CN104861224A - Rubber compound for outsoles of insulated industrial rubber boots and preparation method of rubber compound - Google Patents
Rubber compound for outsoles of insulated industrial rubber boots and preparation method of rubber compound Download PDFInfo
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- CN104861224A CN104861224A CN201510259478.0A CN201510259478A CN104861224A CN 104861224 A CN104861224 A CN 104861224A CN 201510259478 A CN201510259478 A CN 201510259478A CN 104861224 A CN104861224 A CN 104861224A
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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
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- 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
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a rubber compound for outsoles of insulated industrial rubber boots. The rubber compound comprises components in parts by weight as follows: NO.2 standard rubber, butadiene rubber, C.S.R rubber, insoluble sulfur, stearic acid, activated zinc oxide, an accelerant, an anti-ageing agent, white carbon black, a Si69 silane coupling agent, a white carbon black dispersing agent, solid coumarone resin, high-wearability carbon black, pine tar and engine oil. The rubber compound for the outsoles of the insulated industrial rubber boots has excellent insulating property, all that is needed is to shape an outsole rubber piece, an insulating layer is not required to be added, the process is simple, the number of workers required for each piece production line is reduced by more than six, and the rubber compound has the characteristics of small punching shrinkage, small deformation during storage of rubber pieces, good stickiness, light weight, good wear resistance and the like.
Description
Technical field
The present invention relates to a kind of rubber unvulcanizate, particularly one insulation industrial rubber boots large end rubber unvulcanizate and preparation method thereof.
Background technology
In recent years; along with social progress, mine laborer protect the raising of requirement; the common industrial rubber boots that miner wore originally is gradually reducing; and such as insulated rubber working boot, anti-pound rubber boot, the anti-compound rubber boot piercing through rubber boot or aforementioned several function are progressively increasing; country has also put into effect relevant industry standard, obtains better labour protection to making mine laborer.Start at present the insulation industrial rubber boots generally used, most manufacturer adopt be the mode adding a layer insulating in the wear-resisting large end (being all on-insulated sizing material substantially) and sponge between the end, Ye You only a few manufacturer directly the large end, is made insulation the large end.Two kinds of methods respectively have quality, the former uses the carbon black filled large end, sizing material is very wear-resisting on-insulated, the large end, is die-cut and shaping bond properties is also better, but the operation such as many sizing material refining glue of a layer insulating, slice, die-cut, laminating, and because of insulation layer thinner (usual 2 millimeter), easily because slice impurity, bubble etc. cause insulation layer failure of insulation, and insulation layer too increases the overall weight of rubber boot, add the physical load of miner; What this patent discussed is first scheme, is namely need not add insulation layer, directly use the insulation large end to reach insulation object.This scheme has that refining glue, removing from mould are simple, the advantage of film stable insulation.The fonnulator at the usual insulation large end typically uses non-carbon black filler, due to industrial and mineral class rubber boot environment for use very severe, the large end requires very high to fastness to rubbing, flexible resistance etc., only has and uses white carbon black and other high reinforcing material as filler.In actual formulating of recipe, the industrial rubber boots class large end gel content of design is very high, usually all 50% is not less than, and in order to increase wear resistance, elastomeric and also higher by ratio, the problems such as this just brings the problem of some removing from moulds and bonding aspect, and such as die-cut contraction is large, film distortion is large, viscosity is poor.
Therefore, in order to overcome the above problems, need a kind of novel large bottom sizing of insulation industrial-mining boots, have to be out of shape when die-cut contraction is little, film is deposited little, viscosity good, and lightweight, the feature such as fastness to rubbing is good, process for producing is simple, production cost is low, saves material cost and cost of labor etc.
Summary of the invention
The insulation industrial rubber boots large end of the present invention rubber unvulcanizate, rubber unvulcanizate raw material is made up of following component by weight: mark 50 ~ 80 parts, glue, cis-1,4-polybutadiene rubber 10 ~ 30 parts, C.S.R rubber 10 ~ 20 parts, insoluble sulfur 4.6 ~ 5.6 parts, stearic acid 1.0 ~ 2.5 parts, active zinc flower 2 ~ 3 parts, promotor 2 ~ 3 parts, 2 ~ 3 parts, anti-aging agent, white carbon black 40 ~ 60 parts, Si69 silane coupling agent 0.8 ~ 1.5 part, White carbon black dispersant 1 ~ 2 part, solid coumarone resin 5 ~ 10 parts, high wear-resistant carbon black 5 ~ 10 parts, Stockholm tar 6 ~ 12 parts, 5 ~ 25 parts, machine oil for No. 2;
Further, rubber unvulcanizate raw material is made up of following component by weight: No. 2 marks 60 ~ 75 parts, glue, cis-1,4-polybutadiene rubber 15 ~ 20 parts of C.S.R rubber 10 ~ 15 parts, insoluble sulfurs 4.6 ~ 5.6 parts, stearic acid 1.0 ~ 2.5 parts, active zinc flower 2 ~ 3 parts, promotor 2 ~ 3 parts, 2 ~ 3 parts, anti-aging agent, white carbon black 45 ~ 50 parts, Si69 silane coupling agent 0.8 ~ 1.5 part, White carbon black dispersant 1 ~ 2 part, solid coumarone resin 5 ~ 10 parts, high wear-resistant carbon black 5 ~ 10 parts, Stockholm tar 6 ~ 12 parts, 10 ~ 20 parts, machine oil;
