CN111909631A - Bactericidal emulsion pressure-sensitive adhesive, dust-sticking pad and preparation method thereof - Google Patents
Bactericidal emulsion pressure-sensitive adhesive, dust-sticking pad and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L25/00—Domestic cleaning devices not provided for in other groups of this subclass
- A47L25/005—Domestic cleaning devices not provided for in other groups of this subclass using adhesive or tacky surfaces to remove dirt, e.g. lint removers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/28—Emulsion polymerisation with the aid of emulsifying agents cationic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
- C09J7/243—Ethylene or propylene polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
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- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/046—Presence of homo or copolymers of ethene in the substrate
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- C09J2433/00—Presence of (meth)acrylic polymer
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Abstract
The invention relates to the technical field of dust sticking pads, in particular to a bactericidal emulsion pressure-sensitive adhesive, a dust sticking pad and a preparation method thereof. The bactericidal emulsion pressure-sensitive adhesive at least comprises 1100 parts by weight of acrylic ester monomer 900-; the surfactant comprises a quaternary ammonium salt surfactant. The dust sticking pad provided by the invention has good sterilization and antibacterial effects and excellent dust sticking effect, and by adding the quaternary ammonium salt surfactant as an emulsifier, the sterilization effect is improved, the reaction stability is better, the comprehensive performance of the formed pressure-sensitive adhesive is good, the interface adhesion and the peeling strength of the pressure-sensitive adhesive are increased, and the unwinding force of the dust sticking pad is 0.8-1.3N and the 180-degree peeling force is 1.5-5.5N.
Description
Technical Field
The invention relates to the technical field of dust sticking pads, in particular to a bactericidal emulsion pressure-sensitive adhesive, a dust sticking pad and a preparation method thereof.
Background
The dust-sticking pad is also called dust-sticking floor glue, is mainly suitable for being stuck at an entrance of a clean space and a buffer area, can effectively stick and remove dust on soles and wheels, and furthest reduces the influence of the dust on the quality of the clean environment, thereby achieving the effect of simple dust removal and solving the problem that the dust cannot be completely removed by other ground mats without expansion.
At present, the relatively mature antibacterial and bactericidal dust-binding pad in the market adopts the conventional anionic or anionic nonionic system acrylate emulsion as dust-binding pressure-sensitive adhesive, and the acrylate emulsion has no any antibacterial and bactericidal effect.
Disclosure of Invention
In order to solve the technical problem, the first aspect of the invention provides a bactericidal emulsion pressure-sensitive adhesive, which at least comprises 1100 parts by weight of acrylate monomers, 0.2-2 parts by weight of molecular weight regulators, 10-80 parts by weight of surfactants, 0.01-0.05 part by weight of initiators and 1400 parts by weight of deionized water; the surfactant comprises a quaternary ammonium salt surfactant.
As a preferable technical scheme, the acrylate monomer comprises one or more of hydroxyl acrylate, amino acrylate and epoxy acrylate.
As a preferable technical scheme, the hydroxyl acrylic ester is selected from one or more of hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, 3-hydroxypropyl acrylate and 4-hydroxybutyl acrylate.
As a preferred embodiment, the epoxy group-containing acrylate is glycidyl methacrylate and/or glycidyl acrylate.
As a preferable technical scheme, the quaternary ammonium salt surfactant is selected from one or more of 1227, 1231, 1427, 1627, 1629, 1631, 1831, D1821, CAB-35, BS-12 and OB-2.
As a preferable technical scheme, the surfactant also comprises polyoxyethylene ether with EO number of 8-30.
As a preferable technical scheme, the bactericidal emulsion pressure-sensitive adhesive further comprises 1-5 parts by weight of N-methylolacrylamide and 5-20 parts by weight of a treating agent.
As a preferable technical scheme, the mass ratio of the N-methylolacrylamide to the epoxy-containing acrylate is 1: (1-4).
In a second aspect, the invention provides a dust-binding mat comprising the bactericidal emulsion pressure-sensitive adhesive.
The third aspect of the invention provides a preparation method of a dust-sticking mat containing the bactericidal emulsion pressure-sensitive adhesive, which comprises the following steps:
s1: preparing a dust sticking film: uniformly mixing high-pressure polyethylene, linear polyethylene, high-density polyethylene and medium-density polyethylene, and extruding and blowing a film to obtain a dust sticking film; preferably, the high-pressure polyethylene is LDPE2420H, the linear polyethylene is LLDPE1820, the high-density polyethylene is HDPE3355F, and the medium-density polyethylene is FB 2310;
s2: carrying out corona treatment on the outer layer of the dust sticking film;
s3: preparing a bactericidal emulsion pressure-sensitive adhesive;
s4: gluing;
s5: and rolling and cutting to obtain the dust sticking mat.
Has the advantages that: the dust sticking pad provided by the invention has good sterilization and antibiosis effects, meets the GB/T31402-2015 standard, and has stable sterilization and antibiosis effects; meanwhile, the dust-sticking mat has an excellent dust-sticking effect, and by adding the quaternary ammonium salt surfactant as an emulsifier, the bactericidal effect is improved, the reaction stability is better, the comprehensive performance of the formed pressure-sensitive adhesive is good, the interface adhesion and the peeling strength of the pressure-sensitive adhesive are increased, and the unwinding force of the dust-sticking mat is 0.8-1.3N and the 180-degree peeling force is 1.5-5.5N.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.
In order to solve the technical problem, the first aspect of the invention provides a bactericidal emulsion pressure-sensitive adhesive, which at least comprises, by weight, 900-1100 parts of acrylate monomers, 0.2-2 parts of molecular weight regulators, 10-80 parts of surfactants, 0.01-0.05 part of initiators and 1200-1400 parts of deionized water.
In one embodiment, the bactericidal emulsion pressure-sensitive adhesive at least comprises, by weight, 1000 parts of acrylic monomer 900-.
In a preferred embodiment, the bactericidal emulsion pressure-sensitive adhesive at least comprises 950 parts of acrylate monomers, 0.6 part of molecular weight regulator, 30 parts of surfactant, 0.03 part of initiator and 1300 parts of deionized water in parts by weight.
