CN114479729A - Preparation method of high-strength, good-toughness and aging-resistant high-molecular hot-melt pressure-sensitive adhesive - Google Patents
Preparation method of high-strength, good-toughness and aging-resistant high-molecular hot-melt pressure-sensitive adhesive Download PDFInfo
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- CN114479729A CN114479729A CN202011154961.XA CN202011154961A CN114479729A CN 114479729 A CN114479729 A CN 114479729A CN 202011154961 A CN202011154961 A CN 202011154961A CN 114479729 A CN114479729 A CN 114479729A
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 12
- 239000012943 hotmelt Substances 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 230000032683 aging Effects 0.000 title claims description 7
- 239000002994 raw material Substances 0.000 claims abstract description 51
- 238000003756 stirring Methods 0.000 claims abstract description 46
- 239000002480 mineral oil Substances 0.000 claims abstract description 19
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 19
- 239000003381 stabilizer Substances 0.000 claims abstract description 18
- 239000003208 petroleum Substances 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 claims description 31
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 26
- 239000003292 glue Substances 0.000 claims description 22
- 239000003921 oil Substances 0.000 claims description 21
- 238000002844 melting Methods 0.000 claims description 19
- 230000008018 melting Effects 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 12
- 239000004831 Hot glue Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 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
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000010690 paraffinic oil Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000002530 phenolic antioxidant Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 7
- 239000007888 film coating Substances 0.000 claims 4
- 238000009501 film coating Methods 0.000 claims 4
- 239000008187 granular material Substances 0.000 claims 4
- 239000002245 particle Substances 0.000 claims 3
- 239000000463 material Substances 0.000 abstract description 16
- 230000003712 anti-aging effect Effects 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 3
- 239000012790 adhesive layer Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 abstract 3
- 239000010426 asphalt Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920006132 styrene block copolymer Polymers 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 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
- C09J157/00—Adhesives based on unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09J157/02—Copolymers of mineral oil hydrocarbons
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a preparation method of a high-strength, good-toughness and anti-aging high-molecular hot-melt pressure-sensitive adhesive, which comprises the following steps of providing a raw material SIS (styrene-isoprene-styrene), wherein the raw material SIS is 10-30%; 5-25% of mineral oil; 1-5% of stabilizer; SBS 5-30%; 25-65% of petroleum resin C5 or C9; and forming after multiple steps of accurate feeding and stirring, vacuumizing and cooling and forming. Compared with the prior art, the invention has the following beneficial effects: the raw materials are polymer environment-friendly materials, do not pollute the environment, are suitable for wider service environment, can both use in high temperature low temperature environment, and respond well. The heat resistance is good, and the sliding, flowing and dripping are avoided at 80 ℃; good low-temperature flexibility, and no crack at-35 ℃ of the adhesive layer. The high-molecular hot-melt pressure-sensitive adhesive prepared by the invention can be coated on a base material and rolled into a cylinder shape, can be used for building wall surfaces, roofs, culverts and the like, plays a role in preventing water leakage, and can also be used for the adhesion of plastic floors, gift box adhesion and the like.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a preparation method of a high-strength high-toughness anti-aging high-polymer hot-melt pressure-sensitive adhesive.
Background
The hot melt adhesive is a plastic adhesive, the physical state of which changes along with the change of temperature within a certain temperature range, and the chemical property of which is unchanged, is nontoxic and tasteless, and belongs to an environment-friendly chemical product. The product is solid, so the product is convenient to package, transport and store, and has no solvent, pollution and toxicity; and the production process is simple, the added value is high, the bonding strength is high, the speed is high, and the like.
