CN109096947B - Pressure-sensitive adhesive - Google Patents
Pressure-sensitive adhesive Download PDFInfo
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- CN109096947B CN109096947B CN201810943339.3A CN201810943339A CN109096947B CN 109096947 B CN109096947 B CN 109096947B CN 201810943339 A CN201810943339 A CN 201810943339A CN 109096947 B CN109096947 B CN 109096947B
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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
- C09J103/00—Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
- C09J103/02—Starch; Degradation products thereof, e.g. dextrin
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a pressure-sensitive adhesive, and belongs to the technical field of pressure-sensitive adhesives. According to the invention, peach gum, humic acid, glutinous rice juice and the like are used for preparing the self-adhesive, wherein the humic acid is a mixture containing functional groups such as carboxyl, phenolic hydroxyl and the like, so that a weak acid environment effect can be provided, active groups such as carboxyl and aldehyde can play a bridging role in the bonding process, and the bonding strength is further improved; the invention takes the polyethylene glycol monomethyl ether with single functional group as a long suspension chain, introduces the polyurethane component prepared by the composite filler, reduces the microphase separation degree of the internal soft and hard sections, crushes the coconut shells, performs acid leaching and steam explosion, and performs fermentation with gelatin, casein, lactobacillus bulgaricus and the like, thereby improving the adhesion and toughness of the pressure-sensitive adhesive system. The invention solves the problem of poor adhesion and toughness of the conventional pressure-sensitive adhesive.
Description
Technical Field
the invention belongs to the technical field of pressure-sensitive adhesives, and particularly relates to a pressure-sensitive adhesive.
Background
The adhesive tape mainly comprises a substrate and a layer of adhesive coated on one or two surfaces of the substrate, and bonding is formed between adhesive molecules on the substrate and molecules on the surface of an article, so that the adhesive tape is only adhered on the surface of the article. The adhesive tape can be divided into high-temperature adhesive tape, pressure-sensitive adhesive tape, insulating adhesive tape, special adhesive tape, die-cutting adhesive tape and the like according to functions. The pressure-sensitive adhesive tape is a pressure-sensitive adhesive tape, is commonly called as a self-adhesive tape, and has the advantages of easy adhesion when using a small pressure, adhesion effect within a short time, difficult residue on an adhered article after peeling, re-correction when pasting wrong, basically no fading of the adhesive property of an adhesive surface after multiple use and the like, so the pressure-sensitive adhesive tape is widely applied to the industries of packaging, printing, automobiles, household appliances, electronics, medical treatment, aviation, construction, telecommunication equipment and the like.
however, the adhesiveness of the rubber-type pressure-sensitive adhesive on the PET substrate has been poor, and it is known that, in order to achieve a long fixing or protecting effect, not only the rubber-type pressure-sensitive adhesive is required to have good initial adhesion and cohesion, but also the rubber-type pressure-sensitive adhesive is required to have good peelability when peeled from the surface of the adhered article, i.e., not to remain on the surface of the adhered article, and therefore if the adhesiveness of the rubber-type pressure-sensitive adhesive on the PET substrate is poor, the peelability of the rubber-type pressure-sensitive adhesive is poor. In order to improve the stripping performance of the adhesive tape, in general, a PET substrate is subjected to corona treatment in advance, and then a rubber type pressure sensitive adhesive is coated on the PET substrate, although the rubber type pressure sensitive adhesive has good adhesive force to the PET substrate in a short time, after a period of storage, the adhesive force between the PET substrate and the rubber type pressure sensitive adhesive can still be greatly weakened, so that when the adhesive tape is stripped from the surface of an adhered article, more or less rubber type pressure sensitive adhesive remains on the surface of the adhered article, and the adhered article to be fixed or protected is polluted, therefore, the problem of poor adhesion of the adhesive type pressure sensitive adhesive on the PET substrate cannot be essentially solved by adopting a pre-corona treatment method obviously.
A novel high-efficiency pressure-sensitive adhesive composition is disclosed which consists of a phase-separated graft copolymer consisting of a backbone having pendant polymeric groups grafted thereto, such as polystyrene or polyacrylate or poly (meth) acrylate, various types of pressure-sensitive adhesives obtained by graft polymerization are used to improve their adhesive properties, however, the pressure-sensitive adhesives prepared by graft polymerization have a cross-linking density that does not meet the adhesive requirements of the pressure-sensitive adhesives, poor toughness, and extremely high production costs. Therefore, a pressure-sensitive adhesive with strong adhesion and toughness needs to be developed.
disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problems of poor adhesion and toughness of the conventional pressure-sensitive adhesive, the pressure-sensitive adhesive is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a pressure-sensitive adhesive comprises 7 ~ 15 parts of wetting agent, 0.1 ~ 0.4.4 parts of paraffin, 3 ~ 7 parts of naphthenic oil, 2 ~ 5 parts of antioxidant, 15 ~ 30 parts of self-made adhesive, 20 ~ 35 parts of composite filler and 12 ~ 20 parts of fermentation treatment product.