Acrylic ester monomer
In one embodiment, the acrylate monomer comprises one or more of hydroxyl acrylate, amino acrylate, and epoxy-containing acrylate; preferably, the acrylate monomer includes hydroxyl acrylate, amino acrylate, and epoxy acrylate.
In one embodiment, the hydroxyl-based acrylate is selected from one or more of hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, 3-hydroxypropyl acrylate, 4-hydroxybutyl acrylate; preferably, the hydroxyl acrylate is hydroxyethyl acrylate.
In the invention, the hydroxyethyl acrylate is colorless liquid, is dissolved in a common organic solvent and is miscible with water. The copolymer can be used as fiber treating agent, thermosetting coating, and high-bonding-strength adhesiveThe polymer composition is used as a thickener, a copolymer with acrylamide can be used as a substitute for floor wax, and a copolymer with divinylbenzene can be used as an ion exchange resin. CAS number 818-61-1, formula C5H8O3。
In one embodiment, the hydroxyethyl acrylate is present in an amount of 2.5 wt% or less of the total monomer mass; preferably, the content of the hydroxyethyl acrylate is 1.7 to 2.2 weight percent of the total monomer mass; more preferably, the hydroxyethyl acrylate content is 2 wt% of the total monomer mass.
The hydroxyethyl acrylate has polar groups, and the adhesion and cohesion of the pressure-sensitive adhesive can be obviously improved when the content is increased in research, but the inventor unexpectedly finds that the hydroxyethyl acrylate is also one of the reasons for causing the system to be unstable and easy to gel, probably because the crosslinked polymer has a large number of active sites, is easy to associate with water molecules and is easy to branch, but the content can be controlled to be less than 2.5 wt% of the total monomer mass in terms of cost and reaction activity, and further has the following ratio of 1: (2.2-5) after the addition, the formation of gel can be avoided; the reason for this is probably that the polymerization activities of the N-methylol acrylamide, the glycidyl methacrylate and the hydroxyethyl acrylate are equivalent, the content of the polar group is increased with the addition of the N-methylol acrylamide, the glycidyl methacrylate and the hydroxyethyl acrylate, but the basic molecular weight change is not large, the crosslinking effect of the N-methylol acrylamide, the glycidyl methacrylate and the hydroxyethyl acrylate and the migration effect of different polar chain segments of the three compounds on the polymer chain segment are further utilized to reach balance, so that the pressure-sensitive adhesive is converted from a linear structure to a three-dimensional structure, and the viscosity is not obviously changed while the interface adhesion and the peel strength are increased.
In the invention, the total monomers comprise acrylate monomers and N-methylolacrylamide.
In one embodiment, the amino acrylate is a branched amino acrylate having 6 to 10 carbon atoms.
In the present invention, the amino acrylate having 6 to 10 carbon atoms and a branched chain includes, but is not limited to, dimethylaminoethyl methacrylate.
In the invention, the molecular formula of the dimethylaminoethyl methacrylate is C8H15NO2The CAS number is 2867-47-2, the liquid is colorless or light yellow transparent liquid, can be mutually dissolved with water and various organic solvents such as ester, ketone, alcohol, ether, hydrocarbon, chlorohydrocarbon and the like, has amine smell, and the dimethylaminoethyl methacrylate is amine-basic, contains tertiary amino, ester group and unsaturated double bond in molecules, can generate salt with acid, and reacts with methylating agents such as methyl chloride and the like to generate quaternary ammonium salt. Hydrolysis, transesterification and the like of the ester group can occur. The unsaturated double bond can generate a series of reactions such as addition, polymerization, copolymerization and the like.
In one embodiment, the epoxy-containing acrylate is glycidyl methacrylate and/or glycidyl acrylate; preferably, the epoxy-containing acrylate is glycidyl methacrylate.
In the present invention, the glycidyl methacrylate has the formula of C7H10O3CAS number 106-91-2, which has two functional groups, an active vinyl group and an ionically reactive epoxy group, in the molecule, can be polymerized in a functional group manner and also in an ionic reaction manner.
In one embodiment, the acrylate monomer further comprises acrylate with 10-12 carbon atoms, acrylate with 6-8 carbon atoms and methyl methacrylate.
In the invention, the methyl methacrylate, an important chemical raw material, is a monomer for producing transparent plastic polymethyl methacrylate (polymethyl methacrylate, PMMA) with a chemical formula C5H8O2CAS number 80-62-6.
In the present invention, the acrylic ester having 10 to 12 carbon atoms includes, but is not limited to, isooctyl acrylate.
In the invention, the isooctyl acrylate has a molecular formula C11H20O2. The soft monomer is mainly used for manufacturing acrylate solvent type and emulsion type pressure sensitive adhesives. Also used as a main monomer for producing the microspheric pressure-sensitive adhesive for notebooks. Also can be used for manufacturing products such as coating, plastic modifier, paper making and leather processing aid, textile finishing agent, and the like. It can be used for processing synthetic fiber fabric and used as adhesive (anti-wound pressure-sensitive adhesive). CAS number: 103-11-7.
In the present invention, the acrylic ester having 6 to 8 carbon atoms includes, but is not limited to, butyl acrylate.
In the invention, the butyl acrylate is colorless transparent liquid, is insoluble in water and can be dissolved in ethanol and ether. Storing in a cool and ventilated storehouse. Away from the fire and heat source. The storage temperature should not exceed 37 ℃. It is not suitable for mass storage or long-term storage. Acrylic acid and esters thereof are widely applied in industry, and are used for manufacturing soft monomers of acrylate solvent type and emulsion type adhesives, can be homopolymerized, copolymerized and graft copolymerized, and high polymer monomers are used as organic synthesis intermediates. Chemical formula C7H12O2CAS number 141-32-2.
