Background technology
Pressure sensitive adhesive is a kind of polymer emulsion, that Acrylic Acid Monomer emulsification is added to thermal initiation and forms to adding appropriate thermal initiator in water, environment (" polymer emulsion composition principle performance and application (second edition) " Cao Tongyu that when synthetic, system must be in anaerobic, Liu Qingpu, Hutchinson, Paul C. Bian, Chemical Industry Press).The synthetic patent of pressure sensitive adhesive is many, examination enumerates one or two, the disclosed pressure sensitive adhesive of CN1824721 is formulated in right amount by 54~58 parts, water, 0.30~0.40 part of sodium lauryl sulphate, 0.32~0.42 part of ammonium persulfate, 41~45 parts of mixtures, ammoniacal liquor, wherein mixture is by vinyl acetate, butyl acrylate, vinylformic acid is mixed with the ratio of 15: 4: 1; The compound method of described pressure sensitive adhesive is: water intaking, and heat temperature raising, and slowly add sodium dodecyl; When temperature is increased to 80~90 ℃, add ammonium persulphate; Keeping temperature is 80~90 ℃, drips mixture; Be incubated and stir 30 minutes, be progressively cooled to 55 ℃, add ammoniacal liquor and regulate pH value to 8; Continuing to be cooled to temperature is 45 ℃, and preparation completes.CN101698784A pressure sensitive adhesive and metal conductive particles form, wherein, metal conductive particles accounts for 30~80% of pressure sensitive adhesive gross weight, and pressure sensitive adhesive is comprised of each component of following weight percent: acrylic acid or the like soft monomer 30~50%, acrylic acid or the like hard monomer 5~20%, containing carboxyl class function monomer 0.5~2.5%, hydroxyl class cross-linking monomer 0.5~2.5, non-alcoholic solvent 40~60%, oil-soluble initiator 0.2~2.0% and mercaptan type chain transfer agent 0.01~0.2%.These patents are mainly paid close attention to the synthetic of emulsion itself, and in the emulsion applications of rear end, research is few.The present inventor finds that in actual practice common emulsion is difficult to carry out silk screen printing, mainly because general emulsion viscosity is too little, thereby too thin to such an extent as to cannot leave grid lines by levelling after silk-screen, if it is doubly a lot of to add general thickening material thickening can make viscosity increase, but equally cannot levelling after silk-screen, because it is poor that thickening means levelling property, and glue itself is too strong again to the sticking power of silk screen, so leave grid lines from glue plane flicks at silk screen.
Contriver has conscientiously studied the reactive force between relevant silk-screen printing process and each material, thereby has completed the present invention.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of pressure sensitive adhesive composition that can silk screen printing, and this pressure sensitive adhesive composition viscosity is very large, and blanking is quick and complete, sticky net hole not, levelling effect is fine, after glue-line is dry without bubble, without pit.
Technical problem to be solved by this invention is achieved by the following technical programs:
Pressure sensitive adhesive composition that can silk screen printing, is comprised of following six kinds of components:
A component: conventional pressure sensitive adhesive;
B component: thickening material, consumption is the 0.1-3% of A amounts of components, if there is no thickening effectiveness lower than 0.1%, can affect applying glue and its cohesive force if be greater than 3%.;
C component: flow agent, consumption is the 0.05-0.5% of A amounts of components, is greater than the cohesive force of 0.5% meeting infringement glue;
D component: the solvent that the emulsion particle in A component pressure sensitive adhesive is had to certain swelling property, addition is the 1-10% of A amounts of components, this solvent is difference along with the difference of used pressure sensitive adhesive, for example, when conventional pressure sensitive adhesive is used the flame retardant type pressure sensitive adhesive (viscosity is 3000mPa.S) of Nantong Mei Tian adhesive tape company limited, we find to adopt the ketones solvents such as acetone, butanone to have best swelling effect, and apparent upper viscosity increases at most; If composition only has A, B, C component, the viscosity of pressure sensitive adhesive can be increased to 30000mPa.S from 3000mPa.S, if but add 5% D component just can make viscosity jump to 300Pa.S, this viscosity only relies on B component thickening material to realize;
E component: the solvent to silk printing screen material nylon without wetting ability, consumption is the 1-5% of A amounts of components, when silk-screen this solvent with other composition of pressure sensitive adhesive along mesh under the effect of scraper, the mesh that speeds away, is attached on base material.;
F component: non-ionic type mould inhibitor, consumption is the 0.01-0.1% of A amounts of components.
Further, as wherein a kind of preferred version of technique scheme, the pressure sensitive adhesive composition that this can silk screen printing, is comprised of following six kinds of components:
A component: the flame retardant type pressure sensitive adhesive of Nantong Mei Tian adhesive tape company limited;
B component: the AT-70 alkali swelling type thickening material of Beijing Proview emulsion company limited, consumption is the 0.1-3% of A amounts of components;
C component: the DN-108 that Nanjing De-Nol chemical industry provides, consumption is the 0.05-0.5% of A amounts of components;
D component: ketones solvent, as acetone, butanone etc., consumption is the 1-10% of A amounts of components;
E component: hexalin, consumption is the 1-5% of A amounts of components;
F component: isothiazolinone, consumption is the 0.01-0.1% of A amounts of components.