The preparation method of the composite filler comprises the following steps:
(1) Taking polyethylene glycol monomethyl ether at 100 ~ 110 ℃, carrying out vacuum-pumping drying treatment, introducing nitrogen for protection, adding acetic anhydride accounting for 12 ~ 20% of the mass of the polyethylene glycol monomethyl ether and pyridine accounting for 8 ~ 15% of the mass of the polyethylene glycol monomethyl ether, mixing, heating, stirring and reacting to obtain a premix, taking the premix, maleic anhydride and auxiliary agents according to the mass ratio of 10: 1: 1 ~ 3, mixing, stirring and reacting at 200 ~ 210 ℃, and discharging to obtain a base material;
(2) According to the mass parts, 30 ~ 50 parts of base material, 20 ~ 30 parts of styrene, 20 ~ 30 parts of water, 2 ~ 5 parts of initiator, 0.3 ~ 0.7.7 parts of stannous octoate, 8 ~ 15 parts of polydimethylsiloxane, 8 ~ 15 parts of mixed monomer and 4 ~ 8 parts of isocyanate are taken, the base material, the styrene, the isocyanate and the water are taken at 40 ~ 55 ℃ first, stirred and mixed, heated, added with the mixed monomer, the initiator, the polydimethylsiloxane and the stannous octoate and mixed, sheared and dispersed, heated, kept warm and kept stand to obtain the composite filler.
And (2) mixing the auxiliary agent in the step (1) with cottonseed oil and linoleic acid according to the mass ratio of 3: 1 ~ 2 to obtain the auxiliary agent.
The initiator in the step (2): any one of potassium persulfate, sodium persulfate and ammonium persulfate.
and (3) mixing acrylic acid, hydroxyalkyl acrylate and alkyl methacrylate according to the mass ratio of 1 ~ 3: 1: 1 to obtain the mixed monomer in the step (2).
The preparation method of the fermentation treatment substance comprises the steps of sequentially taking 8 ~ parts of pretreated coconut shell particles, 4 ~ parts of gelatin, 2 ~ parts of casein, 2 ~ parts of Bulgaria lactobacillus liquid and 300 ~ parts of water at 55 ~ ℃ according to parts by weight, mixing the pretreated coconut shell particles, the gelatin and the water, stirring, keeping the temperature and standing, heating, stirring, adding the casein and the Bulgaria lactobacillus liquid, sealing, shaking a table at 28 5932 ℃, carrying out shaking, carrying out fermentation culture to obtain a fermentation material, sterilizing the fermentation material to obtain a sterilized material, adjusting the pH value of the sterilized material, filtering, and carrying out vacuum concentration on filtrate to obtain the fermentation treatment substance.
and (3) taking coconut shells, crushing and sieving, adding HCl solution into the sieved particles according to the mass ratio of 1: 10 ~ 15, mixing and stirring, filtering, taking filter residues, drying, performing steam explosion to obtain a blasting material, and taking the blasting material for microwave treatment to obtain the pretreated coconut shell particles.
The self-made adhesive is prepared by adding urea and water into peach gum according to the mass ratio of 1: 1 ~ 3: 10 at 45 ~ 60 ℃, mixing and stirring, filtering, adding filter residue into absolute ethyl alcohol according to the mass ratio of 5: 0.1 ~ 0.3.3, mixing, adding zirconia ball grinding beads according to the ball material mass ratio of 20 ~ 30: 1, ball grinding to obtain ball grinding materials, adding glutinous rice juice and humic acid into the ball grinding materials according to the mass ratio of 1: 3 ~ 6: 2, mixing and stirring, and performing vacuum evaporation at 55 ~ 70 ℃ to obtain the self-made adhesive.
the antioxidant is prepared by mixing tert-butyl hydroquinone and pentaerythritol according to the mass ratio of 5 ~ 8: 1.
And the wetting agent is prepared by mixing cetyl trimethyl ammonium bromide and sodium laureth sulfate according to the mass ratio of 5: 1 ~ 3.
Compared with other methods, the method has the beneficial technical effects that:
(1) The invention uses peach gum, humic acid, glutinous rice juice and the like to prepare the self-adhesive, wherein the humic acid is a mixture containing functional groups such as carboxyl, phenolic hydroxyl and the like, can provide weak acidic environment, generate chelation with calcium ion and zinc ion in glutinous rice juice, enhance internal binding force, in addition, humic acid can combine with rich organic matters generated in fermentation treatment substances to achieve the effect of improving the interface compatibility of a pressure-sensitive adhesive system and adhesive paper, wherein active groups such as carboxyl and aldehyde group can play a bridging role in the bonding process, further improve the bonding performance of the product to the gummed paper, and generate micromolecular substances after the degradation of humic acid and peach gum, the adhesive can further penetrate into the inside of the micro-pores of the adhesive paper under the action of a wetting agent, and after the adhesive is combined with other components in a system, an adhesive nail structure is formed in the micro-pore structure, so that the bonding strength is further improved;
(2) The invention uses polyethylene glycol monomethyl ether with single functional group as long hanging chain, introduces into polyurethane component made of composite filler, reduces the degree of microphase separation of internal soft and hard segments, enhances the function of intermolecular hydrogen bond, enhances the internal coupling force of colloid, provides a main body frame with high toughness for viscous component and other components of the system so as to achieve the function of enhancing the adhesiveness and toughness of pressure-sensitive adhesive, crushes coconut shells, acid soaks, and steam explodes to decompose part of lignin and hemicellulose, treats water molecules with microwave to resonate and mix pentosan in the water molecules, then ferments with gelatin, casein, lactobacillus bulgaricus and the like to generate a large amount of organic matters, combines with self-made adhesive and naphthenic oil with good polyurethane compatibility, and can greatly improve the adhesiveness and toughness of the pressure-sensitive adhesive system.
