CN112552832A - Pressure-sensitive heat-sealing adhesive tape and preparation method thereof - Google Patents
Pressure-sensitive heat-sealing adhesive tape and preparation method thereof Download PDFInfo
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- CN112552832A CN112552832A CN202011439256.4A CN202011439256A CN112552832A CN 112552832 A CN112552832 A CN 112552832A CN 202011439256 A CN202011439256 A CN 202011439256A CN 112552832 A CN112552832 A CN 112552832A
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- pressure
- sensitive
- curing agent
- adhesive tape
- sensitive adhesive
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- 239000012945 sealing adhesive Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 67
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 47
- 239000004744 fabric Substances 0.000 claims abstract description 17
- 239000004814 polyurethane Substances 0.000 claims abstract description 17
- 229920002635 polyurethane Polymers 0.000 claims abstract description 17
- 239000012943 hotmelt Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 238000013329 compounding Methods 0.000 claims abstract description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 30
- 239000002390 adhesive tape Substances 0.000 claims description 20
- 229920000058 polyacrylate Polymers 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000003963 antioxidant agent Substances 0.000 claims description 9
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- 239000012948 isocyanate Substances 0.000 claims description 7
- 150000002513 isocyanates Chemical class 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- -1 alicyclic amine Chemical class 0.000 claims description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000001954 sterilising effect Effects 0.000 abstract description 10
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 10
- 230000032683 aging Effects 0.000 abstract description 8
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002861 polymer material Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- 230000001681 protective effect Effects 0.000 description 9
- 238000007789 sealing Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/21—Paper; Textile fabrics
-
- 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
-
- 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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
-
- 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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/26—Presence of textile or fabric
- C09J2400/263—Presence of textile or fabric in the substrate
-
- 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
- C09J2475/00—Presence of polyurethane
- C09J2475/003—Presence of polyurethane in the primer coating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a preparation method of a pressure-sensitive heat-sealing adhesive tape, and relates to the technical field of high polymer materials. The preparation method of the pressure-sensitive heat-sealing adhesive tape comprises the following steps: (1) thermally compounding the polyurethane waterproof coating on the base cloth to obtain a cloth base material; (2) uniformly mixing the hot-melt pressure-sensitive adhesive and the closed latent curing agent at 25-30 ℃ to obtain a mixture; (3) and (3) coating the mixture obtained in the step (2) on the side, containing the waterproof coating, of the cloth base material obtained in the step (1) to obtain the pressure-sensitive heat-sealing adhesive tape. The pressure-sensitive heat-sealing adhesive tape provided by the invention can resist 60-degree damp heat aging and ethylene oxide sterilization, and has the advantage of low-temperature quick use.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a pressure-sensitive heat-sealing adhesive tape and a preparation method thereof.
Background
The protective clothing adhesive tape in the market is generally formed by combining a base material/a base film/base cloth with a hot melt adhesive, and when the protective clothing adhesive tape is used, the protective clothing adhesive tape can be sealed only by heating to more than 300 ℃ by using an air heater at a speed of 8-15m/min and pressurizing and heat-sealing; can not be used quickly and at low temperature. Pressure-sensitive adhesives on the market are generally rarely used as heat-sealing tapes and are substantially incapable of resisting 60 ℃ aging and of being over-sterilized. Therefore, the heat-seal tapes on the market today have the common problems: the sealing can be realized only by heating and pressurizing through a hot air blower; the glue cannot be used quickly and at low temperature, the operation temperature is high, and the glue pressing speed is low.
Disclosure of Invention
Based on the above, the invention aims to overcome the defects of the prior art and provide the pressure-sensitive heat-sealing adhesive tape which can resist 60 ℃ damp-heat aging, resist ethylene oxide sterilization and can be used quickly at low temperature.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a preparation method of a pressure-sensitive heat-sealing adhesive tape comprises the following steps:
(1) thermally compounding the polyurethane waterproof coating on the base cloth to obtain a cloth base material;
(2) uniformly mixing the hot-melt pressure-sensitive adhesive and the closed latent curing agent at 25-30 ℃ to obtain a mixture;
(3) and (3) coating the mixture obtained in the step (2) on the side, containing the waterproof coating, of the cloth base material obtained in the step (1) to obtain the pressure-sensitive heat-sealing adhesive tape.
The hot-melt pressure-sensitive adhesive is matched with the closed latent curing agent, wherein the hot-melt pressure-sensitive adhesive is separately provided by the invention and is prepared by the formula of the invention; and a creative application method of adding the latent curing agent again in the glue pressing process, and the matching of all the methods obtains the pressure-sensitive heat-sealing adhesive tape which can resist 60 ℃ of damp-heat aging and epoxy ethane sterilization and can be used quickly at low temperature.
