CN112662346B - Glue for masking tape and preparation method thereof - Google Patents
Glue for masking tape and preparation method thereof Download PDFInfo
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- CN112662346B CN112662346B CN202011522730.XA CN202011522730A CN112662346B CN 112662346 B CN112662346 B CN 112662346B CN 202011522730 A CN202011522730 A CN 202011522730A CN 112662346 B CN112662346 B CN 112662346B
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- 239000003292 glue Substances 0.000 title claims abstract description 169
- 230000000873 masking effect Effects 0.000 title claims abstract description 93
- 238000002360 preparation method Methods 0.000 title claims abstract description 37
- 235000013808 oxidized starch Nutrition 0.000 claims abstract description 61
- 239000001254 oxidized starch Substances 0.000 claims abstract description 61
- 229920002545 silicone oil Polymers 0.000 claims abstract description 35
- 239000003999 initiator Substances 0.000 claims abstract description 33
- 239000007822 coupling agent Substances 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 22
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 19
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000037452 priming Effects 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 66
- 229920002472 Starch Polymers 0.000 claims description 50
- 235000019698 starch Nutrition 0.000 claims description 45
- 239000008107 starch Substances 0.000 claims description 45
- 238000003756 stirring Methods 0.000 claims description 42
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 238000002156 mixing Methods 0.000 claims description 28
- 235000013336 milk Nutrition 0.000 claims description 27
- 239000008267 milk Substances 0.000 claims description 27
- 210000004080 milk Anatomy 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 18
- 229920000297 Rayon Polymers 0.000 claims description 18
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 18
- 230000000977 initiatory effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 229920001592 potato starch Polymers 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 9
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 9
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 230000006872 improvement Effects 0.000 claims description 9
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 7
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 239000011790 ferrous sulphate Substances 0.000 claims description 7
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 7
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 7
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 7
- 229920002261 Corn starch Polymers 0.000 claims description 5
- 239000008120 corn starch Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229940100445 wheat starch Drugs 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 18
- 238000011056 performance test Methods 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 8
- 230000032683 aging Effects 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003254 radicals Chemical group 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
The application relates to the technical field of glue, and particularly discloses glue for a masking tape and a preparation method of the glue. The glue of the masking tape is prepared from the following raw materials in parts by weight: 20-30 parts of butyl acrylate, 30-40 parts of isooctyl acrylate, 3-5 parts of acrylic acid, 5-10 parts of tackifier, 2-4 parts of coupling agent, 5-8 parts of initiator, 5-10 parts of priming solution, 10-16 parts of oxidized starch and 7-9 parts of silicone oil.
Description
Technical Field
The application relates to the technical field of glue, in particular to glue of masking tape and a preparation method thereof
Background
The masking tape is a roll-shaped adhesive tape prepared by using masking paper and pressure-sensitive adhesive as main raw materials, coating the pressure-sensitive adhesive on the masking paper and coating an anti-sticking material on the other side. The masking tape has the characteristics of high temperature resistance, good chemical solvent resistance, high adhesive force, softness, fitness, no residual adhesive after being torn again and the like.
The masking tape inevitably contacts water in the using process, the waterproof performance of the existing pressure-sensitive adhesive is poor, and the adhesion of the masking tape after water absorption is poor, so that the normal use of the masking tape is influenced.
Disclosure of Invention
In order to overcome the defect of poor water resistance of the existing glue, the application provides the glue for the masking tape and the preparation method thereof.
In a first aspect, the application provides a glue for masking tape, which adopts the following technical scheme:
the glue of the masking tape is prepared from the following raw materials in parts by weight: 20-30 parts of butyl acrylate, 30-40 parts of isooctyl acrylate, 3-5 parts of acrylic acid, 5-10 parts of tackifier, 2-4 parts of coupling agent, 5-8 parts of initiator, 5-10 parts of priming solution, 10-16 parts of oxidized starch and 7-9 parts of silicone oil.