Detailed Description
The self-made adhesive is prepared by adding urea and deionized water into peach gum at a mass ratio of 1: 1 ~ 3: 10 in a water bath of 45 ~ 60 ℃ for mixing, stirring at 400 ~ 600r/min for 25 ~ 50min, filtering, placing filter residues in a ball milling tank at a mass ratio of 5: 0.1 ~ 0.3.3, adding absolute ethyl alcohol for mixing, adding zirconia ball milling beads at a ball material mass ratio of 20 ~ 30: 1, ball milling at 300 ~ 500r/min for 30 ~ 50min to obtain ball milling materials, adding glutinous rice juice and humic acid into the ball milling materials at a ball milling material mass ratio of 1: 3 ~ 6: 2 for mixing, stirring and mixing at a rotating speed of 300 ~ 500r/min for 1 ~ 3h, vacuumizing and evaporating at 55 ~ 70 ℃ to 30 ~ 45% of the original volume, and obtaining the self-made adhesive.
And (3) mixing cetyl trimethyl ammonium bromide and sodium laureth sulfate according to the mass ratio of 5: 1 ~ 3 to obtain the wetting agent.
And (3) mixing the tert-butyl hydroquinone and the pentaerythritol according to the mass ratio of 5 ~ 8: 1 to obtain the antioxidant.
initiator: any one of potassium persulfate, sodium persulfate and ammonium persulfate.
Mixing acrylic acid, hydroxyalkyl acrylate and alkyl methacrylate according to the mass ratio of 1 ~ 3: 1: 1 to obtain the mixed monomer.
And mixing the auxiliary agent with cottonseed oil and linoleic acid according to the mass ratio of 3: 1 ~ 2 to obtain the auxiliary agent.
And (2) pretreating coconut shell particles, namely crushing coconut shells in a crusher, sieving the crushed coconut shells with a 80-mesh sieve, adding HCl solution with the concentration of 0.1mol/L into the sieved particles according to the mass ratio of 1: 10 ~ 15 to mix, stirring the mixture for 20 ~ 45min at 400 ~ 600r/min, filtering the mixture, naturally drying filter residues, performing steam explosion in a steam explosion device at the steam explosion pressure of 0.1 ~ 1.6.6 MPa and the cylinder temperature of 10 ~ 350 ℃ and the material-water mass ratio of 1: 20 ~ 30 to obtain an explosion material, and performing 400W microwave treatment on the explosion material for 10 ~ 15min to obtain the pretreated coconut shell particles.
The preparation method of the composite filler comprises the following steps:
(1) Taking polyethylene glycol monomethyl ether at 100 ~ 110 ℃, vacuumizing to 0.3 ~ 0.7.7 kPa for dehydration and drying treatment for 3 ~ 5h, transferring to a 40 ~ 60 ℃ reaction kettle, introducing nitrogen for protection, adding acetic anhydride accounting for 12 ~ 20% of the mass of the polyethylene glycol monomethyl ether and pyridine accounting for 8 ~ 15% of the mass of the polyethylene glycol monomethyl ether, mixing, heating to 190 ~ 210 ℃ to 210 ℃, heating and stirring for reaction for 4 ~ 6h under the condition of 300 ~ 500r/min to obtain a premix, taking the premix, maleic anhydride and an auxiliary agent according to the mass ratio of 10: 1: 1 ~ 3, mixing at 200 ~ 210 ℃, stirring for reaction for 4 ~ 6h at 200 ~ 400r/min, and discharging to obtain a base material;
(2) According to the mass parts, 30 ~ 50 parts of base material, 20 ~ 30 parts of styrene, 20 ~ 30 parts of water, 2 ~ 5 parts of initiator, 0.3 ~ 0.7.7 parts of stannous octoate, 8 ~ 15 parts of polydimethylsiloxane, 8 ~ 15 parts of mixed monomer and 4 ~ 8 parts of isocyanate are taken, the base material, the styrene, the isocyanate and the water are taken at 40 ~ 55 ℃ and poured into a mixer, the mixture is stirred and mixed at the rotating speed of 300 ~ 500r/min for 20 ~ 40min, the temperature is raised to 60 ~ 75 ℃, the mixed monomer, the initiator, the polydimethylsiloxane and the stannous octoate are added and mixed, the mixture is sheared and dispersed for 1 ~ 3h at 2000 ~ 3000r/min, the temperature is raised to 80 ~ 95 ℃ and kept stand for 1 ~ 3h, and the composite filler is obtained.
