CN111303480B - Vulcanization-promoted comprehensive protective material and preparation method thereof - Google Patents
Vulcanization-promoted comprehensive protective material and preparation method thereof Download PDFInfo
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- CN111303480B CN111303480B CN202010336203.3A CN202010336203A CN111303480B CN 111303480 B CN111303480 B CN 111303480B CN 202010336203 A CN202010336203 A CN 202010336203A CN 111303480 B CN111303480 B CN 111303480B
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- 239000000463 material Substances 0.000 title claims abstract description 25
- 230000001681 protective effect Effects 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 34
- UYISKGVFPMWFJV-UHFFFAOYSA-N terephthalic acid;zinc Chemical compound [Zn].OC(=O)C1=CC=C(C(O)=O)C=C1 UYISKGVFPMWFJV-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 19
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000000839 emulsion Substances 0.000 claims abstract description 10
- 238000004073 vulcanization Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 17
- 239000003963 antioxidant agent Substances 0.000 claims description 16
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- ZZMVLMVFYMGSMY-UHFFFAOYSA-N 4-n-(4-methylpentan-2-yl)-1-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 ZZMVLMVFYMGSMY-UHFFFAOYSA-N 0.000 claims description 13
- ZJNLYGOUHDJHMG-UHFFFAOYSA-N 1-n,4-n-bis(5-methylhexan-2-yl)benzene-1,4-diamine Chemical compound CC(C)CCC(C)NC1=CC=C(NC(C)CCC(C)C)C=C1 ZJNLYGOUHDJHMG-UHFFFAOYSA-N 0.000 claims description 12
- 238000004821 distillation Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- IVKNZCBNXPYYKL-UHFFFAOYSA-N 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[4-(2,4,4-trimethylpentan-2-yl)phenoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO)C=C1 IVKNZCBNXPYYKL-UHFFFAOYSA-N 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 3
- 229940045870 sodium palmitate Drugs 0.000 claims description 3
- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 12
- 230000003068 static effect Effects 0.000 abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 238000013040 rubber vulcanization Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 239000002574 poison Substances 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 17
- 230000032683 aging Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 14
- 239000000047 product Substances 0.000 description 14
- 238000009472 formulation Methods 0.000 description 12
- 238000012360 testing method Methods 0.000 description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- MHKLKWCYGIBEQF-UHFFFAOYSA-N 4-(1,3-benzothiazol-2-ylsulfanyl)morpholine Chemical compound C1COCCN1SC1=NC2=CC=CC=C2S1 MHKLKWCYGIBEQF-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000010692 aromatic oil Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000539 dimer Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000013638 trimer Substances 0.000 description 2
- 239000004636 vulcanized rubber Substances 0.000 description 2
- -1 1, 4-dimethylpentyl Chemical group 0.000 description 1
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 206010027439 Metal poisoning Diseases 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229940083575 sodium dodecyl sulfate Drugs 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 239000012936 vulcanization activator Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- WWILPJGMZMMNKI-UHFFFAOYSA-L zinc;terephthalate Chemical group [Zn+2].[O-]C(=O)C1=CC=C(C([O-])=O)C=C1 WWILPJGMZMMNKI-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- 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
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3437—Six-membered rings condensed with carbocyclic rings
-
- 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
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a vulcanization-accelerated comprehensive protective material and a preparation method thereof. The protective material consists of an anti-aging agent RD, an anti-aging agent 4020, an anti-aging agent 4030 and zinc terephthalate, and the proportion is (by weight) 25-30: 20-25: 20-35. The preparation method of the protective material comprises the following steps: (1) adding the anti-aging agents RD, 4020 and 4030 and an emulsifier into acetone, and stirring to obtain an emulsion system A; (2) dispersing zinc terephthalate and an emulsifier in acetone to obtain an emulsion system B; (3) and mixing the system A and the system B in a homogenizer, distilling to recover acetone, cooling the residual substance, and granulating to obtain the target product. The protective material has excellent protective effects of thermal oxygen resistance, dynamic and static ozone resistance, metal poison resistance and the like, and can promote the rubber vulcanization process.
Description
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a vulcanization-promoted type comprehensive protection material for rubber and a preparation method thereof.
