CN115160720B - Rheological rubber for high polymer sheet hot-melt pressure-sensitive adhesive and preparation method thereof - Google Patents
Rheological rubber for high polymer sheet hot-melt pressure-sensitive adhesive and preparation method thereof Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229920000642 polymer Polymers 0.000 title claims abstract description 13
- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 12
- 239000012943 hotmelt Substances 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 28
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 22
- 229920003049 isoprene rubber Polymers 0.000 claims abstract description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 50
- 239000011787 zinc oxide Substances 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000004793 Polystyrene Substances 0.000 claims description 10
- 229920001400 block copolymer Polymers 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 229920002223 polystyrene Polymers 0.000 claims description 10
- 238000004513 sizing Methods 0.000 claims description 10
- 230000003712 anti-aging effect Effects 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 235000021355 Stearic acid Nutrition 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000008117 stearic acid Substances 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 6
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 claims description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 5
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 5
- 239000011976 maleic acid Substances 0.000 claims description 5
- 238000010309 melting process Methods 0.000 claims description 5
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 5
- 239000000654 additive Substances 0.000 abstract description 7
- 125000000524 functional group Chemical group 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 7
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000003999 initiator Substances 0.000 description 6
- 229920001195 polyisoprene Polymers 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 238000000518 rheometry Methods 0.000 description 3
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- ZRMMVODKVLXCBB-UHFFFAOYSA-N 1-n-cyclohexyl-4-n-phenylbenzene-1,4-diamine Chemical compound C1CCCCC1NC(C=C1)=CC=C1NC1=CC=CC=C1 ZRMMVODKVLXCBB-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- UXKQNCDDHDBAPD-UHFFFAOYSA-N 4-n,4-n-diphenylbenzene-1,4-diamine Chemical compound C1=CC(N)=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 UXKQNCDDHDBAPD-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F287/00—Macromolecular compounds obtained by polymerising monomers on to block polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
-
- 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
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses rheological rubber for a high polymer sheet hot-melt pressure-sensitive adhesive and a preparation method thereof. The modified SBC thermoplastic rubber is blended with a multi-arm spherical low molecular weight isoprene rubber and other additives. The SBC thermoplastic rubber contains polar functional groups through polar modification, can be adhered to polar base materials, and the multi-arm spherical molecular structure of isoprene rubber not only provides excellent fluidity, but also greatly improves cohesive force through molecular weight adjustment, and solves the contradiction between processability and mechanical properties.
Description
Technical Field
The invention relates to the technical field of C08K13/02 rubber, in particular to rheological rubber for a high polymer sheet hot-melt pressure-sensitive adhesive and a preparation method thereof.
Background
The rheological rubber of the high polymer sheet hot melt pressure-sensitive adhesive generally has the problem that the flowability of the rheological rubber is reduced due to the large molecular weight of the high polymer, the flowability of the flowing rubber is generally changed by adding a flow aid, and the impact strength of the rubber is influenced by the content of the added flow aid.
To solve the problems existing in the prior art, in order to avoid the influence on the rubber properties during the preparation of the flowable rubber, the invention patent publication No. CN110475824A discloses a rubber composite material, in which it is proposed to improve the mechanical properties of the rubber and the stability of the composition by adding mineral powder during the preparation of the rubber, but the kind of powder and the particle size of the particles have a great influence on the compatibility and the change of the mechanical properties during the preparation of the material when the mineral powder is added to the rubber.
Disclosure of Invention
In order to solve the problems of the rheological rubber with low molecular weight, high flowability and no adhesion with polar substrates, the first aspect of the invention provides a rheological rubber for a polymer sheet hot-melt pressure-sensitive adhesive, which is prepared from the following raw materials: modified SBC thermoplastic rubber, isoprene rubber, N' -diphenyl-p-phenylenediamine and other additives;
the average molecular weight of the isoprene rubber is 5000-100000.
As a preferred embodiment, the modified SBC thermoplastic rubber is prepared by grafting SBC thermoplastic rubber with a polar functional group-containing monomer, and an initiator.
It is further preferred that the SBC thermoplastic rubber is selected from one of a polystyrene-polybutadiene-polystyrene block copolymer, a polystyrene-polyisoprene-polystyrene block copolymer.
More preferably, the polar functional group-containing monomer is an unsaturated carboxylic acid.
It is further preferable that the unsaturated carboxylic acid is one or a combination of several selected from the group consisting of maleic acid, acrylic acid, methacrylic acid, itaconic acid, fumaric acid.
