CN117362769A - Light-loss type high-performance black sole rubber and preparation method thereof - Google Patents
Light-loss type high-performance black sole rubber and preparation method thereof Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 172
- 239000005060 rubber Substances 0.000 title claims abstract description 172
- 241000028631 Microstomus pacificus Species 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 65
- 239000006229 carbon black Substances 0.000 claims abstract description 32
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 26
- 238000004073 vulcanization Methods 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 23
- 238000005282 brightening Methods 0.000 claims abstract description 18
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 17
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 17
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007787 solid Substances 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 13
- 239000012936 vulcanization activator Substances 0.000 claims abstract description 12
- 238000005299 abrasion Methods 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 43
- 238000007599 discharging Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 21
- 238000004513 sizing Methods 0.000 claims description 21
- 238000007670 refining Methods 0.000 claims description 16
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 239000000843 powder Substances 0.000 claims description 10
- 239000008117 stearic acid Substances 0.000 claims description 10
- 238000010408 sweeping Methods 0.000 claims description 10
- 239000013543 active substance Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000011787 zinc oxide Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 6
- 210000001161 mammalian embryo Anatomy 0.000 claims description 5
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 4
- 239000004636 vulcanized rubber Substances 0.000 claims description 4
- 241000269978 Pleuronectiformes Species 0.000 claims description 3
- 102000007620 Pulmonary Surfactant-Associated Protein C Human genes 0.000 claims description 3
- 108010007125 Pulmonary Surfactant-Associated Protein C Proteins 0.000 claims description 3
- 239000004902 Softening Agent Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000004200 microcrystalline wax Substances 0.000 claims description 3
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 3
- 238000010074 rubber mixing Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012216 screening Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
- 238000013329 compounding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007334 memory performance Effects 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/122—Soles
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a light-losing type high-performance black sole rubber, which comprises 65 parts of No. 2 standard rubber, 35 parts of butadiene rubber, 2.0 parts of sulfur, 2.2 parts of accelerator, 8.5 parts of vulcanization activator, 13 parts of rubber softener, 3.5 parts of anti-aging agent, 0.8 part of rubber internal mold release agent, 60 parts of medium super wear-resistant carbon black, 0.20 part of brightening agent, 0.4 part of homogenizing agent and 4 parts of solid coumarone. Bottom-making vulcanization temperature conditions: temperature control using intelligence a heat-conducting oil boiler for the chemical treatment of waste water, the control terminal sets a furnace starting temperature of 175℃ the furnace outlet control temperature is 180 ℃, and the furnace stopping temperature is 185 ℃. The bottom-making vulcanizing time is 3.5-4.5 min of mould pressing vulcanizing. The invention improves the formula and the preparation method of the sole rubber, by screening the bottom-making vulcanization process, obtain the sole rubber with high tensile property, good wear resistance and good wear resistance effect, and the sole acle abrasion volume is 0.22-0.25 cm 3 1.61km of the product, the service life is prolonged by more than 6 months compared with the original product, meanwhile, the manufactured rubber shoes have good appearance light-loss effect, the user refinement requirement is satisfied.
Description
Technical Field
The invention relates to rubber and a preparation method thereof, in particular to light-loss type high-performance 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 6-10.0 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 cm 3 1.61km (HG/T2495-2020 industry standard +.0.95 cm3/1.61 km); the service life of the rubber shoes is only 1-2 months, and the appearance color phase is not uniform. As can be seen from the above indexes, the conventional rubber sole has great defects in wearing resistance and hue, so that the service life of the conventional rubber sole is short, the safety is poor, when the vulcanized rubber is used as sole rubber, the use requirement of a high-strength working environment is difficult to meet, and the appearance of the conventional rubber sole cannot meet the requirements of people on the light-losing appearance of the sole.
Disclosure of Invention
The invention aims to provide a light-loss type high-performance black sole rubber and a preparation method thereof. The sole rubber disclosed by the invention has excellent performances, meets the requirements of users in two aspects of memory performance and appearance quality, and overcomes the defects in the prior art.
