CN117511008A - Calendaring type black sole rubber easy to take out and preparation method thereof - Google Patents
Calendaring type black sole rubber easy to take out and preparation method thereof Download PDFInfo
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- CN117511008A CN117511008A CN202311565735.4A CN202311565735A CN117511008A CN 117511008 A CN117511008 A CN 117511008A CN 202311565735 A CN202311565735 A CN 202311565735A CN 117511008 A CN117511008 A CN 117511008A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 145
- 239000005060 rubber Substances 0.000 title claims abstract description 145
- 238000003490 calendering Methods 0.000 title claims abstract description 34
- 241000028631 Microstomus pacificus Species 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 63
- 239000006229 carbon black Substances 0.000 claims abstract description 50
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 32
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 20
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 20
- 229920001194 natural rubber Polymers 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000005282 brightening Methods 0.000 claims abstract description 18
- 239000012936 vulcanization activator Substances 0.000 claims abstract description 18
- 239000004927 clay Substances 0.000 claims abstract description 15
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract description 15
- 239000005061 synthetic rubber Substances 0.000 claims abstract description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 14
- 239000011593 sulfur Substances 0.000 claims abstract description 14
- 239000006082 mold release agent Substances 0.000 claims abstract description 3
- 238000007670 refining Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 30
- 150000001875 compounds Chemical class 0.000 claims description 27
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 24
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 18
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 12
- 238000010408 sweeping Methods 0.000 claims description 12
- 235000021355 Stearic acid Nutrition 0.000 claims description 10
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 10
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 239000008117 stearic acid Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004513 sizing Methods 0.000 claims description 8
- 238000004073 vulcanization Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000011787 zinc oxide Substances 0.000 claims description 7
- 238000007605 air drying Methods 0.000 claims description 6
- 239000000805 composite resin Substances 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 4
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 3
- 239000004200 microcrystalline wax Substances 0.000 claims description 3
- 239000011297 pine tar Substances 0.000 claims description 3
- 229940068124 pine tar Drugs 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000011269 tar Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000013543 active substance Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000012216 screening Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 3
- 239000005062 Polybutadiene Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007723 die pressing method Methods 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 210000001161 mammalian embryo Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007493 shaping process Methods 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
- C08L7/00—Compositions of natural rubber
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a calendaring type black sole rubber easy to go out, which comprises, by mass, 65-75 parts of natural rubber, 25-35 parts of synthetic rubber, 2.0-2.6 parts of sulfur, 1.5-2.5 parts of accelerator, 4-5 parts of vulcanization activator, 7-9 parts of tackifier, 2-3 parts of anti-aging agent, 0.5-0.7 part of mold release agent, 70-80 parts of medium super wear-resistant carbon black, 10-20 parts of white carbon black, 25-35 parts of rubber softener, 0.1-0.3 part of brightening agent, 10-20 parts of high-strength reclaimed rubber and 10-15 parts of clay. The invention improves the formula and the preparation method of the sole rubber, and the sole rubber with excellent calendaring process performance, good wear resistance and good wearing resistance is obtained through screening, the sole acle abrasion volume is 0.5-0.6 cm < 3 >/1.61 km, the tensile strength is more than 11.0MPa, and the service life is prolonged by more than 6 months compared with the original product. The method is simple, and the manufactured product has low cost, low production cost, high production efficiency and good use effect.
Description
Technical Field
The invention relates to rubber and a preparation method thereof, in particular to easily-out calendaring black sole rubber and a preparation method thereof.