Further preferably, the initiator is at least one selected from the group consisting of di-t-butyl peroxide and azobisisobutyronitrile.
As a preferred embodiment, the other additives include 10 to 40 parts by weight of naphthenic oil, 5 to 15 parts by weight of carbon black, 20 to 30 parts by weight of light calcium carbonate, 1 to 5 parts by weight of zinc oxide, 1 to 3 parts by weight of stearic acid, and 0.1 to 2 parts by weight of sulfur.
As a preferred embodiment, the zinc oxide is nano zinc oxide.
As a preferred embodiment, the particle size of the zinc oxide is 10-500nm.
Further preferably, the particle size of the zinc oxide is 10-100nm.
Further preferably, the zinc oxide is spherical nano zinc oxide.
More preferably, the particle size of the spherical nano zinc oxide is 20-30nm.
Spherical nano zinc oxide, model Z713, available from guangzhou macro material technologies limited.
In the experimental process, the applicant finds that the mechanical property of the prepared rubber can be improved by adding nano zinc oxide into a system, and the selected zinc oxide has the particle size of 20-30nm, so that the good compatibility can be ensured, the attaching property between rubber molecular chains can be enhanced, an interconnected network structure is formed between the molecular chains, the local stress concentration can be avoided when the external force is applied, and the shock resistance is improved.
The invention provides a preparation method of rheological rubber for a polymer sheet hot-melt pressure-sensitive adhesive, which comprises the following steps:
1) Adding unsaturated carboxylic acid into the SBC thermoplastic rubber, mixing for 1-10 minutes in a molten state, then adding an initiator, continuously mixing for 1-10 minutes in the molten state, and performing the whole melting process under the protection of nitrogen to obtain modified SBC thermoplastic rubber;
2) Placing the modified SBC thermoplastic rubber and isoprene rubber obtained in the step 1) into an open mill according to parts by weight for open mill, wherein the roll gap of the open mill is 0.8-1 mm, and the mixture is thinned and passed for 5-30 times, cooled for 1-2 hours and thinned and passed for 10-20 times to obtain a mixed sizing material;
3) Feeding the mixed sizing material obtained in the step 2) and other additives into an internal mixer for banburying, wherein the temperature of the internal mixer is 80-150 ℃ and the banburying is carried out for 3-20 minutes;
4) Tabletting the material obtained after banburying, and cooling in a cooling tank for 10-16 hours;
5) And (3) putting the cooled material into a vulcanizing machine for vulcanization, wherein the vulcanizing temperature is 100-155 ℃, the time is 360-400 seconds, the machine pressure is 14-16 MPa, and the vulcanizing is finished to obtain the material.
Compared with the prior art, the invention has the following beneficial effects:
(1) The SBC thermoplastic rubber is subjected to polarity modification, so that the compatibility of the SBC thermoplastic rubber and polar substances is improved;
(2) The modified SBC rubber is blended with isoprene rubber, the multi-arm spherical molecular structure of the isoprene rubber provides excellent fluidity, and the cohesion is greatly improved through the adjustment of medium and low molecular weight, so that the contradiction between the processability and the mechanical property is solved.
Detailed Description
Example 1
Example 1 provides a rheology rubber for a polymer sheet hot melt pressure sensitive adhesive. The preparation method comprises the following raw materials in parts by weight: 120 parts of polystyrene-polyisoprene-polystyrene block copolymer, 6 parts of maleic acid, 2 parts of azodiisobutyronitrile, 45 parts of polyisoprene, 25 parts of naphthenic oil, 8 parts of carbon black, 25 parts of light calcium carbonate, 4 parts of zinc oxide, 1.4 parts of stearic acid, 0.8 part of accelerator CZ, 0.2 part of accelerator D, 0.25 part of anti-aging agent 4010, 0.3 part of anti-aging agent RD, 0.2 part of accelerator TT and 1 part of sulfur.
Polystyrene-polyisoprene-polystyrene block copolymer: american shell chemical company;
polyisoprene: allangasite rubber (Nantong) chemical industry Co., ltd;
the particle size of the spherical nano zinc oxide is 20-30nm.
Spherical nano zinc oxide, model Z713, available from guangzhou macro material technologies limited.