The SBS modified asphalt waterproof coiled material is prepared by taking polyester felt or glass fiber felt as a base material, taking SBS rubber modified petroleum asphalt as a coating material, and adhering facing materials and isolating materials on two sides. The SBS modified asphalt waterproof coiled material is widely applied to the field of waterproof materials due to good puncture resistance, excellent tensile strength and excellent chemical stability. However, the SBS modified asphalt waterproof coiled material in the prior art still has some problems, such as: the strength is not enough, the toughness is not enough, the hardening is easy, cracks are generated, the storage and the transportation are not facilitated, the actual use requirement is not met, the peeling strength is not enough, and the adhesive can not be well bonded with concrete or a base material in use.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a preparation method of a high-strength, high-toughness and aging-resistant high-molecular hot-melt pressure-sensitive adhesive.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a high-strength, good-toughness and aging-resistant high-molecular hot-melt pressure-sensitive adhesive comprises the following steps,
a raw material preparation step, wherein the following raw material SIS is provided, and the content of the raw material SIS is 10-30%; 5-25% of mineral oil; 1-5% of stabilizer; SBS 5-30%; 25-65% of petroleum resin C5 or C9;
stirring, namely heating a reaction kettle, when the oil temperature displayed by an oil meter reaches 180 ℃, slowly adding raw materials of mineral oil, a stabilizer and SBS into the reaction kettle in sequence, then covering a reaction kettle cover, locking and introducing nitrogen for protection, controlling the air pressure to be 1.5-2.0kg/cm2, starting a reaction kettle motor for stirring, and keeping the oil temperature of the reaction kettle to be 195 plus 205 ℃;
a secondary feeding step, namely after all the fed raw materials are melted, closing an air source, opening a reaction kettle cover and feeding SIS, then covering the reaction kettle cover and locking, and continuously stirring and melting;
a third feeding step, after the SIS raw materials are melted, opening a reaction kettle cover, feeding petroleum resin C5 or C9, then covering the reaction kettle cover, locking, and continuously stirring and melting; confirming that all the raw materials are melted, and closing the heating system;
a step of vacuumizing, wherein a switch of a vacuum machine is turned on to extract air in the glue solution, the vacuumizing time is controlled to be 45-60 minutes, and the rotating speed of a motor is controlled to be 8-50 revolutions per minute;
and a cooling forming step, namely opening a discharging switch of the reaction kettle, extruding the glue solution into a glue filling mold through an extruder, naturally cooling and then packaging.
Preferably, the SIS is a styrene-isoprene-styrene block copolymer, the molecular structure is linear, the styrene content is 10% -25%, the diblock content is 0-20%, and the tensile strength is more than or equal to 10 Mpa.
Preferably, the mineral oil is a naphthenic or paraffinic oil.
Preferably, the SBS is styrene-butadiene-styrene block copolymer, the molecular structure is linear, the styrene content is 30% -40%, and the tensile strength is larger than or equal to 25 Mpa.
Preferably, the stabilizer is phenolic antioxidant 2, 6-di-tert-butyl-p-cresol.
Preferably, the stirring step requires 45 minutes or more of stirring.
Preferably, the secondary feeding step requires stirring for 30 minutes or more.
Preferably, the three feeding steps require stirring for 20 minutes or more.
Compared with the prior art, the invention has the following beneficial effects: the raw materials are polymer environment-friendly materials, do not pollute the environment, are suitable for wider service environment, can both use in high temperature low temperature environment, and respond well. The heat resistance is good, and the sliding, flowing and dripping are avoided at 80 ℃; good low-temperature flexibility, and no crack at-35 ℃ of the adhesive layer.
The hot melt adhesive raw material adopted in the invention can age or even carbonize because of too high temperature for too long time, so that the air in the adhesive liquid is pumped out under the action of vacuumizing under the condition of strictly controlling the feeding time, and no air bubbles are generated in the finished adhesive when the finished product is produced through discharging.
The high-molecular hot-melt pressure-sensitive adhesive prepared by the invention can be coated on a base material and rolled into a cylinder shape, can be used for building wall surfaces, roofs, culverts and the like, plays a role in preventing water leakage, and can also be used for the adhesion of plastic floors, gift box adhesion and the like.
Detailed Description
The invention discloses a preparation method of a high-strength, good-toughness and anti-aging high-molecular hot-melt pressure-sensitive adhesive. The hot-melt pressure-sensitive adhesive is a mixture formed by melting a plurality of raw materials at high temperature and high pressure and then cooling, and the preparation method has very accurate control requirements on temperature, pressure, cooling water temperature and the like.
In the invention, the raw materials SIS and SBS are main materials for preparing the hot melt pressure sensitive adhesive, and play a crucial decisive role in the adhesiveness, flexibility, processability and cohesive strength of the hot melt adhesive. In the embodiment of the invention, the SIS is styrene-isoprene-styrene block copolymer, the molecular structure is linear, the styrene content is 10-25%, the diblock content is 0-20%, and the tensile strength is more than or equal to 10 Mpa. SBS is styrene-butadiene-styrene block copolymer with linear molecular structure, styrene content of 30-40% and tensile strength not lower than 25 MPa. The stabilizer is phenol antioxidant 2, 6-di-tert-butyl-p-cresol. The mineral oil is a naphthenic or paraffinic oil.
