CN115477793A - High-hydrophilicity rubber roller composition and application thereof - Google Patents
High-hydrophilicity rubber roller composition and application thereof Download PDFInfo
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- CN115477793A CN115477793A CN202111409474.8A CN202111409474A CN115477793A CN 115477793 A CN115477793 A CN 115477793A CN 202111409474 A CN202111409474 A CN 202111409474A CN 115477793 A CN115477793 A CN 115477793A
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- Prior art keywords
- rubber
- hydrophilic
- parts
- hydrophilicity
- hydrophilic modifier
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 100
- 239000005060 rubber Substances 0.000 title claims abstract description 82
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 239000003607 modifier Substances 0.000 claims abstract description 45
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 24
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 19
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 17
- 229930195729 fatty acid Natural products 0.000 claims abstract description 17
- 239000000194 fatty acid Substances 0.000 claims abstract description 17
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 22
- 239000000806 elastomer Substances 0.000 claims description 18
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 20
- 150000004665 fatty acids Chemical class 0.000 abstract description 16
- 238000002156 mixing Methods 0.000 abstract description 14
- 238000012546 transfer Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 12
- 239000000178 monomer Substances 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 239000005639 Lauric acid Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- XUJLWPFSUCHPQL-UHFFFAOYSA-N 11-methyldodecan-1-ol Chemical compound CC(C)CCCCCCCCCCO XUJLWPFSUCHPQL-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000004073 vulcanization Methods 0.000 description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229920005549 butyl rubber Polymers 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- -1 ethylene, propylene Chemical group 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N pentadecanoic acid Chemical compound CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 2
- 229940083957 1,2-butanediol Drugs 0.000 description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- BMRWNKZVCUKKSR-UHFFFAOYSA-N butane-1,2-diol Chemical compound CCC(O)CO BMRWNKZVCUKKSR-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000002763 monocarboxylic acids Chemical class 0.000 description 2
- 229940043348 myristyl alcohol Drugs 0.000 description 2
- ZWRUINPWMLAQRD-UHFFFAOYSA-N nonan-1-ol Chemical compound CCCCCCCCCO ZWRUINPWMLAQRD-UHFFFAOYSA-N 0.000 description 2
- REIUXOLGHVXAEO-UHFFFAOYSA-N pentadecan-1-ol Chemical compound CCCCCCCCCCCCCCCO REIUXOLGHVXAEO-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000010215 titanium dioxide Nutrition 0.000 description 2
- 229940087291 tridecyl alcohol Drugs 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- TXLINXBIWJYFNR-UHFFFAOYSA-N 4-phenylpyridine-2-carbonitrile Chemical compound C1=NC(C#N)=CC(C=2C=CC=CC=2)=C1 TXLINXBIWJYFNR-UHFFFAOYSA-N 0.000 description 1
- PLLBRTOLHQQAQQ-UHFFFAOYSA-N 8-methylnonan-1-ol Chemical compound CC(C)CCCCCCCO PLLBRTOLHQQAQQ-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- IBOFPAYRQXRWIR-UHFFFAOYSA-N C(=S)=CNC Chemical compound C(=S)=CNC IBOFPAYRQXRWIR-UHFFFAOYSA-N 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SPPRCJUFTATEQB-UHFFFAOYSA-N bis[2-(2-butoxyethoxy)ethyl] oxalate Chemical compound CCCCOCCOCCOC(=O)C(=O)OCCOCCOCCCC SPPRCJUFTATEQB-UHFFFAOYSA-N 0.000 description 1
- 229960000541 cetyl alcohol Drugs 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- XTUSEBKMEQERQV-UHFFFAOYSA-N propan-2-ol;hydrate Chemical compound O.CC(C)O XTUSEBKMEQERQV-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 150000003628 tricarboxylic acids Chemical class 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of printing industry, relates to the technical field of IPC (industrial personal computer) of C08L9/02, and particularly relates to a high-hydrophilicity rubber roller composition and application thereof. Based on 100 parts of rubber component, the rubber component comprises 100 parts of rubber component and 1.5-10 parts of hydrophilic modifier; the rubber component comprises at least one of nitrile rubber and ethylene propylene diene monomer; the hydrophilic modifier is a compound with a molecular structure containing hydrophilic groups. The high-hydrophilicity rubber roller composition is obtained by adding a fatty acid or fatty alcohol hydrophilic modifier into a rubber component and blending and modifying. When the composition is added into a rubber roll material, the hydrophilic modifier is promoted to migrate to the surface of the material by utilizing the compatibility, cohesive energy density and other differences between the hydrophilic modifier and other components in a system to form a hydrophilic film layer, so that the hydrophilicity of the rubber roll material is obviously improved, and the transfer capacity of ink in the printing process is improved. In addition, the long-term hydrophilicity of the hydrophilic modifier is remarkably improved by adjusting the molecular structure and the like of the hydrophilic modifier.