The present invention has following beneficial effect:
The present invention be by conventional pressure sensitive adhesive and thickening material, flow agent, to the emulsion particle in A component pressure sensitive adhesive have the solvent of certain swelling property, to silk printing screen material nylon without the solvent of wetting ability, the brand-new pressure sensitive adhesive that non-ionic type mould inhibitor is made into proper ratio, this pressure sensitive adhesive viscosity is very large, blanking is quick and complete, sticky net hole not, levelling effect is fine, after glue-line is dry without bubble, without pit.
Embodiment
Below in conjunction with embodiment, the present invention will be described in detail, and embodiment is only the preferred embodiment of the present invention, is not limitation of the invention.
Embodiment 1
Pressure sensitive adhesive composition that can silk screen printing, is comprised of following six kinds of components:
A component: the flame retardant type pressure sensitive adhesive of Nantong Mei Tian adhesive tape company limited, viscosity is 3000mPa.S;
B component: the AT-70 alkali swelling type thickening material of Beijing Proview emulsion company limited, consumption is 1.5% of A amounts of components;
C component: the DN-108 that Nanjing De-Nol chemical industry provides, consumption is 0.25% of A amounts of components;
D component: acetone, consumption is 5% of A amounts of components;
E component: hexalin, consumption is 2.5% of A amounts of components;
F component: isothiazolinone, consumption is 0.05% of A amounts of components.
After tested, viscosity reaches 300Pa.S to the prepared pressure sensitive adhesive composition of this embodiment, during silk screen printing blanking quick and complete, sticky net hole not, levelling effect is fine, after glue-line is dry without bubble, without pit.
Embodiment 2
Pressure sensitive adhesive composition that can silk screen printing, is comprised of following six kinds of components:
A component: the flame retardant type pressure sensitive adhesive of Nantong Mei Tian adhesive tape company limited, viscosity is 3000mPa.S;
B component: the AT-70 alkali swelling type thickening material of Beijing Proview emulsion company limited, consumption is 3% of A amounts of components;
C component: the DN-108 that Nanjing De-Nol chemical industry provides, consumption is 0.5% of A amounts of components;
D component: butanone, consumption is 10% of A amounts of components;
E component: hexalin, consumption is 5% of A amounts of components;
F component: isothiazolinone, consumption is 0.1% of A amounts of components.
After tested, viscosity reaches 500Pa.S to the prepared pressure sensitive adhesive composition of this embodiment, during silk screen printing blanking quick and complete, sticky net hole not, levelling effect is fine, after glue-line is dry without bubble, without pit.
Embodiment 3
Pressure sensitive adhesive composition that can silk screen printing, is comprised of following six kinds of components:
A component: the flame retardant type pressure sensitive adhesive of Nantong Mei Tian adhesive tape company limited, viscosity is 3000mPa.S;
B component: the AT-70 alkali swelling type thickening material of Beijing Proview emulsion company limited, consumption is 0.1% of A amounts of components;
C component: the DN-108 that Nanjing De-Nol chemical industry provides, consumption is 0.05% of A amounts of components;
D component: butanone, consumption is 1% of A amounts of components;
E component: hexalin, consumption is 1% of A amounts of components;
F component: isothiazolinone, consumption is 0.01% of A amounts of components.
After tested, viscosity reaches 100Pa.S to the prepared pressure sensitive adhesive composition of this embodiment, during silk screen printing blanking quick and complete, sticky net hole not, levelling effect is fine, after glue-line is dry without bubble, without pit.
Embodiment 4
A component: Shenzhen Ying Kang adhesive article company limited 838 pressure sensitive adhesives, viscosity is 5000mPa.S;
B component: the AT-70 alkali swelling type thickening material of Beijing Proview emulsion company limited, consumption is 0.1% of A amounts of components;
C component: the DN-108 that Nanjing De-Nol chemical industry provides, consumption is 0.05% of A amounts of components;
D component: isophorone, consumption is 5% of A amounts of components;
E component: hexalin, consumption is 1% of A amounts of components;
F component: isothiazolinone, consumption is 0.01% of A amounts of components.
After tested, viscosity reaches 600Pa.S to the prepared pressure sensitive adhesive composition of this embodiment, during silk screen printing blanking quick and complete, sticky net hole not, levelling effect is fine, after glue-line is dry without bubble, without pit.
Embodiment 5
A component: the Dongguan City Shun Wei tackiness agent AE-8109-1 of company limited pressure sensitive adhesive, viscosity is 200mPa.S;
B component: the AT-70 alkali swelling type thickening material of Beijing Proview emulsion company limited, consumption is 2% of A amounts of components;
C component: the DN-108 that Nanjing De-Nol chemical industry provides, consumption is 0. 5% of A amounts of components;
D component: pimelinketone, consumption is 4% of A amounts of components;
E component: hexalin, consumption is 2% of A amounts of components;
F component: isothiazolinone, consumption is 0.01% of A amounts of components.
After tested, viscosity reaches 500Pa.S to the prepared pressure sensitive adhesive composition of this embodiment, during silk screen printing blanking quick and complete, sticky net hole not, levelling effect is fine, after glue-line is dry without bubble, without pit.