In one embodiment, the mass ratio of hydroxyethyl acrylate, dimethylaminoethyl methacrylate, glycidyl methacrylate, methyl methacrylate, isooctyl acrylate and butyl acrylate is (1.5-2.5): (2-3): 1: (5-8): (65-75): (15-25); preferably, the mass ratio of the hydroxyethyl acrylate, the dimethylaminoethyl methacrylate, the glycidyl methacrylate, the methyl methacrylate, the isooctyl acrylate and the butyl acrylate is 2: 2.5: 1: 6: 70: 20.
molecular weight regulator
In one embodiment, the molecular weight regulator is selected from one or more of n-dodecyl mercaptan, t-dodecyl mercaptan, isooctyl thioglycolate; preferably, the molecular weight regulator is n-dodecyl mercaptan.
In the present invention, the dodecyl mercaptan is colorless or pale yellow liquid. As polymerization regulators for synthetic rubbers, synthetic fibers, synthetic resins; it is also used for producing polyvinyl chloride stabilizers, drugs, insecticides, bactericides, detergents and the like. CAS number 112-55-0.
Surface active agent
In one embodiment, the surfactant comprises a quaternary ammonium salt surfactant.
In one embodiment, the quaternary ammonium salt surfactant is selected from one or more of 1227, 1231, 1427, 1627, 1629, 1631, 1831, D1821, CAB-35, BS-12, OB-2; preferably, the quaternary ammonium salt surfactant is 1227 or 1627.
In the invention, the quaternary ammonium salt surfactant 1227 is purchased from Nanjing Tianshi blue Shield Biotech Co., Ltd; the quaternary ammonium surfactant 1627 is purchased from ZiboWatson environmental protection technology, Inc.
In one embodiment, the surfactant further comprises a polyoxyethylene ether having an EO number of 8 to 30.
In one embodiment, the polyoxyethylene ether is fatty alcohol polyoxyethylene ether or alkylphenol polyoxyethylene ether; preferably, the polyoxyethylene ether is fatty alcohol-polyoxyethylene ether.
In one embodiment, the surfactant further comprises a fatty alcohol polyoxyethylene ether having an EO number of 8 to 30; preferably, the surfactant further comprises fatty alcohol-polyoxyethylene ether with EO number of 8-30.
In one embodiment, the fatty alcohol polyoxyethylene ether with an EO number of 8 to 30 has a pH of 5 to 7.
In one embodiment, the fatty alcohol polyoxyethylene ether with an EO number of 8 to 30 has a carbon number of 30 to 32; preferably, the fatty alcohol-polyoxyethylene ether with the EO number of 8-30 is AEO-9, and the CAS number is 68439-50-9.
In the invention, the molecular formula of AEO-9 is C12-14H25-29O(C2H4O)9The product has EO value of 9, is an adduct of natural fatty alcohol and ethylene oxide, and can be used as a nonionic surfactant for emulsion, cream and shampoo cosmetics. Has excellent water solubility, and can be used for preparing oil-in-water emulsion. In addition, can also useUsed as an antistatic agent. Is hydrophilic emulsifier, can enhance the solubility of some substances in water, and can be used as emulsifier for preparing O/W type emulsion. Has good emulsifying, decontaminating, cleaning and other performances, and can be widely used for preparing civil detergents, industrial emulsifiers, metal cleaning agents and the like.
In the present invention, the EO number refers to the ethylene oxide number.
In one embodiment, the quaternary ammonium salt surfactant 1227 or quaternary ammonium salt surfactant 1627, AEO-9 is present in a mass ratio of (1.5-2.5): 1; preferably, the mass ratio of the quaternary ammonium salt surfactant 1227 or the quaternary ammonium salt surfactant 1627 to the AEO-9 is 2: 1.
the inventor adds quaternary ammonium salt surfactant as emulsifier in the research, which has better sterilization effect than common emulsifier, and finds that the emulsion stability is poor when the quaternary ammonium salt 1227 or 1627 is used alone in the research; the inventor unexpectedly finds that the pressure-sensitive adhesive obtained by compounding the quaternary ammonium salt 1227 or 1627 with polyoxyethylene ether has better comprehensive performance, and speculates that the micelle surface formed by the quaternary ammonium salt 1227 or 1627 has positive charges, while the same cationic initiator is not easy to enter micelles due to the strong polar group when in use, and the quaternary ammonium salt can inhibit the cationic initiator from entering the micelles to form seed emulsion; however, polyoxyethylene ether with EO number of 8-30 is adopted, and the two substances alternately exist on the surface of the micelle at the same time, so that the distance of the quaternary ammonium salt molecules is increased, and the electrostatic tension on the surface of the micelle is greatly reduced by the cooperation of the polyoxyethylene ether and the quaternary ammonium salt molecules, so that the reaction stability is better, and the comprehensive performance of the formed pressure-sensitive adhesive is good.
Initiator
In one embodiment, the initiator is selected from one or more of benzoyl peroxide, lauroyl peroxide, cumene hydroperoxide, t-butyl hydroperoxide, di-t-butyl peroxide, dicumyl peroxide, t-butyl peroxybenzoate, t-butyl peroxypivalate, methyl ethyl ketone peroxide, cyclohexanone peroxide, diisopropyl peroxydicarbonate, dicyclohexyl peroxydicarbonate, azobisisobutyronitrile, azobisisoheptonitrile, dimethyl azobisisobutyrate, azobisisopropylimidazoline hydrochloride, azoamidine-based initiator V50; preferably, the initiator is dimethyl azodiisobutyrate.
In the invention, the azodiisobutyrate dimethyl ester is an oil-soluble azo initiator, does not contain cyano, and is widely applied. Molecular formula C10H18N2O4CAS number 2589-57-3. Used as a polymer free radical initiator, such as the initiation of polymer polyol POP. Dimethyl azodiisobutyrate has unique advantages as an azo polymer initiator: the initiation activity is moderate, and the polymerization reaction is easy to control. The obtained product has low viscosity, less residual monomers, stability in the storage and transportation process, no layering, improved product conversion rate by about 1 percent, and effectively reduced comprehensive cost.
In one embodiment, the bactericidal emulsion pressure-sensitive adhesive further comprises 1-5 parts of N-methylolacrylamide and 5-20 parts of a treating agent by weight.
