CN104774581A

CN104774581A - High-viscosity acrylic acid adhesive

Info

Publication number: CN104774581A
Application number: CN201410008517.5A
Authority: CN
Inventors: 金闯; 张庆杰
Original assignee: Sidike New Materials Jiangsu Co Ltd
Current assignee: Sidike New Materials Jiangsu Co Ltd
Priority date: 2014-01-09
Filing date: 2014-01-09
Publication date: 2015-07-15

Abstract

The invention discloses a high-viscosity acrylic acid adhesive. The high-viscosity acrylic acid adhesive is composed of, by weight, 75 to 78 parts of methyl methacrylate, 30 to 32 parts of ethyl acrylate, 16 to 18 parts of dimethyldiethoxysilane, 40 to 45 parts of a solvent, 2.2 to 2.8 parts of nano-grade SiO2 powder, 1.2 to 1.8 parts of nano-grade Al2O3 powder, 0.2 to 0.5 part of micron-grade SiO2 powder, 0.2 to 0.5 part of micron-grade Al2O3 powder, 0.8 to 1 part of an isocyanic acid ester, 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, and 1 to 1.5 parts of a coupling agent; wherein chemical formula of the coupling agent is CH2=CH-Si(OC2H5)3. According to the preparation method, roughness of acrylic acid adhesive is increased without increasing particle diameter; clustering is avoided; sedimentation of SiO2 powder and Al2O3 powder in an obtained system is avoided; and binding force with a base material is increased.

Description

High viscosity vinylformic acid sizing agent

Technical field

The present invention relates to a kind of vinylformic acid sizing agent, particularly a kind of high viscosity vinylformic acid sizing agent.

Background technology

Vinylformic acid sizing agent is for sticking in another kind of object by certain object.People pay attention to more for the visual requirement such as style, color of various furniture or electronic product, and therefore the outward appearance of electronic product seems particularly important, and 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 high viscosity vinylformic acid sizing agent, this high viscosity vinylformic acid sizing agent 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 high viscosity vinylformic acid sizing agent, and described high viscosity vinylformic acid sizing agent 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,

Note olefine resin 4 ~ 5 parts,

Azo-compound 1.2 ~ 1.5 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 Al ₂o 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. high viscosity vinylformic acid sizing agent of the present invention, it adopts 2.2 ~ 2.8 parts of nano levels and 0.2 ~ 0.5 part of micron order SiO ₂powder, 1.2 ~ 1.8 parts of nano levels and 0.2 ~ 0.5 part of micron order Al ₂o ₃powder and methyl methacrylate 75 ~ 78 parts, ethyl propenoate 30 ~ 32 parts, dimethyldiethoxysilane 16 ~ 18 parts and silane coupling agent 1 ~ 1.5 part, isocyanic ester 0.8 ~ 1 part of 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, adding of azo-compound 1.2 ~ 1.5 parts, it also avoid micron order SiO ₂powder, Al ₂o ₃the sedimentation of powder in system, improves and base material bonding force.

2. high viscosity vinylformic acid sizing agent of the present invention, Gum Rosin 4.5 ~ 5 parts, note olefine resin 4 ~ 5 parts and methyl methacrylate 75 ~ 78 parts, ethyl propenoate 30 ~ 32 parts, dimethyldiethoxysilane 16 ~ 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 high viscosity vinylformic acid sizing agent, described high viscosity vinylformic acid sizing agent 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,

Note olefine resin 4 ~ 5 parts,

Azo-compound 1.2 ~ 1.5 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.

The each ingredients weight parts content of embodiment 1 ~ 5 high viscosity vinylformic acid sizing agent is in table 1.

Table 1

	Embodiment one	Embodiment two	Embodiment three	Embodiment four	Embodiment five
						Methyl methacrylate	78	76	75	78	78
Ethyl propenoate	32	32	31	30	31.5
						Dimethyldiethoxysilane	16	17	18	17	16
Solvent	41	42.5	45	42	43
						Nano level SiO ₂Powder	2.8	2.4	2.5	2.3	2.6
Nano level Al2O ₃Powder	1.8	1.4	1.5	1.6	1.2
						Micron order SiO ₂Powder	0.45	0.5	0.3	0.4	0.2
Micron order Al ₂O ₃Powder	0.25	0.3	0.35	0.45	0.4
						Isocyanic ester	0.95	1	0.9	0.8	0.85
Gum Rosin	4.5	5	4.5	5	4.8
						Note olefine resin	4.8	4	5	4.2	4.5
Azo-compound	1	1.4	1.2	1.2	1.5
						Coupling agent	1.4	1	1.5	1	1.2

A preparation technology for high viscosity vinylformic acid sizing agent, comprises 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 1 ~ 1.5 part of silane coupling agent add in the first solvent and carry out ultrasonication and obtain pre-dispersed liquid;

Step 2. is by 2.2 ~ 2.8 parts of nano level SiO ₂powder, 1.2 ~ 1.8 parts of nano level Al ₂o ₃powder and isocyanic ester 0.8 ~ 1 part add in pre-dispersed liquid carry out ultrasonication obtain modulation after pre-dispersed liquid;

Methyl methacrylate 75 ~ 78 parts, ethyl propenoate 30 ~ 32 parts and dimethyldiethoxysilane 16 ~ 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 4.5 ~ 5 parts by step 4. successively, note olefine resin 4 ~ 5 parts, azo-compound 1.2 ~ 1.5 parts, carries out mechanical high-speed stirring and ultrasonic stirring, thus obtains high viscosity vinylformic acid sizing agent.

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. a high viscosity vinylformic acid sizing agent, is characterized in that: described high viscosity vinylformic acid sizing agent 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,

Note olefine resin 4 ~ 5 parts,

Azo-compound 1.2 ~ 1.5 parts,

Coupling agent 1 ~ 1.5 part;

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

2. high viscosity vinylformic acid sizing agent 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. high viscosity vinylformic acid sizing agent according to claim 1, is characterized in that: described solvent is at least one in toluene, ethyl acetate and butanone.