Further, rubber unvulcanizate raw material is made up of following component by weight: No. 2 marks 70 parts, glue, cis-1,4-polybutadiene rubbers 20 parts, C.S.R rubber 10 parts, insoluble sulfur 4.5 parts, stearic acid 1.5 parts, active zinc flower 2.3 parts, promotor 2.2 parts, 2.5 parts, anti-aging agent, white carbon black 50 parts, Si69 silane coupling agent 1.2 parts, White carbon black dispersant 1.2 parts, solid coumarone resin 5 parts, high wear-resistant carbon black 10 parts, Stockholm tar 6 parts, 15 parts, machine oil;
Further, described promotor is the mixture of altax, captax, vulkacit D, and the consumption of wherein said altax is greater than the consumption of captax and vulkacit D respectively;
Further, described anti-aging agent is the mixture of antioxidant 4010 and antioxidant D, and antioxidant 4010 and antioxidant D weight ratio are 1:1.5;
The present invention is open a kind of insulation industrial rubber boots rubber unvulcanizate of the large end and preparation method thereof also, comprises the following steps:
A. broken glue: press setting weight part by No. 2 mark glue broken glue on rubber breaker, drop into cis-1,4-polybutadiene rubber and preliminary mixing after mark gum softening bag roller, make film;
B. plasticate: adopting thin-pass method of plasticating that the film made is dropped into roll spacing is below 0.5mm, roller temperature is in the mill of 40 DEG C ~ 50 DEG C, discharging after thin-pass of plasticating also cools, it is that in the mill of 5mm-8mm, bag roller is plasticated and adds C.S.R rubber by weight that sizing material through cooling is dropped into roll spacing, the film after closing refining is obtained through processing treatment, then the film closed after refining being dropped into roll spacing is thin-pass of again plasticating in the mill of below 0.5mm, finally the sizing material after thin-pass of again plasticating being dropped into roll spacing is that in the mill of 5mm-8mm, bag roller is plasticated, sizing material is also broken into film by lower detection sample after sizing material is smooth, place more than 8 hours, obtained broken-(down)rubber, stand-by,
C. prepare burden: by weight promotor, active zinc flower, stearic acid, anti-aging agent, mixing are obtained compound I; By white carbon black, silane coupling agent (Si69), White carbon black dispersant mixing, obtained compound II; By weight by high wear-resistant carbon black, solid coumarone resin; Obtained compound III, stand-by;
D. mixing: in Banbury mixer, to drop into the broken-(down)rubber prepared in step b, plasticate after 30-50s and add obtained compound I and compound II successively, after pressure refining 0.5-1.5min, add compound III and load weighted Stockholm tar and machine oil again, after mixing 6-7min, discharge is in mill, sizing material is fallen stock pan three to five times, temperature reduces to 80 DEG C-95 DEG C, detects sample under after finally adding insoluble sulfur on a mill until, obtained rubber unvulcanizate;
Further, in step b, dropped in mill by No. 2 mark glue films, plasticate thin-pass 3-5 time; Film after closing refining is dropped in mill the thin-pass 3-5 time that again plasticates;
Further, in step b, the Testing index of film of plasticating is plasticity number is 0.50 ~ 0.58;
Further, in steps d, the Testing index of rubber pig is plasticity number is 0.38 ~ 0.44.
Beneficial effect of the present invention: one insulation industrial rubber boots large end rubber unvulcanizate of the present invention and preparation method thereof, by novel elastomer-chloroprene/styrol copolymer (hereinafter referred to as C.S.R rubber), carry out with natural rubber and use synergy, reduce sizing material die-cut time shrinkability and improve the bond properties of sizing material.Because C.S.R Rubber market price is cheap compared with natural rubber, therefore there is preferably cost performance.In addition, this formula employs cis-1,4-polybutadiene rubber, white carbon black, high wear-resistant carbon black and silane coupling agent (Si69) synergy to improve the wear resistance of sizing material, White carbon black dispersant improves the dispersion effect of white carbon black in sizing material, and the insoluble sulfur of high consumption adds the state of vulcanization at the end greatly; Insulation industrial rubber boots of the present invention rubber unvulcanizate of the large end, this rubber unvulcanizate itself has good insulating property, only needs the large primer sheet of removing from mould, insulation layer need not be increased, technique is simple, more than few recruitment 6 people of every bar slice line, and this rubber unvulcanizate have to be out of shape when die-cut contraction is little, film is deposited little, viscosity good, and lightweight, the feature such as fastness to rubbing is good.
Embodiment
The insulation industrial rubber boots large end rubber unvulcanizate of the present embodiment, rubber unvulcanizate raw material is made up of following component by weight: mark 50 ~ 80 parts, glue, cis-1,4-polybutadiene rubber 10 ~ 30 parts, C.S.R rubber 10 ~ 20 parts, insoluble sulfur 4.6 ~ 5.6 parts, stearic acid 1.0 ~ 2.5 parts, active zinc flower 2 ~ 3 parts, promotor 2 ~ 3 parts, 2 ~ 3 parts, anti-aging agent, white carbon black 40 ~ 60 parts, Si69 silane coupling agent 0.8 ~ 1.5 part, White carbon black dispersant 1 ~ 2 part, solid coumarone resin 5 ~ 10 parts, high wear-resistant carbon black 5 ~ 10 parts, Stockholm tar 6 ~ 12 parts, 5 ~ 25 parts, machine oil for No. 2.
In the present embodiment, rubber unvulcanizate raw material is made up of following component by weight: No. 2 marks 60 ~ 75 parts, glue, cis-1,4-polybutadiene rubber 15 ~ 20 parts of C.S.R rubber 10 ~ 15 parts, insoluble sulfurs 4.6 ~ 5.6 parts, stearic acid 1.0 ~ 2.5 parts, active zinc flower 2 ~ 3 parts, promotor 2 ~ 3 parts, 2 ~ 3 parts, anti-aging agent, white carbon black 45 ~ 50 parts, Si69 silane coupling agent 0.8 ~ 1.5 part, White carbon black dispersant 1 ~ 2 part, solid coumarone resin 5 ~ 10 parts, high wear-resistant carbon black 5 ~ 10 parts, Stockholm tar 6 ~ 12 parts, 10 ~ 20 parts, machine oil.