The technical scheme of the invention is as follows: the light-losing type high-performance black sole rubber comprises, by mass, 60-70 parts of 2# standard rubber, 30-40 parts of butadiene rubber, 1.9-2.1 parts of sulfur, 2.0-2.4 parts of accelerator, 8-9 parts of vulcanization activator, 11-15 parts of rubber softener, 3-4 parts of antioxidant, 0.7-0.9 part of rubber internal mold release agent, 3.5-4.5 parts of solid coumarone, 58-62 parts of medium super wear-resistant carbon black, 0.1-0.3 part of brightening agent and 0.3-0.5 part of homogenizing agent.
The light-loss type high-performance black sole rubber comprises, by mass, 65 parts of 2# standard rubber, 35 parts of butadiene rubber, 2.0 parts of sulfur, 2.2 parts of accelerator, 8.5 parts of vulcanization active agent, 13 parts of rubber softener, 3.5 parts of anti-aging agent, 0.8 part of rubber internal mold release agent, 4 parts of solid coumarone, 60 parts of medium super wear-resistant carbon black, 0.20 part of brightening agent and 0.4 part of homogenizing agent.
In the light-loss type high-performance black sole rubber, the butadiene rubber specification is BR9000, the brightening agent is 80# microcrystalline wax, the rubber softener is 5# spindle oil, and the internal mold release agent specification is DT918.
In the light-loss type high-performance black sole rubber, every 8.5 parts of the vulcanization activator consists of 2.5 parts of stearic acid and 6.0 parts of nano zinc oxide.
In the light-loss type high-performance black sole rubber, every 2.2 parts of accelerator consists of 0.2 part of accelerator DM, 1.8 parts of accelerator CBS and 0.2 part of accelerator DS.
In the light-loss type high-performance black sole rubber, every 3.5 parts of the anti-aging agent consists of 1.5 parts of anti-aging agent 4010NA, 1.5 parts of anti-aging agent CD and 0.5 part of anti-aging agent SP-C.
In the light-loss type high-performance black sole rubber, the medium and ultra-wear-resistant carbon black is N220 carbon black.
The preparation method of the light-loss type high-performance black sole rubber comprises the following steps of:
(1) Preparing a carbon black masterbatch, namely adding 53.8% of standard 2# rubber and 60% of butadiene rubber into an internal mixer, adding a masterbatch intermediate material, namely all brightening agent, all solid coumarone and all 60% of stearic acid, carrying out pressure refining for 0.5min, adding 88.3% of N220 carbon black, carrying out pressure refining for 5min, sweeping powder, carrying out pressure refining for 3min, carrying out pressure refining again, adding 76.9% of rubber softener in total weight when white smoke is generated at the mouth of the internal mixer, carrying out pressure refining for 5min, discharging, entering an open type rubber mixer, pulling through 8-10 channels under the condition of 5-6mm of roll spacing, discharging sheets after the surface of the rubber material is smooth, carrying out water cooling, carrying out air drying, and storing for 12h to obtain the carbon black masterbatch;
(2) Preparing a rubber compound: adding the rest 2# standard rubber into an internal mixer, adding a rubber compound middle material which is all a homogenizing agent and an anti-aging agent, pressing for 0.5min, adding the rest N220 carbon black, pressing for 5min, sweeping powder, pressing for 3min, sweeping powder again, pressing for 2min when white smoke is generated at the mouth of the internal mixer, discharging, feeding into an open rubber mixing machine, pulling through 8-10 channels under the condition of a roll gap of 5-6mm, discharging sheets after the surface of the rubber compound is smooth, cooling with water, airing, and storing for 12h to obtain the rubber compound;
(3) Manufacturing a rubber compound: putting the carbon black masterbatch prepared in the step (1), the masterbatch prepared in the step (2) and the middle rubber compound into an internal mixer, wherein the middle rubber compound comprises all accelerators, all residual vulcanization active agents and all internal rubber release agents, the residual vulcanization active agents comprise residual stearic acid and all nano zinc oxide, after the mixture is subjected to pressure refining for 0.5-1 min, adding the residual rubber softening agent, after the mixture is subjected to pressure refining for 3min, discharging the mixture, immediately putting the discharged rubber compound into an open rubber mixer with a roll gap of 4-5 mm, cross-turning for 4 times, then adding all sulfur, cross-turning for 8-10 times, discharging sheets with a thickness of 4-6 mm, cooling the mixture to room temperature by adopting normal temperature water, and standing for more than 24 hours to obtain a rubber compound, and rapidly inspecting the rubber compound, wherein the quick inspection index is qualified to obtain a rubber compound finished product;
(4) The finished rubber compound is heated and evenly refined on an open rubber mill at the temperature of 40-60 ℃ and then cut into rubber blank sheets for soles with specified weight; and then the sizing material embryo piece is vulcanized for 3.5 to 4.5 minutes by mould pressing under the conditions of 156 to 165 ℃ and the vulcanization pressure of 20MPa, so as to prepare the rubber sole.