By adopting the technical scheme, butyl acrylate, isooctyl acrylate and acrylic acid are selected as main raw materials of the glue and are cooperated with each other, so that the glue has the excellent performances of rapid drying and forming, good transparency, good weather resistance, good adhesion and the like; the tackifier is dispersed in the glue system, so that the tackifying function of the glue system can be fully exerted, and the bonding performance of the glue is further improved; the coupling agent can improve the surface activity among the components in the glue system, so that the connection among the components is firmer, and the stability of the glue is further improved; simultaneously, the common action of the initiator and the initiation liquid is utilized to open unsaturated bonds in butyl acrylate, isooctyl acrylate and acrylic acid molecules, so that free radical chain addition reaction is carried out, all components are reacted with each other, and the performance of the glue is better; the oxidized starch has good viscosity, on one hand, the bonding performance of the glue can be improved, on the other hand, the oxidized starch is adhered among the components, so that the bonding strength among the components is increased, the impermeability of the glue is improved, and external water is not easy to enter the inside of the glue, so that the waterproof performance of the glue is improved; the silicone oil has good hydrophobicity, and the molecular surface of the silicone oil is smooth and easy to migrate to the surface of the glue, so that a hydrophobic layer is formed on the surface of the glue, and the waterproof performance of the glue is improved.
Preferably, the oxidized starch is prepared by oxidizing one of potato starch, corn starch and wheat starch.
By adopting the technical scheme, the viscosity of the starch is extremely high, and the starch is not suitable for surface sizing, after the starch is subjected to oxidation treatment, chemical bonds in molecules of the starch are broken to form oxidized starch, and the viscosity is also reduced to some extent, so that the starch is suitable for surface sizing; in addition, the raw materials of potato starch, corn starch and wheat starch which are easy to obtain are selected, so that the glue can be conveniently produced on a large scale.
Preferably, the preparation method of the oxidized starch comprises the following steps: 1) adding starch accounting for 40-60% of the water by weight into water with the temperature of 30-45 ℃, then stirring for 30-50min, then adding ferrous sulfate accounting for 0.1-0.15% of the water by weight, and continuously stirring for 10-20min to prepare starch milk: 2) continuously dropwise adding 8-12% by mass of sodium hydroxide solution into the starch milk, and keeping the stirring state until the pH value of the starch milk is 7-8; 3) adding 20-30% of hydrogen peroxide solution by mass fraction into the starch milk in the step 2), stirring for 30-40min, then continuously adding 8-12% of sodium hydroxide solution by mass fraction, and keeping the stirring state until the pH value of the starch milk is 9-10.
By adopting the technical scheme, the starch is firstly prepared into the starch milk, so that the starch milk and the ferrous sulfate are mixed more uniformly; then adding sodium hydroxide solution, which is acted with ferrous sulfate to promote the hydrolysis of starch, and hydrogen peroxide can destroy the chemical bonds among starch molecules to reduce the polymerization degree of starch, so that the viscosity of the oxidized starch is in a proper range; in addition, the polymerization degree of oxidized starch is reduced, other components in a glue system are easier to enter the interior of starch molecules, so that a net structure is formed, the bonding strength among the components is enhanced, external water is not easy to enter, and the waterproof performance of the glue is improved.
Preferably, the tackifier is one or more of rosin resin, styrene-butadiene rubber and viscose.
By adopting the technical scheme, the rosin resin has high viscosity and good oxidation resistance, the bonding performance of the glue can be improved, the oxidation resistance of the glue is enhanced, and the effective service time of the glue is prolonged; the styrene butadiene rubber is heat-resistant, ageing-resistant and adhesive rubber, and can improve the heat-resistant, ageing-resistant and adhesive properties of the glue; the viscose fiber is a fibrous structure with good viscosity, is dispersed in a glue system, not only enhances the adhesion of the glue, but also can ensure that the connection among all the components of the glue is more stable, thereby improving the comprehensive performance of the glue.
Preferably, the tackifier is a mixture of 5 (3-5) to 1-3 parts by weight of rosin resin, styrene-butadiene rubber and viscose.
By adopting the technical scheme, the proportion of the rosin resin, the styrene butadiene rubber and the viscose is controlled within a proper range, so that the prepared glue has the oxidation resistance of the rosin resin and the excellent performances of the styrene butadiene rubber such as heat resistance and aging resistance, and the viscose enables the connection among the components in a glue system to be firmer, thereby enabling the performance of the prepared glue to be better.
Preferably, the initiator is a mixture of benzoyl peroxide and tert-butyl perbenzoate in the weight ratio of (1-2) to 1.
By adopting the technical scheme, the benzoyl peroxide and the tert-butyl perbenzoate are both organic peroxides which are cooperated to be used as an initiator in a glue system, so that the polymerization initiation effect of the system is better, and the glue is more stable.
Preferably, the coupling agent is a silane coupling agent.