In a preferred embodiment, the bactericidal emulsion pressure-sensitive adhesive further comprises 2-4 parts of N-methylolacrylamide and 6-10 parts of a treating agent by weight.
In a more preferred embodiment, the bactericidal emulsion pressure-sensitive adhesive further comprises 3 parts of N-methylolacrylamide and 8 parts of a treating agent by weight.
N-methylolacrylamide
In the invention, the N-methylolacrylamide has a molecular formula C4H7NO2CAS No. 924-42-5, N-methylolacrylamide is a white crystalline powder. Is very soluble in water, 116 g of water can be dissolved in 100 g of water at 20 ℃, the water can be dissolved in common hydrophilic solvents, and fatty acid esters, acrylic acid and methacrylic acid esters have considerable solubility when heated, but are hardly soluble in hydrophobic solvents such as hydrocarbon, halogenated hydrocarbon and the like. Can be used as a cross-linking agent and widely used for fiber modified resin, processing dye, plastic adhesive, soil stabilizer and the like; the product has double bonds conjugated with carbonyl and highly reactive hydroxymethyl in the molecule,the crosslinking monomer is widely used in modification of fiber, processing of resin, adhesive, treating agent for paper, leather and metal surface, soil improver, etc. Crosslinking of linear polymers is most effective because of the polymeric vinyl groups and the condensation methylol groups contained in the molecular structure. If copolymerized with an acrylate monomer, the methylol group is introduced and can be crosslinked by heating alone.
In one embodiment, the mass ratio of N-methylolacrylamide to glycidyl methacrylate is 1: (2.2-5); preferably, the mass ratio of the N-methylolacrylamide to the glycidyl methacrylate is 1: 3.1.
in the research, the inventor finds that the added N-methylol acrylamide and glycidyl methacrylate have different effects on the pressure-sensitive adhesive, and as the use amount of the N-methylol acrylamide and the glycidyl methacrylate is increased, the introduced polar groups are more, the glass transition temperature of the polymer is easily increased too much, and the pressure-sensitive adhesive is easily embrittled, and when the appropriate use amount is adopted, the optimal mass ratio range is found in the result to be 1: (2.2-5) can be slightly crosslinked into a network structure, so that the formed chemical bond replaces physical action and improves the strength of the pressure-sensitive adhesive, and experiments prove that the pressure-sensitive adhesive is just in an optimal state in a better range, so that the crosslinking number and the radical distribution in the system are uniform.
Treating agent
In one embodiment, the treatment agent comprises a defoamer, a non-ionic wetting agent, a biocide.
In one embodiment, the mass ratio of the defoaming agent to the nonionic wetting agent to the bactericide is (0.1-0.5): 1: (0.2-0.8); preferably, the mass ratio of the defoaming agent to the nonionic wetting agent to the bactericide is (0.2-0.4): 1: (0.4-0.6); more preferably, the mass ratio of the defoaming agent to the nonionic wetting agent to the bactericide is 0.3: 1: 0.5.
in one embodiment, the DEFOAMER is selected from one or more of DISPELAIR CF 246 DEFOAMER, SN-DEFOAMER 154 DEFOAMER, FOAMASTER 2380 DEFOAMER, Pasteur WBA DEFOAMER, Solvay 691 DEFOAMER, Ashland 4201 DEFOAMER; preferably, the defoamer is a basf WBA defoamer, having a WBA/8034A designation, purchased from heshengyuan chemical company, yoshan.
In one embodiment, the non-ionic wetting agent is selected from one or more of AntaroxBL-225, AntaroxBL240/W, AntaroxL-61, AntaroxL-62, AntaroxL-64, SoprophorBsu, Igepal CO-897, Igepal CO-430, Igepal CO-630, Igepal CO-887, Igepal CO-8920Z, Igepal CO-997; preferably, the non-ionic wetting agent is AntaroxBL-225, and the AntaroxBL-225 is an ethoxy-propoxylated C8-C10 fatty alcohol, purchased from Rapid commercial Co., Ltd, Guangzhou.
In one embodiment, the bactericide is selected from one or more of nano-silver, aloe isatis root and kasong; preferably, the bactericide is cason.
In the present invention, the cason is a mixture of 2-methyl-4-isothiazolin-3-one (MI) and 2-methyl-5-chloro-4-isothiazolin-3-one (CMI) and inorganic salt stabilizer, usually CMI: MI is 3: 1, is an excellent bactericide, is commonly used in cosmetics, shampoos and conditioners, and is a preservative for inhibiting the growth of microorganisms. It has good inhibiting effect on saccharomycetes, fungi, gram bacteria, heterotrophic bacteria, algae and the like, and is widely applied to sterilization and anticorrosion treatment in the fields of spinning, papermaking, oil refining, cosmetics, cleaning agents, oilfield flooding, sewage treatment and the like.
In one embodiment, the preparation method of the bactericidal emulsion pressure-sensitive adhesive comprises the following steps:
(1) uniformly mixing an acrylate monomer, N-methylolacrylamide, a molecular weight regulator, a surfactant and deionized water to obtain an emulsion;
(2) heating a reaction kettle to 80 ℃, adding 6 wt% of the emulsion obtained in the step (1) into the reaction kettle, then adding an initiator, polymerizing for half an hour to serve as seeds, then dropwise adding the rest of the emulsion obtained in the step (1) into the reaction kettle, dripping for 4 hours, preserving heat for 1 hour, cooling to 45 ℃, adding a treating agent, stirring, adding glacial acetic acid to adjust the pH value to 5-6, stirring to obtain a glue solution, and preparing the glue to obtain the bactericidal emulsion pressure-sensitive adhesive.
In a second aspect, the invention provides a dust-binding mat comprising the bactericidal emulsion pressure-sensitive adhesive.