The preparation method of the rheological rubber comprises the following steps:
1) Adding unsaturated carboxylic acid into SBC thermoplastic rubber, mixing for 1-10 minutes in a molten state, then adding an initiator, continuously mixing for 8 minutes in the molten state, and performing the whole melting process under the protection of nitrogen to obtain modified SBC thermoplastic rubber;
2) Placing the modified SBC thermoplastic rubber and isoprene rubber obtained in the step 1) into an open mill according to parts by weight for open mill, wherein the roll gap of the open mill is 1mm, the thin pass is carried out 12 times, the cooling is carried out for 1.5 hours, and the thin pass is carried out 15 times, so as to obtain a mixed sizing material;
3) Feeding the mixed sizing material obtained in the step 2) and other additives into an internal mixer for banburying at 120 ℃ for 10 minutes;
4) Tabletting the material obtained after banburying, and cooling in a cooling tank for 12 hours;
5) And (3) putting the cooled material into a vulcanizing machine for vulcanization, wherein the vulcanizing temperature is 140 ℃, the vulcanizing time is 380 seconds, the machine pressure is 15MPa, and the vulcanizing is finished.
Comparative example 1
Comparative example 1 provides a rheology rubber for a polymer sheet hot melt pressure sensitive adhesive. The preparation method comprises the following raw materials in parts by weight: 120 parts of polystyrene-polyisoprene-polystyrene block copolymer, 6 parts of maleic acid, 2 parts of dicumyl peroxide, 45 parts of polyisoprene, 25 parts of naphthenic oil, 8 parts of carbon black, 25 parts of light calcium carbonate, 4 parts of zinc oxide, 1.4 parts of stearic acid, 0.8 part of accelerator CZ, 0.2 part of accelerator D, 0.25 part of anti-aging agent 4010, 0.3 part of anti-aging agent RD, 0.2 part of accelerator TT and 1 part of sulfur.
Polystyrene-polyisoprene-polystyrene block copolymer: american shell chemical company;
polyisoprene: allangasite rubber (Nantong) chemical industry Co., ltd;
the particle size of the spherical nano zinc oxide is 20-30nm.
Spherical nano zinc oxide, model Z713, available from guangzhou macro material technologies limited.
The preparation method of the rheological rubber comprises the following steps:
1) Adding unsaturated carboxylic acid into SBC thermoplastic rubber, mixing for 1-10 minutes in a molten state, then adding an initiator, continuously mixing for 8 minutes in the molten state, and performing the whole melting process under the protection of nitrogen to obtain modified SBC thermoplastic rubber;
2) Placing the modified SBC thermoplastic rubber and isoprene rubber obtained in the step 1) into an open mill according to parts by weight for open mill, wherein the roll gap of the open mill is 1mm, the thin pass is carried out 12 times, the cooling is carried out for 1.5 hours, and the thin pass is carried out 15 times, so as to obtain a mixed sizing material;
3) Feeding the mixed sizing material obtained in the step 2) and other additives into an internal mixer for banburying at 120 ℃ for 10 minutes;
4) Tabletting the material obtained after banburying, and cooling in a cooling tank for 12 hours;
5) And (3) putting the cooled material into a vulcanizing machine for vulcanization, wherein the vulcanizing temperature is 140 ℃, the vulcanizing time is 380 seconds, the machine pressure is 15MPa, and the vulcanizing is finished.
Comparative example 2
Comparative example 2 provides a rheology rubber for a polymer sheet hot melt pressure sensitive adhesive. The preparation method comprises the following raw materials in parts by weight: 120 parts of polystyrene-polyisoprene-polystyrene block copolymer, 5 parts of polyisoprene, 25 parts of naphthenic oil, 8 parts of carbon black, 25 parts of light calcium carbonate, 4 parts of zinc oxide, 1.4 parts of stearic acid, 0.8 part of accelerator CZ, 0.2 part of accelerator D, 0.25 part of antioxidant 4010, 0.3 part of antioxidant RD, 0.2 part of accelerator TT and 1 part of sulfur.
Polystyrene-polyisoprene-polystyrene block copolymer: american shell chemical company;
polyisoprene: allangasite rubber (Nantong) chemical industry Co., ltd;
the particle size of the spherical nano zinc oxide is 20-30nm.
Spherical nano zinc oxide, model Z713, available from guangzhou macro material technologies limited.