preparing a fermentation treatment substance, namely sequentially taking 8 4615 parts of pretreated coconut shell particles, 4 ~ parts of gelatin, 2 ~ parts of casein, 2 ~ parts of Bulgaria lactobacillus liquid and 300 ~ parts of water at 55 ~ ℃ according to parts by weight, mixing the pretreated coconut shell particles, the gelatin and the water in a reaction kettle, stirring for 40 ~ min at 400 ~ r/min, keeping the temperature and standing for 1 ~ h, heating to 75 ~ ℃, heating and stirring for 45 ~ min at the rotating speed of 300 ~ r/min, transferring to a fermentation tank, adding the casein and the Bulgaria lactobacillus liquid into the fermentation tank, sealing, oscillating at 28 ~ ℃, 180 ~ r/min by a shaker, performing fermentation culture for 4 ~ days to obtain a fermentation material, taking the fermentation material at 121 ℃ for 3620 min to obtain a fermentation material, taking the sterilization material, adjusting the pH of the sterilization material to 15% by mass of sodium bicarbonate solution, filtering, performing vacuum filtration, and concentrating the volume of the original fermentation material to obtain 3935% fermentation material.
the pressure-sensitive adhesive comprises, by mass, 7 ~ 15 parts of wetting agent, 0.1 ~ 0.4.4 parts of paraffin, 3 ~ 7 parts of naphthenic oil, 2 ~ 5 parts of antioxidant, 15 ~ 30 parts of self-made adhesive, 20 ~ 35 parts of composite filler and 12 ~ 20 parts of fermentation treatment product.
A preparation method of a pressure-sensitive adhesive comprises the following steps:
(1) According to the mass parts, 7 ~ 15 parts of wetting agent, 0.1 ~ 0.4.4 parts of paraffin, 3 ~ 7 parts of naphthenic oil, 2 ~ 5 parts of antioxidant, 15 ~ 30 parts of self-made adhesive, 20 ~ 35 parts of composite filler and 12 ~ 20 parts of fermentation treatment product are taken;
(2) Firstly, mixing wetting agent, paraffin, naphthenic oil, antioxidant and composite filler in a reaction kettle at 30 ~ 45 ℃, magnetically stirring for 20 ~ 40min at 400 ~ 600r/min, heating to 50 ~ 65 ℃, adding self-made adhesive and fermentation treatment substance, magnetically stirring for 40 ~ 60min at 2000 ~ 3000r/min, and vacuum evaporating at 60 ~ 80 ℃ to 15 ~ 30% of the original volume to obtain the pressure-sensitive adhesive.
Example 1
Preparing a self-made adhesive: taking peach gum at the water bath temperature of 45 ℃, and mixing the peach gum according to the mass ratio of 1: 1: 10, adding urea and deionized water, mixing, stirring at 400r/min for 25min, filtering, taking filter residues in a ball milling tank according to the mass ratio of 5: 0.1, adding absolute ethyl alcohol, and mixing according to the mass ratio of the ball material of 20: 1, adding zirconia ball grinding beads, carrying out ball milling for 30min at the speed of 300r/min to obtain ball grinding materials, and taking the ball grinding materials according to the mass ratio of 1: 3: 2, adding the sticky rice juice and the humic acid, mixing at the rotating speed of 300r/min for 1h, vacuumizing at 55 ℃ and evaporating to 30% of the original volume to obtain the self-made adhesive.
wetting agent: according to the mass ratio of 5: 1 mixing cetyl trimethyl ammonium bromide and sodium laureth sulfate to obtain the wetting agent.
Antioxidant: according to the mass ratio of 5: 1, mixing tert-butyl hydroquinone and pentaerythritol to obtain the antioxidant.
Initiator: potassium persulfate.
Mixing monomers: according to the mass ratio of 1: 1: 1, mixing acrylic acid, hydroxyalkyl acrylate and alkyl methacrylate to obtain the mixed monomer.
Auxiliary agents: according to the mass ratio of 3: 1 mixing cottonseed oil and linoleic acid to obtain the adjuvant.
Pretreating coconut shell particles: crushing coconut shells in a crusher, sieving the crushed coconut shells with a 80-mesh sieve, and sieving granules according to a mass ratio of 1: 10, adding an HCl solution with the concentration of 0.1mol/L, mixing, stirring for 20min at the speed of 400r/min, filtering, naturally drying filter residues, placing in a steam explosion device, and performing steam explosion at the pressure of 0.1MPa and the cylinder body temperature of 10 ℃, wherein the mass ratio of material to water is 1: and (20) performing steam explosion to obtain a blasting material, and performing microwave treatment on the blasting material at 400W for 10min to obtain the pretreated coconut shell particles.
The preparation method of the composite filler comprises the following steps:
(1) Taking polyethylene glycol monomethyl ether at 100 ℃, vacuumizing to 0.3kPa, dehydrating and drying for 3h, transferring to a reaction kettle at 40 ℃, introducing nitrogen for protection, adding acetic anhydride accounting for 12% of the mass of the polyethylene glycol monomethyl ether and pyridine accounting for 8% of the mass of the polyethylene glycol monomethyl ether, mixing, heating to 190 ℃, heating and stirring for reaction for 4h under the condition of 300r/min to obtain a premix, wherein the mass ratio of the components is 10: 1: 1, mixing the premix, maleic anhydride and the auxiliary agent, stirring and reacting for 4 hours at 200 ℃ at 200r/min, and discharging to obtain a base material;
(2) According to the mass parts, 30 parts of base material, 20 parts of styrene, 20 parts of water, 2 parts of initiator, 0.3 part of stannous octoate, 8 parts of polydimethylsiloxane, 8 parts of mixed monomer and 4 parts of isocyanate are taken, the base material, the styrene, the isocyanate and the water are poured into a mixer at 40 ℃, stirred and mixed for 20min at the rotating speed of 300r/min, heated to 60 ℃, added with the mixed monomer, the initiator, the polydimethylsiloxane and the stannous octoate for mixing, sheared and dispersed for 1h at 2000r/min, heated to 80 ℃, kept warm and stood for 1h, and the composite filler is obtained.