Background
According to the application requirement, the sole rubber has a plurality of different proportioning schemes, and the performance indexes of the existing rubber sole are generally as follows: the tensile strength is 6.5-9.0 Mpa (the industry standard HG/T2495-2020 is not less than 8.5 MPa); elongation at break 220-380% (industry standard HG/T2495-2020 is ≡ 360%); the Aldrich abrasion volume is 0.9-1.6 cm3/1.61km (industry standard HG/T2495-2020 +.0.95 cm3/1.61 km); the service life of the rubber shoes is only 1-2 months. When the rubber shoes are manufactured by molding, the process mode is classified into a calendaring bottom attaching process, a die pressing unit bottom attaching process and a die pressing molding process, and the process performance requirements of the calendaring bottom attaching process on rubber are most severe, the performance index is controlled unstably, scorching, shrinkage, unclear patterns, sticking rollers and other factors which restrict the production efficiency are generated, so that the molding qualification rate of the rubber sheets is reduced, the normal production is affected, the defects are overcome, and the production and use requirements of high quality, low cost and high efficiency are difficult to meet.
Disclosure of Invention
The invention aims to provide a calendaring black sole rubber easy to take out and a preparation method thereof. The formed rubber sole has excellent performances, can meet the requirements of high-quality, low-cost and high-efficiency production and use, and overcomes the defects of the prior art.
The technical scheme of the invention is as follows: the easily-out calendaring black sole rubber comprises, by mass, 65-75 parts of natural rubber, 25-35 parts of synthetic rubber, 2.0-2.6 parts of sulfur, 1.5-2.5 parts of accelerator, 4-5 parts of vulcanization activator, 7-9 parts of tackifier, 2-3 parts of anti-aging agent, 0.5-0.7 part of mold release agent, 70-80 parts of medium super wear-resistant carbon black, 10-20 parts of white carbon black, 25-35 parts of rubber softener, 0.1-0.3 part of brightening agent, 10-20 parts of high-strength reclaimed rubber and 10-15 parts of clay.
The calendaring type black sole rubber easy to go out comprises, by mass, 70 parts of natural rubber, 30 parts of synthetic rubber, 2.0 parts of sulfur, 2.0 parts of accelerator, 4.5 parts of vulcanization activator, 8 parts of tackifier, 2.5 parts of anti-aging agent, 0.6 part of release agent, 75 parts of medium super wear-resistant carbon black, 15 parts of white carbon black, 30 parts of rubber softener, 0.2 part of brightening agent, 15 parts of high-strength reclaimed rubber and 13 parts of clay.
In the rolling type black sole rubber easy to take out, the synthetic rubber is cis-butadiene rubber; the specification of the natural rubber is 2# standard rubber; the brightening agent is 80# microcrystalline wax.
In the easy-out calendaring black sole rubber, the vulcanization activator is prepared according to the following proportion: every 4.5 parts of vulcanization activator consists of 2.0 parts of stearic acid and 2.5 parts of nano zinc oxide.
In the easy-out calendaring black sole rubber, the accelerator is prepared according to the following proportion: each 2.0 parts of accelerator consists of 0.5 parts of accelerator DM, 1.0 part of accelerator M and 0.5 part of accelerator DS.
In the easy-out calendaring black sole rubber, the anti-aging agent is prepared according to the following proportion: each 2.5 parts of the anti-aging agent consists of 2.0 parts of anti-aging agent CD and 0.5 part of anti-aging agent KY-405L.
In the easy-out calendaring black sole rubber, the tackifier is prepared according to the following proportion: every 8 parts of tackifier consists of 5 parts of pine tar and 3 parts of composite resin DS-B; medium super wear-resistant carbon black is N220 carbon black; the specification of the white carbon black is a precipitation method; the rubber softener is prepared from the following components in percentage by weight: each 30 parts of rubber softener consists of 18 parts of rubber softening oil and 12 parts of solid coumarone.