The third aspect of the invention provides a preparation method of a dust-sticking mat containing the bactericidal emulsion pressure-sensitive adhesive, which comprises the following steps:
s1: preparing a dust sticking film: uniformly mixing high-pressure polyethylene, linear polyethylene, high-density polyethylene and medium-density polyethylene, and extruding and blowing a film to obtain a dust sticking film; preferably, the high-pressure polyethylene is LDPE2420H, the linear polyethylene is LLDPE1820, the high-density polyethylene is HDPE3355F, and the medium-density polyethylene is FB 2310;
s2: carrying out corona treatment on the outer layer of the dust sticking film;
s3: preparing a bactericidal emulsion pressure-sensitive adhesive;
s4: gluing;
s5: and rolling and cutting to obtain the dust sticking mat.
In one embodiment, the method for preparing the dust-binding mat containing the bactericidal emulsion pressure-sensitive adhesive comprises the following steps:
s1: preparing a dust sticking film: mixing high-pressure polyethylene, linear polyethylene, high-density polyethylene and medium-density polyethylene according to the weight ratio of 11: 2: 2: 22, uniformly mixing, and then extruding and blowing the film to prepare a dust-sticking film, wherein the extrusion temperature of a screw of an extruder is 160 ℃, and the extrusion time is 29 min;
s2: carrying out corona treatment on the outer layer of the dust sticking film;
s3: preparing a bactericidal emulsion pressure-sensitive adhesive;
s4: gluing: uniformly coating the pressure-sensitive adhesive on the outer layer of the dust-sticking film, and drying at 94 ℃ for 50 min;
s5: and rolling and cutting to obtain the dust sticking mat.
In one embodiment, the high pressure polyethylene is LDPE2420H, purchased from basf, yangzi.
In one embodiment, the linear polyethylene is LLDPE1820, purchased from the raisin.
In one embodiment, the high density polyethylene is HDPE3355F, purchased from thailand PTT.
In one embodiment, the medium density polyethylene is FB2310, purchased from bosch (northern european chemical).
In one embodiment, the weight ratio of LDPE2420H, LLDPE1820, HDPE3355F, HDPE3355F is 11: 2: 2: 22.
the present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Examples
Example 1
Embodiment 1 provides a bactericidal emulsion pressure-sensitive adhesive, which comprises the following components in parts by weight: 900 parts of acrylate monomers, 0.5 part of molecular weight regulator, 20 parts of surfactant, 0.02 part of initiator, 2 parts of N-methylolacrylamide, 6 parts of treating agent and 1200 parts of deionized water;
the acrylate monomer is a mixture of hydroxyethyl acrylate, dimethylaminoethyl methacrylate, glycidyl methacrylate, methyl methacrylate, isooctyl acrylate and butyl acrylate; the mass ratio of the hydroxyethyl acrylate to the dimethylaminoethyl methacrylate to the glycidyl methacrylate to the methyl methacrylate to the isooctyl acrylate to the butyl acrylate is 1.5: 2: 1: 5: 65: 15;
the molecular weight regulator is n-dodecyl mercaptan;
the surfactant is a mixture of quaternary ammonium salt surfactant 1227 and AEO-9; the mass ratio of the quaternary ammonium salt surfactant 1227 to the AEO-9 is 2.5: 1; the quaternary ammonium salt surfactant 1227 is purchased from Nanjing Tianshi blue Shield Biotech Co., Ltd;
the initiator is dimethyl azodiisobutyrate;
the treating agent comprises a defoaming agent, a nonionic wetting agent and a bactericide; the mass ratio of the defoaming agent to the nonionic wetting agent to the bactericide is 0.2: 1: 0.4; the defoamer is a Bassfu WBA defoamer with a WBA/8034A brand and is purchased from Synsheng chemical Co., Ltd, in Foshan; the non-ionic wetting agent is AntaroxBL-225, and the AntaroxBL-225 is an ethoxy-propoxylated C8-C10 fatty alcohol, purchased from fast commercial Co., Ltd, Guangzhou; the bactericide is kasong;
the preparation method of the bactericidal emulsion pressure-sensitive adhesive comprises the following steps:
(1) uniformly mixing an acrylate monomer, N-methylolacrylamide, a molecular weight regulator, a surfactant and deionized water to obtain an emulsion;
(2) heating a reaction kettle to 80 ℃, adding 6 wt% of the emulsion obtained in the step (1) into the reaction kettle, then adding an initiator, polymerizing for half an hour to serve as seeds, then dropwise adding the rest of the emulsion obtained in the step (1) into the reaction kettle, dripping for 4 hours, preserving heat for 1 hour, cooling to 45 ℃, adding a treating agent, stirring, adding glacial acetic acid to adjust the pH value to 5-6, stirring to obtain a glue solution, and preparing the glue to obtain the bactericidal emulsion pressure-sensitive adhesive.
A dust-sticking mat containing bactericidal emulsion pressure-sensitive adhesive.
The preparation method of the dust sticking pad containing the bactericidal emulsion pressure-sensitive adhesive comprises the following steps:
s1: preparing a dust sticking film: mixing high-pressure polyethylene, linear polyethylene, high-density polyethylene and medium-density polyethylene according to the weight ratio of 11: 2: 2: 22, uniformly mixing, and then extruding and blowing the film to prepare a dust-sticking film, wherein the extrusion temperature of a screw of an extruder is 160 ℃, and the extrusion time is 29 min; the high pressure polyethylene is LDPE2420H, purchased from Yangzi Basff; the linear polyethylene is LLDPE1820 purchased from a raisin; the high density polyethylene is HDPE3355F, purchased from Thailand PTT; the medium density polyethylene is FB2310, purchased from Bolu (northern Europe chemical industry);
s2: carrying out corona treatment on the outer layer of the dust sticking film;
s3: preparing a bactericidal emulsion pressure-sensitive adhesive;
s4: gluing: uniformly coating the pressure-sensitive adhesive on the outer layer of the dust-sticking film, and drying at 94 ℃ for 50 min;
s5: and rolling and cutting to obtain the dust sticking mat.