By adopting the technical scheme, the silane coupling agent contains the organic functional group and the siloxy functional group, so that when the silane coupling agent is between an inorganic interface and an organic interface, a bonding layer of an organic matrix, the silane coupling agent and an inorganic matrix can be formed, the compatibility of the interface between the organic substance and the inorganic substance in a glue system is better, the connection of all components is firmer, and the stability of the glue is further improved.
In a second aspect, the application provides a preparation method of glue for masking tape, which adopts the following technical scheme:
a preparation method of glue for a masking tape comprises the following steps:
1) and weighing raw materials: weighing the following raw materials in parts by weight: butyl acrylate, isooctyl acrylate, acrylic acid, tackifier, coupling agent, initiator, priming solution, oxidized starch and silicone oil;
2) primary mixing of main materials: adding butyl acrylate, isooctyl acrylate and acrylic acid into a reaction container, and stirring and reacting for 1-2h at 70-80 ℃ to obtain a mixture I;
3) and initiating reaction: adding a tackifier and a coupling agent into the first mixture, uniformly mixing an initiator and an initiation liquid, adding the mixture into the first mixture, heating to the temperature of 110-;
4) and improving treatment: and cooling the mixture II to 70-80 ℃, adding oxidized starch and silicone oil into the mixture II, stirring and mixing for 1-2h, and then preserving heat and standing for 30-60min to obtain the glue of the masking tape.
By adopting the technical scheme, the main materials are mixed firstly, so that the main materials, the main materials and the auxiliary materials can fully react; and then, the tackifier and the coupling agent are added, so that the mixing uniformity of the three main materials can be improved, the initiator is dissolved by the initiation liquid and then added into the first mixture, so that the initiator and the first mixture can be mixed more uniformly, the initiation effect of the initiator is better, and the glue with better performance is prepared.
Preferably, in the modification treatment step, the oxidized starch and the silicone oil are uniformly added in 3-5 parts at equal time intervals into the second mixture.
By adopting the technical scheme, the oxidized starch and the silicone oil are added for multiple times, so that the oxidized starch, the silicone oil and the glue system can react and mix more fully, and the glue with better performance is prepared.
In summary, the present application has the following beneficial effects:
1. the oxidized starch has good viscosity, on one hand, the bonding performance of the glue can be improved, on the other hand, the oxidized starch is adhered among the components, so that the bonding strength among the components is increased, the impermeability of the glue is improved, external water is not easy to enter the inside of the glue, and the waterproof performance of the glue is improved; the silicone oil has good hydrophobicity, and the molecular surface of the silicone oil is smooth and easy to migrate to the surface of the glue, so that a hydrophobic layer is formed on the surface of the glue, and the waterproof performance of the glue is improved.
2. The proportion control of rosin resin, butadiene styrene rubber and viscose fiber in this application is in suitable scope, can make the glue that prepares not only have rosin resin's oxidation resistance, still have butadiene styrene rubber's heat-resisting, excellent properties such as ageing-resistant, and viscose fiber makes the connection between each component more firm in the glue system to make the performance of the glue of preparing more excellent.
3. According to the method, the main materials are mixed firstly, so that the main materials, the main materials and the auxiliary materials can react fully; and then, the tackifier and the coupling agent are added, so that the mixing uniformity of the three main materials can be improved, the initiator is dissolved by the initiation liquid and then added into the first mixture, so that the initiator and the first mixture can be mixed more uniformly, the initiation effect of the initiator is better, and the glue with better performance is prepared.
Detailed Description
The present application will be described in further detail with reference to examples.
The butyl acrylate, the isooctyl acrylate, the acrylic acid, the rosin resin and the styrene butadiene rubber used in the application are all purchased from chemical reagents of national medicine group, and are all chemically pure; silane coupling agents were purchased from hangzhou jersey chemical limited under the designation KH 550: the viscose fiber is purchased from Chuanminyu textile Co., Ltd, Dongguan city, the product number CMY-001; silica gel was purchased from Jinan silicon Port chemical Co., Ltd, cat # 27.
Preparation example of oxidized starch
Preparation example 1
The preparation method of the oxidized starch comprises the following steps:
1) adding potato starch accounting for 50% of water by weight into 1000ml of water with the temperature of 37.5 ℃, then stirring for 40min, then adding ferrous sulfate accounting for 0.125% of water by weight, and continuously stirring for 15min to prepare starch milk:
2) continuously dropwise adding a sodium hydroxide solution with the mass fraction of 10% into the starch milk, and keeping the stirring state until the pH value of the starch milk is 7.5;
3) adding 500ml of 25% hydrogen peroxide solution by mass fraction into the starch milk in the step 2), stirring for 35min, then continuously adding 10% sodium hydroxide solution by mass fraction, and keeping the stirring state until the pH value of the starch milk is 9.5.