Description
Technical Field
The invention relates to the technical field of printing industry, relates to the technical field of IPC (industrial personal computer) of C08L9/02, and particularly relates to a high-hydrophilicity rubber roller composition and application thereof.
Background
The printing industry needs to use a plurality of sets of rubber rollers to transfer the printing ink to the printing surface, and because the printing ink can use 15-20% of ethanol or isopropanol water solution, namely alcohol fountain solution, to adjust the ink volume solubility, the rubber rollers needing to transfer the printing ink have the characteristics of good hardness, wear resistance, strength and the like, and also need to have good alcohol medium resistance, namely low swelling, low extraction, good hydrophilicity and the like. Chinese patent CN200410096717 discloses a special elastomer composite material for printing rubber rollers, wherein carboxyl-terminated liquid nitrile rubber, nitrile rubber and other components are adopted to make the nitrile rubber generate a certain degree of micro-crosslinking under the action of a peroxide dynamic crosslinking agent, and lignin and other components in a system are utilized to perform in-situ-modification dispersion, so as to obtain a composite material with low hardness, high strength, high wear resistance, good oil resistance, good ink resistance and other characteristics. However, as in the above patent, the rubber used in the conventional rubber roller is generally nitrile rubber and ethylene propylene diene rubber, which are typical hydrophobic materials, and there are still some disadvantages in the ink transfer, so it is very significant to improve the hydrophilicity of the rubber roller.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-hydrophilicity rubber roll composition, which comprises 100 parts of rubber component and 1.5-10 parts of hydrophilic modifier, wherein the rubber component is 100 parts; the rubber component comprises at least one of nitrile rubber and ethylene propylene diene monomer; the hydrophilic modifier is a compound with a molecular structure containing hydrophilic groups.
The high-hydrophilicity rubber roll composition is prepared by mixing a hydrophilic modifier and a rubber component, wherein the blending mode is not specially limited, and the high-hydrophilicity rubber roll composition can be added in an internal mixing mode and an open mixing mode. The specific type of the rubber component in the invention is not particularly limited, and various rubber materials known to those skilled in the art can be selected, including but not limited to nitrile rubber, natural rubber, halogenated rubber, ethylene propylene diene monomer, styrene butadiene rubber, etc.; preferably, the rubber component of the present invention comprises at least one of nitrile rubber and ethylene propylene diene rubber.
The nitrile rubber is a copolymer formed by polymerizing acrylonitrile and butadiene monomers, wherein the molecular structure and the physical and chemical properties of the nitrile rubber can be regulated and controlled by adjusting the ratio of the acrylonitrile to the butadiene monomers. The specific choice of the nitrile rubber in the present invention is not particularly limited, and various nitrile rubber products known to those skilled in the art can be selected. The ethylene propylene diene monomer is a copolymer obtained by copolymerizing ethylene, propylene and a small amount of non-conjugated diene monomer. Various types of ethylene propylene diene monomer known to those skilled in the art may be selected for use in the present invention.
In the high-hydrophilicity rubber roll composition, the hydrophilic modifier is a component with certain hydrophilicity, and the molecular structure of the hydrophilic modifier contains hydrophilic groups. In the present invention, the specific type and selection of the hydrophilic group are not particularly limited, and may be a hydroxyl group, a carboxyl group, an amino group, an amide group, a thiol group, a urethane group, or the like, which is well known to those skilled in the art. The hydrophilic modifier may be a small molecule compound containing the hydrophilic group, or may be a polymer having a certain degree of polymerization. Preferably, the hydrophilic modifier described herein is a small molecule monomer having the above-mentioned hydrophilic group in its molecular structure.
The content of the hydrophilic modifier in the high-hydrophilicity rubber roll composition is 1.5-10 parts by taking 100 parts of the rubber component as a preferable technical scheme, and the content of the hydrophilic modifier is 4-8 parts by taking 100 parts of the rubber component as a preferable technical scheme. Illustratively, the content of the hydrophilic modifier may be 1.5 parts, 1.8 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.2 parts, 5.5 parts, 5.8 parts, 6 parts, 6.3 parts, 6.5 parts, 6.7 parts, 6.9 parts, 7 parts, 7.2 parts, 7.5 parts, 7.8 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts, 10 parts, or the like.