In the present embodiment, rubber unvulcanizate raw material is made up of following component by weight: No. 2 marks 70 parts, glue, cis-1,4-polybutadiene rubbers 20 parts, C.S.R rubber 10 parts, insoluble sulfur 4.5 parts, stearic acid 1.5 parts, active zinc flower 2.3 parts, promotor 2.2 parts, 2.5 parts, anti-aging agent, white carbon black 50 parts, Si69 silane coupling agent 1.2 parts, White carbon black dispersant 1.2 parts, solid coumarone resin 5 parts, high wear-resistant carbon black 10 parts, Stockholm tar 6 parts, 15 parts, machine oil.
In the present embodiment, described promotor is the mixture of altax, captax, vulkacit D, and the consumption of wherein said altax is greater than the consumption of captax and vulkacit D respectively.
In the present embodiment, described anti-aging agent is the mixture of antioxidant 4010 and antioxidant D, and antioxidant 4010 and antioxidant D weight ratio are 1:1.5.
The present invention is open a kind of insulation industrial rubber boots rubber unvulcanizate of the large end and preparation method thereof also, comprises the following steps:
A. broken glue: press setting weight part by No. 2 mark glue broken glue on rubber breaker, drop into cis-1,4-polybutadiene rubber and preliminary mixing after mark gum softening bag roller, make film;
B. plasticate: adopting thin-pass method of plasticating that the film made is dropped into roll spacing is below 0.5mm, roller temperature is in the mill of 40 DEG C ~ 50 DEG C, discharging after thin-pass of plasticating also cools, it is that in the mill of 5mm-8mm, bag roller is plasticated and adds C.S.R rubber by weight that sizing material through cooling is dropped into roll spacing, the film after closing refining is obtained through processing treatment, then the film closed after refining being dropped into roll spacing is thin-pass of again plasticating in the mill of below 0.5mm, finally the sizing material after thin-pass of again plasticating being dropped into roll spacing is that in the mill of 5mm-8mm, bag roller is plasticated, sizing material is also broken into film by lower detection sample after sizing material is smooth, place more than 8 hours, obtained broken-(down)rubber, stand-by,
C. prepare burden: by weight promotor, active zinc flower, stearic acid, anti-aging agent, mixing are obtained compound I; By white carbon black, silane coupling agent (Si69), White carbon black dispersant mixing, obtained compound II; By weight by high wear-resistant carbon black, solid coumarone resin; Obtained compound III, stand-by;
D. mixing: in Banbury mixer, to drop into the broken-(down)rubber prepared in step b, plasticate after 30-50s and add obtained compound I and compound II successively, after pressure refining 0.5-1.5min, add compound III and load weighted Stockholm tar and machine oil again, after mixing 6-7min, discharge is in mill, sizing material is fallen stock pan three to five times, temperature reduces to 80 DEG C-95 DEG C, detects sample under after finally adding insoluble sulfur on a mill until, obtained rubber unvulcanizate.
In the present embodiment, in step b, dropped in mill by No. 2 mark glue films, plasticate thin-pass 3-5 time; Film after closing refining is dropped in mill the thin-pass 3-5 time that again plasticates.
In the present embodiment, in step b, the Testing index of film of plasticating is plasticity number is 0.50 ~ 0.58;
In the present embodiment, in steps d, the Testing index of rubber pig is plasticity number is 0.38 ~ 0.44.
Embodiment one
In the present embodiment, rubber unvulcanizate raw material comprises following component by weight: No. 2 marks 65 parts, glue, cis-1,4-polybutadiene rubbers 25 parts, C.S.R rubber 10 parts, insoluble sulfur 5.2 parts, stearic acid 1.5 parts, active zinc flower 2.3 parts, promotor 2.8 parts, 2.5 parts, anti-aging agent, white carbon black 50 parts, silane coupling agent (Si69) 1.2 parts, White carbon black dispersant 1.2 parts, solid coumarone resin 5 parts, high wear-resistant carbon black 5 parts, Stockholm tar 6 parts, 15 parts, machine oil;
In the present embodiment, described promotor is the mixture of altax, captax, vulkacit D, and the consumption of wherein said altax is 1.5, and captax consumption is 0.5, and the consumption of vulkacit D is 0.8;
In the present embodiment, described anti-aging agent is the mixture of antioxidant 4010 and antioxidant D, and antioxidant 4010 consumption is 1 part, and antioxidant D consumption is 1.5 parts.
In the present embodiment, a kind of insulation industrial rubber boots rubber unvulcanizate of the large end and preparation method thereof, comprises the following steps:
A. broken glue: by weight by No. 2 mark glue broken glue on rubber breaker, drops into cis-butadiene cement and preliminary mixing after mark gum softening bag roller, makes film;
B. plasticate: adopting thin-pass method of plasticating that the film made is dropped into roll spacing is below 0.5mm, roller temperature is in the mill of 40 DEG C ~ 50 DEG C, discharging after thin-pass of plasticating also cools, it is that in the mill of 5mm-8mm, bag roller is plasticated and adds C.S.R rubber by weight that sizing material through cooling is dropped into roll spacing, the film after closing refining is obtained through processing treatment, then the film closed after refining being dropped into roll spacing is thin-pass of again plasticating in the mill of below 0.5mm, finally the sizing material after thin-pass of again plasticating being dropped into roll spacing is that in the mill of 5mm-8mm, bag roller is plasticated, sizing material is also broken into film by lower detection sample after sizing material is smooth, place more than 8 hours, obtained broken-(down)rubber, plasticate after testing plasticity number 0.50 ~ 0.58 time be qualified, stand-by,
C. prepare burden: by weight by promotor, active zinc flower, stearic acid, anti-aging agent, mixing, obtained compound I; By white carbon black, silane coupling agent (Si69), White carbon black dispersant mixing, obtained compound II; By weight by high wear-resistant carbon black, solid coumarone resin; Obtained compound III, stand-by;
D. mixing: in Banbury mixer, to drop into the broken-(down)rubber prepared in step b, plasticate after 30-50s and add obtained compound I and compound II successively, after pressure refining 0.5-1.5min, add compound III and load weighted Stockholm tar and machine oil again, after mixing 6-7min, discharge is in mill, sizing material is fallen stock pan three to five times, temperature reduces to 80 DEG C-95 DEG C, detects sample under after finally adding insoluble sulfur on a mill until, obtained rubber unvulcanizate; After testing mixing plasticity number 0.38 ~ 0.44 time be qualified, stand-by;
In the present embodiment, in step b, dropped in mill by No. 2 mark glue films, plasticate thin-pass 3-5 time; Film after closing refining is dropped in mill the thin-pass 3-5 time that again plasticates, is preferred thin-pass number of times, also can adopts other number of times, as long as the plasticity number index of plasticating that can reach regulation all can.