The preparation method of the easy-to-take calendaring black sole rubber comprises the following steps of:
(1) Preparing a carbon black masterbatch, putting 42.9% of natural rubber and all synthetic rubber into an internal mixer, adding a masterbatch intermediate material, wherein the masterbatch intermediate material is stearic acid accounting for 60% of the total amount and solid coumarone accounting for 33.3% of the total amount, adding N220 carbon black accounting for 57.3% of the total amount after the masterbatch intermediate material is subjected to pressure refining for 0.5min, then carrying out pressure refining for 5min, sweeping powder, then carrying out pressure refining for 3min, sweeping powder again, adding rubber softening oil accounting for 44.4% of the total amount when white smoke is generated at a feed opening of the internal mixer, carrying out pressure refining for 5min, discharging, putting into an open mill, pulling for 8-10 channels under the condition of 5-6mm of roll spacing, discharging sheets after the surface of the rubber material is smooth, cooling by water, air drying, and storing for 12h to obtain the carbon black masterbatch;
(2) Manufacturing a rubber compound: adding the rest natural rubber and all high-strength reclaimed rubber into an internal mixer, adding a master batch intermediate material which is the rest stearic acid, the rest solid coumarone, all brightening agents and all anti-aging agents KY-405L into the internal mixer, adding the rest N220 carbon black after 0.5min of pressure refining, then carrying out pressure refining for 5min, sweeping powder, then carrying out pressure refining for 3min, sweeping powder again, when white smoke is generated at a material inlet of the internal mixer, carrying out pressure refining for 1.5min, discharging, entering an open mill, pulling through for 8-10 times under the condition of a roll gap of 5-6mm, discharging sheets after the surface of the rubber material is smooth, cooling with water, air drying, and storing for 12h to obtain a combined rubber;
(3) Manufacturing a rubber compound: adding the carbon black masterbatch in the step (1), the masterbatch in the step (2), all clay and all loose tar into an internal mixer, carrying out pressure refining for 0.5-1 min, then carrying out pressure refining for 1min, adding all white carbon black, then carrying out pressure refining for 1-1.5min, adding the rest rubber softening oil, carrying out pressure refining for one min, discharging, immediately feeding the discharged sizing material into an open rubber mixer with a roll spacing of 4-5 mm, carrying out cross-rolling for 4-6 times to reduce the sizing material temperature, adding all sulfur, uniformly rolling, discharging slices with a thickness of 4-6 mm, adopting normal-temperature water cooling, standing for more than 24 hours to obtain a rubber compound, and carrying out inspection on the rubber compound to obtain a rubber compound finished product.
In the preparation method of the easy-out calendaring black sole rubber, the mixture is prepared from all accelerators, all nano zinc oxide in the vulcanization activator, all anti-aging agents CD, all release agents and all composite resins DS-B.
In the preparation method of the easy-out calendaring black sole rubber, the test index of the rubber compound is that the rubber compound has a Wipe plasticity of 0.30-0.36, a Shore A hardness of 65-70 degrees, a specific gravity of 1.20+/-0.02 and a vulcanization starting point of 2 '50' -3 '10'.
The invention combines ingredients to make them play a positive role in product performance, and the invention comprises the following steps:
1) White carbon black and medium super wear-resistant are used to be matched with tackifier, so that the rubber pasting capability is improved. Through the design of the compounding agent system, the wear resistance and the service life of the rubber are ensured, and the normal processing of the rubber is ensured.
TABLE 1
As shown in table 1, the optimal proportions of raw rubber and filling system are: 70 parts of natural rubber (namely, 2# standard rubber), 30 parts of synthetic rubber (comprising 30 parts of butadiene rubber), 75 parts of medium and super wear-resistant carbon black, 15 parts of white carbon black, 8 parts of tackifier, 18 parts of rubber softening oil and 12 parts of solid coumarone.
TABLE 2
Table 2 shows the optimum amounts of the following compounding agents: 2.0 parts of sulfur, 2.0 parts of accelerator (0.5 part of accelerator DM, 1.0 part of accelerator M and 0.5 part of accelerator DS), 4.5 parts of active agent (2 parts of stearic acid and 2.5 parts of nano zinc oxide), and 2.5 parts of anti-aging agent (2.0 parts of anti-aging agent and 2.0 parts of anti-aging agent KY-405L).