Background
During the processing, storage and use of the rubber and the products thereof, the aging symptoms such as cracking, stickiness, hardening, softening, powdering, discoloration, mold growth and the like can occur due to the combined action of internal and external factors, and finally the use value is lost. The rubber anti-aging agent is a product capable of preventing or delaying rubber aging. Different anti-aging materials have different protection emphasis points, and engineers generally match and use the materials according to the characteristics of each material to achieve the best effect.
Rubber antioxidant RD [2,2, 4-trimethyl-1, 2-dihydroquinoline polymer (C)12H15N)n，n＝2～4]Is the most widely usedThe quinoline anti-aging agent has good protection effect on rubber thermo-oxidative aging, has a certain inhibition effect on metal catalytic aging, has low toxicity, and is the most common anti-thermo-oxidative aging agent at present. RD is composed of monomers and multimers (dimers, trimers, tetramers) of 2,2, 4-trimethyl-1, 2-dihydroquinoline, wherein the effective component is multimer. The trimer and the tetramer have large molecular weight, are not easy to migrate, have excellent thermal oxidation aging resistance under a static condition, but have insufficient dynamic performance; the dimer has good thermal oxidation aging resistance under dynamic and static conditions, but has certain mobility due to small molecular weight.
The rubber antioxidant 4020[ N- (1, 3-dimethylbutyl) -N' -phenyl-p-phenylenediamine ] is a universal variety with excellent performance in amine antioxidants, has excellent ozone aging cracking and flex cracking resistance, has a certain passivation effect on variable-valence metals, is the most commonly used dynamic ozone aging inhibitor at present, and is often used together with RD (RD). However, because of its small molecular weight, it is easy to migrate and precipitate particularly in high temperature rubber products such as tires, which not only affects the long-term protection effect, but also makes the products turn reddish and affects the appearance.
The static ozone aging resistant effect of the rubber antioxidant 4030[ N-N' -bis (1, 4-dimethylpentyl) -p-phenylenediamine ] is the most excellent in the p-phenylenediamine antioxidants, but the dynamic protection effect is almost not.
The invention aims to combine the advantages and disadvantages of various important anti-aging agents and obtain a protective material with excellent comprehensive protection effect through improvement.
Disclosure of Invention
The invention aims to provide a vulcanization-accelerated comprehensive protective material and a preparation method thereof. The protective material prepared by the method has excellent effects of resisting thermal oxygen, static ozone, dynamic ozone and heavy metal ion toxicity, and has a certain promotion effect on rubber vulcanization, so that the use of a vulcanization activator is reduced.
In order to achieve the purpose, the invention is realized by the following technical scheme: the vulcanization-promoted comprehensive protection material consists of an anti-aging agent RD, an anti-aging agent 4020, an anti-aging agent 4030 and zinc terephthalate.
The method for preparing the vulcanization-promoted comprehensive protective material comprises the following steps:
(1) adding the antioxidant RD, the antioxidant 4020 and the antioxidant 4030 into acetone in proportion, stirring until the mixture is dissolved, and adding an emulsifier to obtain an emulsion system A;
(2) dispersing zinc terephthalate in acetone, and adding an emulsifier to obtain an emulsion system B;
(3) and (3) fully mixing the system A in the step (1) and the system B in the step (2) in a homogenizer, recovering acetone through distillation, conveying the rest substances into a storage tank in a heat preservation state, cooling to a proper temperature, and granulating through a steel belt cooling granulator to obtain a final granular finished product.
Furthermore, the proportion of the antioxidant RD, the antioxidant 4020, the antioxidant 4030 and the zinc terephthalate is (by weight parts) 25-30: 20-25: 20-35.
Further, the emulsifier is at least one selected from sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, sodium palmitate, OP-10, OP-20 and OP-50.
Further, the particle diameter D of zinc terephthalate is preferable97Less than 3 microns, and BET specific surface area greater than 80m2/g。
Has the advantages that:
(1) the preparation method can ensure that all the components can be fully and uniformly mixed, and coordination bonds are formed between various anti-aging agents and zinc terephthalate; in addition, zinc terephthalate forms salt cross-linking bonds with rubber molecules during rubber vulcanization. Therefore, the target product overcomes the defect that the raw material anti-aging agent is easy to migrate and frost in rubber, thereby relieving the defects of insufficient long-term aging performance and easy reddening of rubber products.