In a preferred embodiment of the present invention, the hydrophilic modifier is a fatty acid and/or a fatty alcohol having 4 to 22 carbon atoms. The fatty acid in the invention is aliphatic carboxylic acid, and may be monocarboxylic acid, or may be polycarboxylic acid (for example, dicarboxylic acid, tricarboxylic acid, etc.); the aliphatic alcohol is also an aliphatic alcohol, which may be a monohydric alcohol or a polyhydric alcohol (e.g., a dihydric alcohol or a trihydric alcohol). Preferably, the fatty acid in the present invention is a monocarboxylic acid, and the fatty alcohol is a monoalcohol.
The fatty acid and the fatty alcohol are micromolecular monomers, the number of carbon atoms of the micromolecular monomers is in the range of C4-C22, and the micromolecular monomers comprise saturated fatty acid/fatty alcohol such as lauric acid, capric acid, lauryl alcohol, myristyl alcohol and the like, and unsaturated fatty acid/fatty alcohol such as oleic acid and the like.
As a preferable technical solution of the present invention, the hydrophilic modifier of the present invention is a chain fatty acid/fatty alcohol compound; further preferably, the number of carbon atoms of the hydrophilic modifier is not less than 9; more preferably, the hydrophilic modifier has C9 to C16 carbon atoms. As an example, the fatty acid/fatty alcohol may be nonanol, decanol, isodecanol, lauryl alcohol, isotridecyl alcohol, myristyl alcohol, pentadecanol, cetyl alcohol, lauric acid, myristic acid, n-pentadecanoic acid, palmitic acid, and the like.
As a preferred technical scheme of the invention, the molecular structure of the fatty alcohol contains a branched chain structure; preferably, the fatty alcohol is the isomeric tridecyl alcohol (CAS: 27458-92-0).
In a second aspect of the invention, there is provided a rubber elastomer composite comprising a highly hydrophilic rubber roll composition as described above.
As a preferable technical scheme of the invention, the composite material comprises the following components in parts by weight:
as a preferable technical scheme of the invention, the content of CAN in the nitrile rubber is 22-48 wt%. The CAN content in the nitrile rubber in the present invention refers to the Content of Acrylonitrile (CAN) monomer in the butyl rubber, wherein the above CAN content is determined according to the methods well known to those skilled in the art. The source of the nitrile rubber satisfying the above conditions is not particularly limited in the present invention, and the nitrile rubber raw materials of the south emperor nitrile rubber 1082, 1204D and other brands can be adopted.
The plasticizer used in the present invention is not particularly limited, and various plasticizers known to those skilled in the art can be used, including but not limited to bis (butoxyethoxyethyl) oxalate (TP 95). The specific choice of the vulcanization accelerator in the present invention is not particularly limited, and various vulcanization accelerators known to those skilled in the art can be selected, including but not limited to bis (thiocarbonyldimethylamine (TMTD), tetraethylthiuram disulfide (TETD), 2-mercaptobenzothiazole (M), 4' -dithiodimorpholine (DTDM), etc. the vulcanization agent in the present invention can be a vulcanization agent conventional in the art, including but not limited to sulfur, the specific kinds of the other additives in the present invention are not particularly limited, and additives conventional in the art can be selected, including but not limited to pigments such as phthalocyanine blue, titanium dioxide, protective wax, etc. the specific choice of the silane coupling agent in the present invention is not particularly limited, and additives including but not limited to a151 (vinyltriethoxysilane), a171 (vinyltrimethoxysilane), a172 (vinyltris (β -methoxyethoxy) silane), etc. can be selected.