2) By adopting 0.6 part of the rubber internal release agent, the rigidity of rubber molecular cross-linking bonds is improved, excellent demolding capability is provided, the phenomenon of sizing material calendaring and sticking rollers is reduced, and high yield efficiency is achieved. By adopting 0.2 part of brightening agent, the anti-aging protection capability of the rubber is improved, the brightness of the rubber of the sole is improved, and the appearance quality level is increased. By adopting 15 parts of high-strength reclaimed rubber and 13 parts of clay, the cost reduction effect of the rubber material is realized, the low-cost operation effect is achieved, and the three unification effects of high yield, high quality and low cost are achieved.
TABLE 3 Table 3
As shown in Table 3, the optimum amount of the release agent in rubber was 0.6 part, the optimum amount of the brightening agent was 0.2 part, the optimum amount of the high-strength reclaimed rubber was 15 parts, and the optimum amount of the clay was 13 parts. The rubber has the best comprehensive performance under the system condition.
3) Relation between plasticity and rubber property of rubber compound
TABLE 4 Table 4
Table 4 shows that the rubber compound has plasticity of 0.30-0.36 and vulcanization starting point of 3'00 "(between 2'50 ' -3'20 ', and the obtained rubber compound has optimal physical properties and technological properties.
As the technical scheme is adopted, compared with the prior art, the invention improves the formula and the preparation method of the sole rubber, and the sole rubber with high tensile property and good wear resistance is obtained by screening, the calendaring process performance is excellent, and the sole acle abrasion volume is 0.5-0.6 cm 3 And the service life of the product is longer than that of the original product by 1.61km, more than 6 months, the method is simple, the manufactured product has low cost, high production efficiency and good use effect.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to be limiting.
Example 1 of the present invention: the calendaring type black sole rubber easy to get comprises, by mass, 70 parts of natural rubber, 30 parts of synthetic rubber, 2.0 parts of sulfur, 2.0 parts of accelerator, 4.5 parts of vulcanization activator, 8 parts of tackifier, 2.5 parts of anti-aging agent, 0.6 part of release agent, 75 parts of medium super wear-resistant carbon black, 15 parts of white carbon black, 30 parts of rubber softener, 0.2 part of brightening agent, 15 parts of high-strength reclaimed rubber and 13 parts of clay.
Example 2 of the present invention: the calendaring type black sole rubber easy to take out comprises the following components in parts by weight: 72 parts of natural rubber, 28 parts of synthetic rubber, 2.0 parts of sulfur, 2.0 parts of accelerator, 5 parts of vulcanization activator, 8 parts of tackifier, 2.5 parts of anti-aging agent, 0.6 part of release agent, 73 parts of medium super wear-resistant carbon black, 18 parts of white carbon black, 30 parts of rubber softener, 0.2 part of brightening agent, 12 parts of high-strength reclaimed rubber and 13 parts of clay.
Example 3 of the present invention: the calendaring type black sole rubber easy to take out comprises the following components in parts by weight: 65 parts of natural rubber, 25 parts of synthetic rubber, 2.0 parts of sulfur, 1.5 parts of accelerator, 4 parts of vulcanization activator, 7 parts of tackifier, 2.0 parts of anti-aging agent, 0.5 part of release agent, 70 parts of medium super wear-resistant carbon black, 10 parts of white carbon black, 25 parts of rubber softener, 0.1 part of brightening agent, 10 parts of high-strength reclaimed rubber and 10 parts of clay.
Example 4 of the present invention: the calendaring type black sole rubber easy to take out comprises the following components in parts by weight: 75 parts of natural rubber, 35 parts of synthetic rubber, 2.6 parts of sulfur, 2.5 parts of accelerator, 5 parts of vulcanization activator, 9 parts of tackifier, 3 parts of anti-aging agent, 0.7 part of release agent, 80 parts of medium super wear-resistant carbon black, 20 parts of white carbon black, 35 parts of rubber softener, 0.3 part of brightening agent, 20 parts of high-strength reclaimed rubber and 15 parts of clay.