Preparation of fermentation treatment product: sequentially taking 8 parts of pretreated coconut shell particles, 4 parts of gelatin, 2 parts of casein, 2 parts of Bulgaria lactobacillus liquid and 300 parts of water at 55 ℃, mixing the pretreated coconut shell particles, the gelatin and the water in a reaction kettle, stirring for 40min at 400r/min, keeping the temperature and standing for 1h, heating to 75 ℃, heating and stirring for 45min at the rotating speed of 300r/min, transferring to a fermentation tank, adding the casein and the Bulgaria lactobacillus liquid into the fermentation tank, sealing the fermentation tank, oscillating at 28 ℃ at a shaking table of 180r/min, performing fermentation culture for 4 days to obtain a fermentation material, sterilizing the fermentation material at 121 ℃ for 20min to obtain a sterilized material, adjusting the pH of the sterilized material to be neutral by using a sodium bicarbonate solution with the mass fraction of 15%, filtering, and performing vacuum concentration on the filtrate to 20% of the original volume to obtain a fermentation treatment product.
The pressure-sensitive adhesive comprises the following components in parts by weight: 7 parts of wetting agent, 0.1 part of paraffin, 3 parts of naphthenic oil, 2 parts of antioxidant, 15 parts of self-made adhesive, 20 parts of composite filler and 12 parts of fermentation treatment product.
A preparation method of a pressure-sensitive adhesive comprises the following steps:
(1) Taking 7 parts of wetting agent, 0.1 part of paraffin, 3 parts of naphthenic oil, 2 parts of antioxidant, 15 parts of self-made adhesive, 20 parts of composite filler and 12 parts of fermentation treatment product in parts by mass;
(2) Firstly, mixing the wetting agent, the paraffin, the naphthenic oil, the antioxidant and the composite filler in a reaction kettle at 30 ℃, magnetically stirring for 20min at 400r/min, heating to 50 ℃, adding the self-made adhesive and the fermentation treatment substance, magnetically stirring for 40min at 2000r/min, and performing vacuum evaporation at 60 ℃ to 15% of the original volume to obtain the pressure-sensitive adhesive.
example 2
Preparing a self-made adhesive: taking peach gum at the temperature of 50 ℃ in water bath according to the mass ratio of 1: 2: 10, adding urea and deionized water, mixing, stirring for 40min at the speed of 500r/min, filtering, taking filter residues in a ball milling tank according to the mass ratio of 5: 0.2, adding absolute ethyl alcohol, and mixing according to the mass ratio of the ball material of 25: 1, adding zirconia ball grinding beads, carrying out ball milling for 40min at a speed of 400r/min to obtain ball grinding materials, and taking the ball grinding materials according to a mass ratio of 1: 4: 2, adding the sticky rice juice and the humic acid, mixing for 2 hours at the rotating speed of 400r/min, vacuumizing at 60 ℃ and evaporating to 35% of the original volume to obtain the self-made adhesive.
Wetting agent: according to the mass ratio of 5: 2 mixing cetyl trimethyl ammonium bromide and sodium laureth sulfate to obtain the wetting agent.
antioxidant: according to the mass ratio of 6: 1, mixing tert-butyl hydroquinone and pentaerythritol to obtain the antioxidant.
initiator: sodium persulfate.
Mixing monomers: according to the mass ratio of 2: 1: 1, mixing acrylic acid, hydroxyalkyl acrylate and alkyl methacrylate to obtain the mixed monomer.
Auxiliary agents: according to the mass ratio of 3: 1.5 mixing oleum gossypii semen and linoleic acid to obtain adjuvant.
pretreating coconut shell particles: crushing coconut shells in a crusher, sieving the crushed coconut shells with a 80-mesh sieve, and sieving granules according to a mass ratio of 1: 13 adding HCl solution with the concentration of 0.1mol/L, mixing, stirring for 35min at the speed of 500r/min, filtering, taking filter residue, naturally drying, placing in a steam explosion device, performing steam explosion at the pressure of 0.9MPa and the cylinder temperature of 250 ℃, wherein the mass ratio of material to water is 1: and 25, performing steam explosion to obtain a blasting material, and performing microwave treatment on the blasting material at 400W for 13min to obtain the pretreated coconut shell particles.