In the preparation method of the light-loss type high-performance black sole rubber, the qualification judgment standard of the mixed rubber is as follows: the Wipe plasticity of the compound rubber is 0.25-0.35, the Shore A hardness of the vulcanized rubber at 143 ℃ is 61-64 degrees, the specific gravity is 1.13 plus or minus 0.02, and the vulcanization starting point at 143 ℃ is 2 '40' -3 '50';
the qualified judging standard of the sole performance is as follows: tensile strength is more than 16.5MPa, elongation at break is more than 560%, shore A hardness is 60+/-5 ℃, and Aldrich abrasion value is less than or equal to 0.25cm 3 。
In the preparation method of the light-loss type high-performance black sole rubber, the preparation method comprises the following steps of:
1) After the sizing material is hot refined, a sizing machine is used for automatically discharging a sizing blank, the sizing blank is placed for more than one day after passing through a spacer fluid, and the water is fully volatilized and dried, so that the sizing blank can be put into a bottom making link;
2) In the vulcanization manufacturing process, the mold is subjected to air discharge and pressing, and the mold is required to be loosened and air discharged for three times within 1 minute after the mold is assembled and closed, so that the air discharge process of the rubber material is completed before vulcanization shaping.
The invention combines ingredients to make them play a positive role in product performance, and the invention comprises the following steps:
1) Through the design of the compounding agent system, the wear resistance and the service life of the rubber are improved.
TABLE 1
As shown in table 1, the optimal proportions of raw rubber and filling system are: 65 parts of No. 2 standard rubber, 35 parts of synthetic rubber (composed of 35 parts of butadiene rubber), 60 parts of medium and ultra-wear-resistant carbon black, 13 parts of rubber softener, 4 parts of solid coumarone, 0.4 part of homogenizing agent and 0.8 part of rubber internal release agent.
TABLE 2
From Table 2, the following compounding agents are used in the optimum amounts: 2.0 parts of sulfur, 2.2 parts of accelerator (0.2 part of accelerator DM, 1.8 parts of accelerator CBS and 0.2 part of accelerator DS), 8.5 parts of active agent (2.5 parts of stearic acid and 6.0 parts of nano zinc oxide) and 3.5 parts of anti-aging agent.
2) By adopting 0.8 part of the rubber internal mold release agent, the rigidity of rubber molecule crosslinking bonds is improved, excellent mold stripping capability is provided, and high yield efficiency is achieved. By using 0.2 parts of brightening agent, the ageing-resistant protection ability of rubber is increased.
