CN111154436A - TPE glue, preparation process and use method - Google Patents
TPE glue, preparation process and use method Download PDFInfo
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- CN111154436A CN111154436A CN202010060488.2A CN202010060488A CN111154436A CN 111154436 A CN111154436 A CN 111154436A CN 202010060488 A CN202010060488 A CN 202010060488A CN 111154436 A CN111154436 A CN 111154436A
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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
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
- C09J153/025—Vinyl aromatic monomers and conjugated dienes modified
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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
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
- C09J133/12—Homopolymers or copolymers of methyl methacrylate
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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
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention relates to the technical field of glue, in particular to TPE glue, a preparation process and a use method. The TPE glue comprises glue A and glue B, wherein the glue A comprises the following components in parts by mass: 60-80 parts of SEBS; 4-8 parts of a phase solvent; 4-8 parts of a butylbenzene solvent; 15-25 parts of white oil; the B glue comprises the following components in parts by weight: 25-30 parts of polymethyl methacrylate; 60-70 parts of ethyl cyanoacetate; 8-12 parts of hydroxypropyl cellulose acetate; 2-3 parts of a polymerization inhibitor; 1-2 parts of silicon dioxide; 12-16 parts of a hardening agent; 6-8 parts of a reinforcing agent. Because the compatibility between metal and TPE material is poor, the common glue is difficult to bond. According to the application, the B glue is smeared on the surface of the metal and is rapidly cured after meeting moisture, so that a layer of B glue is formed on the surface of the metal. The glue A is smeared on the glue B, and the TPE is covered on the glue A to be pressed, so that the glue A can be used for bonding the TPE and the metal by taking the glue B as an intermediate medium, and the adhesive strength is higher and the stability is stronger.
Description
Technical Field
The invention relates to the technical field of glue, in particular to TPE glue, a preparation process and a use method.
Background
Thermoplastic elastomer TPE/TPR, also known as elastomer or elastomer. The product not only has the excellent performances of high elasticity, aging resistance and oil resistance of the traditional cross-linked vulcanized rubber, but also has the characteristics of convenient processing and wide processing mode of common plastics.
The TPE has good service performance, so the TPE has wide application in various industries. However, in the process of use, a problem generally exists in that the TPE has poor adhesion with other materials, and adhesion is difficult to realize or the adhesion strength is poor. In the prior art, in order to improve the adhesion between the TPE and other materials, the components of the TPE material need to be adjusted, and the types of the materials are increased, so that the TPE material has certain compatibility with the materials to be adhered and glue, and the effect of improving the adhesion is realized.
However, when the TPE material needs to be bonded to the metal, the compatibility between the TPE material and the metal is very poor, and even though the composition of the TPE material is adjusted, the effect of improving the compatibility between the TPE material and the metal is very limited, so that it is necessary to develop a glue for bonding the TPE material and the metal.
Disclosure of Invention
The invention aims to provide TPE glue which has the advantages that the TPE glue can be used for bonding TPE and metal, and the bonding strength is high.
The above object of the present invention is achieved by the following technical solutions:
a TPE glue, which comprises glue A and glue B,
the A glue comprises the following components in parts by mass:
60-80 parts of SEBS;
4-8 parts of a phase solvent;
4-8 parts of a butylbenzene solvent;
15-25 parts of white oil;
the B glue comprises the following components in parts by weight:
25-30 parts of polymethyl methacrylate;
60-70 parts of ethyl cyanoacetate;
8-12 parts of hydroxypropyl cellulose acetate;
2-3 parts of a polymerization inhibitor;
1-2 parts of silicon dioxide;
12-16 parts of a hardening agent;
6-8 parts of a reinforcing agent.