The following is specifically illustrated by examples.
Example 1
Preparing raw material (weight percentage) SIS, 10%; 5% of mineral oil; 5% of a stabilizer; SBS, 30%; petroleum resin C5, 50%; heating the reaction kettle, when the oil temperature displayed by an oil meter reaches 180 ℃, slowly adding raw materials of mineral oil, a stabilizer and SBS into the reaction kettle in sequence, then covering a reaction kettle cover, locking and introducing nitrogen for protection, controlling the air pressure to be 1.5-2.0kg/cm2, starting a reaction kettle motor for stirring, and keeping the oil temperature of the reaction kettle to be 195 plus 205 ℃; stirring for more than 45 minutes until all the fed raw materials are melted, closing the gas source, opening the reaction kettle cover, feeding the SIS, then covering and locking the reaction kettle cover, and continuously stirring and melting; stirring for more than 30 minutes until the SIS raw materials are melted, opening the cover of the reaction kettle, adding petroleum resin C5, then covering the cover of the reaction kettle, locking, and continuously stirring and melting; continuing to stir for more than 20 minutes to confirm that all the raw materials are molten, and closing the heating system; opening a vacuum machine switch to extract air in the glue solution, controlling the vacuum-pumping time to be 45-60 minutes, and controlling the rotating speed of a motor to be 8-50 revolutions per minute; and opening a blanking switch of the reaction kettle, extruding the glue solution into a glue filling mold through an extruder, naturally cooling and packaging to obtain a finished product.
Example 2
Preparing raw material (weight percentage) SIS, 30%; 10% of mineral oil; 5% of a stabilizer; SBS, 5 percent; petroleum resin C5, 50%; heating the reaction kettle, when the oil temperature displayed by an oil meter reaches 180 ℃, slowly adding raw materials of mineral oil, a stabilizer and SBS into the reaction kettle in sequence, then covering a reaction kettle cover, locking and introducing nitrogen for protection, controlling the air pressure to be 1.5-2.0kg/cm2, starting a reaction kettle motor for stirring, and keeping the oil temperature of the reaction kettle to be 195 plus 205 ℃; stirring for more than 45 minutes until all the fed raw materials are melted, closing the gas source, opening the reaction kettle cover, feeding the SIS, then covering and locking the reaction kettle cover, and continuously stirring and melting; stirring for more than 30 minutes until the SIS raw materials are melted, opening the cover of the reaction kettle, adding petroleum resin C5, then covering the cover of the reaction kettle, locking, and continuously stirring and melting; continuing to stir for more than 20 minutes to confirm that all the raw materials are molten, and closing the heating system; opening a vacuum machine switch to extract air in the glue solution, controlling the vacuum-pumping time to be 45-60 minutes, and controlling the rotating speed of a motor to be 8-50 revolutions per minute; and opening a blanking switch of the reaction kettle, extruding the glue solution into a glue filling mold through an extruder, naturally cooling and packaging to obtain a finished product.
Example 3
Preparing raw material (weight percentage) SIS, 20%; mineral oil, 25%; 5% of a stabilizer; SBS, 15%; petroleum resin C9, 35%; heating the reaction kettle, when the oil temperature displayed by an oil meter reaches 180 ℃, slowly adding raw materials of mineral oil, a stabilizer and SBS into the reaction kettle in sequence, then covering a reaction kettle cover, locking and introducing nitrogen for protection, controlling the air pressure to be 1.5-2.0kg/cm2, starting a reaction kettle motor for stirring, and keeping the oil temperature of the reaction kettle to be 195 plus 205 ℃; stirring for more than 45 minutes until all the fed raw materials are melted, closing the gas source, opening the reaction kettle cover, feeding the SIS, then covering and locking the reaction kettle cover, and continuously stirring and melting; stirring for more than 30 minutes until the SIS raw materials are melted, opening the cover of the reaction kettle, adding petroleum resin C5, then covering the cover of the reaction kettle, locking, and continuously stirring and melting; continuing to stir for more than 20 minutes to confirm that all the raw materials are molten, and closing the heating system; opening a vacuum machine switch to extract air in the glue solution, controlling the vacuum-pumping time to be 45-60 minutes, and controlling the rotating speed of a motor to be 8-50 revolutions per minute; and opening a blanking switch of the reaction kettle, extruding the glue solution into a glue filling mold through an extruder, naturally cooling and packaging to obtain a finished product.