Preparation example 2
The preparation method of the oxidized starch comprises the following steps:
1) adding potato starch accounting for 40 percent of the weight of water into 1000ml of water with the temperature of 30 ℃, then stirring for 30min, then adding ferrous sulfate accounting for 0.1 percent of the weight of water, and continuously stirring for 10min to prepare starch milk:
2) continuously dropwise adding a sodium hydroxide solution with the mass fraction of 8% into the starch milk, and keeping the stirring state until the pH value of the starch milk is 7;
3) adding 500ml of 20% hydrogen peroxide solution into the starch milk in the step 2), stirring for 30min, then continuously adding 8% sodium hydroxide solution, and keeping the stirring state until the pH value of the starch milk is 9.
Preparation example 3
The preparation method of the oxidized starch comprises the following steps:
1) adding potato starch accounting for 60 percent of the weight of water into 1000ml of 45 ℃ water, stirring for 50min, adding ferrous sulfate accounting for 0.15 percent of the weight of water, and continuously stirring for 20min to prepare starch milk:
2) continuously dropwise adding a sodium hydroxide solution with the mass fraction of 12% into the starch milk, and keeping the stirring state until the pH value of the starch milk is 8;
3) adding 500ml of 30% hydrogen peroxide solution by mass fraction into the starch milk in the step 2), stirring for 40min, then continuously adding 12% sodium hydroxide solution by mass fraction, and keeping the stirring state until the pH value of the starch milk is 10.
Preparation example 4
The difference between the preparation example and the preparation example 1 is that: the starch is selected from corn starch.
Preparation example 5
The difference between the preparation example and the preparation example 1 is that: the starch is wheat starch.
Preparation example 6
The difference between the preparation example and the preparation example 1 is that: the starch is sweet potato starch.
Examples
Example 1
The glue of the masking tape provided by the embodiment is prepared from the following raw materials by mass: 25kg of butyl acrylate, 35kg of isooctyl acrylate, 4kg of acrylic acid, 7.5kg of tackifier, 3kg of coupling agent, 6.5kg of initiator, 7.5kg of priming solution, 13kg of oxidized starch and 8kg of silicone oil.
Wherein: the tackifier is a mixture of rosin resin, styrene butadiene rubber and viscose fibers in a mass ratio of 5:4: 2; the coupling agent is a silane coupling agent; the initiator is a mixture of benzoyl peroxide and tert-butyl perbenzoate with the mass ratio of 1.5: 1; the priming solution is a methanol solution with the mass fraction of 10%; the oxidized starch in preparation example 1 was used as the oxidized starch.
The preparation method of the glue of the masking tape comprises the following steps:
1) and weighing raw materials: respectively weighing 25kg of butyl acrylate, 35kg of isooctyl acrylate, 4kg of acrylic acid, 7.5kg of tackifier, 3kg of coupling agent, 6.5kg of initiator, 7.5kg of priming solution, 13kg of oxidized starch and 8kg of silicone oil;
2) primary mixing of main materials: adding butyl acrylate, isooctyl acrylate and acrylic acid into a reaction container, and stirring and reacting for 1.5h at 75 ℃ to obtain a mixture I;
3) and initiating reaction: adding a tackifier and a coupling agent into the first mixture, uniformly mixing an initiator and an initiation liquid, adding the mixture into the first mixture, heating to 117.5 ℃, and stirring for reacting for 45min to obtain a second mixture;
4) and improvement treatment: and cooling the mixture II to 75 ℃, uniformly mixing the oxidized starch and the silicone oil, dividing into 4 times, adding into the mixture II at intervals of 20min, stirring and mixing for 1.5h after the addition is finished, and standing at the temperature for 45min to obtain the glue of the masking tape.
Example 2
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the adhesive is prepared from the following raw materials, by mass, 20kg of butyl acrylate, 30kg of isooctyl acrylate, 3kg of acrylic acid, 5kg of tackifier, 2kg of coupling agent, 5kg of initiator, 5kg of priming solution, 10kg of oxidized starch and 7kg of silicone oil.