Example 1 of the present invention: the calendaring type black sole rubber easy to get comprises, by mass, 70 parts of natural rubber, 30 parts of synthetic rubber, 2.3 parts of sulfur, 2.0 parts of accelerator, 4.5 parts of vulcanization activator, 8 parts of tackifier, 2.5 parts of anti-aging agent, 0.6 part of release agent, 75 parts of medium super wear-resistant carbon black, 15 parts of white carbon black, 30 parts of rubber softener, 0.2 part of brightening agent, 15 parts of high-strength reclaimed rubber and 13 parts of clay.
In the above embodiment, the synthetic glue is cis-butadiene glue; the specification of the natural rubber is 2# standard rubber; the brightening agent is 80# microcrystalline wax.
The vulcanization activator described in the above examples was prepared according to the following proportions: every 4.5 parts of vulcanization activator consists of 2.0 parts of stearic acid and 2.5 parts of nano zinc oxide.
The accelerators described in the above examples were prepared according to the following proportions: each 2.0 parts of accelerator consists of 0.5 parts of accelerator DM, 1.0 part of accelerator M and 0.5 part of accelerator DS.
The anti-aging agent in the embodiment is prepared from the following components in proportion: each 2.5 parts of the anti-aging agent consists of 2.0 parts of anti-aging agent CD and 0.5 part of anti-aging agent KY-405L.
The tackifier in the above examples was prepared according to the following proportions: every 8 parts of tackifier consists of 5 parts of pine tar and 3 parts of composite resin DS-B; medium super wear-resistant carbon black is N220 carbon black; the specification of the white carbon black is a precipitation method; the rubber softener is prepared from the following components in percentage by weight: each 30 parts of rubber softener consists of 18 parts of rubber softening oil and 12 parts of solid coumarone.
The preparation method of the calendaring type black sole rubber with the easy-out type embodiment comprises the following steps of taking the components in parts by weight:
(1) Preparing a carbon black masterbatch, putting 42.9% of natural rubber and all synthetic rubber into an internal mixer, adding a masterbatch intermediate material, wherein the masterbatch intermediate material is stearic acid accounting for 60% of the total amount and solid coumarone accounting for 33.3% of the total amount, adding N220 carbon black accounting for 57.3% of the total amount after the masterbatch intermediate material is subjected to pressure refining for 0.5min, then carrying out pressure refining for 5min, sweeping powder, then carrying out pressure refining for 3min, sweeping powder again, adding rubber softening oil accounting for 44.4% of the total amount when white smoke is generated at a feed opening of the internal mixer, carrying out pressure refining for 5min, discharging, putting into an open mill, pulling for 8-10 channels under the condition of 5-6mm of roll spacing, discharging sheets after the surface of the rubber material is smooth, cooling by water, air drying, and storing for 12h to obtain the carbon black masterbatch;
(2) Manufacturing a rubber compound: adding the rest natural rubber and all high-strength reclaimed rubber into an internal mixer, adding a master batch intermediate material which is the rest stearic acid, the rest solid coumarone, all brightening agents and all anti-aging agents KY-405L into the internal mixer, adding the rest N220 carbon black after 0.5min of pressure refining, then carrying out pressure refining for 5min, sweeping powder, then carrying out pressure refining for 3min, sweeping powder again, when white smoke is generated at a material inlet of the internal mixer, carrying out pressure refining for 1.5min, discharging, entering an open mill, pulling through for 8-10 times under the condition of a roll gap of 5-6mm, discharging sheets after the surface of the rubber material is smooth, cooling with water, air drying, and storing for 12h to obtain a combined rubber;
(3) Manufacturing a rubber compound: adding the carbon black masterbatch in the step (1), the masterbatch in the step (2), all clay and all loose tar into an internal mixer, carrying out pressure refining for 0.5-1 min, then carrying out pressure refining for 1min, adding all white carbon black, then carrying out pressure refining for 1-1.5min, adding the rest rubber softening oil, carrying out pressure refining for one min, discharging, immediately feeding the discharged sizing material into an open rubber mixer with a roll spacing of 4-5 mm, carrying out cross-rolling for 4-6 times to reduce the sizing material temperature, adding all sulfur, uniformly rolling, discharging slices with a thickness of 4-6 mm, adopting normal-temperature water cooling, standing for more than 24 hours to obtain a rubber compound, and carrying out inspection on the rubber compound to obtain a rubber compound finished product.