TABLE 3 Table 3
| Test number | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Rubber internal release agent | 0 | 0.4 | 0.8 | 1.2 | 0.8 | 0.8 | 0.8 |
| Brightening agent | 0.2 | 0.2 | 0.2 | 0.2 | 0 | 0.4 | 0.8 |
| Stripping performance | Difference of difference | Slightly better | Optimum for | Optimum for | Good (good) | Good (good) | Good (good) |
| Outsole spectrophotometry | Good (good) | Good (good) | Good (good) | Good (good) | Difference of difference | Good (good) | Bright and bad |
| Outsole light conversion retention performance | Good (good) | Good (good) | Good (good) | Good (good) | Difference of difference | Good (good) | Is bad |
| Cost of | Good (good) | Good (good) | Good (good) | High height | Good (good) | High to high | Too high |
As shown in Table 3, the optimum amount of the mold release agent in rubber was 0.8 part, and the optimum amount of the brightening agent was 0.2 part. The rubber has the best comprehensive performance under the system condition.
3) Relation between plasticity, vulcanization starting point and rubber property of rubber compound
TABLE 4 Table 4
As shown in Table 4, the rubber compound has a plasticity of 0.36 to 0.40 (vulcanization starting point 3' -3'20 '), and the obtained rubber compound has the best physical properties and process properties.
3) Vulcanization temperature control conditions and sole performance
TABLE 5
As can be seen from Table 5, the optimum vulcanization conditions for the sole are: the temperature of the boiler is controlled to 180 ℃, the die closing and vulcanizing time is 4min (3.5-4.5 are all feasible), and the physical properties of the obtained sizing material are optimal.
The invention has the beneficial effects that: compared with the prior art, the invention improves the material proportion and the preparation method of the sole rubber by adopting the technical proposal, and the sole rubber with high tensile property and good wear resistance is obtained by screening, the appearance and the light-loss effect are good, and the sole acle abrasion volume is 0.22-0.25 cm 3 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, and the manufactured product has low cost and good appearance light-losing 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 light-losing type high-performance black sole rubber comprises, by mass, 60 parts of 2# standard rubber, 30 parts of butadiene rubber, 1.9 parts of sulfur, 2.0 parts of accelerator, 8 parts of vulcanization active agent, 11 parts of rubber softener, 3 parts of anti-aging agent, 0.7 part of rubber internal mold release agent, 3.5 parts of solid coumarone, 58 parts of medium super wear-resistant carbon black, 0.1 part of brightening agent and 0.3 part of homogenizing agent.
Example 2 of the present invention: the light-losing type high-performance black sole rubber comprises, by mass, 70 parts of 2# standard rubber, 40 parts of butadiene rubber, 2.1 parts of sulfur, 2.4 parts of accelerator, 9 parts of vulcanization activator, 15 parts of rubber softener, 4 parts of anti-aging agent, 0.9 part of rubber internal mold release agent, 4.5 parts of solid coumarone, 62 parts of medium super wear-resistant carbon black, 0.3 part of brightening agent and 0.5 part of homogenizing agent.
Example 3 of the present invention: the light-losing type high-performance black sole rubber comprises, by mass, 65 parts of 2# standard rubber, 35 parts of butadiene rubber, 2.0 parts of sulfur, 2.2 parts of accelerator, 8.5 parts of vulcanization activator, 13 parts of rubber softener, 3.5 parts of anti-aging agent, 0.8 part of rubber internal mold release agent, 4 parts of solid coumarone, 60 parts of medium super wear-resistant carbon black, 0.20 part of brightening agent and 0.4 part of homogenizing agent.
Example 4 of the present invention: the light-losing type high-performance black sole rubber comprises, by weight, 65 parts of 2# standard rubber, 35 parts of butadiene rubber, 2.0 parts of sulfur, 2.3 parts of accelerator, 8.0 parts of vulcanization activator, 15 parts of rubber softener, 3.2 parts of anti-aging agent, 1.0 part of rubber internal mold release agent, 4 parts of solid coumarone, 60 parts of medium super wear-resistant carbon black, 0.20 part of brightening agent and 0.5 part of homogenizing agent.
Example 5 of the present invention: the light-losing type high-performance black sole rubber comprises, by weight, 65 parts of 2# standard rubber, 35 parts of butadiene rubber, 2.0 parts of sulfur, 2.3 parts of accelerator, 9.0 parts of vulcanization activator, 14 parts of rubber softener, 3.5 parts of anti-aging agent, 1.0 part of rubber internal mold release agent, 3.5 parts of solid coumarone, 58 parts of medium super wear-resistant carbon black, 0.20 part of brightening agent and 0.3 part of homogenizing agent.