Example 4
Preparing raw material (weight percentage) SIS, 10%; mineral oil, 25%; 5% of a stabilizer; SBS, 10%; petroleum resin C9, 50%; heating the reaction kettle, when the oil temperature displayed by an oil meter reaches 180 ℃, slowly adding raw materials of mineral oil, a stabilizer and SBS into the reaction kettle in sequence, then covering a reaction kettle cover, locking and introducing nitrogen for protection, controlling the air pressure to be 1.5-2.0kg/cm2, starting a reaction kettle motor for stirring, and keeping the oil temperature of the reaction kettle to be 195 plus 205 ℃; stirring for more than 45 minutes until all the fed raw materials are melted, closing the gas source, opening the reaction kettle cover, feeding the SIS, then covering and locking the reaction kettle cover, and continuously stirring and melting; stirring for more than 30 minutes until the SIS raw materials are melted, opening the cover of the reaction kettle, adding petroleum resin C5, then covering the cover of the reaction kettle, locking, and continuously stirring and melting; continuing to stir for more than 20 minutes to confirm that all the raw materials are molten, and closing the heating system; opening a vacuum machine switch to extract air in the glue solution, controlling the vacuum-pumping time to be 45-60 minutes, and controlling the rotating speed of a motor to be 8-50 revolutions per minute; and opening a blanking switch of the reaction kettle, extruding the glue solution into a glue filling mold through an extruder, naturally cooling and packaging to obtain a finished product.
Example 5
Preparing raw material (weight percentage) SIS, 30%; 10% of mineral oil; 5% of a stabilizer; SBS, 30%; petroleum resin C5, 25%; heating the reaction kettle, when the oil temperature displayed by an oil meter reaches 180 ℃, slowly adding raw materials of mineral oil, a stabilizer and SBS into the reaction kettle in sequence, then covering a reaction kettle cover, locking and introducing nitrogen for protection, controlling the air pressure to be 1.5-2.0kg/cm2, starting a reaction kettle motor for stirring, and keeping the oil temperature of the reaction kettle to be 195 plus 205 ℃; stirring for more than 45 minutes until all the fed raw materials are melted, closing the gas source, opening the reaction kettle cover, feeding the SIS, then covering and locking the reaction kettle cover, and continuously stirring and melting; stirring for more than 30 minutes until the SIS raw materials are melted, opening the cover of the reaction kettle, adding petroleum resin C5, then covering the cover of the reaction kettle, locking, and continuously stirring and melting; continuing to stir for more than 20 minutes to confirm that all the raw materials are molten, and closing the heating system; opening a vacuum machine switch to extract air in the glue solution, controlling the vacuum-pumping time to be 45-60 minutes, and controlling the rotating speed of a motor to be 8-50 revolutions per minute; and opening a blanking switch of the reaction kettle, extruding the glue solution into a glue filling mold through an extruder, naturally cooling and packaging to obtain a finished product.
Product property and parameter table
The invention adopts the steps of three times of feeding, and the reasons are as follows: firstly, raw materials SIS and SBS belong to thermoplastic elastomers, mineral oil is needed for softening, and the raw materials are firstly put into the thermoplastic elastomers; then according to the difference of the melting point of the raw materials, the raw materials are put into the furnace with higher melting point in front and put into the furnace with lower melting point in the later period, so that the feeding time can be saved, and the problem of aging and deterioration caused by too long time of melting the raw materials can be prevented.
The product prepared by the invention is convenient to construct, the release paper can be easily pasted after being peeled off, all materials SBC are thermoplastic elastomers, the ageing resistance and the low-temperature flexibility are much better than those of the traditional asphalt materials, the most important is easy and convenient construction, glue boiling in a heating mode is not needed, and the labor cost is saved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (8)
1. A preparation method of a high-strength, good-toughness and aging-resistant high-molecular hot-melt pressure-sensitive adhesive is characterized by comprising the following steps,
a raw material preparation step, wherein the following raw material SIS is provided, and the content of the raw material SIS is 10-30%; 5-25% of mineral oil; 1-5% of stabilizer; SBS 5-30%; 25-65% of petroleum resin C5 or C9;
stirring, heating the reaction kettle, when the oil temperature displayed by an oil meter reaches 180 ℃, slowly adding the raw materials of mineral oil, the stabilizer and SBS into the reaction kettle in sequence, then covering the reaction kettle, locking and introducing nitrogen for protection, and controlling the air pressure to be 1.5-2.0kg/cm2Starting a reaction kettle motor for stirring, and keeping the oil temperature of the reaction kettle at 195 plus 205 ℃;
a secondary feeding step, namely after all the fed raw materials are melted, closing an air source, opening a reaction kettle cover and feeding SIS, then covering the reaction kettle cover and locking, and continuously stirring and melting;
a third feeding step, after the SIS raw materials are melted, opening a reaction kettle cover, feeding petroleum resin C5 or C9, then covering the reaction kettle cover, locking, and continuously stirring and melting; confirming that all the raw materials are melted, and closing the heating system;
a step of vacuumizing, wherein a switch of a vacuum machine is turned on to extract air in the glue solution, the vacuumizing time is controlled to be 45-60 minutes, and the rotating speed of a motor is controlled to be 8-50 revolutions per minute;
and a cooling forming step, namely opening a discharging switch of the reaction kettle, extruding the glue solution into a glue filling mold through an extruder, naturally cooling and then packaging.