The preparation method of the glue of the masking tape comprises the following steps:
1) and weighing raw materials: respectively weighing 20kg of butyl acrylate, 30kg of isooctyl acrylate, 3kg of acrylic acid, 5kg of tackifier, 2kg of coupling agent, 5kg of initiator, 5kg of priming solution, 10kg of oxidized starch and 7kg of silicone oil;
2) primary mixing of main materials: adding butyl acrylate, isooctyl acrylate and acrylic acid into a reaction vessel, and stirring and reacting for 1h at 70 ℃ to obtain a mixture I;
3) and initiating reaction: adding a tackifier and a coupling agent into the first mixture, uniformly mixing an initiator and an initiation liquid, adding the mixture into the first mixture, heating to 110 ℃, and stirring for reacting for 30min to obtain a second mixture;
4) and improvement treatment: and cooling the mixture II to 70 ℃, uniformly mixing the oxidized starch and the silicone oil, dividing into 4 times, adding into the mixture II at intervals of 20min, stirring and mixing for 1h after adding, and standing for 30min under heat preservation to obtain the glue of the masking tape.
Example 3
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the adhesive is prepared from the following raw materials, by mass, 30kg of butyl acrylate, 40kg of isooctyl acrylate, 5kg of acrylic acid, 10kg of tackifier, 4kg of coupling agent, 8kg of initiator, 10kg of priming solution, 16kg of oxidized starch and 9kg of silicone oil.
The preparation method of the glue of the masking tape comprises the following steps:
1) and weighing raw materials: respectively weighing 30kg of butyl acrylate, 40kg of isooctyl acrylate, 5kg of acrylic acid, 10kg of tackifier, 4kg of coupling agent, 8kg of initiator, 10kg of priming solution, 16kg of oxidized starch and 9kg of silicone oil;
2) primary mixing of main materials: adding butyl acrylate, isooctyl acrylate and acrylic acid into a reaction container, and stirring and reacting for 2 hours at 80 ℃ to obtain a mixture I;
3) and initiating reaction: adding a tackifier and a coupling agent into the first mixture, uniformly mixing an initiator and an initiation liquid, adding the mixture into the first mixture, heating to 125 ℃, and stirring for reacting for 60min to obtain a second mixture;
4) and improvement treatment: and cooling the mixture II to 80 ℃, uniformly mixing the oxidized starch and the silicone oil, dividing into 4 times, adding into the mixture II at intervals of 20min, stirring and mixing for 2h after the addition is finished, and standing at the heat preservation for 60min to obtain the glue of the masking tape.
Example 4
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the tackifier is rosin resin.
Example 5
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the tackifier is styrene butadiene rubber.
Example 6
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the tackifier is viscose fiber.
Example 7
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the tackifier is mica powder.
Example 8
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the tackifier is silica gel.
Example 9
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the tackifier is a mixture of rosin resin, styrene-butadiene rubber and viscose fibers in a mass ratio of 5:3: 1.
Example 10
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the tackifier is a mixture of rosin resin, styrene-butadiene rubber and viscose fibers in a mass ratio of 5:5: 3.
Example 11
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the tackifier is a mixture of rosin resin, styrene-butadiene rubber and viscose fibers in a mass ratio of 1:1: 1.
Example 12
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the tackifier is a mixture of rosin resin, styrene-butadiene rubber and viscose fibers in a mass ratio of 5:5: 4.
Example 13
The difference between the glue of the masking tape provided in this embodiment and that of embodiment 1 is that: the initiator is a mixture of benzoyl peroxide and tert-butyl perbenzoate with the mass ratio of 1: 1.
Example 14
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the initiator is a mixture of benzoyl peroxide and tert-butyl perbenzoate with the mass ratio of 2: 1.
Example 15
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the initiator is a mixture of benzoyl peroxide and tert-butyl perbenzoate with the mass ratio of 3: 1.
Example 16
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the initiator is a mixture of benzoyl peroxide and tert-butyl perbenzoate with the mass ratio of 1: 2.
Example 17
The difference between the glue of the masking tape provided in this embodiment and that of embodiment 1 is that: 4) and improvement treatment: and cooling the mixture II to 75 ℃, uniformly mixing the oxidized starch and the silicone oil, adding the mixture into the mixture II at one time, stirring and mixing for 1.5h after the addition is finished, and standing for 45min at the temperature to obtain the glue of the masking tape.
Example 18
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: 4) and improvement treatment: and cooling the mixture II to 75 ℃, uniformly mixing the oxidized starch and the silicone oil, dividing into 3 times, adding into the mixture II at intervals of 20min, stirring and mixing for 1.5h after adding, and standing at the temperature for 45min to obtain the glue of the masking tape.