Example 2
Embodiment 2 provides a bactericidal emulsion pressure-sensitive adhesive, which comprises the following components in parts by weight: 1000 parts of acrylate monomer, 1 part of molecular weight regulator, 40 parts of surfactant, 0.04 part of initiator, 4 parts of N-methylolacrylamide, 10 parts of treating agent and 1400 parts of deionized water;
the acrylate monomer is the same as that in example 1, except that the mass ratio of hydroxyethyl acrylate, dimethylaminoethyl methacrylate, glycidyl methacrylate, methyl methacrylate, isooctyl acrylate and butyl acrylate is 2.5: 3: 1: 8: 75: 25;
the molecular weight regulator is n-dodecyl mercaptan;
the surfactant is the same as that in example 1, except that the mass ratio of the quaternary ammonium salt surfactant 1227 to the AEO-9 is 2.5: 1;
the initiator is dimethyl azodiisobutyrate;
the treating agent is the same as the treating agent in example 1, except that the mass ratio of the defoaming agent to the nonionic wetting agent to the bactericide is 0.4: 1: 0.6;
the preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 3
Embodiment 3 provides a bactericidal emulsion pressure-sensitive adhesive, which comprises the following components in parts by weight: 950 parts of acrylate monomers, 0.6 part of molecular weight regulator, 30 parts of surfactant, 0.03 part of initiator, 3 parts of N-methylolacrylamide, 8 parts of treating agent and 1300 parts of deionized water;
the acrylate monomer is the same as that in example 1, except that the mass ratio of hydroxyethyl acrylate, dimethylaminoethyl methacrylate, glycidyl methacrylate, methyl methacrylate, isooctyl acrylate and butyl acrylate is 2: 2.5: 1: 6: 70: 20;
the molecular weight regulator is n-dodecyl mercaptan;
the surfactant is the same as that in example 1, except that the mass ratio of the quaternary ammonium salt surfactant 1227 to the AEO-9 is 2: 1;
the initiator is dimethyl azodiisobutyrate;
the treating agent is the same as the treating agent in example 1, except that the mass ratio of the defoaming agent to the nonionic wetting agent to the bactericide is 0.3: 1: 0.5.
the preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 4
Embodiment 4 provides a bactericidal emulsion pressure-sensitive adhesive, which comprises the following components in parts by weight: 950 parts of acrylate monomers, 0.6 part of molecular weight regulator, 30 parts of surfactant, 0.03 part of initiator, 3 parts of N-methylolacrylamide, 8 parts of treating agent and 1300 parts of deionized water;
the acrylate monomers are the same as in example 3;
the molecular weight regulator is n-dodecyl mercaptan;
the surfactant is a mixture of quaternary ammonium salt surfactant 1627 and AEO-9; the mass ratio of the quaternary ammonium salt surfactant 1627 to the AEO-9 is 2: 1; the quaternary ammonium salt surfactant 1627 is purchased from ZiboWatson environmental protection science and technology Co;
the initiator is dimethyl azodiisobutyrate;
the treatment was the same as in example 3.
The preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 5
Example 5 provides a bactericidal emulsion pressure sensitive adhesive similar to example 3 except that the hydroxyethyl acrylate is present in an amount of 3.5 weight percent based on the total monomer mass.
The preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 6
Example 6 provides a germicidal emulsion pressure sensitive adhesive similar to example 3, except that no N-methylolacrylamide is present.
The preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 7
Example 7 provides a germicidal emulsion pressure sensitive adhesive similar to example 3, except that there is no glycidyl methacrylate.
The preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 8
Example 8 provides a germicidal emulsion pressure sensitive adhesive similar to example 3 except that the N-methylolacrylamide is replaced with N, N' -methylenebisacrylamide (CAS number 110-26-9).
The preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 9
Example 9 provides a germicidal emulsion pressure sensitive adhesive similar to example 3, except that 10 parts of the N-methylolacrylamide is used.
The preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 10
Example 10 provides a germicidal emulsion pressure sensitive adhesive similar to example 3, except that 20 parts of the glycidyl methacrylate is used.
The preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 11
Example 11 provides a germicidal emulsion pressure sensitive adhesive similar to example 4, except that there is no AEO-9.
The preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Example 12
Example 12 provides a germicidal emulsion pressure sensitive adhesive similar to example 4 except that the AEO-9 is replaced with AEO-7.
The preparation method of the bactericidal emulsion pressure-sensitive adhesive is the same as that of example 1.
A dust-binding mat containing a bactericidal emulsion pressure-sensitive adhesive and a preparation method thereof are the same as in example 1.
Performance testing
1.180 ° peel force: the 180 ° peel force of the dust-binding pads described in examples 1-12 was determined by the following specific test method:
the laboratory requirements are as follows: the laboratory temperature was maintained between 23 ℃ and 25 ℃ and the relative humidity was maintained within the range of 40% ± 15%.
Preparation of the experiment:
firstly, cleaning the working surface of the experimental plate by using alcohol, so that the surface of the experimental plate has no dust, adhesive residues and other impurities, and the experimental plate can not be contacted with the working surface by hands or other objects after being cleaned;
secondly, cutting a sample along a steel plate ruler by using a sampling cutter with the width of 25mm, and paying attention to the fact that the rubber surface cannot contact hands or other substances;
and thirdly, slightly peeling off the cut sample strips, paying attention to only one layer, putting the sample strips on an automatic rolling machine to manufacture the experimental sample strips, adjusting the speed of the automatic rolling machine to be 300mm/min, making a round trip for 3 times, placing the sample strips in the middle of an experimental plate, starting the automatic rolling machine, automatically operating the automatic rolling machine in the whole process, paying attention to the fact that obvious bubbles or sundries cannot exist at the joint of the sample strips and the experimental plate, and pressing three strips by using the method. Recording the time for each sample strip;
placing the experimental sample strips for 15 minutes in an environment meeting the requirements of a laboratory, wherein the sample strips pressed on the experimental plate cannot be contacted by hands or other objects in the process;
the experimental process comprises the following steps:
folding the free end of the sample strip placed for 15 minutes for 180 degrees, and stripping the combined part from the experimental plate for about 25mm to prepare an experimental plate assembly;
secondly, mounting the experiment board assembly on a tensile machine according to the operation requirements of the instrument according to the sequence of the manufacturing time to perform a peeling experiment;
taking the average value of three experiments as the final experiment result, wherein 2.1-2.5N is marked as A, 1.5-2.1N is not equal to 2.1N is marked as B, 2.5-5.5N is not equal to 2.5N is marked as C, more than 5.5N is marked as D, and less than 1.5N is marked as E, and the test results are shown in Table 1.