The rubber compound comprises all accelerators, all nano zinc oxide in the vulcanization activator, all anti-aging agents CD, all release agents and all composite resins DS-B.
The test index of the rubber compound is that the rubber compound has the Wipe plasticity of 0.28-0.36, the Shore A hardness of 65-70 degrees, the specific gravity of 1.20+/-0.02 and the vulcanization starting point at 143 ℃ of 2 '50' -3 '10'.
The rubber compound is heated and evenly refined at the temperature of 40-60 ℃, and then calendared out and cut into shoe sole sizing material embryo pieces; and then the rubber blank sheet is bonded and molded to manufacture rubber shoes, and the rubber shoes are manufactured by vulcanization shaping according to the rubber shoe vulcanization procedure under the conditions of the vulcanization pressure of 0.37-0.39 MPa.
Claims (10)
1. The calendaring type black sole rubber easy to take out is characterized in that: the high-strength reclaimed rubber comprises, by mass, 65-75 parts of natural rubber, 25-35 parts of synthetic rubber, 2.0-2.6 parts of sulfur, 1.5-2.5 parts of accelerator, 4-5 parts of vulcanization active agent, 7-9 parts of tackifier, 2-3 parts of anti-aging agent, 0.5-0.7 part of release agent, 70-80 parts of medium super wear-resistant carbon black, 10-20 parts of white carbon black, 25-35 parts of rubber softener, 0.1-0.3 part of brightening agent, 10-20 parts of high-strength reclaimed rubber and 10-15 parts of clay.
2. The easy-out calendered black sole rubber of claim 1, wherein: the high-strength rubber comprises, by mass, 70 parts of natural rubber, 30 parts of synthetic rubber, 2.0 parts of sulfur, 2.0 parts of an accelerator, 4.5 parts of a vulcanization activator, 8 parts of a tackifier, 2.5 parts of an anti-aging agent, 0.6 part of a mold release agent, 75 parts of medium super wear-resistant carbon black, 15 parts of white carbon black, 30 parts of a rubber softener, 0.2 part of a brightening agent, 15 parts of high-strength reclaimed rubber and 13 parts of clay.
3. The easy-out calendered black sole rubber according to claim 1 or 2, characterized in that: the synthetic glue is cis-butadiene glue; the specification of the natural rubber is 2# standard rubber; the brightening agent is 80# microcrystalline wax.
4. The easy-out calendered black sole rubber according to claim 1 or 2, characterized in that: the vulcanization activator is prepared according to the following proportion: every 4.5 parts of vulcanization activator consists of 2.0 parts of stearic acid and 2.5 parts of nano zinc oxide.
5. The easy-out calendered black sole rubber according to claim 1 or 2, characterized in that: the accelerator is prepared from the following components in percentage by weight: each 2.0 parts of accelerator consists of 0.5 parts of accelerator DM, 1.0 part of accelerator M and 0.5 part of accelerator DS.
6. The easy-out calendered black sole rubber according to claim 1 or 2, characterized in that: the anti-aging agent is prepared from the following components in percentage by weight: each 2.5 parts of the anti-aging agent consists of 2.0 parts of anti-aging agent CD and 0.5 part of anti-aging agent KY-405L.