Example 19
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: 4) and improvement treatment: and cooling the mixture II to 75 ℃, uniformly mixing the oxidized starch and the silicone oil, dividing into 5 times, adding into the mixture II at intervals of 20min, stirring and mixing for 1.5h after the addition is finished, and standing at the temperature for 45min to obtain the glue of the masking tape.
Example 20
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: 4) and improvement treatment: and cooling the mixture II to 75 ℃, uniformly mixing the oxidized starch and the silicone oil, dividing into 4 times, adding into the mixture II at intervals of 5min, 10min, 15min and 20min in sequence, stirring and mixing for 1.5h after adding, and standing at the temperature for 45min to obtain the glue of the masking tape.
Example 21
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the oxidized starch in preparation example 2 was used as the oxidized starch.
Example 22
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the oxidized starch in preparation example 3 was used as the oxidized starch.
Example 23
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the oxidized starch in preparation example 4 was used as the oxidized starch.
Example 24
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the oxidized starch in preparation example 5 was used as the oxidized starch.
Example 25
The difference between the glue of the masking tape provided by the embodiment and the glue of the masking tape provided by the embodiment 1 is that: the oxidized starch in preparation example 6 was used as the oxidized starch.
Comparative example
Comparative example 1
The difference between the glue of the masking tape provided by the comparative example and the glue of the masking tape provided by the example 1 is as follows: the raw material does not contain oxidized starch.
Comparative example 2
The difference between the glue of the masking tape provided by the comparative example and the glue of the masking tape provided by the example 1 is as follows: the raw material does not contain silicone oil.
Comparative example 3
The difference between the glue of the masking tape provided by the comparative example and the glue of the masking tape provided by the example 1 is as follows: the raw materials do not contain oxidized starch and silicone oil.
Comparative example 4
The difference between the glue of the masking tape provided by the comparative example and the glue of the masking tape provided by the example 1 is as follows: the raw material does not contain oxidized starch and silicone oil, and contains 10kg of common potato starch.
Comparative example 5
The difference between the glue of the masking tape provided by the comparative example and the glue of the masking tape provided by the example 1 is as follows: the raw material does not contain oxidized starch, and contains 10kg of common potato starch.
Performance test
Water resistance
Respectively coating the glue prepared in the examples 1-25 and the comparative examples 1-5 on a transparent glass block with the thickness of 10mm by 10mm, wherein the coating thickness is 2mm, and taking the glue as a sample after the glue is dried; a drop of pure water is dripped on a sample by using a rubber head dropper, then the sample is placed on a sample table of a glue colloid contact angle measuring instrument, the size of a contact angle is measured by using the glue colloid contact angle measuring instrument, the larger the contact angle is, the better the waterproof performance of the glue is, and the detection result is recorded in table 1.
Adhesive property
Respectively coating the glue prepared in the examples 1-25 and the comparative examples 1-5 on a steel sheet with the diameter of 30mm to serve as a sample; fixing the sample on a cylindrical clamp of a universal testing machine, coating 3mg of glue between the front surfaces of the two steel sheets, pulling the two steel sheets back and forth and bonding for 10 times, compacting for 10min by using 20N force to enable the bonding surfaces of the two steel sheets to be uniformly and tightly contacted, pulling the steel sheets at the speed of 1mm/min, and measuring the bonding force and the bonding strength of the instant adhesive.
Aging Property
The glues prepared in examples 1 to 25 and comparative examples 1 to 5 were subjected to a tensile strength test, and the tensile strength of the glue at that time was recorded; then, carrying out a heat aging experiment in a heat aging box under the following conditions: taking out the sample for 72 hours at 80 ℃, testing the tensile strength again, and recording the tensile strength of the glue; the aging resistance of the sample was judged by comparing the change rate of the tensile strength twice with reference to the following criteria.
A level: the tensile strength change rate is less than or equal to 3 percent;
b stage: the change rate of tensile strength is more than 3 percent and less than or equal to 5 percent;
c level: the change rate of tensile strength is more than 5 percent and less than or equal to 8 percent;
d stage: the tensile strength change rate is more than 8 percent and less than or equal to 11 percent;
e, grade: the change rate of the tensile strength is more than 11 percent and less than or equal to 14 percent.
TABLE 1 Performance test Table
From the above performance test results, it can be seen that:
1. the results of the performance tests of examples 1-3 show that: all the performances of the three groups of samples are better, which shows that the glue prepared by the raw material composition and the preparation method has better performances.