By adopting the technical scheme, the common glue is difficult to bond because the compatibility of the metal and the TPE material is poor. According to the application, the B glue is smeared on the surface of the metal and is rapidly cured after meeting moisture, so that a layer of B glue is formed on the surface of the metal. And then coating the glue A on the glue B, and covering the TPE on the glue A for pressing, so that the glue A can be used for bonding the TPE and the metal by taking the glue B as an intermediate medium. For current glue in, direct through a glue TPE and metal that bonds, utilize A glue, the mode that B glued in this application bonds, bonding strength is higher, and stability is stronger.
Preferably, the polymerization inhibitor is hydroquinone.
By adopting the technical scheme, phenol is oxidized into benzoquinone, and the benzoquinone can capture free radicals, so that a certain polymerization inhibition effect is achieved, and sufficient time is provided for uniformly coating the B glue.
Preferably, the hardening agent is modified sepiolite.
Preferably, the modified sepiolite is modified by the following steps:
a1: adding 10-20 parts of polyacrylamide, 3-5 parts of ammonium persulfate, 16-20 parts of N, N ' -methylene bisacrylamide, 10-16 parts of N, N, N ', N ' -tetramethyl ethylenediamine and 20-26 parts of sodium tripolyphosphate into a stirrer, and uniformly stirring for 30 min;
a2, adding 60-80 parts of β -sepiolite into a stirrer, heating to 50-60 ℃, and uniformly stirring for 30 min.
Through adopting above-mentioned technical scheme, sepiolite has the layer chain structure, and under the wet condition, very soft, in case dry, hardness promotes immediately to time B glues and has certain intensity after the drying, glues for gluing the surface coating A at B and provides good condition. Meanwhile, after the glue A and the glue B are dried, the TPE glue shows certain hardness and strength, so that the stability and reliability after bonding are ensured. Meanwhile, the sepiolite has strong adsorption capacity and can adsorb silicon dioxide and reinforcing agents, so that the silicon dioxide and the reinforcing agents are more uniformly distributed in the glue, and the stability of the TPE glue is further improved.
The modified sepiolite has a remarkable catalytic action on the hardening of the glue B, and can quickly harden the glue B in a certain time.
Preferably, the enhancer is shell powder.
By adopting the technical scheme, the shell powder is in a porous fibrous double-helix structure and also has certain adsorption capacity, and part of silicon dioxide can be adsorbed by the shell powder. After the drying, can regard as the skeleton of TPE glue with the sepiolite jointly, support behind the TPE glue drying, improve the adhesion of TPE glue.
Preferably, the shell powder is modified nano shell powder, and the particle size of the shell powder is 40-80 nm.
Preferably, the shell powder is modified by the following steps:
b1: pulverizing shell into 0.1-0.5mm shell powder with ball mill;
b2: calcining and puffing shell powder in a high-temperature resistance furnace at 1200 ℃;
b3: and (3) carrying out nano-crushing treatment on the calcined and puffed shell powder by using a nano-crusher.
By adopting the technical scheme, the shell powder with the particle size of 40-80nm can be better dispersed in other components, and meanwhile, the reinforced bonding effect on the glue is further enhanced. After calcination and puffing treatment, the shell powder is modified and activated, so that peculiar smell emitted by other components in the glue can be adsorbed, and the shell powder has strong antibacterial and bactericidal effects, thereby reducing corrosion of bacteria to the glue, ensuring reliable and stable performance of the glue after solidification, and prolonging the service life of the glue.
Preferably, the silicon dioxide is nano silicon dioxide, and the particle size of the nano silicon dioxide is 30-60 nm.
By adopting the technical scheme, the silicon dioxide is the silicon dioxide with the particle size of 30-60nm, and the silicon dioxide is easier to disperse in the sepiolite, so that the silicon dioxide is uniformly distributed in the TPE glue, and meanwhile, the smaller particle size is more favorable for improving the mechanical property of the glue after solidification, and the bonding reliability is improved.
The second purpose of the invention is to provide a preparation process of TPE glue.