In the above examples, butadiene rubber gauge was BR9000, brightener 80# microcrystalline wax, rubber softener 5# spindle oil, and internal mold release gauge DT918.
Taking example 3 as an example, each 8.5 parts of vulcanization activator consists of 2.5 parts of stearic acid and 6.0 parts of nano zinc oxide; each 2.2 parts of accelerator consists of 0.2 parts of accelerator DM, 1.8 parts of accelerator CBS and 0.2 parts of accelerator DS; each 3.5 parts of the anti-aging agent consists of 1.5 parts of anti-aging agent 4010NA, 1.5 parts of anti-aging agent CD and 0.5 part of anti-aging agent SP-C; the medium super wear-resistant carbon black is N220 carbon black. Other embodiments are just to prepare the vulcanization activator, the accelerator and the anti-aging agent according to the above proportion.
The preparation method of the light-loss type high-performance black sole rubber comprises the following steps of:
(1) Preparing a carbon black masterbatch, namely adding 53.8% of standard 2# rubber and 60% of butadiene rubber into an internal mixer, adding a masterbatch intermediate material which is all brightening agent, all solid coumarone and all 60% of stearic acid, pressing for 0.5min, adding 88.3% of N220 carbon black, pressing for 5min, sweeping powder, pressing for 3min, sweeping powder again, adding 76.9% of rubber softener when white smoke is generated at the mouth of the internal mixer, pressing for 5min, discharging, entering 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 is smooth, cooling by water, airing, and storing for 12h to obtain the carbon black masterbatch;
(2) Preparing a rubber compound: adding the rest 2# standard rubber into an internal mixer, adding a rubber compound middle material which is all a homogenizing agent and an anti-aging agent, pressing for 0.5min, adding the rest N220 carbon black, pressing for 5min, sweeping powder, pressing for 3min, sweeping powder again, pressing for 2min when white smoke is generated at the mouth of the internal mixer, discharging, feeding into an open rubber mixing machine, pulling through 8-10 channels under the condition of a roll gap of 5-6mm, discharging sheets after the surface of the rubber compound is smooth, cooling with water, airing, and storing for 12h to obtain the rubber compound;
(3) Manufacturing a rubber compound: putting the carbon black masterbatch prepared in the step (1), the masterbatch prepared in the step (2) and the middle rubber compound into an internal mixer, wherein the middle rubber compound comprises all accelerators, all residual vulcanization active agents and all internal rubber release agents, the residual vulcanization active agents comprise residual stearic acid and all nano zinc oxide, after the mixture is subjected to pressure refining for 0.5-1 min, adding the residual rubber softening agent, after the mixture is subjected to pressure refining for 3min, discharging the mixture, immediately putting the discharged rubber compound into an open rubber mixer with a roll gap of 4-5 mm, cross-turning for 4 times, then adding all sulfur, cross-turning for 8-10 times, discharging sheets with a thickness of 4-6 mm, cooling the mixture to room temperature by adopting normal temperature water, and standing for more than 24 hours to obtain a rubber compound, and rapidly inspecting the rubber compound, wherein the quick inspection index is qualified to obtain a rubber compound finished product;
(4) The finished rubber compound is heated and evenly refined on an open rubber mill at the temperature of 40-60 ℃ and then cut into rubber blank sheets for soles with specified weight; and then the sizing material embryo piece is vulcanized for 3.5 to 4.5 minutes by mould pressing under the conditions of 156 to 165 ℃ and the vulcanization pressure of 20MPa, so as to prepare the rubber sole.