2. According to the performance test results of the embodiment 1 and the embodiments 4 to 8, the following results can be obtained: the properties of examples 1, 4, 5 and 6 are all superior to those of examples 7 and 8, which shows that: the tackifier is selected from rosin resin, styrene butadiene rubber and viscose fiber to obtain the glue with excellent performances.
3. According to the performance test results of the embodiment 1 and the embodiments 9-12, the following results can be obtained: the properties of examples 1, 9 and 10 are superior to those of examples 11-12, which shows that: the proportion of the rosin resin, the styrene-butadiene rubber and the viscose is controlled within 5 (3-5) to (1-3), so that the prepared glue not only has the oxidation resistance of the rosin resin, but also has the excellent performances of the styrene-butadiene rubber, such as heat resistance, aging resistance and the like, and the viscose enables the connection among the components in a glue system to be firmer, so that the prepared glue has better performance.
4. According to the performance test results of the embodiment 1 and the embodiments 13-16, the following results can be obtained: the properties of examples 1, 13 and 14 are superior to those of examples 15-16, which shows that: when the initiator is a mixture of benzoyl peroxide and tert-butyl perbenzoate with the weight ratio of (1-2) to 1, the two are cooperated to be used as the initiator in the glue system, so that the polymerization initiation effect of the system is better, and the glue is more stable.
5. According to the performance test results of the embodiment 1 and the embodiments 17-20, the following results can be obtained: the properties of examples 1, 18 and 19 are superior to those of examples 17 and 20, which shows that: the oxidized starch and the silicone oil are added for a plurality of times, so that the oxidized starch, the silicone oil and the glue system can react and mix more fully, and the glue with better performance is prepared.
6. According to the performance test results of the embodiment 1 and the embodiments 21 to 22, it can be seen that: the properties of example 1 are all superior to those of examples 21-22, which shows that: all the performances of the three groups of samples are better, which shows that the oxidized starch prepared by the method has the best performance, so that the prepared glue has better performance.
7. According to the performance test results of the embodiment 1 and the embodiments 23-25, the following results can be obtained: the properties of example 1 are all superior to those of examples 23-25, indicating that: when the oxidized starch is prepared by oxidizing one of potato starch, corn starch and wheat starch, the performance of the prepared glue is better.
8. According to the performance test results of the example 1 and the comparative examples 1 to 3, the following results can be obtained: the properties of example 1 are superior to those of comparative examples 1-3, indicating that: the oxidized starch has good viscosity, on one hand, the bonding performance of the glue can be improved, on the other hand, the oxidized starch is adhered among the components, so that the bonding strength among the components is increased, the impermeability of the glue is improved, and external water is not easy to enter the inside of the glue, so that the waterproof performance of the glue is improved; the silicone oil has good hydrophobicity, and the molecular surface of the silicone oil is smooth and easy to migrate to the surface of glue water, so that a hydrophobic layer is formed on the surface of the glue water, and the waterproof performance of the glue water is improved; after the waterproof performance is improved, the comprehensive performance of the glue is also improved.
9. According to the performance test results of the example 1 and the comparative examples 4 to 5, the following results can be obtained: the properties of example 1 are superior to those of comparative examples 4-5, indicating that: after the starch is oxidized, the polymerization degree of the starch is reduced, and other components in a glue system can easily enter the interior of starch molecules, so that a net structure is formed, the bonding strength among the components is enhanced, and the performance of the glue is improved.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (7)
1. The glue of the masking tape is characterized in that: the feed is prepared from the following raw materials in parts by weight: 20-30 parts of butyl acrylate, 30-40 parts of isooctyl acrylate, 3-5 parts of acrylic acid, 5-10 parts of tackifier, 2-4 parts of coupling agent, 5-8 parts of initiator, 5-10 parts of priming solution, 10-16 parts of oxidized starch and 7-9 parts of silicone oil;
the tackifier is a mixture of rosin resin, styrene-butadiene rubber and viscose fibers with the weight percentage of 5 (3-5) to 1-3.
2. The glue of masking tape as claimed in claim 1, characterized in that: the oxidized starch is prepared by oxidizing one of potato starch, corn starch and wheat starch.