The preparation method of the rheological rubber comprises the following steps:
1) Adding unsaturated carboxylic acid into SBC thermoplastic rubber, mixing for 1-10 minutes in a molten state, then adding an initiator, continuously mixing for 8 minutes in the molten state, and performing the whole melting process under the protection of nitrogen to obtain modified SBC thermoplastic rubber;
2) Placing the modified SBC thermoplastic rubber and isoprene rubber obtained in the step 1) into an open mill according to parts by weight for open mill, wherein the roll gap of the open mill is 1mm, the thin pass is carried out 12 times, the cooling is carried out for 1.5 hours, and the thin pass is carried out 15 times, so as to obtain a mixed sizing material;
3) Feeding the mixed sizing material obtained in the step 2) and other additives into an internal mixer for banburying at 120 ℃ for 10 minutes;
4) Tabletting the material obtained after banburying, and cooling in a cooling tank for 12 hours;
5) And (3) putting the cooled material into a vulcanizing machine for vulcanization, wherein the vulcanizing temperature is 140 ℃, the vulcanizing time is 380 seconds, the machine pressure is 15MPa, and the vulcanizing is finished.
Comparative example 3
The rheological rubber for the polymer sheet hot-melt pressure-sensitive adhesive is similar to example 1 in specific implementation mode, and is different from example 1 in that zinc oxide is rod-shaped nano zinc oxide, the diameter is 17nm, the length is 130nm, and the model Z715 is purchased from Guangzhou Hongwu materials science and technology Co. .
Performance testing
The examples and comparative examples were subjected to performance tests according to the following methods. The results are shown in Table 1.
(1) Melt flow rate ((g/10 min,150 ℃ C.)/g): melt flow rate was measured according to astm d-1238.
(2) Izod impact Strength (Izod impact Strength) (KJ/m) 2 ): the Izod impact strength was measured according to ASTM D256 with a 1/8' thick sample.
TABLE 1
Claims (1)
1. The rheological rubber for the high polymer sheet hot-melt pressure-sensitive adhesive is characterized by being prepared from the following raw materials in parts by weight:
120 parts of polystyrene-polyisoprene-polystyrene block copolymer, 6 parts of maleic acid, 2 parts of azodiisobutyronitrile, 45 parts of isoprene rubber, 25 parts of naphthenic oil, 8 parts of carbon black, 25 parts of light calcium carbonate, 4 parts of spherical nano zinc oxide, 1.4 parts of stearic acid, 0.8 part of accelerator CZ, 0.2 part of accelerator D, 0.25 part of anti-aging agent 4010, 0.3 part of anti-aging agent RD, 0.2 part of accelerator TT and 1 part of sulfur;
the particle size of the spherical nano zinc oxide is 20-30nm;
the average molecular weight of the isoprene rubber is 5000-100000;
the preparation method of the rheological rubber comprises the following steps:
1) Adding maleic acid into the styrene-polyisoprene-polystyrene block copolymer, mixing for 1-10 minutes in a molten state, then adding azodiisobutyronitrile, continuously mixing for 8 minutes in the molten state, and performing the whole melting process under the protection of nitrogen to obtain modified SBC thermoplastic rubber;
2) Placing the modified SBC thermoplastic rubber and isoprene rubber obtained in the step 1) into an open mill according to parts by weight for open mill, wherein the roll gap of the open mill is 1mm, the thin pass is carried out 12 times, the cooling is carried out for 1.5 hours, and the thin pass is carried out 15 times, so as to obtain a mixed sizing material;
3) Mixing the mixed sizing material obtained in the step 2) with naphthenic oil, carbon black, light calcium carbonate, spherical nano zinc oxide, stearic acid, an accelerator CZ, an accelerator D, an anti-aging agent 4010, an anti-aging agent RD, an accelerator TT and sulfur, and banburying in an internal mixer at 120 ℃ for 10 minutes;
4) Tabletting the material obtained after banburying, and cooling in a cooling tank for 12 hours;
5) And (3) putting the cooled material into a vulcanizing machine for vulcanization, wherein the vulcanizing temperature is 140 ℃, the vulcanizing time is 380 seconds, the machine pressure is 15MPa, and the vulcanizing is finished.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5692978A (en) * | 1979-12-26 | 1981-07-28 | Asahi Chem Ind Co Ltd | Hot-melt adhesive composition |
| WO1998050465A1 (en) * | 1997-05-02 | 1998-11-12 | Dsm N.V. | Thermoplastic elastomer composition adapted for adhesion to polar materials |
| CN103980557A (en) * | 2014-05-29 | 2014-08-13 | 南京东亚橡塑制品有限公司 | High-fluidity rubber material and preparation method thereof |
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