(2) The target product of the invention has the following effects: the product has excellent thermal oxidation aging resistance of RD, dynamic ozone resistance of 4020 and static ozone resistance of 4030; in addition, the zinc terephthalate has good complexing effect on heavy metals, can stabilize heavy metal ions, and improves the effect of preventing metal poisoning. Therefore, the synergistic effect among the components ensures that the target product prepared by the invention has excellent comprehensive protection effect.
(3) The zinc terephthalate has certain vulcanization activity in rubber, can promote the vulcanization crosslinking process, shorten the vulcanization time and improve the crosslinking density, so that the use of the traditional activator zinc oxide can be properly reduced in the formula of the product, thereby reducing the zinc content in the rubber material and the volume cost of the product.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples. The invention will be better understood from the following examples. The examples are not intended to limit the scope of the present invention.
Example 1
The vulcanization-promoted comprehensive protective material comprises the following components: antioxidant RD, antioxidant 4020, antioxidant 4030 and zinc terephthalate.
The method for preparing the vulcanization-promoted comprehensive protective material comprises the following steps:
(1) adding the antioxidant RD, the antioxidant 4020 and the antioxidant 4030 into acetone in proportion, stirring until the mixture is dissolved, and adding an emulsifier to obtain an emulsion system A;
(2) dispersing zinc terephthalate in acetone, and adding an emulsifier to obtain an emulsion system B;
(3) and (3) fully mixing the system A in the step (1) and the system B in the step (2) in a homogenizer, recovering acetone through distillation, conveying the rest substances into a storage tank in a heat preservation state, cooling to a proper temperature, and granulating through a steel belt cooling granulator to obtain a final granular finished product.
Further, the proportion of the antioxidant RD, the antioxidant 4020, the antioxidant 4030 and the zinc terephthalate (by weight parts) is 25: 20: 35.
Further, the emulsifier is selected from sodium lauryl sulfate.
Further, the particle diameter D97 of zinc terephthalate was 2.5 μm, and the BET specific surface area was 85m 2/g.
Example 2
Example 2 differs from example 1 in that:
further, the ratio of the antioxidant RD, the antioxidant 4020, the antioxidant 4030 and the zinc terephthalate (by weight parts) is 30: 25: 20.
Further, the emulsifier is selected from OP-10.
Further, the particle diameter D97 of zinc terephthalate was 1.5. mu.m, and the BET specific surface area was 100m 2/g.
Example 3
Example 3 differs from example 1 in that:
further, the proportion of the antioxidant RD, the antioxidant 4020, the antioxidant 4030 and the zinc terephthalate (by weight) is 28: 23: 26.
Further, the emulsifier is selected from a mixture of sodium palmitate and OP-20.
Further, the particle diameter D97 of zinc terephthalate was 0.8. mu.m, and the BET specific surface area was 150m 2/g.
Comparative example 1
Comparative example 1 differs from example 1 in that:
adding antiager RD, antiager 4020 and antiager 4030 into acetone at a ratio (by weight) of 38.46: 30.77, stirring for dissolving, recovering acetone by distillation, cooling the rest substances to appropriate temperature, and crushing to obtain the final product.
Comparative example 2
Comparative example 2 differs from example 1 in that:
the antioxidant RD, the antioxidant 4020, the antioxidant 4030 and the zinc terephthalate are uniformly mixed in a high-speed mixer according to the proportion (by weight) of 25: 20: 35.
Application test:
comparative tests for the application of anti-aging agents were carried out in the following manner.
1. Formulation of
Various protective materials are applied to a tire tread formula, and the formula is as follows: NR 100, stearic acid 2, zinc oxide (variable), sulfur 1.2, NOBS 1.6, N22045, aromatic oil 5, protective wax 2 and anti-aging agent (variable and variable), and the specific formula arrangement is shown in Table 1. In addition, copper in an amount of 0.005% by mass of the rubber compound was additionally added to the formulation, formulation 3 and formulation 5.