A preparation process of TPE glue comprises the following steps:
c1: preparation of glue A:
c1-1: adding a butylbenzene solvent and SEBS into a stirrer, and uniformly stirring for 30 min;
c1-2: then adding the compatilizer and the white oil into a stirrer to be uniformly stirred for 2 hours;
c1-3: the product of C1-2 was stored in a sealed manner.
C2: b, preparation of glue B:
c2-1: adding polymethyl methacrylate, ethyl cyanoacetate, hydroxypropyl cellulose acetate and a reinforcing agent into a reaction kettle, uniformly stirring, heating to 60-80 ℃, and reacting for 1-2 h;
c2-2: adding the product of C2-1 into polymerization inhibitor, silicon dioxide and hardener, and carrying out reduced pressure distillation at 160-180 ℃;
c2-3: the product of C2-2 was stored in a vacuum-tight seal.
By adopting the technical scheme, the glue A and the glue B are respectively prepared and then are sealed for storage, so that the glue is convenient to use later.
The third purpose of the invention is to provide a using method of TPE glue.
A use method of TPE glue comprises the following steps:
d1: uniformly coating the glue B on the surface of a metal product, and drying for 10-15S;
d2: and uniformly coating the glue A on the surface of the dried glue B, quickly pressing the TPE product on the glue A, and pressing for 15-20 seconds to finish bonding.
By adopting the technical scheme, the adhesive B is uniformly coated on the surface of a metal product, and is quickly cured and adhered to the surface of the metal under the action of moisture in the air. After the glue B is dried, the glue A is smeared on the surface of the glue B, and the TPE product is pressed on the glue A, so that firm bonding of the TPE and the metal can be realized by the glue.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the adhesive is used for bonding the metal material and the TPE material, and the bonding is firm;
2. the bonding stability is strong, and the bonding service life is long.
Drawings
FIG. 1 is a flow chart of the preparation process of glue A;
FIG. 2 is a flow chart of the preparation process of the B glue.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Firstly, raw material and equipment sources:
the raw materials used in the application are all commercial chemical raw materials;
the equipment used is commercially available.
II, the TPE glue comprises the following components in percentage by weight:
the TPE glue comprises glue A and glue B.
The A glue comprises the following components in parts by mass:
60-80 parts of SEBS;
4-8 parts of a phase solvent;
4-8 parts of a butylbenzene solvent;
15-25 parts of white oil;
the B glue comprises the following components in parts by weight:
25-30 parts of polymethyl methacrylate;
60-70 parts of ethyl cyanoacetate;
8-12 parts of hydroxypropyl cellulose acetate;
2-3 parts of a polymerization inhibitor;
1-2 parts of silicon dioxide;
12-16 parts of a hardening agent;
6-8 parts of a reinforcing agent.
Wherein the polymerization inhibitor is hydroquinone;
the hardening agent is modified sepiolite;
the reinforcing agent is modified nano shell powder with the particle size of 40-80 nm.
Thirdly, the process:
1. the preparation process of the modified sepiolite comprises the following steps:
a1: adding 10-20 parts of polyacrylamide, 3-5 parts of ammonium persulfate, 16-20 parts of N, N ' -methylene bisacrylamide, 10-16 parts of N, N, N ', N ' -tetramethyl ethylenediamine and 20-26 parts of sodium tripolyphosphate into a stirrer, and uniformly stirring for 30 min;
a2, adding 60-80 parts of β -sepiolite into a stirrer, heating to 50-60 ℃, and uniformly stirring for 30 min.
2. The preparation process of the modified nano shell powder comprises the following steps:
b1: pulverizing shell into 0.1-0.5mm shell powder with ball mill;
b2: calcining and puffing shell powder in a high-temperature resistance furnace at 1200 ℃;
b3: and (3) carrying out nano-crushing treatment on the calcined and puffed shell powder by using a nano-crusher.