The qualification judgment standard of the rubber compound is as follows: the Wipe plasticity of the mixed rubber is 0.25-0.35, the Shore A hardness of the vulcanized rubber at 143 ℃ is 61-64 degrees, the specific gravity is 1.13 plus or minus 0.02, the vulcanization starting point at 143 ℃ is 2 '40' -3 '50';
the qualified judging standard of the sole performance is as follows: tensile strength is more than 16.5MPa, elongation at break is more than 560%, shore A hardness is 60+/-5 ℃, and Aldrich abrasion value is less than or equal to 0.25cm 3 。
And (3) sizing material embryo sheet discharge and mold exhaust control measures for manufacturing a light-loss disulfide bottom:
1) After the sizing material is hot refined, a sizing machine is used for automatically discharging a sizing blank, the sizing blank is placed for more than one day after passing through a spacer fluid, and the water is fully volatilized and dried, so that the sizing blank can be put into a bottom making link;
2) In the vulcanization manufacturing process, the mold is subjected to air discharge and pressing, and the mold is required to be loosened and air discharged for three times within 1 minute after the mold is assembled and closed, so that the air discharge process of the rubber material is completed before vulcanization shaping.
Claims (10)
1. The lost-light type high-performance black sole rubber is characterized in that: the modified rubber comprises, by mass, 60-70 parts of 2# standard rubber, 30-40 parts of butadiene rubber, 1.9-2.1 parts of sulfur, 2.0-2.4 parts of accelerator, 8-9 parts of vulcanization activator, 11-15 parts of rubber softener, 3-4 parts of anti-aging agent, 0.7-0.9 part of rubber internal mold release agent, 3.5-4.5 parts of solid coumarone, 58-62 parts of medium super wear-resistant carbon black, 0.1-0.3 part of brightening agent and 0.3-0.5 part of homogenizing agent.
2. The light-loss high-performance black sole rubber according to claim 1, wherein: the modified rubber comprises, by mass, 65 parts of a No. 2 standard rubber, 35 parts of butadiene rubber, 2.0 parts of sulfur, 2.2 parts of an accelerator, 8.5 parts of a vulcanization activator, 13 parts of a rubber softener, 3.5 parts of an anti-aging agent, 0.8 part of an internal rubber mold release agent, 4 parts of solid coumarone, 60 parts of medium super wear-resistant carbon black, 0.20 part of a brightening agent and 0.4 part of a homogenizing agent.
3. The light-loss type high-performance black sole rubber according to claim 1 or 2, wherein: butadiene rubber specification is BR9000, brightening agent is 80# microcrystalline wax, rubber softener is 5# spindle oil, and internal mold release specification is DT918.
4. The light-loss type high-performance black sole rubber according to claim 1 or 2, wherein: each 8.5 parts of vulcanization activator consists of 2.5 parts of stearic acid and 6.0 parts of nano zinc oxide.
5. The light-loss type high-performance black sole rubber according to claim 1 or 2, wherein: each 2.2 parts of accelerator consists of 0.2 parts of accelerator DM, 1.8 parts of accelerator CBS and 0.2 parts of accelerator DS.
6. The light-loss type high-performance black sole rubber according to claim 1 or 2, wherein: each 3.5 parts of the anti-aging agent consists of 1.5 parts of anti-aging agent 4010NA, 1.5 parts of anti-aging agent CD and 0.5 part of anti-aging agent SP-C.
7. The light-loss type high-performance black sole rubber according to claim 1 or 2, wherein: the medium super wear-resistant carbon black is N220 carbon black.