2. Unwinding force: the dust-binding pads described in examples 1 to 12 were attached to a test board at a laboratory constant temperature (25 ℃), and when peeled at a speed of 180 ° and 300mm/min, the unwinding force of the dust-binding pads described in examples 1 to 12 was measured using an intelligent single-stage tensile machine, and the specific test procedure was as follows:
preparing a double-layer dust-sticking mat with the length of 150mm +/-1 mm, the width of 25mm +/-1 mm and the thickness of 1.5-2.0mm as a test board;
wiping the test board with alcohol gauze;
thirdly, attaching the 150mm +/-1 mm double-layer or multi-layer dust-sticking pad of the sample to the test board;
rolling the sample adhered on the test board on the sample by using the self weight of 2000g +/-50 g of compression roller for three times;
placing the rolled sample in an environment with the laboratory temperature of 23 +/-1 ℃ and the humidity of 65 +/-2 ℃ for 30 minutes;
clamping one end of the placed sample test board at the lower end of the intelligent single-electron tensile machine, and stripping a layer of sticky mat film to clamp the other end of the intelligent single-electron tensile machine;
seventhly, forming an angle of 180 degrees at the beginning of the experiment, pulling upwards at a speed of 300mm/min, testing for three times, and taking an average value, wherein the uncoiling force is 0.95-1.05N and is recorded as A, the uncoiling force is 0.8-0.95N and is not equal to 0.95N and is recorded as B, the uncoiling force is 1.05-1.3N and is not equal to 1.05N and is recorded as C, the uncoiling force is more than 1.3N and is recorded as D, the uncoiling force is less than 0.8N and is recorded as E, and the test results are shown in Table 1.
3. Initial adhesion: the initial adhesive force of the dust-sticking mat described in examples 1-12 was measured by a rolling ball method initial adhesive force measuring instrument, and the specific test procedure was as follows:
the inclined plane rolling ball device is adjusted to a horizontal position, and the inclination angle of the inclined plate is adjusted to 30 degrees except for special provisions;
scrubbing the glass surface and two sides of the polyester film by using absorbent gauze dipped with a cleaning agent, and then wiping the glass surface and the two sides of the polyester film by using the gauze;
placing the steel ball wiped with the anti-rust oil into a container filled with a detergent for soaking for several minutes, taking out the steel ball, repeatedly cleaning and wiping the steel ball with a clean detergent and gauze, then wiping the steel ball with the clean gauze, and taking the steel ball with tools such as tweezers made of clean bamboo (wood and bone) and the like;
placing the adhesive tape sample on an inclined plate with the adhesive surface facing upwards, covering a polyester film on a specified position to serve as a rolling assisting section, wherein the rolling assisting section is smooth and free of defects such as bubbles and wrinkles, and the range of 100mm below the rolling assisting section is a testing section;
fixing the two sides of the rolling-assistant section and the lower end of the sample on the inclined plate by using adhesive tape, and if necessary, fixing the rolling-assistant section and the lower end of the sample along the edges of the two sides of the test section by using adhesive tape so as to enable the sample to be smoothly attached to the plate;
clamping the steel ball into a ball placing device by using tweezers, adjusting the front and rear positions of the ball placing device to enable the center of the steel ball to be positioned on the initial line of the rolling aid, and allowing a sample to be tested for multiple times before formal testing, but adjusting the left and right positions of the ball placing device to enable the rolling tracks of the steel ball to be misaligned; when the width of the sample is more than 25mm, taking a region with the width of 25mm in the center of the sample as an effective test region;
lightly hitting a piece placing device, and observing whether the rolled steel ball is stuck in the test section (the movement is stopped for less than 5 s); from big to small, taking steel balls with different ball numbers to test for proper times until finding the largest ball number steel ball which can be stuck in the test section; taking the maximum ball number steel ball and two balls with the same size and the same number connected with the maximum ball number steel ball, and respectively carrying out one-time test on the same sample to confirm the maximum ball number steel ball;
taking 3 samples, and carrying out a rolling ball test by using a maximum ball number steel ball; if a certain sample can not stick to the steel ball, the steel ball with the ball number smaller than that of the sample can be replaced to carry out one-time test, and if the sample can not stick to the steel ball, the test is carried out again; the test results are expressed by the ball number of the steel ball (in the steel balls stuck to 3 samples, if 3 are the maximum ball number steel balls or two are the maximum ball number steel balls and the ball number of the other is only smaller than the maximum ball number, the test results are expressed by the maximum ball number, and if one is the maximum ball number steel ball and the ball number of the other two is only smaller than the maximum ball number, the test results are expressed by the ball number of the steel ball which is only smaller than the maximum ball number), wherein the test ball number of 3 is marked as A, the test ball number of more than 3 is marked as B, the test ball number of less than 3 is marked as C, and the test results are shown in Table 1.