3. The preparation process of the TPE glue comprises the following steps:
c1: preparation of glue A:
c1: preparation of glue A:
c1-1: adding a butylbenzene solvent and SEBS into a stirrer, and uniformly stirring for 30 min;
c1-2: then adding the compatilizer and the white oil into a stirrer to be uniformly stirred for 2 hours;
c1-3: the product of C1-2 was stored in a sealed manner.
C2: b, preparation of glue B:
c2-1: adding polymethyl methacrylate, ethyl cyanoacetate, hydroxypropyl cellulose acetate and a reinforcing agent into a reaction kettle, uniformly stirring, heating to 60-80 ℃, and reacting for 1-2 h;
c2-2: adding the product of C2-1 into polymerization inhibitor, silicon dioxide and hardener, and carrying out reduced pressure distillation at 160-180 ℃;
c2-3: the product of C2-2 was stored in a vacuum-tight seal.
4. The use method of the TPE glue comprises the following steps:
a use method of TPE glue comprises the following steps:
d1: uniformly coating the glue B on the surface of a metal product, and drying for 10-15S;
d2: and uniformly coating the glue A on the surface of the dried glue B, quickly pressing the TPE product on the glue A, and pressing for 15-20 seconds to finish bonding.
And uniformly coating the adhesive B on the surface of a metal product, and quickly curing and adhering the adhesive B on the surface of the metal under the action of moisture in the air. After the glue B is dried, the glue A is smeared on the surface of the glue B, and the TPE product is pressed on the glue A, so that firm bonding of the TPE and the metal can be realized by the glue.
Because the compatibility between metal and TPE material is poor, the common glue is difficult to bond. According to the application, the B glue is smeared on the surface of the metal and is rapidly cured after meeting moisture, so that a layer of B glue is formed on the surface of the metal. And then coating the glue A on the glue B, and covering the TPE on the glue A for pressing, so that the glue A can be used for bonding the TPE and the metal by taking the glue B as an intermediate medium. For current glue in, direct through a glue TPE and metal that bonds, utilize A glue, the mode that B glued in this application bonds, bonding strength is higher, and stability is stronger.
Fourth, examples and comparative examples:
examples 1,
1) The components and contents are as follows:
the TPE glue comprises glue A and glue B.
The A glue comprises the following components in parts by mass:
60 parts of SEBS;
4 parts of a phase solvent;
4 parts of a butylbenzene solvent;
15 parts of white oil;
the B glue comprises the following components in parts by weight:
25 parts of polymethyl methacrylate;
60 parts of ethyl cyanoacetate;
8 parts of hydroxypropyl cellulose acetate;
2 parts of a polymerization inhibitor;
1 part of silicon dioxide;
12 parts of a hardening agent;
6 parts of a reinforcing agent.
Wherein the polymerization inhibitor is hydroquinone;
the hardening agent is modified sepiolite;
the reinforcing agent is modified nano shell powder with the particle size of 40 nm.
2) The processing technology comprises the following steps:
1. the preparation process of the modified sepiolite comprises the following steps:
a1: adding 10-20 parts of polyacrylamide, 3-5 parts of ammonium persulfate, 16-20 parts of N, N ' -methylene bisacrylamide, 10-16 parts of N, N, N ', N ' -tetramethyl ethylenediamine and 20-26 parts of sodium tripolyphosphate into a stirrer, and uniformly stirring for 30 min;
a2, adding 60-80 parts of β -sepiolite into a stirrer, heating to 50-60 ℃, and uniformly stirring for 30 min.
2. The preparation process of the modified nano shell powder comprises the following steps:
b1: pulverizing shell into 0.1-0.5mm shell powder with ball mill;
b2: calcining and puffing shell powder in a high-temperature resistance furnace at 1200 ℃;
b3: and (3) carrying out nano-crushing treatment on the calcined and puffed shell powder by using a nano-crusher.
3. The preparation process of the TPE glue comprises the following steps:
c1: preparation of glue A:
c1: preparation of glue A:
c1-1: adding a butylbenzene solvent and SEBS into a stirrer, and uniformly stirring for 30 min;
c1-2: then adding the compatilizer and the white oil into a stirrer to be uniformly stirred for 2 hours;
c1-3: the product of C1-2 was stored in a sealed manner.