Detect the obtained rubber unvulcanizate correlated performance of the present embodiment, parameter, its result is:
Time of scorch (142 DEG C ± 1 DEG C, without rotor vulkameter): 2 points 15 seconds;
6KV insulation test (trial voltage 6KV, time length: 1min):
Test-results: leakage current: 0.78Ma, without puncturing.
Note: insulation test is pressed GB12011 standard test methods and performed.
Wear resisting property (Akron abrasion, Cm
3/ 1.61Km), 0.41
As can be seen from These parameters, the time of scorch of this glue stuff compounding is proper; Sizing material insulation effect is better, and wear resistance is good.
By carrying out slice test to this glue stuff compounding, die-cut shrinking percentage of the large end is less, and tack is good. to the insulation industrial-mining boots made 20 pairs, finished product stable insulation, wear resistance is better, enters mine and tries on, does not occur that the break end, decorative pattern of the large end is polished in three months.In above-described embodiment, the material weight of each component weighs by formula rate according to the model of processing units and size, is finally as the criterion can reach experiment purpose of the present invention.
Embodiment two
In the present embodiment, rubber unvulcanizate raw material comprises following component by weight: No. 2 marks 70 parts, glue, cis-1,4-polybutadiene rubbers 20 parts, C.S.R rubber 10 parts, insoluble sulfur 5.4 parts, stearic acid 1.5 parts, active zinc flower 2.3 parts, promotor 2.9 parts, 2.5 parts, anti-aging agent, white carbon black 50 parts, silane coupling agent (Si69) 1.2 parts, White carbon black dispersant 1.2 parts, solid coumarone resin 5 parts, high wear-resistant carbon black 5 parts, Stockholm tar 6 parts, 15 parts, machine oil;
In the present embodiment, described promotor is the mixture of altax, captax, vulkacit D, and the consumption of wherein said altax is 1.5, and captax consumption is 0.6, and the consumption of vulkacit D is 0.8;
In the present embodiment, described anti-aging agent is the mixture of antioxidant 4010 and antioxidant D, and antioxidant 4010 consumption is 1 part, and antioxidant D consumption is 1.5 parts.
In the present embodiment, a kind of insulation industrial rubber boots rubber unvulcanizate of the large end and preparation method thereof, comprises the following steps:
A. broken glue: by weight by No. 2 mark glue broken glue on rubber breaker, drops into cis-butadiene cement and preliminary mixing after mark gum softening bag roller, makes film;
B. plasticate: adopting thin-pass method of plasticating that the film made is dropped into roll spacing is below 0.5mm, roller temperature is in the mill of 40 DEG C ~ 50 DEG C, discharging after thin-pass of plasticating also cools, it is that in the mill of 5mm-8mm, bag roller is plasticated and adds C.S.R rubber by weight that sizing material through cooling is dropped into roll spacing, the film after closing refining is obtained through processing treatment, then the film closed after refining being dropped into roll spacing is thin-pass of again plasticating in the mill of below 0.5mm, finally the sizing material after thin-pass of again plasticating being dropped into roll spacing is that in the mill of 5mm-8mm, bag roller is plasticated, sizing material is also broken into film by lower detection sample after sizing material is smooth, place more than 8 hours, obtained broken-(down)rubber, plasticate after testing plasticity number 0.50 ~ 0.58 time be qualified, stand-by,
C. prepare burden: by weight by promotor, active zinc flower, stearic acid, anti-aging agent, mixing, obtained compound I; By white carbon black, silane coupling agent (Si69), White carbon black dispersant mixing, obtained compound II; By weight by high wear-resistant carbon black, solid coumarone resin; Obtained compound III, stand-by;
D. mixing: in Banbury mixer, to drop into the broken-(down)rubber prepared in step b, plasticate after 30-50s and add obtained compound I and compound II successively, after pressure refining 0.5-1.5min, add compound III and load weighted Stockholm tar and machine oil again, after mixing 6-7min, discharge is in mill, sizing material is fallen stock pan three to five times, temperature reduces to 80 DEG C-95 DEG C, detects sample under after finally adding insoluble sulfur on a mill until, obtained rubber unvulcanizate; After testing mixing plasticity number 0.38 ~ 0.44 time be qualified, stand-by;
In the present embodiment, in step b, dropped in mill by No. 2 mark glue films, plasticate thin-pass 3-5 time; Film after closing refining is dropped in mill the thin-pass 3-5 time that again plasticates, is preferred thin-pass number of times, also can adopts other number of times, as long as the plasticity number index of plasticating that can reach regulation all can.
Detect the obtained rubber unvulcanizate correlated performance of the present embodiment, parameter, its result is:
Time of scorch (142 DEG C ± 1 DEG C, without rotor vulkameter): 2 points 17 seconds;
6KV insulation test (trial voltage 6KV, time length: 1min):
Test-results: leakage current: 0.72Ma, without puncturing.
Note: insulation test is pressed GB12011 standard test methods and performed.
Wear resisting property (Akron abrasion, Cm
3/ 1.61Km), 0.45
As can be seen from These parameters, the time of scorch of this glue stuff compounding is proper; Sizing material insulation effect is better, and wear resistance is good.