4. Permanent adhesion: the dust holding power of the dust-attached sheet described in examples 1 to 12 was expressed by the time at which the test piece was detached from the test plate when a weight (total mass of the load plate, the weight and the connecting pin of both was 1000 g. + -.10 g) was vertically suspended in the longitudinal direction of the pressure-sensitive adhesive tape attached to the adherend, and the specific test procedure was as follows:
scrubbing a test plate (the thickness of the test plate is 1.5-2.0mm, the width is 40-50 mm, and the length is 60-125 mm) and a loading plate (the material, the size and the working surface are required to be the same as those of the test plate) by using a scrubbing material (absorbent gauze) to dip a cleaning agent (cyclohexane), then carefully scrubbing the test plate by using clean gauze, and repeatedly cleaning for more than three times until the working surface of the plate is cleaned through visual inspection; after cleaning, the working surface of the plate cannot be contacted by hands or other objects;
adhering the sample to the middle parts of the test plate and the loading plate which are next to each other in parallel with the longitudinal direction of the plate under the conditions that the temperature is 23 +/-2 ℃ and the relative humidity is 65% +/-5%; rolling the sample with a roller (the roller is a steel wheel coated with rubber, the diameter of which is about 84mm (excluding rubber layer), and the width of which is about 45mm, the mass of the roller is 2000g +/-50 g), at a speed of about 300 mm/min; when the rolling is noticed, only the force generated by the mass of the compression roller can be applied to the sample; rolling for three times in a reciprocating manner; after the sample is pasted on the plate, the sample is placed for 20min under the conditions that the temperature is 23 +/-2 ℃ and the relative humidity is 65% +/-5%; then vertically fixing the test plate on a test frame, and lightly connecting the loading plate and the weight by using a pin; the whole test frame is placed in a test box which is adjusted to the required test environment, the test starting time is recorded, after the specified time is reached, the weight is removed, the time of the sample falling off from the test plate is recorded, 48h is not fallen off, the deformation is recorded as A, 48h is fallen off or deformed as B, 48h is not fallen off and the deformation is recorded as C, and the test results are shown in table 1.
TABLE 1
| 180 degree peel force | Unwinding force | Initial adhesion | Permanent adhesion | |
| Example 1 | B | B | C | A |
| Example 2 | C | C | B | A |
| Example 3 | A | A | A | A |
| Example 4 | A | A | A | A |
| Example 5 | C | C | B | A |
| Example 6 | E | E | C | C |
| Example 7 | E | E | C | C |
| Example 8 | B | B | C | B |
| Example 9 | C | D | B | C |
| Example 10 | C | D | B | C |
| Example 11 | B | B | C | A |
| Example 12 | B | B | C | A |
5. And (3) gel: the bactericidal emulsion pressure sensitive adhesives described in examples 1-12 were allowed to stand at 25 ℃ for 1 day and observed for the presence of gels, and the test results are shown in Table 2.
6. Stability: the bactericidal emulsion pressure sensitive adhesives described in examples 1-12 were allowed to stand at 60 ℃ for 7 days and observed for delamination, the test results are shown in Table 2.
TABLE 2
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (10)
1. The bactericidal emulsion pressure-sensitive adhesive is characterized by comprising, by weight, at least 900-1100 parts of acrylate monomers, 0.2-2 parts of molecular weight regulators, 10-80 parts of surfactants, 0.01-0.05 part of initiators and 1200-1400 parts of deionized water; the surfactant comprises a quaternary ammonium salt surfactant.
2. The bactericidal emulsion pressure-sensitive adhesive of claim 1, wherein the acrylate monomers include one or more of hydroxyl acrylates, amino acrylates, and epoxy-containing acrylates.
3. The bactericidal emulsion pressure-sensitive adhesive of claim 2, wherein the hydroxyl acrylate is selected from one or more of hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, 3-hydroxypropyl acrylate, and 4-hydroxybutyl acrylate.
4. The bactericidal emulsion pressure-sensitive adhesive of claim 2, wherein the epoxy-containing acrylate is glycidyl methacrylate and/or glycidyl acrylate.
5. The bactericidal emulsion pressure-sensitive adhesive of claim 1, wherein the quaternary ammonium salt surfactant is selected from one or more of 1227, 1231, 1427, 1627, 1629, 1631, 1831, D1821, CAB-35, BS-12 and OB-2.
6. The bactericidal emulsion pressure-sensitive adhesive of any one of claims 1-5 wherein the surfactant further comprises a polyoxyethylene ether having an EO number of 8 to 30.
7. The bactericidal emulsion pressure-sensitive adhesive of claim 2, wherein the bactericidal emulsion pressure-sensitive adhesive further comprises 1-5 parts by weight of N-methylolacrylamide and 5-20 parts by weight of a treating agent.
8. The bactericidal emulsion pressure-sensitive adhesive as claimed in claim 7, wherein the mass ratio of the N-methylolacrylamide to the epoxy-containing acrylate is 1: (1-4).
9. A dust-binding mat comprising the bactericidal emulsion pressure-sensitive adhesive of any one of claims 1-8.
10. A method for preparing a dust-binding mat containing the bactericidal emulsion pressure-sensitive adhesive according to any one of claims 1 to 8, comprising the steps of:
s1: preparing a dust sticking film: uniformly mixing high-pressure polyethylene, linear polyethylene, high-density polyethylene and medium-density polyethylene, and extruding and blowing a film to obtain a dust sticking film; preferably, the high-pressure polyethylene is LDPE2420H, the linear polyethylene is LLDPE1820, the high-density polyethylene is HDPE3355F, and the medium-density polyethylene is FB 2310;
s2: carrying out corona treatment on the outer layer of the dust sticking film;
s3: preparing a bactericidal emulsion pressure-sensitive adhesive;
s4: gluing;
s5: and rolling and cutting to obtain the dust sticking mat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854831.0A CN111909631B (en) | 2020-08-24 | 2020-08-24 | Bactericidal emulsion pressure-sensitive adhesive, dust-sticking pad and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854831.0A CN111909631B (en) | 2020-08-24 | 2020-08-24 | Bactericidal emulsion pressure-sensitive adhesive, dust-sticking pad and preparation method thereof |
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| Publication Number | Publication Date |
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| CN113122166A (en) * | 2021-04-19 | 2021-07-16 | 黑龙江大学 | Composite antibacterial pressure-sensitive adhesive composition and preparation method thereof |
| CN114621480A (en) * | 2021-03-25 | 2022-06-14 | 临沂天勤塑业有限公司 | Degradable dustproof cushion and preparation method thereof |
| CN114921200A (en) * | 2022-04-29 | 2022-08-19 | 深圳市中升薄膜材料有限公司 | Compound dust-binding adhesive, and components, preparation method and application thereof |
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| CN114921200A (en) * | 2022-04-29 | 2022-08-19 | 深圳市中升薄膜材料有限公司 | Compound dust-binding adhesive, and components, preparation method and application thereof |
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