C2: b, preparation of glue B:
c2-1: adding polymethyl methacrylate, ethyl cyanoacetate, hydroxypropyl cellulose acetate and a reinforcing agent into a reaction kettle, uniformly stirring, heating to 60-80 ℃, and reacting for 1-2 h;
c2-2: adding the product of C2-1 into polymerization inhibitor, silicon dioxide and hardener, and carrying out reduced pressure distillation at 160-180 ℃;
c2-3: the product of C2-2 was stored in a vacuum-tight seal.
Examples 2,
1) The components and contents are as follows:
the TPE glue comprises glue A and glue B.
The A glue comprises the following components in parts by mass:
70 parts of SEBS;
6 parts of a phase solvent;
6 parts of a butylbenzene solvent;
20 parts of white oil;
the B glue comprises the following components in parts by weight:
28 parts of polymethyl methacrylate;
65 parts of ethyl cyanoacetate;
10 parts of hydroxypropyl cellulose acetate;
2.5 parts of a polymerization inhibitor;
1.5 parts of silicon dioxide;
14 parts of a hardening agent;
and 7 parts of a reinforcing agent.
Wherein the polymerization inhibitor is hydroquinone;
the hardening agent is modified sepiolite;
the reinforcing agent is modified nano shell powder with the particle size of 40 nm.
2) The processing technology comprises the following steps: in keeping with example 1.
Examples 3,
1) The components and contents are as follows:
the TPE glue comprises glue A and glue B.
The A glue comprises the following components in parts by mass: 80 parts of SEBS;
8 parts of a phase solvent;
8 parts of a butylbenzene solvent;
25 parts of white oil;
the B glue comprises the following components in parts by weight:
30 parts of polymethyl methacrylate;
70 parts of ethyl cyanoacetate;
12 parts of hydroxypropyl cellulose acetate;
3 parts of a polymerization inhibitor;
2 parts of silicon dioxide;
16 parts of a hardening agent;
and 8 parts of a reinforcing agent.
Wherein the polymerization inhibitor is hydroquinone;
the hardening agent is modified sepiolite;
the reinforcing agent is modified nano shell powder with the particle size of 40 nm.
2) The processing technology comprises the following steps: in keeping with example 1.
Examples 4,
The embodiment is different from the embodiment 2 only in that the reinforcing agent is modified nano shell powder with the particle size of 60 nm.
Examples 5,
The embodiment is different from the embodiment 2 only in that the reinforcing agent is modified nano shell powder with the particle size of 80 nm.
Comparative examples 1,
This comparative example differs from example 2 only in that the particle size of the reinforcing agent is 20 nm.
Comparative examples 2,
This comparative example differs from example 2 only in that the particle size of the reinforcing agent is 100 nm.
Comparative examples 3,
This comparative example differs from example 2 only in that the hardener used was ordinary sepiolite.
Comparative examples 4,
This comparative example differs from example 2 only in that the hardener enhancer used was common shell powder.
Comparative examples 5,
Commercially available TPE glue.
Fifthly, test detection and data analysis:
1. detecting the bonding force and the bonding strength: fixing a steel sheet with the diameter of 30mm on a cylindrical clamp of a universal testing machine, coating 3mg of instant adhesive 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 apart at the speed of 1mm/min, measuring the bonding force and the bonding strength of the instant adhesive, and repeating five times to obtain an average value.
2. And (3) detecting the impact resistance: a free falling impact stripping test device is adopted, a pair of steel sheets are glued by instant adhesive to form a T-shaped impact stripping sample, and under the specified condition, impact force is applied to the non-glued end of the sample, so that the sample is stripped along the glue line. The impact resistance of the instant adhesive was evaluated by measuring the peel length of the test specimens.