3. The glue of masking tape as claimed in claim 1, characterized in that: the preparation method of the oxidized starch comprises the following steps: 1) adding starch accounting for 40-60% of the water by weight into water with the temperature of 30-45 ℃, then stirring for 30-50min, then adding ferrous sulfate accounting for 0.1-0.15% of the water by weight, and continuously stirring for 10-20min to prepare starch milk:
2) continuously dropwise adding 8-12% by mass of sodium hydroxide solution into the starch milk, and keeping the stirring state until the pH value of the starch milk is 7-8;
3) adding 20-30% of hydrogen peroxide solution by mass fraction into the starch milk in the step 2), stirring for 30-40min, then continuously adding 8-12% of sodium hydroxide solution by mass fraction, and keeping the stirring state until the pH value of the starch milk is 9-10.
4. The glue of masking tape as claimed in claim 1, characterized in that: the initiator is a mixture of benzoyl peroxide and tert-butyl perbenzoate with the weight ratio of (1-2) to 1.
5. The glue of masking tape according to claim 1, characterized in that: the coupling agent is a silane coupling agent.
6. A preparation method of the glue of the masking tape of any one of claims 1-5, characterized by comprising the following steps: the method comprises the following steps:
1) and weighing raw materials: weighing the following raw materials in parts by weight: butyl acrylate, isooctyl acrylate, acrylic acid, tackifier, coupling agent, initiator, priming solution, oxidized starch and silicone oil;
2) primary mixing of main materials: adding butyl acrylate, isooctyl acrylate and acrylic acid into a reaction vessel, and stirring and reacting for 1-2 hours at 70-80 ℃ to obtain a mixture I;
3) and initiating reaction: adding a tackifier and a coupling agent into the first mixture, uniformly mixing an initiator and an initiation liquid, adding the mixture into the first mixture, heating to the temperature of 110-;
4) and improvement treatment: and cooling the mixture II to 70-80 ℃, adding oxidized starch and silicone oil into the mixture II, stirring and mixing for 1-2h, and then standing for 30-60min under heat preservation to obtain the glue of the masking tape.
7. The preparation method of the glue of the masking tape as claimed in claim 6, characterized in that: in the step 4) improvement treatment, the oxidized starch and the silicone oil are uniformly added into the mixture II at equal time intervals in an amount of 3-5 parts.
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| CN113913137A (en) * | 2021-10-20 | 2022-01-11 | 湖南弘擎电子材料科技有限公司 | Acrylate pressure-sensitive adhesive with excellent adhesive property and preparation method thereof |
| CN113888954A (en) * | 2021-10-21 | 2022-01-04 | 杭州艾普莱标识制造有限公司 | Novel adhesive sticker structure and preparation process |
| CN114350278B (en) * | 2021-12-27 | 2023-01-24 | 四川大学 | Paste for repairing and mounting paper cultural relics and preparation method and application method thereof |
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| CN101245229A (en) * | 2008-01-15 | 2008-08-20 | 广州宏昌胶粘带厂 | Pressure-sensitive adhesive using starch as matrix material and manufacture method thereof |
| CN102559108A (en) * | 2012-01-17 | 2012-07-11 | 合肥工业大学 | Preparation method for water-fast starch adhesive with high initial adhesion |
| CN103173157A (en) * | 2013-03-25 | 2013-06-26 | 上海晶华粘胶制品发展有限公司 | Hydrophobic masking tape and preparation method thereof |
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| DE10039388A1 (en) * | 2000-08-11 | 2002-02-21 | Basf Ag | Starchy polymer dispersions |
| CN110028910B (en) * | 2019-04-23 | 2021-07-13 | 武汉友发包装科技有限公司 | High-temperature-resistant masking tape and preparation method thereof |
| CN111205793A (en) * | 2020-02-25 | 2020-05-29 | 上海翔图纸品有限公司 | Glue special for paper products and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101245229A (en) * | 2008-01-15 | 2008-08-20 | 广州宏昌胶粘带厂 | Pressure-sensitive adhesive using starch as matrix material and manufacture method thereof |
| CN102559108A (en) * | 2012-01-17 | 2012-07-11 | 合肥工业大学 | Preparation method for water-fast starch adhesive with high initial adhesion |
| CN103173157A (en) * | 2013-03-25 | 2013-06-26 | 上海晶华粘胶制品发展有限公司 | Hydrophobic masking tape and preparation method thereof |
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Denomination of invention: A type of adhesive for masking paper tape and its preparation method Effective date of registration: 20231212 Granted publication date: 20220531 Pledgee: Industrial and Commercial Bank of China Zhongjiang Branch Pledgor: Sichuan kaiwuhua packaging material Co.,Ltd. Registration number: Y2023980070545 |