By carrying out slice test to this glue stuff compounding, die-cut shrinking percentage of the large end is less, and tack is good. to the insulation industrial-mining boots made 20 pairs, finished product stable insulation, wear resistance is better, enters mine and tries on, does not occur that the break end, decorative pattern of the large end is polished in three months.In above-described embodiment, the material weight of each component weighs by formula rate according to the model of processing units and size, is finally as the criterion can reach experiment purpose of the present invention.
Embodiment three
In the present embodiment, rubber unvulcanizate raw material comprises following component by weight: No. 2 marks 75 parts, glue, cis-1,4-polybutadiene rubbers 15 parts, C.S.R rubber 10 parts, insoluble sulfur 5.3 parts, stearic acid 1.5 parts, active zinc flower 2.3 parts, promotor 3.0 parts, 2.5 parts, anti-aging agent, white carbon black 50 parts, silane coupling agent (Si69) 1.2 parts, White carbon black dispersant 1.2 parts, solid coumarone resin 5 parts, high wear-resistant carbon black 5 parts, Stockholm tar 6 parts, 15 parts, machine oil;
In the present embodiment, described promotor is the mixture of altax, captax, vulkacit D, and the consumption of wherein said altax is 1.5, and captax consumption is 0.5, and the consumption of vulkacit D is 1.0;
In the present embodiment, described anti-aging agent is the mixture of antioxidant 4010 and antioxidant D, and antioxidant 4010 consumption is 1 part, and antioxidant D consumption is 1.5 parts.
In the present embodiment, a kind of insulation industrial rubber boots rubber unvulcanizate of the large end and preparation method thereof, comprises the following steps:
A. broken glue: by weight by No. 2 mark glue broken glue on rubber breaker, drops into cis-butadiene cement and preliminary mixing after mark gum softening bag roller, makes film;
B. plasticate: adopting thin-pass method of plasticating that the film made is dropped into roll spacing is below 0.5mm, roller temperature is in the mill of 40 DEG C ~ 50 DEG C, discharging after thin-pass of plasticating also cools, it is that in the mill of 5mm-8mm, bag roller is plasticated and adds C.S.R rubber by weight that sizing material through cooling is dropped into roll spacing, the film after closing refining is obtained through processing treatment, then the film closed after refining being dropped into roll spacing is thin-pass of again plasticating in the mill of below 0.5mm, finally the sizing material after thin-pass of again plasticating being dropped into roll spacing is that in the mill of 5mm-8mm, bag roller is plasticated, sizing material is also broken into film by lower detection sample after sizing material is smooth, place more than 8 hours, obtained broken-(down)rubber, plasticate after testing plasticity number 0.50 ~ 0.58 time be qualified, stand-by,
C. prepare burden: by weight by promotor, active zinc flower, stearic acid, anti-aging agent, mixing, obtained compound I; By white carbon black, silane coupling agent (Si69), White carbon black dispersant mixing, obtained compound II; By weight by high wear-resistant carbon black, solid coumarone resin; Obtained compound III, stand-by;
D. mixing: in Banbury mixer, to drop into the broken-(down)rubber prepared in step b, plasticate after 30-50s and add obtained compound I and compound II successively, after pressure refining 0.5-1.5min, add compound III and load weighted Stockholm tar and machine oil again, after mixing 6-7min, discharge is in mill, sizing material is fallen stock pan three to five times, temperature reduces to 80 DEG C-95 DEG C, detects sample under after finally adding insoluble sulfur on a mill until, obtained rubber unvulcanizate; After testing mixing plasticity number 0.38 ~ 0.44 time be qualified, stand-by;
In the present embodiment, in step b, dropped in mill by No. 2 mark glue films, plasticate thin-pass 3-5 time; Film after closing refining is dropped in mill the thin-pass 3-5 time that again plasticates, is preferred thin-pass number of times, also can adopts other number of times, as long as the plasticity number index of plasticating that can reach regulation all can.
Detect the obtained rubber unvulcanizate correlated performance of the present embodiment, parameter, its result is:
Time of scorch (142 DEG C ± 1 DEG C, without rotor vulkameter): 2 points 11 seconds;
6KV insulation test (trial voltage 6KV, time length: 1min):
Test-results: leakage current: 0.78Ma, without puncturing.
Note: insulation test is pressed GB12011 standard test methods and performed.
Wear resisting property (Akron abrasion, Cm
3/ 1.61Km), 0.47
As can be seen from These parameters, the time of scorch of this glue stuff compounding is proper; Sizing material insulation effect is better, and wear resistance is good.
By carrying out slice test to this glue stuff compounding, die-cut shrinking percentage of the large end is less, and tack is good. to the insulation industrial-mining boots made 20 pairs, finished product stable insulation, wear resistance is better, enters mine and tries on, does not occur that the break end, decorative pattern of the large end is polished in three months.In above-described embodiment, the material weight of each component weighs by formula rate according to the model of processing units and size, is finally as the criterion can reach experiment purpose of the present invention.
Embodiment four
In the present embodiment, rubber unvulcanizate raw material comprises following component by weight: No. 2 marks 65 parts, glue, cis-1,4-polybutadiene rubbers 25 parts, C.S.R rubber 10 parts, insoluble sulfur 5.2 parts, stearic acid 1.5 parts, active zinc flower 2.3 parts, promotor 2.8 parts, 2.5 parts, anti-aging agent, white carbon black 45 parts, silane coupling agent (Si69) 1.2 parts, White carbon black dispersant 1.2 parts, solid coumarone resin 5 parts, high wear-resistant carbon black 5 parts, Stockholm tar 6 parts, 12 parts, machine oil;
In the present embodiment, described promotor is the mixture of altax, captax, vulkacit D, and the consumption of wherein said altax is 1.5, and captax consumption is 0.5, and the consumption of vulkacit D is 0.8;
In the present embodiment, described anti-aging agent is the mixture of antioxidant 4010 and antioxidant D, and antioxidant 4010 consumption is 1 part, and antioxidant D consumption is 1.5 parts.