Preferably, in the mixture obtained in the step (2), the weight ratio of the hot-melt pressure-sensitive adhesive to the blocked latent curing agent is as follows: hot-melting the pressure-sensitive adhesive: blocked latent curing agent 80-130: 0.01-0.1.
Preferably, the hot melt pressure sensitive adhesive comprises the following components in parts by weight: 80-130 parts of resin type pressure-sensitive adhesive, 0.01-1.5 parts of curing agent and 0.01-0.4 part of antioxidant;
the inventor finds out through a large number of creative experiments that: the adhesive tape has certain initial viscosity, good adhesion, water resistance, permeability resistance, low temperature resistance and cold resistance to protective clothing; the adhesive property of the pressure-sensitive adhesive tape to protective clothing can be greatly improved by combining the use of the curing agent, and the high temperature resistance, sterilization resistance and weather resistance of the adhesive tape are improved; therefore, the collocation of the resin type pressure sensitive adhesive, the curing agent and the antioxidant is selected to form the specific hot melt pressure sensitive adhesive.
Further preferably, the hot melt pressure sensitive adhesive comprises the following components in parts by weight: 90-110 parts of resin type pressure-sensitive adhesive, 0.05-1.0 part of curing agent and 0.05-0.2 part of antioxidant.
More preferably, the hot melt pressure sensitive adhesive comprises the following components in parts by weight: 100 parts of resin type pressure-sensitive adhesive, 0.8 part of curing agent and 0.1 part of antioxidant.
Preferably, the resin type pressure-sensitive adhesive is a mixture of polyurethane modified polyacrylate pressure-sensitive adhesive and styrene type pressure-sensitive adhesive, wherein the weight ratio of the polyurethane modified polyacrylate pressure-sensitive adhesive to the styrene type pressure-sensitive adhesive is as follows: polyurethane modified polyacrylate pressure-sensitive adhesive: 70-100:10-30 of styrene pressure-sensitive adhesive;
the inventor finds out through a large amount of creative research that: the more the usage of the styrene pressure-sensitive adhesive, the greater the initial viscosity of the adhesive tape, the more beneficial to the initial bonding, but the more the usage of the styrene pressure-sensitive adhesive, the worse temperature resistance, the worse sterilization resistance and the worse weather resistance of the adhesive tape; the more the main amount of the polyurethane modified polyacrylate pressure-sensitive adhesive and the curing agent are matched, the better the temperature resistance, sterilization resistance and weather resistance of the adhesive tape are.
The curing agent is a hydroxyl acrylic resin curing agent; the antioxidant is at least one of antioxidant 1010, antioxidant 1076 and 2, 6-di-tert-butyl-p-cresol.
Preferably, the hydroxy acrylic resin curing agent is at least one of aliphatic amine curing agent, alicyclic amine curing agent and low molecular polyamide.
Further preferably, the weight ratio of the polyurethane modified polyacrylate pressure-sensitive adhesive to the styrene pressure-sensitive adhesive is as follows: polyurethane modified polyacrylate pressure-sensitive adhesive: styrene pressure sensitive adhesive 80: 20.
Preferably, the polyurethane modified polyacrylate pressure-sensitive adhesive is HS1061 or HS1622, and the styrene pressure-sensitive adhesive is at least one of 1212YN, 108, 1203S and 1655; wherein, the polyurethane modified polyacrylate pressure-sensitive adhesive is commercially available and purchased from Guangzhou Huishi technology Co., Ltd; the styrene-based pressure sensitive adhesives are commercially available and purchased from Guangdong Tao New materials science and technology GmbH.
Preferably, the blocked latent curing agent is a blocked isocyanate curing agent, wherein the blocked isocyanate curing agent is at least one of YL-3175SN, YL-3175, Yingda Gusasa B1358A and Bartonne Trixene BI 7982.
YL-3175SN and YL-3175 are commercially available from JIALO CHEMICAL; the antioxidant 1010, the antioxidant 1076 and the 2, 6-di-tert-butyl-p-cresol are all commercially available and purchased from Kyon chemical Co., Ltd.
The invention creatively uses the closed latent curing agent in the pressure-sensitive adhesive tape to ensure that the adhesive tape has the following latency: under the condition of normal temperature, the closed latent curing agent does not participate in reaction within a short time (15 days), the adhesive tape does not react with moisture in the air or the bonded material protective clothing, and has a conventional use function, but the closed curing agent releases active NCO groups to react with the protective clothing fabric to form cross-linked and stable chemical bonds with the time of prolonging (for example, more than 1 month) or heating the adhesive tape to 70-150 ℃, so that the temperature resistance and sterilization resistance of the adhesive tape to the fabric are improved.