The preparation method of the composite filler comprises the following steps:
(1) Taking polyethylene glycol monomethyl ether at 105 ℃, vacuumizing to 0.4kPa, dehydrating and drying for 4h, transferring to a 50 ℃ reaction kettle, introducing nitrogen for protection, adding acetic anhydride accounting for 18% of the mass of the polyethylene glycol monomethyl ether and pyridine accounting for 12% of the mass of the polyethylene glycol monomethyl ether, mixing, heating to 200 ℃, heating and stirring for 5h under the condition of 400r/min to obtain a premix, wherein the mass ratio of the components is 10: 1: 2, mixing the premix, maleic anhydride and the auxiliary agent, stirring and reacting for 5 hours at 205 ℃ at 300r/min, and discharging to obtain a base material;
(2) According to the mass parts, 40 parts of base material, 25 parts of styrene, 25 parts of water, 4 parts of initiator, 0.5 part of stannous octoate, 12 parts of polydimethylsiloxane, 12 parts of mixed monomer and 6 parts of isocyanate are taken, the base material, the styrene, the isocyanate and the water are firstly taken at 45 ℃ and poured into a mixer, stirred and mixed for 30min at the rotating speed of 400r/min, heated to 68 ℃, added with the mixed monomer, the initiator, the polydimethylsiloxane and the stannous octoate for mixing, sheared and dispersed for 2h at 2500r/min, heated to 89 ℃, kept warm and kept stand for 2h, and the composite filler is obtained.
preparation of fermentation treatment product: at 65 ℃, sequentially taking 12 parts of pretreated coconut shell particles, 6 parts of gelatin, 4 parts of casein, 4 parts of Bulgaria lactobacillus liquid and 400 parts of water according to parts by weight, mixing the pretreated coconut shell particles, the gelatin and the water in a reaction kettle, stirring for 50min at 500r/min, keeping the temperature and standing for 2h, heating to 80 ℃, heating and stirring for 50min at the rotating speed of 400r/min, transferring to a fermentation tank, adding the casein and the Bulgaria lactobacillus liquid into the fermentation tank, then sealing the fermentation tank, oscillating at 29 ℃ by a shaking table at 200r/min, performing fermentation culture for 5 days to obtain a fermentation material, sterilizing the fermentation material at 121 ℃ for 25min to obtain a sterilized material, adjusting the pH of the sterilized material to be neutral by using a sodium bicarbonate solution with the mass fraction of 15%, filtering, and performing vacuum concentration on the filtrate to 28% of the original volume to obtain a fermentation treatment product.
The pressure-sensitive adhesive comprises the following components in parts by weight: 12 parts of wetting agent, 0.3 part of paraffin, 5 parts of naphthenic oil, 4 parts of antioxidant, 20 parts of self-made adhesive, 28 parts of composite filler and 18 parts of fermentation treatment product.
A preparation method of a pressure-sensitive adhesive comprises the following steps:
(1) According to the mass parts, 12 parts of wetting agent, 0.3 part of paraffin, 5 parts of naphthenic oil, 4 parts of antioxidant, 18 parts of self-made adhesive, 28 parts of composite filler and 18 parts of fermentation treatment substance are taken;
(2) Firstly, mixing the wetting agent, the paraffin, the naphthenic oil, the antioxidant and the composite filler in a reaction kettle at 35 ℃, magnetically stirring for 50min at 500r/min, heating to 55 ℃, adding the self-made adhesive and the fermentation treatment substance, magnetically stirring for 50min at 2500r/min, and performing vacuum evaporation at 70 ℃ to 20% of the original volume to obtain the pressure-sensitive adhesive.
Example 3
preparing a self-made adhesive: taking peach gum at the water bath temperature of 60 ℃ according to the mass ratio of 1: 3: 10, adding urea and deionized water, mixing, stirring for 50min at the speed of 600r/min, filtering, taking filter residues in a ball milling tank according to the mass ratio of 5: 0.3, adding absolute ethyl alcohol, and mixing according to the mass ratio of the ball material of 30: 1, adding zirconia ball grinding beads, carrying out ball milling for 50min at a speed of 500r/min to obtain ball grinding materials, and taking the ball grinding materials according to a mass ratio of 1: 6: 2, adding the sticky rice juice and the humic acid, mixing at the rotating speed of 500r/min for 3h, vacuumizing at 70 ℃ and evaporating to 45 percent of the original volume to obtain the self-made adhesive.
Wetting agent: according to the mass ratio of 5: 3 mixing cetyl trimethyl ammonium bromide and sodium laureth sulfate to obtain the wetting agent.
antioxidant: according to the mass ratio of 8: 1, mixing tert-butyl hydroquinone and pentaerythritol to obtain the antioxidant.
initiator: ammonium persulfate.
Mixing monomers: according to the mass ratio of 3: 1: 1, mixing acrylic acid, hydroxyalkyl acrylate and alkyl methacrylate to obtain the mixed monomer.
Auxiliary agents: according to the mass ratio of 3: 2 mixing the cottonseed oil and the linoleic acid to obtain the auxiliary agent.
Pretreating coconut shell particles: crushing coconut shells in a crusher, sieving the crushed coconut shells with a 80-mesh sieve, and sieving granules according to a mass ratio of 1: 15, adding an HCl solution with the concentration of 0.1mol/L, mixing for 45min at the speed of 600r/min, filtering, taking filter residues, naturally drying, placing in a steam explosion device, mixing at the steam explosion pressure of 1.6MPa and the cylinder body temperature of 350 ℃, wherein the mass ratio of material to water is 1: and (30) performing steam explosion to obtain a blasting material, and performing microwave treatment on the blasting material at 400W for 15min to obtain the pretreated coconut shell particles.