7. The easy-out calendered black sole rubber according to claim 1 or 2, characterized in that: the tackifier is prepared from the following components in percentage by weight: every 8 parts of tackifier consists of 5 parts of pine tar and 3 parts of composite resin DS-B; medium super wear-resistant carbon black is N220 carbon black; the specification of the white carbon black is a precipitation method; the rubber softener is prepared from the following components in percentage by weight: each 30 parts of rubber softener consists of 18 parts of rubber softening oil and 12 parts of solid coumarone.
8. A method for preparing the easy-to-go calendared black sole rubber according to any one of claims 1-7, wherein: the components are taken according to the parts by weight, and then the following steps are carried out:
(1) Preparing a carbon black masterbatch, putting 42.9% of natural rubber and all synthetic rubber into an internal mixer, adding a masterbatch intermediate material, wherein the masterbatch intermediate material is stearic acid accounting for 60% of the total amount and solid coumarone accounting for 33.3% of the total amount, adding N220 carbon black accounting for 57.3% of the total amount after the masterbatch intermediate material is subjected to pressure refining for 0.5min, then carrying out pressure refining for 5min, sweeping powder, then carrying out pressure refining for 3min, sweeping powder again, adding rubber softening oil accounting for 44.4% of the total amount when white smoke is generated at a feed opening of the internal mixer, carrying out pressure refining for 5min, discharging, putting into an open mill, pulling for 8-10 channels under the condition of 5-6mm of roll spacing, discharging sheets after the surface of the rubber material is smooth, cooling by water, air drying, and storing for 12h to obtain the carbon black masterbatch;
(2) Manufacturing a rubber compound: adding the rest natural rubber and all high-strength reclaimed rubber into an internal mixer, adding a master batch intermediate material which is the rest stearic acid, the rest solid coumarone, all brightening agents and all anti-aging agents KY-405L into the internal mixer, adding the rest N220 carbon black after 0.5min of pressure refining, then carrying out pressure refining for 5min, sweeping powder, then carrying out pressure refining for 3min, sweeping powder again, when white smoke is generated at a material inlet of the internal mixer, carrying out pressure refining for 1.5min, discharging, entering an open mill, pulling through for 8-10 times under the condition of a roll gap of 5-6mm, discharging sheets after the surface of the rubber material is smooth, cooling with water, air drying, and storing for 12h to obtain a combined rubber;
(3) Manufacturing a rubber compound: adding the carbon black masterbatch in the step (1), the masterbatch in the step (2), all clay and all loose tar into an internal mixer, carrying out pressure refining for 0.5-1 min, then carrying out pressure refining for 1min, adding all white carbon black, then carrying out pressure refining for 1-1.5min, adding the rest rubber softening oil, carrying out pressure refining for one min, discharging, immediately feeding the discharged sizing material into an open rubber mixer with a roll spacing of 4-5 mm, carrying out cross-rolling for 4-6 times to reduce the sizing material temperature, adding all sulfur, uniformly rolling, discharging slices with a thickness of 4-6 mm, adopting normal-temperature water cooling, standing for more than 24 hours to obtain a rubber compound, and carrying out inspection on the rubber compound to obtain a rubber compound finished product.
9. The method for preparing the easy-out calendaring type black sole rubber according to claim 8, wherein the method comprises the following steps: the rubber compound comprises all accelerators, all nano zinc oxide in the vulcanization activator, all anti-aging agents CD, all release agents and all composite resins DS-B.
10. The method for preparing the easy-out calendaring type black sole rubber according to claim 8, wherein the method comprises the following steps: the test index of the rubber compound is that the rubber compound has the Wipe plasticity of 0.30-0.36, the Shore A hardness of 65-70 degrees, the specific gravity of 1.20+/-0.02 and the vulcanization starting point at 143 ℃ of 2 '50' -3 '10'.
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