Preferably, the blocked isocyanate curing agent is a mixture of YL-3175 and Yingchuanggusa B1358A, wherein the weight ratio of YL-3175 to Yingchuanggusa B1358A is as follows: YL-3175: yingchuangdinggsa B1358A is 1-3: 1-2.
Further preferably, the weight ratio of YL-3175 and Yingchuanggsa B1358A is 1: 2.
In addition, the invention also provides the pressure-sensitive heat-sealing adhesive tape prepared by the preparation method of the pressure-sensitive heat-sealing adhesive tape.
Compared with the prior art, the invention has the beneficial effects that: the pressure-sensitive heat-sealing adhesive tape provided by the invention can be directly pressed at the temperature of below 100 ℃ without being used at high temperature, and meanwhile, the pressure-sensitive heat-sealing adhesive tape provided by the invention is high in use speed and can reach the speed of 20-30 meters per minute.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples.
Examples 1-5 are provided herein, with specific examples 1-5 having components and parts by weight selected as shown in tables 1 and 2:
TABLE 1 selection of Components in specific examples 1-5
TABLE 2 selection of parts by weight in specific examples 1-5
The preparation method of the pressure-sensitive heat-seal adhesive tape of the embodiment comprises the following steps of weighing the components according to the following table 1 and table 2:
(1) thermally compounding the polyurethane waterproof coating on the base cloth to obtain a cloth base material;
(2) uniformly mixing the hot-melt pressure-sensitive adhesive and the closed latent curing agent at 25-30 ℃ to obtain a mixture;
(3) and (3) coating the mixture obtained in the step (2) on the side, containing the waterproof coating, of the cloth base material obtained in the step (1) to obtain the pressure-sensitive heat-sealing adhesive tape.
The base cloth used in the invention is 200T terylene polyester taffeta cloth, and all products are obtained in the market.
Meanwhile, the application is provided with comparative examples 1 to 5, and the specific comparative examples are as follows:
the resin type pressure-sensitive adhesive in the comparative example 1 only contains polyurethane modified polyacrylate pressure-sensitive adhesive and does not contain styrene type pressure-sensitive adhesive, and the rest components, the parts by weight and the preparation method are completely the same as those in the example 5;
the resin type pressure-sensitive adhesive in the comparative example 2 is only styrene type pressure-sensitive adhesive and does not contain polyurethane modified polyacrylate pressure-sensitive adhesive, and the rest components, the parts by weight and the preparation method are completely the same as those in the example 5;
in the resin type pressure sensitive adhesive in the comparative example 3, the weight ratio of the polyurethane modified polyacrylate pressure sensitive adhesive to the styrene type pressure sensitive adhesive is as follows: polyurethane modified polyacrylate pressure-sensitive adhesive: the styrene pressure-sensitive adhesive is 60:35, and the rest components, the parts by weight and the preparation method are completely the same as the example 5;
comparative example 4 does not contain the blocked latent curing agent, and the rest components, the parts by weight and the preparation method are completely the same as those of example 5;
the closed latent curing agent in comparative example 5 is DDH-5850 (dicyandiamide curing agent), and the rest of the components, parts by weight and the preparation method are completely the same as those in example 5;
test example 1 Damp Heat aging test
And (4) testing standard: the test was carried out according to YY/T0681.1-2009 at 60 ℃ and 62% humidity, with the test standards as shown in Table 3;
and (3) testing results: the pressure-sensitive heat-seal tapes prepared in examples 1 to 5 and the pressure-sensitive heat-seal tapes of comparative examples 1 to 5 were applied to protective clothing and tested, and the test results are shown in table 4;
TABLE 3 Damp-Heat aging test standards
| Is excellent in | Good effect | In general | |
| Scoring criteria | 4 weeks without glue failure | After 3 weeks, the gel is broken | After 1 week, the gel is broken |
TABLE 4 Damp-Heat aging test results
As can be seen from tables 3 and 4, the pressure-sensitive heat-sealing tapes prepared in examples 1 to 5 have no adhesive failure after 4 weeks of humid heat aging test and still have good effect at 60 ℃ and 62% humidity, while the pressure-sensitive heat-sealing tapes of comparative examples 1 and 2 and comparative examples 4 and 5 have general humid heat resistance, which indicates that the humid heat resistance of the resin-type pressure-sensitive adhesive is poor when only one of the resin-type pressure-sensitive adhesives and the curing agent are not used in the isocyanate curing agent provided by the present invention.
Test example 2 Performance test
The pressure-sensitive heat-seal tapes prepared in examples 1 to 5 and those of comparative examples 1 to 5 were subjected to tests.