In the present embodiment, a kind of insulation industrial rubber boots rubber unvulcanizate of the large end and preparation method thereof, comprises the following steps:
A. broken glue: by weight by No. 2 mark glue broken glue on rubber breaker, drops into cis-butadiene cement and preliminary mixing after mark gum softening bag roller, makes film;
B. plasticate: adopting thin-pass method of plasticating that the film made is dropped into roll spacing is below 0.5mm, roller temperature is in the mill of 40 DEG C ~ 50 DEG C, discharging after thin-pass of plasticating also cools, it is that in the mill of 5mm-8mm, bag roller is plasticated and adds C.S.R rubber by weight that sizing material through cooling is dropped into roll spacing, the film after closing refining is obtained through processing treatment, then the film closed after refining being dropped into roll spacing is thin-pass of again plasticating in the mill of below 0.5mm, finally the sizing material after thin-pass of again plasticating being dropped into roll spacing is that in the mill of 5mm-8mm, bag roller is plasticated, sizing material is also broken into film by lower detection sample after sizing material is smooth, place more than 8 hours, obtained broken-(down)rubber, plasticate after testing plasticity number 0.50 ~ 0.58 time be qualified, stand-by,
C. prepare burden: by weight by promotor, active zinc flower, stearic acid, anti-aging agent, mixing, obtained compound I; By white carbon black, silane coupling agent (Si69), White carbon black dispersant mixing, obtained compound II; By weight by high wear-resistant carbon black, solid coumarone resin; Obtained compound III, stand-by;
D. mixing: in Banbury mixer, to drop into the broken-(down)rubber prepared in step b, plasticate after 30-50s and add obtained compound I and compound II successively, after pressure refining 0.5-1.5min, add compound III and load weighted Stockholm tar and machine oil again, after mixing 6-7min, discharge is in mill, sizing material is fallen stock pan three to five times, temperature reduces to 80 DEG C-95 DEG C, detects sample under after finally adding insoluble sulfur on a mill until, obtained rubber unvulcanizate; After testing mixing plasticity number 0.38 ~ 0.44 time be qualified, stand-by;
In the present embodiment, in step b, dropped in mill by No. 2 mark glue films, plasticate thin-pass 3-5 time; Film after closing refining is dropped in mill the thin-pass 3-5 time that again plasticates, is preferred thin-pass number of times, also can adopts other number of times, as long as the plasticity number index of plasticating that can reach regulation all can.
Detect the obtained rubber unvulcanizate correlated performance of the present embodiment, parameter, its result is:
Time of scorch (142 DEG C ± 1 DEG C, without rotor vulkameter): 2 points 17 seconds;
6KV insulation test (trial voltage 6KV, time length: 1min):
Test-results: leakage current: 0.78Ma, without puncturing.
Note: insulation test is pressed GB12011 standard test methods and performed.
Wear resisting property (Akron abrasion, Cm
3/ 1.61Km), 0.42
As can be seen from These parameters, the time of scorch of this glue stuff compounding is proper; Sizing material insulation effect is better, and wear resistance is good.
By carrying out slice test to this glue stuff compounding, die-cut shrinking percentage of the large end is less, and tack is good. to the insulation industrial-mining boots made 20 pairs, finished product stable insulation, wear resistance is better, enters mine and tries on, does not occur that the break end, decorative pattern of the large end is polished in three months.In above-described embodiment, the material weight of each component weighs by formula rate according to the model of processing units and size, is finally as the criterion can reach experiment purpose of the present invention.
Embodiment five
In the present embodiment, rubber unvulcanizate raw material comprises following component by weight: No. 2 marks 70 parts, glue, cis-1,4-polybutadiene rubbers 20 parts, C.S.R rubber 10 parts, insoluble sulfur 5.2 parts, stearic acid 1.5 parts, active zinc flower 2.3 parts, promotor 2.8 parts, 2.5 parts, anti-aging agent, white carbon black 45 parts, silane coupling agent (Si69) 1.2 parts, White carbon black dispersant 1.2 parts, solid coumarone resin 5 parts, high wear-resistant carbon black 5 parts, Stockholm tar 6 parts, 12 parts, machine oil;
In the present embodiment, described promotor is the mixture of altax, captax, vulkacit D, and the consumption of wherein said altax is 1.5, and captax consumption is 0.5, and the consumption of vulkacit D is 0.8;
In the present embodiment, described anti-aging agent is the mixture of antioxidant 4010 and antioxidant D, and antioxidant 4010 consumption is 1 part, and antioxidant D consumption is 1.5 parts.
In the present embodiment, a kind of insulation industrial rubber boots rubber unvulcanizate of the large end and preparation method thereof, comprises the following steps:
A. broken glue: by weight by No. 2 mark glue broken glue on rubber breaker, drops into cis-butadiene cement and preliminary mixing after mark gum softening bag roller, makes film;
B. plasticate: adopting thin-pass method of plasticating that the film made is dropped into roll spacing is below 0.5mm, roller temperature is in the mill of 40 DEG C ~ 50 DEG C, discharging after thin-pass of plasticating also cools, it is that in the mill of 5mm-8mm, bag roller is plasticated and adds C.S.R rubber by weight that sizing material through cooling is dropped into roll spacing, the film after closing refining is obtained through processing treatment, then the film closed after refining being dropped into roll spacing is thin-pass of again plasticating in the mill of below 0.5mm, finally the sizing material after thin-pass of again plasticating being dropped into roll spacing is that in the mill of 5mm-8mm, bag roller is plasticated, sizing material is also broken into film by lower detection sample after sizing material is smooth, place more than 8 hours, obtained broken-(down)rubber, plasticate after testing plasticity number 0.50 ~ 0.58 time be qualified, stand-by,
C. prepare burden: by weight by promotor, active zinc flower, stearic acid, anti-aging agent, mixing, obtained compound I; By white carbon black, silane coupling agent (Si69), White carbon black dispersant mixing, obtained compound II; By weight by high wear-resistant carbon black, solid coumarone resin; Obtained compound III, stand-by;
D. mixing: in Banbury mixer, to drop into the broken-(down)rubber prepared in step b, plasticate after 30-50s and add obtained compound I and compound II successively, after pressure refining 0.5-1.5min, add compound III and load weighted Stockholm tar and machine oil again, after mixing 6-7min, discharge is in mill, sizing material is fallen stock pan three to five times, temperature reduces to 80 DEG C-95 DEG C, detects sample under after finally adding insoluble sulfur on a mill until, obtained rubber unvulcanizate; After testing mixing plasticity number 0.38 ~ 0.44 time be qualified, stand-by;
In the present embodiment, in step b, dropped in mill by No. 2 mark glue films, plasticate thin-pass 3-5 time; Film after closing refining is dropped in mill the thin-pass 3-5 time that again plasticates, is preferred thin-pass number of times, also can adopts other number of times, as long as the plasticity number index of plasticating that can reach regulation all can.