Further, the composite material comprises the following components in parts by weight:
in the process of completing the invention, the applicant finds that the hydrophilic performance of the rubber roller can be obviously improved and the contact angle of the rubber roller can be reduced by adding a proper amount of the fatty acid or the fatty alcohol into the rubber elastomer for preparing the rubber roller, so that the transfer effect of the printing ink to the printing surface is better. The applicant finds that none of the fatty acids or fatty alcohols can achieve the above hydrophilic modification, and particularly, if the hydrophilicity of the rubber roller is kept excellent during long-term use, further optimization and adjustment of the fatty acid or fatty alcohol is required. The applicants have found that the carbon chain length of the fatty acid or fatty alcohol used directly affects the hydrophilicity-improving effect thereof. When too short a carbon chain length of the fatty acid or fatty alcohol is used, the hydrophilicity of the resulting elastomeric material is not significantly improved, and in particular, the hydrophilicity is almost completely eliminated when it is tested after being left for a period of time. When the used fatty acid or fatty alcohol carbon chain is too long, the hydrophilicity of the obtained elastomer material is also not obviously improved. The applicant speculates that when the carbon chain length of the fatty acid or fatty alcohol is short, the difference between the cohesive strength of the polymer material and the polymer material such as butyl rubber is large, and the polymer material is easy to volatilize and not easy to exert good modification effect. Moreover, because the molecular chain segment is small, the migration can easily occur, so that the elastomer overflows to cause the loss of the hydrophilicity of the material. When the length of the carbon chain of the hydrophilic modifier is too long, the hydrophilic modifier is not easy to migrate out of the surface of the rubber, and the effect of improving the hydrophilicity is weakened. When the length of the carbon chain of the hydrophilic modifier is reasonable and is in the range of C9-C16, especially in the range of C11-C13, the carboxyl or hydroxyl in the hydrophilic modifier migrates to the surface of the material due to the polarity difference with the rubber component in the system to form a hydrophilic film layer, thereby being helpful for improving the hydrophilicity of the material. Meanwhile, the longer hydrophobic chain alkyl chain in the structure can be randomly inserted among molecular chains of other polymeric materials such as butyl rubber and the like in the material dispersion process to form a physical entanglement network, so that the hydrophilic modifier molecules are effectively prevented from being separated from the elastomer material, and the long-term excellent hydrophilicity is maintained.
A second aspect of the invention provides the use of a rubber elastomer composite as described above in the field of ink printing rollers.
The technical scheme provided by the invention has the following beneficial effects：
The high-hydrophilicity rubber roller composition is obtained by adding a fatty acid or fatty alcohol hydrophilic modifier into a rubber component and blending and modifying. When the composition is added into a rubber roll material, the hydrophilic modifier in the composition is promoted to migrate to the surface of the material by utilizing the difference of compatibility, cohesive energy density and the like between the hydrophilic modifier and other components in a system, such as other rubber materials, and the like, so as to form a hydrophilic film layer, thereby obviously improving the hydrophilicity of the rubber roll material and improving the transfer capacity of ink in the printing ink process. In addition, the long-term hydrophilicity of the hydrophilic modifier is obviously improved by adjusting the molecular structure and the segment length of the hydrophilic modifier.
Detailed Description
The rubber elastomer composites in the following examples and comparative examples were prepared as follows: putting the nitrile rubber into an internal mixer, carrying out internal mixing for 60s, adding zinc oxide, stearic acid, protective wax, phthalocyanine blue and a hydrophilic modifier, carrying out internal mixing for 60s, adding half of white carbon black, titanium white, argil, factice, a silane coupling agent and half of a plasticizer, carrying out internal mixing for 60s, adding the rest white carbon black and the plasticizer, carrying out internal mixing to 125 ℃ for rubber discharge, adding a vulcanizing agent and a vulcanization accelerator on an open mill, carrying out sheet discharging, and vulcanizing at 185 ℃ for 8min to obtain the nitrile rubber.
Example 1
The embodiment 1 provides a highly hydrophilic rubber roll composition, which is prepared by blending and modifying 150 parts by weight of nitrile rubber 1082 and 10 parts by weight of lauric acid, wherein the hydrophilic modifier is lauric acid.
The embodiment also provides a rubber elastomer composite material containing the high-hydrophilicity rubber roll composition, and the composite material comprises the following components in parts by weight:
example 2
The embodiment provides a highly hydrophilic rubber roll composition, which is prepared by blending and modifying 150 parts by weight of nitrile rubber 1082 and 10 parts by weight of iso-tridecyl alcohol, wherein the hydrophilic modifier is iso-tridecyl alcohol.
The embodiment also provides a rubber elastomer composite material containing the high-hydrophilicity rubber roller composition, and the composite material comprises the following components in parts by weight:
example 3
The embodiment provides a high-hydrophilicity rubber roll composition, which is prepared by blending and modifying 280 parts by weight of nitrile rubber 1024D and 10 parts by weight of lauric acid, wherein the hydrophilic modifier is lauric acid.
The embodiment also provides a rubber elastomer composite material containing the high-hydrophilicity rubber roller composition, and the composite material comprises the following components in parts by weight:
example 4
The embodiment provides a high-hydrophilicity rubber roll composition, which is prepared by blending and modifying 280 parts by weight of nitrile rubber 1024D and 10 parts by weight of hydrophilic modifier, wherein the hydrophilic modifier is iso-tridecyl alcohol.