3. And (3) detecting the aging resistance: the instant adhesive samples obtained in examples 1 to 5 and comparative examples 1 to 5 were subjected to tensile strength test, and a heat aging test was performed in a heat aging oven under the following conditions: and (3) taking out the sample at 80 ℃ for 72h, testing the tensile strength again, judging the aging resistance of the sample according to the change rate of the tensile strength, judging the sample to be poor if the change rate of the tensile strength is more than or equal to 5 percent, and judging the sample to be excellent if the change rate of the tensile strength is less than 5 percent.
According to test results, the TPE glue has the advantages that the bonding force is larger than or equal to 3kN, the bonding strength is larger than or equal to 13MPa, the impact resistance is larger than or equal to 25mm, the aging resistance is excellent, and the TPE glue has good bonding property and stability compared with the prior art and a comparative example.
4. And (3) detecting the antibacterial performance:
preparing a solid culture medium: pouring 10g of peptone, 5g of beef extract, 5g of sodium chloride, 17.5g of agar and 1000ml of distilled water into a conical flask, sterilizing for 20min by using a pressure steam sterilizer at high pressure (120 ℃, 1.5MPa), subpackaging the obtained product in a culture dish while hot, and cooling under aseptic conditions to obtain a solid culture medium.
The glue of examples 1 to 5 and comparative examples 1 to 5 was applied to the sterilized metal sheets as test samples so that the cured dimensions were (50. + -.2) mm X3 mm. Blanks were compared with sterilized polyethylene film stacks having dimensions of (50. + -.2) mm X3 mm.
The blank and the test sample were placed in sterilized flat dishes, and 1.0. + -. 0.1ml of the prepared bacterial solution was dropped onto the sample and the test sample, respectively, to prepare three replicates per set. And (3) attaching the covering film to the sample and the experimental sample by using tweezers to ensure that the bacteria liquid is uniformly dispersed on the control sample and the experimental sample. Numbering, and placing the flat dish into a constant-temperature incubator at 37 ℃ for 24 h.
After 24h, all samples were taken out, 100ml of sterilized phosphate buffer solution was added to the bottles containing the samples as an eluent (2.83g of anhydrous disodium hydrogen phosphate, 1.36g of potassium hydrogen phosphate, 1000ml of distilled water, pH adjusted to 7.0-7.2), the samples were repeatedly washed, the cover film was placed on an oscillator, shaken well, and shaken well at 200rpm for 30 min. After standing, the mixture is diluted to 1 × 103-5 × 103 cfu.ml in a gradient manner-1And inoculating the bacterial liquid onto a solid culture medium, and uniformly coating the plate. The solid medium was inverted in an incubator and incubated at 37 ℃ for 18-24 h. After the culture, the single cell grows and breeds to form bacterial colony, count the bacterial colony number, can calculate the number of containing the fungus in the sample. And comparing the bacteria-containing numbers of the blank sample and the detection sample to obtain the sterilization rate.
From the result, the TPE glue has good antibacterial effect on escherichia coli, staphylococcus aureus and salmonella, the sterilization rate is higher than 93%, and compared with common glue, the TPE glue is not easy to corrode by bacteria after being used and is long in service life.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides a TPE glue which characterized in that: comprises an A glue and a B glue,
the A glue comprises the following components in parts by mass:
60-80 parts of SEBS;
4-8 parts of a phase solvent;
4-8 parts of a butylbenzene solvent;
15-25 parts of white oil;
the B glue comprises the following components in parts by weight:
25-30 parts of polymethyl methacrylate;
60-70 parts of ethyl cyanoacetate;
8-12 parts of hydroxypropyl cellulose acetate;
2-3 parts of a polymerization inhibitor;
1-2 parts of silicon dioxide;
12-16 parts of a hardening agent;
6-8 parts of a reinforcing agent.