Detect the obtained rubber unvulcanizate correlated performance of the present embodiment, parameter, its result is:
Time of scorch (142 DEG C ± 1 DEG C, without rotor vulkameter): 2 points 12 seconds;
6KV insulation test (trial voltage 6KV, time length: 1min):
Test-results: leakage current: 0.76Ma, without puncturing.
Note: insulation test is pressed GB12011 standard test methods and performed.
Wear resisting property (Akron abrasion, Cm
3/ 1.61Km), 0.44
As can be seen from These parameters, the time of scorch of this glue stuff compounding is proper; Sizing material insulation effect is better, and wear resistance is good.
By carrying out slice test to this glue stuff compounding, die-cut shrinking percentage of the large end is less, and tack is good. to the insulation industrial-mining boots made 20 pairs, finished product stable insulation, wear resistance is better, enters mine and tries on, does not occur that the break end, decorative pattern of the large end is polished in three months.In above-described embodiment, the material weight of each component weighs by formula rate according to the model of processing units and size, is finally as the criterion can reach experiment purpose of the present invention.
Embodiment six
In the present embodiment, rubber unvulcanizate raw material comprises following component by weight: No. 2 marks 75 parts, glue, cis-1,4-polybutadiene rubbers 15 parts, C.S.R rubber 10 parts, insoluble sulfur 5.4 parts, stearic acid 1.5 parts, active zinc flower 2.3 parts, promotor 2.8 parts, 2.5 parts, anti-aging agent, white carbon black 45 parts, silane coupling agent (Si69) 1.2 parts, White carbon black dispersant 1.2 parts, solid coumarone resin 5 parts, high wear-resistant carbon black 5 parts, Stockholm tar 6 parts, 12 parts, machine oil;
In the present embodiment, described promotor is the mixture of altax, captax, vulkacit D, and the consumption of wherein said altax is 1.5, and captax consumption is 0.5, and the consumption of vulkacit D is 0.8;
In the present embodiment, described anti-aging agent is the mixture of antioxidant 4010 and antioxidant D, and antioxidant 4010 consumption is 1 part, and antioxidant D consumption is 1.5 parts.
In the present embodiment, a kind of insulation industrial rubber boots rubber unvulcanizate of the large end and preparation method thereof, comprises the following steps:
A. broken glue: by weight by No. 2 mark glue broken glue on rubber breaker, drops into cis-butadiene cement and preliminary mixing after mark gum softening bag roller, makes film;
B. plasticate: adopting thin-pass method of plasticating that the film made is dropped into roll spacing is below 0.5mm, roller temperature is in the mill of 40 DEG C ~ 50 DEG C, discharging after thin-pass of plasticating also cools, it is that in the mill of 5mm-8mm, bag roller is plasticated and adds C.S.R rubber by weight that sizing material through cooling is dropped into roll spacing, the film after closing refining is obtained through processing treatment, then the film closed after refining being dropped into roll spacing is thin-pass of again plasticating in the mill of below 0.5mm, finally the sizing material after thin-pass of again plasticating being dropped into roll spacing is that in the mill of 5mm-8mm, bag roller is plasticated, sizing material is also broken into film by lower detection sample after sizing material is smooth, place more than 8 hours, obtained broken-(down)rubber, plasticate after testing plasticity number 0.50 ~ 0.58 time be qualified, stand-by,
C. prepare burden: by weight by promotor, active zinc flower, stearic acid, anti-aging agent, mixing, obtained compound I; By white carbon black, silane coupling agent (Si69), White carbon black dispersant mixing, obtained compound II; By weight by high wear-resistant carbon black, solid coumarone resin; Obtained compound III, stand-by;
D. mixing: in Banbury mixer, to drop into the broken-(down)rubber prepared in step b, plasticate after 30-50s and add obtained compound I and compound II successively, after pressure refining 0.5-1.5min, add compound III and load weighted Stockholm tar and machine oil again, after mixing 6-7min, discharge is in mill, sizing material is fallen stock pan three to five times, temperature reduces to 80 DEG C-95 DEG C, detects sample under after finally adding insoluble sulfur on a mill until, obtained rubber unvulcanizate; After testing mixing plasticity number 0.38 ~ 0.44 time be qualified, stand-by;
In the present embodiment, in step b, dropped in mill by No. 2 mark glue films, plasticate thin-pass 3-5 time; Film after closing refining is dropped in mill the thin-pass 3-5 time that again plasticates, is preferred thin-pass number of times, also can adopts other number of times, as long as the plasticity number index of plasticating that can reach regulation all can.
Detect the obtained rubber unvulcanizate correlated performance of the present embodiment, parameter, its result is:
Time of scorch (142 DEG C ± 1 DEG C, without rotor vulkameter): 2 points 18 seconds;
6KV insulation test (trial voltage 6KV, time length: 1min):
Test-results: leakage current: 0.75Ma, without puncturing.