The preparation method of the composite filler comprises the following steps:
(1) Taking polyethylene glycol monomethyl ether at 110 ℃, vacuumizing to 0.7kPa, dehydrating and drying for 5h, transferring to a reaction kettle at 60 ℃, introducing nitrogen for protection, adding acetic anhydride accounting for 20% of the mass of the polyethylene glycol monomethyl ether and pyridine accounting for 15% of the mass of the polyethylene glycol monomethyl ether, mixing, heating to 210 ℃, heating and stirring for reaction for 6h under the condition of 500r/min to obtain a premix, wherein the mass ratio of the components is 10: 1: 3, mixing the premix, maleic anhydride and the auxiliary agent, stirring and reacting for 6 hours at 210 ℃ at 400r/min, and discharging to obtain a base material;
(2) According to the mass parts, 50 parts of base material, 30 parts of styrene, 30 parts of water, 5 parts of initiator, 0.7 part of stannous octoate, 15 parts of polydimethylsiloxane, 15 parts of mixed monomer and 8 parts of isocyanate are taken, the base material, the styrene, the isocyanate and the water are firstly taken at 55 ℃ and poured into a mixer, stirred and mixed for 40min at the rotating speed of 500r/min, heated to 75 ℃, added with the mixed monomer, the initiator, the polydimethylsiloxane and the stannous octoate for mixing, sheared and dispersed for 3h at 3000r/min, heated to 95 ℃, kept warm and kept stand for 3h, and the composite filler is obtained.
Preparation of fermentation treatment product: taking 15 parts of pretreated coconut shell particles, 8 parts of gelatin, 5 parts of casein, 5 parts of lactobacillus bulgaricus liquid and 500 parts of water in sequence at 70 ℃, mixing the pretreated coconut shell particles, the gelatin and the water in a reaction kettle, stirring for 60min at 600r/min, keeping the temperature and standing for 3h, heating to 90 ℃, heating and stirring for 60min at the rotating speed of 500r/min, transferring to a fermentation tank, adding casein and lactobacillus bulgaricus liquid into the fermentation tank, sealing the fermentation tank, oscillating at 32 ℃ at a shaking table of 220r/min, performing fermentation culture for 6 days to obtain a fermentation material, taking the fermentation material to sterilize for 35min at 121 ℃ to obtain a sterilized material, taking the sterilized material to adjust the pH to be neutral by using a sodium bicarbonate solution with the mass fraction of 15%, filtering, and taking filtrate and concentrating in vacuum to 35% of the original volume to obtain a fermentation treatment product.
The pressure-sensitive adhesive comprises the following components in parts by weight: 15 parts of wetting agent, 0.4 part of paraffin, 7 parts of naphthenic oil, 5 parts of antioxidant, 30 parts of self-made adhesive, 35 parts of composite filler and 20 parts of fermentation treatment product.
a preparation method of a pressure-sensitive adhesive comprises the following steps:
(1) taking 15 parts of wetting agent, 0.4 part of paraffin, 7 parts of naphthenic oil, 5 parts of antioxidant, 30 parts of self-made adhesive, 35 parts of composite filler and 20 parts of fermentation treatment substance in parts by weight;
(2) Firstly, mixing a wetting agent, paraffin, naphthenic oil, an antioxidant and a composite filler in a reaction kettle at 45 ℃, magnetically stirring for 40min at 600r/min, heating to 65 ℃, adding a self-made adhesive and a fermentation treatment substance, magnetically stirring for 60min at 3000r/min, and performing vacuum evaporation at 80 ℃ to 30% of the original volume to obtain the pressure-sensitive adhesive.
comparative example 1: the preparation method was substantially the same as that of example 1 except that the fermentation substrate was absent.
Comparative example 2: the procedure was essentially the same as in example 1 except that the composite filler was absent.
Comparative example 3: pressure-sensitive adhesive manufactured by a company in the Wuxi market.
The pressure-sensitive adhesives obtained in the examples and the comparative examples are tested according to GB/T528-2009 and GB/T22235-2008 standards, and the test results are shown in Table 1.
Table 1:
| Test items | Example 1 | example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Peeling force gf/25mm | 6.98 | 6.52 | 6.76 | 6.12 | 6.24 | 3.38 |
| Adhesive force gf/25mm | 871.7 | 859.6 | 864.3 | 834.5 | 839.1 | 568.6 |
| Elongation at break% | 601 | 592 | 595 | 576 | 584 | 451 |
In sum, compared with the products sold in the market, the pressure-sensitive adhesive has better effect and is worthy of great popularization.