2. The TPE glue of claim 1, wherein: the polymerization inhibitor is hydroquinone.
3. The TPE glue of claim 1, wherein: the hardening agent is modified sepiolite.
4. The TPE glue of claim 3, wherein: the modified sepiolite is modified by the following steps:
a1: adding 10-20 parts of polyacrylamide, 3-5 parts of ammonium persulfate, 16-20 parts of N, N ' -methylene bisacrylamide, 10-16 parts of N, N, N ', N ' -tetramethyl ethylenediamine and 20-26 parts of sodium tripolyphosphate into a stirrer, and uniformly stirring for 30 min;
a2, adding 60-80 parts of β -sepiolite into a stirrer, heating to 50-60 ℃, and uniformly stirring for 30 min.
5. The TPE glue of claim 1, wherein: the reinforcing agent is shell powder.
6. The TPE glue of claim 4, wherein: the shell powder is modified nano shell powder, and the particle size of the shell powder is 40-80 nm.
7. The TPE glue of claim 6, wherein: the shell powder is modified by the following steps:
b1: pulverizing shell into 0.1-0.5mm shell powder with ball mill;
b2: calcining and puffing shell powder in a high-temperature resistance furnace at 1200 ℃;
b3: and (3) carrying out nano-crushing treatment on the calcined and puffed shell powder by using a nano-crusher.
8. The TPE glue of claim 1, wherein: the silicon dioxide is nano silicon dioxide, and the particle size of the nano silicon dioxide is 30-60 nm.
9. A preparation process of TPE glue is characterized by comprising the following steps: the method comprises the following steps:
c1: preparation of glue A:
c1-1: adding a butylbenzene solvent and SEBS into a stirrer, and uniformly stirring for 30 min;
c1-2: then adding the compatilizer and the white oil into a stirrer to be uniformly stirred for 2 hours;
c1-3: sealing and storing the product of C1-2;
c2: b, preparation of glue B:
c2-1: adding polymethyl methacrylate, ethyl cyanoacetate, hydroxypropyl cellulose acetate and a reinforcing agent into a reaction kettle, uniformly stirring, heating to 60-80 ℃, and reacting for 1-2 h;
c2-2: adding the product of C2-1 into polymerization inhibitor, silicon dioxide and hardener, and carrying out reduced pressure distillation at 160-180 ℃;
c2-3: the product of C2-2 was stored in a vacuum-tight seal.
10. The use method of the TPE glue is characterized by comprising the following steps: the method comprises the following steps:
d1: uniformly coating the glue B on the surface of a metal product, and drying for 10-15S;
d2: and uniformly coating the glue A on the surface of the dried glue B, quickly pressing the TPE product on the glue A, and pressing for 15-20 seconds to finish bonding.
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| JPS55151074A (en) * | 1979-05-16 | 1980-11-25 | Toagosei Chem Ind Co Ltd | Adhesive composition |
| CN102994022A (en) * | 2012-10-31 | 2013-03-27 | 安徽东方金河精密机械制造有限公司 | Instant adhesive |
| CN106349984A (en) * | 2016-08-24 | 2017-01-25 | 湖南浩森胶业有限公司 | Glue production process |
| CN108342138A (en) * | 2016-04-06 | 2018-07-31 | 安溪县智睿电子商务有限公司 | A kind of preparation method of modified oyster shell whiting |
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Patent Citations (4)
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|---|---|---|---|---|
| JPS55151074A (en) * | 1979-05-16 | 1980-11-25 | Toagosei Chem Ind Co Ltd | Adhesive composition |
| CN102994022A (en) * | 2012-10-31 | 2013-03-27 | 安徽东方金河精密机械制造有限公司 | Instant adhesive |
| CN108342138A (en) * | 2016-04-06 | 2018-07-31 | 安溪县智睿电子商务有限公司 | A kind of preparation method of modified oyster shell whiting |
| CN106349984A (en) * | 2016-08-24 | 2017-01-25 | 湖南浩森胶业有限公司 | Glue production process |
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