The embodiment also provides a rubber elastomer composite material containing the high-hydrophilicity rubber roller composition, and the composite material comprises the following components in parts by weight:
comparative example 1
The present case provides a rubber elastomer composite material, which comprises the following components in parts by weight:
the applicant carried out contact angle tests on the rubber elastomer composites in the above examples and comparative examples. Specifically, the rubber elastomer composite described above was vulcanized to give an 80 × 50 × 20mm sheet-like sample, and the wettability contact angle of water to the surface of the sample material was measured using a contact angle tester, and the results are shown in table 1 below.
TABLE 1
| Item of clause | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 |
| Contact angle | 87.04° | 70.04° | 81.69° | 86.14° | 99.64° |
The contact angle is an indication of the wetting behavior of the surface of a material with a liquid in contact. Contact angles < 90 ° indicate wetting, and contact angles > 90 ° indicate no wetting. According to the contact test, the contact angle of the rubber compound and water is changed from more than 90 degrees to less than 90 degrees after the rubber roll improver is added, which indicates that the rubber roll is changed from hydrophobic to hydrophilic.
In addition, the applicant found that the hydrophilicity of the sample of the material of example 2 was 69.28 ° which was substantially identical to that of the original sample, and the contact angle of the sample of 1, 2-butanediol was 87.11 ° which was significantly increased after the sample of the material of example 2 was left alone in a normal temperature and humidity environment for 4 weeks after the hydrophilic modifier isometrically tridecyl alcohol was replaced with the same amount of 1, 2-butanediol as the hydrophilic modifier in example 2, and it was seen that the improvement in the hydrophilicity of the resulting material was also affected by the selection of the fatty acid or the fatty alcohol.
Claims (9)
1. The high-hydrophilicity rubber roll composition is characterized by comprising 100 parts of rubber component and 1.5-10 parts of hydrophilic modifier by 100 parts of rubber component; the rubber component comprises at least one of nitrile rubber and ethylene propylene diene monomer; the hydrophilic modifier is a compound with a molecular structure containing hydrophilic groups.
2. The highly hydrophilic rubber roll composition according to claim 1, wherein the content of the hydrophilic modifier is 4 to 8 parts based on 100 parts of the rubber component.
3. The highly hydrophilic rubber roll composition according to claim 1, wherein the hydrophilic modifier is a C4-C22 fatty acid and/or fatty alcohol.
4. The highly hydrophilic rubber roll composition as recited in claim 3, wherein the number of carbon atoms of the hydrophilic modifier is not less than 9.
5. The highly hydrophilic rubber roll composition according to claim 3, wherein the number of carbon atoms of the hydrophilic modifier is C9-C16.
6. The highly hydrophilic rubber covered roller composition as recited in claim 3, wherein the fatty alcohol has a branched structure in its molecular structure.
7. A rubber elastomer composite characterized in that it comprises the highly hydrophilic rubber roll composition as claimed in any one of claims 1 to 6.
8. The rubber elastomer composite of claim 7, wherein the composite comprises the following components in parts by weight:
9. use of a rubber elastomer composite according to any one of claims 7 to 8 in the field of ink printing rollers.
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Citations (3)
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|---|---|---|---|---|
| CN1781980A (en) * | 2004-12-02 | 2006-06-07 | 北京化工大学 | High performance elastomer composite material spcially for printing rubber roller and its preparing method |
| CN103160031A (en) * | 2011-12-15 | 2013-06-19 | 沈阳防锈包装材料有限责任公司 | Rustproof rubber and manufacturing method thereof |
| CN110903558A (en) * | 2019-10-15 | 2020-03-24 | 青岛科技大学 | Water-absorbing rubber composite material and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781980A (en) * | 2004-12-02 | 2006-06-07 | 北京化工大学 | High performance elastomer composite material spcially for printing rubber roller and its preparing method |
| CN103160031A (en) * | 2011-12-15 | 2013-06-19 | 沈阳防锈包装材料有限责任公司 | Rustproof rubber and manufacturing method thereof |
| CN110903558A (en) * | 2019-10-15 | 2020-03-24 | 青岛科技大学 | Water-absorbing rubber composite material and preparation method thereof |
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| 张洋编: "聚合物制备工程", vol. 1, 31 January 2001, 中国轻工业出版社, pages: 30 * |
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