacrylate 75 ~ 78 parts,

Ethyl propenoate 30 ~ 32 parts,

Dimethyldiethoxysilane 16 ~ 18 parts,

Solvent 40 ~ 45 parts,

Nano level SiO ₂powder 2.2 ~ 2.8 parts,

Nano level Al ₂o ₃powder 1.2 ~ 1.8 parts,

Micron order SiO ₂powder 0.2 ~ 0.5 part,

Micron order Al ₂o ₃powder 0.2 ~ 0.5 part,

Isocyanic ester 0.8 ~ 1 part,

Gum Rosin 4.5 ~ 5 parts,

Terpine resin 4 ~ 5 parts,

Azo-compound 1.2 ~ 1.5 parts,

N-nitroso compound 4.5 ~ 5 parts,

Coupling agent 1 ~ 1.5 part;

Described coupling agent chemical formula is: CH ₂=CH-Si(OC ₂h ₅) ₃.

2. the pressure-sensitive adhesive with anti-dazzle function according to claim 1, is characterized in that: described Nano-meter SiO_2 ₂powder mean diameter is 12nm, described nanometer Al ₂o ₃powder is on average 30nm so far.

3. the pressure-sensitive adhesive with anti-dazzle function according to claim 1, is characterized in that: described solvent is at least one in toluene, ethyl acetate and butanone.