2. The method for preparing hot melt adhesive granules for film-coated products according to claim 1, wherein the SIS is styrene-isoprene-styrene block copolymer, the molecular structure is linear, the styrene content is 10% -25%, the diblock content is 0-20%, and the tensile strength is not less than 10 MPa.
3. The method for preparing hot melt adhesive particles for film-coating products according to claim 1, wherein the mineral oil is naphthenic or paraffinic oil.
4. The method for preparing hot melt adhesive particles for film-coated products according to claim 1, wherein the SBS is styrene-butadiene-styrene block copolymer, the molecular structure is linear, the styrene content is 30-40%, and the tensile strength is more than or equal to 25 MPa.
5. The method for preparing hot melt adhesive granules for coating film products according to claim 1, wherein the stabilizer is phenolic antioxidant 2, 6-di-tert-butyl-p-cresol.
6. The method for preparing hot melt adhesive particles for film-coating products according to claim 1, wherein the stirring step requires 45 minutes or more.
7. The method for preparing hot melt adhesive granules for film-coating products according to claim 1, wherein the secondary feeding step requires stirring for 30 minutes or more.
8. The method for preparing hot melt adhesive granules for film-coating products according to claim 1, wherein the three feeding steps require stirring for 20 minutes or more.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011154961.XA CN114479729A (en) | 2020-10-26 | 2020-10-26 | Preparation method of high-strength, good-toughness and aging-resistant high-molecular hot-melt pressure-sensitive adhesive |
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| CN202011154961.XA CN114479729A (en) | 2020-10-26 | 2020-10-26 | Preparation method of high-strength, good-toughness and aging-resistant high-molecular hot-melt pressure-sensitive adhesive |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333650A (en) * | 2013-06-01 | 2013-10-02 | 黄山市休宁信德成化工有限公司 | Hot-melt and pressure sensitive plaster matrigel |
| CN103351840A (en) * | 2013-07-18 | 2013-10-16 | 晋江长城崛起贸易有限公司 | SBC hot melt adhesive and preparing method thereof |
| CN106047287A (en) * | 2016-05-30 | 2016-10-26 | 广东荣嘉新材料科技有限公司 | Low-temperature hot-melt pressure-sensitive adhesive for disposable hygienic product and preparation method thereof |
| JP2017186487A (en) * | 2016-04-08 | 2017-10-12 | 積水フーラー株式会社 | Hot melt adhesive, tape and label product using the same |
| CN107532053A (en) * | 2015-04-23 | 2018-01-02 | 积水富乐株式会社 | Hot melt adhesive and use its disposable products |
-
2020
- 2020-10-26 CN CN202011154961.XA patent/CN114479729A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333650A (en) * | 2013-06-01 | 2013-10-02 | 黄山市休宁信德成化工有限公司 | Hot-melt and pressure sensitive plaster matrigel |
| CN103351840A (en) * | 2013-07-18 | 2013-10-16 | 晋江长城崛起贸易有限公司 | SBC hot melt adhesive and preparing method thereof |
| CN107532053A (en) * | 2015-04-23 | 2018-01-02 | 积水富乐株式会社 | Hot melt adhesive and use its disposable products |
| JP2017186487A (en) * | 2016-04-08 | 2017-10-12 | 積水フーラー株式会社 | Hot melt adhesive, tape and label product using the same |
| CN106047287A (en) * | 2016-05-30 | 2016-10-26 | 广东荣嘉新材料科技有限公司 | Low-temperature hot-melt pressure-sensitive adhesive for disposable hygienic product and preparation method thereof |
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Application publication date: 20220513 |