Table 1 test formulations
| Item | Formulation 1 | Formulation 2 | Formulation 3 | Formulation 4 | Formulation 5 |
| NR | 100 | 100 | 100 | 100 | 100 |
| Stearic acid | 2 | 2 | 2 | 2 | 2 |
| Sulfur | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 |
| NOBS | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 |
| N220 | 45 | 45 | 45 | 45 | 45 |
| Aromatic oil | 5 | 5 | 5 | 5 | 5 |
| Protective wax | 2 | 2 | 2 | 2 | 2 |
| Zinc oxide | 4 | 3 | 4 | 3 | 4 |
| Example 1 anti-aging agent | 2 | 2 | |||
| Comparative example 1 antioxidant | 2 | 2 | |||
| Comparative example 2 antioxidant | 2 |
2. Mechanical property test
On a double-roller open mill, firstly plasticating the natural rubber, then adding various auxiliary agents to obtain mixed rubber, and then vulcanizing at 151 ℃ for normal vulcanization time to obtain vulcanized rubber. Aging test conditions: 48 hours at 100 ℃, 72 hours at 100 ℃ and 144 hours at 100 ℃. The test was carried out according to the national standard and the properties obtained are shown in Table 2.
Table 2 performance test data
3. Static ozone aging resistance test
The formula 1, formula 3 and formula 5 rubber materials are subjected to static ozone aging resistance, and the test piece is aged after being stretched by 60%.
The test was carried out in hot summer with a temperature above 30 ℃ during the day. After one and a half month, no breach was observed for formulas 1,3 and 5; after two and a half months, the formulas 1 and 3 still have no crack, and the formula 5 has tiny cracks; after three months, minor cracks appeared in formulations 1 and 3, with the most severe cracks in formulation 5; after four months, it is clear that the split was most severe for formula 5, 3 times for formula 1, and relatively minimal for formula 1.
Comparing the performance data of table 2 with the static ozone aging resistance test results, it can be seen that: the target product prepared by the invention has the most excellent hot oxygen resistance and ozone resistance under dynamic and static conditions, and can still maintain the performance of vulcanized rubber under the condition of reduction of zinc oxide serving as an activating agent.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the foregoing description only for the purpose of illustrating the principles of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims, specification, and equivalents thereof.
Claims (4)
1. A vulcanization-accelerated comprehensive protective material is characterized by consisting of an anti-aging agent RD, an anti-aging agent 4020, an anti-aging agent 4030 and zinc terephthalate; the ratio of the antioxidant RD to the antioxidant 4020 to the antioxidant 4030 to the zinc terephthalate is 25-30: 20-25: 20-35 in parts by weight;
the preparation method of the vulcanization-accelerated comprehensive protective material comprises the following steps:
(1) adding the antioxidant RD, the antioxidant 4020 and the antioxidant 4030 into acetone in proportion, stirring until the mixture is dissolved, and adding an emulsifier to obtain an emulsion system A;
(2) dispersing zinc terephthalate in acetone, and adding an emulsifier to obtain an emulsion system B;
(3) and (3) fully mixing the system A in the step (1) and the system B in the step (2) in a homogenizer, recovering acetone through distillation, conveying the rest substances into a storage tank in a heat preservation state, cooling to a proper temperature, and granulating through a steel belt cooling granulator to obtain a final granular finished product.
2. The method for preparing the vulcanization-accelerating type composite protective material as set forth in claim 1, characterized by comprising the steps of:
(1) adding the antioxidant RD, the antioxidant 4020 and the antioxidant 4030 into acetone in proportion, stirring until the mixture is dissolved, and adding an emulsifier to obtain an emulsion system A;
(2) dispersing zinc terephthalate in acetone, and adding an emulsifier to obtain an emulsion system B;
(3) and (3) fully mixing the system A in the step (1) and the system B in the step (2) in a homogenizer, recovering acetone through distillation, conveying the rest substances into a storage tank in a heat preservation state, cooling to a proper temperature, and granulating through a steel belt cooling granulator to obtain a final granular finished product.
3. The method for preparing a vulcanization accelerating type composite protective material according to claim 2, wherein the emulsifier is at least one selected from the group consisting of sodium lauryl sulfate, sodium dodecylbenzenesulfonate, sodium palmitate, OP-10, OP-20 and OP-50.
4. The method for producing a vulcanization-accelerating type composite protective material as claimed in claim 2, wherein the particle diameter D of zinc terephthalate is97Less than 3 microns, and BET specific surface area greater than 80m2/g。
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| CN202010336203.3A CN111303480B (en) | 2020-04-26 | 2020-04-26 | Vulcanization-promoted comprehensive protective material and preparation method thereof |
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| CN202010336203.3A CN111303480B (en) | 2020-04-26 | 2020-04-26 | Vulcanization-promoted comprehensive protective material and preparation method thereof |
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