8. The method for preparing the light-loss type high-performance black sole rubber according to any one of claims 1 to 7, wherein the method comprises the following steps: the components are taken according to the parts by weight, and then the following steps are carried out:
(1) Preparing a carbon black masterbatch, namely adding 53.8% of standard 2# rubber and 60% of butadiene rubber into an internal mixer, adding a masterbatch intermediate material, namely all brightening agent, all solid coumarone and all 60% of stearic acid, carrying out pressure refining for 0.5min, adding 88.3% of N220 carbon black, carrying out pressure refining for 5min, sweeping powder, carrying out pressure refining for 3min, carrying out pressure refining again, adding 76.9% of rubber softener in total weight when white smoke is generated at the mouth of the internal mixer, carrying out pressure refining for 5min, discharging, entering an open type rubber mixer, pulling through 8-10 channels under the condition of 5-6mm of roll spacing, discharging sheets after the surface of the rubber material is smooth, carrying out water cooling, carrying out air drying, and storing for 12h to obtain the carbon black masterbatch;
(2) Preparing a rubber compound: adding the rest 2# standard rubber into an internal mixer, adding a rubber compound middle material which is all a homogenizing agent and an anti-aging agent, pressing for 0.5min, adding the rest N220 carbon black, pressing for 5min, sweeping powder, pressing for 3min, sweeping powder again, pressing for 2min when white smoke is generated at the mouth of the internal mixer, discharging, feeding into an open rubber mixing machine, pulling through 8-10 channels under the condition of a roll gap of 5-6mm, discharging sheets after the surface of the rubber compound is smooth, cooling with water, airing, and storing for 12h to obtain the rubber compound;
(3) Manufacturing a rubber compound: putting the carbon black masterbatch prepared in the step (1), the masterbatch prepared in the step (2) and the middle rubber compound into an internal mixer, wherein the middle rubber compound comprises all accelerators, all residual vulcanization active agents and all internal rubber release agents, the residual vulcanization active agents comprise residual stearic acid and all nano zinc oxide, after the mixture is subjected to pressure refining for 0.5-1 min, adding the residual rubber softening agent, after the mixture is subjected to pressure refining for 3min, discharging the mixture, immediately putting the discharged rubber compound into an open rubber mixer with a roll gap of 4-5 mm, cross-turning for 4 times, then adding all sulfur, cross-turning for 8-10 times, discharging sheets with a thickness of 4-6 mm, cooling the mixture to room temperature by adopting normal temperature water, and standing for more than 24 hours to obtain a rubber compound, and rapidly inspecting the rubber compound, wherein the quick inspection index is qualified to obtain a rubber compound finished product;
(4) The finished rubber compound is heated and evenly refined on an open rubber mill at the temperature of 40-60 ℃ and then cut into rubber blank sheets for soles with specified weight; and then the sizing material embryo piece is vulcanized for 3.5 to 4.5 minutes by mould pressing under the conditions of 156 to 165 ℃ and the vulcanization pressure of 20MPa, so as to prepare the rubber sole.
9. The method for preparing the light-loss type high-performance black sole rubber according to claim 8, which is characterized in that: the qualification judgment standard of the rubber compound is as follows: the Wipe plasticity of the compound rubber is 0.25-0.35, the Shore A hardness of the vulcanized rubber at 143 ℃ is 61-64 degrees, the specific gravity is 1.13 plus or minus 0.02, and the vulcanization starting point at 143 ℃ is 2 '40' -3 '50';
the qualified judging standard of the sole performance is as follows: tensile strength is more than 16.5MPa, elongation at break is more than 560%, shore A hardness is 60+/-5 ℃, and Aldrich abrasion value is less than or equal to 0.25cm 3 。
10. The method for preparing the light-loss type high-performance black sole rubber according to claim 8, which is characterized in that: and (3) sizing material embryo sheet discharge and mold exhaust control measures for manufacturing a light-loss disulfide bottom:
1) After the sizing material is hot refined, a sizing machine is used for automatically discharging a sizing blank, the sizing blank is placed for more than one day after passing through a spacer fluid, and the water is fully volatilized and dried, so that the sizing blank can be put into a bottom making link;
2) In the vulcanization manufacturing process, the mold is subjected to air discharge and pressing, and the mold is required to be loosened and air discharged for three times within 1 minute after the mold is assembled and closed, so that the air discharge process of the rubber material is completed before vulcanization shaping.
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| CN118027526A (en) * | 2024-01-19 | 2024-05-14 | 诚天科技实业(广东)有限公司 | Outdoor anti-skid wear-resistant sole and preparation method thereof |
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| CN118027526A (en) * | 2024-01-19 | 2024-05-14 | 诚天科技实业(广东)有限公司 | Outdoor anti-skid wear-resistant sole and preparation method thereof |
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