Claims (8)
1. A pressure-sensitive adhesive comprises, by mass, 7 ~ 15 parts of wetting agent, 0.1 ~ 0.4.4 parts of paraffin, 3 ~ 7 parts of naphthenic oil, 2 ~ 5 parts of antioxidant, 15 ~ 30 parts of self-made adhesive, and is characterized by also comprising 20 ~ 35 parts of composite filler and 12 ~ 20 parts of fermentation treatment substance;
The preparation method of the composite filler comprises the following steps:
(1) Taking polyethylene glycol monomethyl ether at 100 ~ 110 ℃, carrying out vacuum-pumping drying treatment, introducing nitrogen for protection, adding acetic anhydride accounting for 12 ~ 20% of the mass of the polyethylene glycol monomethyl ether and pyridine accounting for 8 ~ 15% of the mass of the polyethylene glycol monomethyl ether, mixing, heating, stirring and reacting to obtain a premix, taking the premix, maleic anhydride and auxiliary agents according to the mass ratio of 10: 1: 1 ~ 3, mixing, stirring and reacting at 200 ~ 210 ℃, and discharging to obtain a base material;
(2) according to the mass parts, 30 ~ 50 parts of base material, 20 ~ 30 parts of styrene, 20 ~ 30 parts of water, 2 ~ 5 parts of initiator, 0.3 ~ 0.7.7 parts of stannous octoate, 8 ~ 15 parts of polydimethylsiloxane, 8 ~ 15 parts of mixed monomer and 4 ~ 8 parts of isocyanate are taken, the base material, the styrene, the isocyanate and the water are taken at 40 ~ 55 ℃ first, stirred and mixed, heated, added with the mixed monomer, the initiator, the polydimethylsiloxane and the stannous octoate and mixed, sheared and dispersed, heated, kept warm and kept stand to obtain the composite filler;
The self-made adhesive is prepared by adding urea and water into peach gum according to the mass ratio of 1: 1 ~ 3: 10 at 45 ~ 60 ℃, mixing and stirring, filtering, adding filter residue into absolute ethyl alcohol according to the mass ratio of 5: 0.1 ~ 0.3.3, mixing, adding zirconia ball grinding beads according to the ball material mass ratio of 20 ~ 30: 1, ball grinding to obtain ball grinding materials, adding glutinous rice juice and humic acid into the ball grinding materials according to the mass ratio of 1: 3 ~ 6: 2, mixing and stirring, and performing vacuum evaporation at 55 ~ 70 ℃ to obtain the self-made adhesive.
2. the pressure-sensitive adhesive according to claim 1, wherein the auxiliary agent in the step (1) is prepared by mixing cottonseed oil and linoleic acid according to a mass ratio of 3: 1 ~ 2.
3. The pressure-sensitive adhesive of claim 1, wherein the initiator in step (2): any one of potassium persulfate, sodium persulfate and ammonium persulfate.
4. the pressure-sensitive adhesive according to claim 1, wherein the mixed monomer in the step (2) is prepared by mixing acrylic acid, hydroxyalkyl acrylate and alkyl methacrylate according to a mass ratio of 1 ~ 3: 1: 1.
5. The pressure-sensitive adhesive according to claim 1, wherein the fermentation treatment is prepared by mixing pretreated coconut shell particles, gelatin and water at a temperature of 55 ~ ℃ in a weight ratio of 8 3615 parts, gelatin at a temperature of 4 ~ parts, casein at a temperature of 2 ~ parts, lactobacillus bulgaricus liquid at a temperature of 2 ~ parts, and water at a temperature of 300 ~ parts, stirring, standing at a temperature of 28 5932 ℃, heating, stirring, adding the casein and lactobacillus bulgaricus liquid, sealing, shaking a shaker at a temperature of 28 5932 ℃, performing fermentation culture to obtain a fermentation material, sterilizing the fermentation material to obtain a sterilized material, adjusting the pH value of the sterilized material, filtering, and vacuum-concentrating the filtrate to obtain the fermentation treatment.
6. The pressure-sensitive adhesive according to claim 5, wherein the pretreated coconut shell particles are prepared by crushing and sieving coconut shells, adding HCl solution into the sieved particles according to the mass ratio of 1: 10 ~ 15, mixing and stirring, filtering, drying filter residues, performing steam explosion to obtain blasting materials, and performing microwave treatment on the blasting materials to obtain the pretreated coconut shell particles.
7. The pressure-sensitive adhesive as claimed in claim 1, wherein the antioxidant is obtained by mixing tert-butylhydroquinone and pentaerythritol in a mass ratio of 5 ~ 8: 1.
8. The pressure-sensitive adhesive according to claim 1, wherein the wetting agent is prepared by mixing cetyl trimethyl ammonium bromide and sodium laureth sulfate according to a mass ratio of 5: 1 ~ 3.
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| CN106118531A (en) * | 2016-07-19 | 2016-11-16 | 仇颖超 | A kind of preparation method of coir fibre element modified acroleic acid ester pressure-sensitive |
| CN107236490A (en) * | 2017-06-28 | 2017-10-10 | 常州杰轩纺织科技有限公司 | A kind of preparation method of high temperature resistant pressure sensitive adhesive |
| CN107556963A (en) * | 2016-07-01 | 2018-01-09 | 吴明辉 | A kind of ultraviolet photo-curing pressure sensitive adhesive |
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| CN107556963A (en) * | 2016-07-01 | 2018-01-09 | 吴明辉 | A kind of ultraviolet photo-curing pressure sensitive adhesive |
| CN106118531A (en) * | 2016-07-19 | 2016-11-16 | 仇颖超 | A kind of preparation method of coir fibre element modified acroleic acid ester pressure-sensitive |
| CN107236490A (en) * | 2017-06-28 | 2017-10-10 | 常州杰轩纺织科技有限公司 | A kind of preparation method of high temperature resistant pressure sensitive adhesive |
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