And (4) testing standard: the performance test criteria are shown in table 5:
the test results are shown in tables 6 and 7:
TABLE 5 Performance test standards
TABLE 6 evaluation results of pressure-sensitive heat-seal tapes prepared in examples 1 to 5
TABLE 7 evaluation results of pressure-sensitive heat-sealing tapes prepared in comparative examples 1 to 5
As can be seen from tables 6 and 7, the tapes for protective clothing prepared without urethane-modified polyacrylate pressure-sensitive adhesive or without blocking curing agent or the curing agent type not according to the present invention (such as comparative examples 2, 3, 4, 5) and without the blending ratio range have poor sterilization resistance, while the tapes prepared without styrene pressure-sensitive adhesive have high sterilization resistance, but have high temperature, slow speed and relatively poor water permeability resistance. The pressure-sensitive heat-sealing adhesive tape can be directly pressed at 30-100 ℃ without being used at high temperature, simultaneously has high use speed which can reach 20-30 meters per minute, and the manufactured product has better ethylene oxide sterilization resistance and water impermeability.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A preparation method of a pressure-sensitive heat-sealing adhesive tape is characterized by comprising the following steps:
(1) thermally compounding the polyurethane waterproof coating on the base cloth to obtain a cloth base material;
(2) uniformly mixing the hot-melt pressure-sensitive adhesive and the closed latent curing agent at 25-30 ℃ to obtain a mixture;
(3) and (3) coating the mixture obtained in the step (2) on the side, containing the waterproof coating, of the cloth base material obtained in the step (1) to obtain the pressure-sensitive heat-sealing adhesive tape.
2. The process for preparing a pressure-sensitive heat-seal adhesive tape according to claim 1, wherein the mixture obtained in the step (2) comprises the following hot-melt pressure-sensitive adhesive and the blocked latent curing agent in a weight ratio: hot-melting the pressure-sensitive adhesive: blocked latent curing agent 80-130: 0.01-0.1.
3. The method for preparing the pressure-sensitive heat-seal adhesive tape according to claim 2, wherein the hot-melt pressure-sensitive adhesive comprises the following components in parts by weight: 80-130 parts of resin type pressure-sensitive adhesive, 0.01-1.5 parts of curing agent and 0.01-0.4 part of antioxidant.
4. The method for preparing the pressure-sensitive heat-seal adhesive tape according to claim 3, wherein the hot-melt pressure-sensitive adhesive comprises the following components in parts by weight: 90-110 parts of resin type pressure-sensitive adhesive, 0.05-1.0 part of curing agent and 0.05-0.2 part of antioxidant.
5. The method for preparing the pressure-sensitive heat-seal adhesive tape according to claim 4, wherein the hot-melt pressure-sensitive adhesive comprises the following components in parts by weight: 100 parts of resin type pressure-sensitive adhesive, 0.8 part of curing agent and 0.1 part of antioxidant.
6. The process for producing a pressure-sensitive heat-seal adhesive tape according to any one of claims 3 to 5, wherein the resinous pressure-sensitive adhesive is a mixture of a urethane-modified polyacrylate pressure-sensitive adhesive and a styrenic pressure-sensitive adhesive, wherein the weight ratio of the urethane-modified polyacrylate pressure-sensitive adhesive to the styrenic pressure-sensitive adhesive is: polyurethane modified polyacrylate pressure-sensitive adhesive: 70-100:10-30 of styrene pressure-sensitive adhesive;
the curing agent is a hydroxyl acrylic resin curing agent; the antioxidant is at least one of antioxidant 1010, antioxidant 1076 and 2, 6-di-tert-butyl-p-cresol.
7. The method of producing a pressure-sensitive heat-seal adhesive tape according to claim 6, wherein the hydroxyacrylic resin curing agent is at least one of an aliphatic amine curing agent, an alicyclic amine curing agent, and a low-molecular polyamide.
8. The method for preparing the pressure-sensitive heat-sealing adhesive tape according to claim 1 or 2, wherein the blocked latent curing agent is a blocked isocyanate curing agent, wherein the blocked isocyanate curing agent is at least one of YL-3175SN, YL-3175, Yingshangdesanssa B1358A, and Bartonne Trixene BI 7982.
9. The method for preparing the pressure-sensitive heat-seal adhesive tape according to claim 8, wherein the blocked isocyanate curing agent is a mixture of YL-3175 and Yingshangdisa B1358A, wherein the weight ratio of YL-3175 to Yingshangdisa B1358A is as follows: YL-3175: yingchuangdinggsa B1358A is 1-3: 1-2.
10. A pressure-sensitive heat-sealing adhesive tape produced by the process for producing a pressure-sensitive heat-sealing adhesive tape according to any one of claims 1 to 9.
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