Note: insulation test is pressed GB12011 standard test methods and performed.
Wear resisting property (Akron abrasion, Cm
3/ 1.61Km), 0.42
As can be seen from These parameters, the time of scorch of this glue stuff compounding is proper; Sizing material insulation effect is better, and wear resistance is good.
By carrying out slice test to this glue stuff compounding, die-cut shrinking percentage of the large end is less, and tack is good. to the insulation industrial-mining boots made 20 pairs, finished product stable insulation, wear resistance is better, enters mine and tries on, does not occur that the break end, decorative pattern of the large end is polished in three months.In above-described embodiment, the material weight of each component weighs by formula rate according to the model of processing units and size, is finally as the criterion can reach experiment purpose of the present invention.
In above-described embodiment, the plasticity number of plasticating of broken-(down)rubber adopts mensuration (parallel plate method) method of GB/T12828 rubber and rubber unvulcanizate plasticity value and disengaging value to measure, and temperature condition 70 DEG C ± 1 DEG C, warm up time is 3min.Plasticity number calculation formula is:
W (plasticity number)=(h0-h2)/(hO+h1)
H0: the original height of sample at testing laboratory's temperature, mm; H1: the height of sample after load effect 3min, mm;
H2: removing load, the height recover 3min at testing laboratory's bar temperature after, mm;
The plasticity number detection method of plasticating of the same film of plasticating of mixing plasticity number detection method of rubber unvulcanizate.
In above-described embodiment, standard rubber carrys out classification by physics and chemistry usefulness unified in the world, index, these physicochemical properties comprise foreign matter content, plasticity initial value, plasticity retention(percentage), nitrogen content, volatile content, ash oontent and color index etc. seven, wherein with taking as the leading factor property of foreign matter content index, the number according to impurity be divided into 5L, 5,10,20,5 ranks such as 50;
Altax chemical name: 2,2'-dithio-bis-benzothiazole;
Captax is the ultra fast accelerator of natural rubber, has effect of softening agent concurrently, and molecular formula is: C7H5NS2;
Vulkacit D chemical name is vulkacit D;
Adopt the C.S.R rubber produced by Shandong Qi Yuan limited rubber company, full name is chloroprene/styrol copolymer, is a kind of novel elastomer;
Antioxidant 4010 Chinese another name: N cyclohexyl N' phenyl P phenylene diamine; N-phenyl-N'-cyclohexyl Ursol D; Anti-aging agent CPPD.
Antioxidant D chemical name is N-phenyl-2-naphthylamine;
Silane coupling agent (Si69), insoluble sulfur, white carbon black, White carbon black dispersant etc. are that common commercially available business is brilliant, all can reach this recipe requirements.
In above-described embodiment, described White carbon black dispersant is the gorgeous B-52 of Qingdao Ang Ji rubber and plastic Science and Technology Ltd. White carbon black dispersant glue.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the situation in the middle of right of the present invention.
Claims (9)
1. insulate an industrial rubber boots large end rubber unvulcanizate, it is characterized in that: rubber unvulcanizate raw material is made up of following component by weight: mark 50 ~ 80 parts, glue, cis-1,4-polybutadiene rubber 10 ~ 30 parts, C.S.R rubber 10 ~ 20 parts, insoluble sulfur 4.6 ~ 5.6 parts, stearic acid 1.0 ~ 2.5 parts, active zinc flower 2 ~ 3 parts, promotor 2 ~ 3 parts, 2 ~ 3 parts, anti-aging agent, white carbon black 40 ~ 60 parts, Si69 silane coupling agent 0.8 ~ 1.5 part, White carbon black dispersant 1 ~ 2 part, solid coumarone resin 5 ~ 10 parts, high wear-resistant carbon black 5 ~ 10 parts, Stockholm tar 6 ~ 12 parts, 5 ~ 25 parts, machine oil for No. 2.
2. the insulation industrial rubber boots large end according to claim 1 rubber unvulcanizate, it is characterized in that: rubber unvulcanizate raw material is made up of following component by weight: No. 2 mark 60 ~ 75 parts, glue, cis-1,4-polybutadiene rubber 15 ~ 20 parts of C.S.R rubber 10 ~ 15 parts, insoluble sulfur 4.6 ~ 5.6 parts, stearic acid 1.0 ~ 2.5 parts, active zinc flower 2 ~ 3 parts, promotor 2 ~ 3 parts, 2 ~ 3 parts, anti-aging agent, white carbon black 45 ~ 50 parts, Si69 silane coupling agent 0.8 ~ 1.5 part, White carbon black dispersant 1 ~ 2 part, solid coumarone resin 5 ~ 10 parts, high wear-resistant carbon black 5 ~ 10 parts, Stockholm tar 6 ~ 12 parts, 10 ~ 20 parts, machine oil.
3. the insulation industrial rubber boots large end according to claim 2 rubber unvulcanizate, it is characterized in that: rubber unvulcanizate raw material is made up of following component by weight: No. 2 marks 70 parts, glue, cis-1,4-polybutadiene rubbers 20 parts, C.S.R rubber 10 parts, insoluble sulfur 4.5 parts, stearic acid 1.5 parts, active zinc flower 2.3 parts, promotor 2.2 parts, 2.5 parts, anti-aging agent, white carbon black 50 parts, Si69 silane coupling agent 1.2 parts, White carbon black dispersant 1.2 parts, solid coumarone resin 5 parts, high wear-resistant carbon black 10 parts, Stockholm tar 6 parts, 15 parts, machine oil.
4. the insulation industrial rubber boots large end rubber unvulcanizate according to the arbitrary claim of claim 1-3, it is characterized in that: described promotor is the mixture of altax, captax, vulkacit D, the consumption of wherein said altax is greater than the consumption of captax and vulkacit D respectively.
5. the insulation industrial rubber boots large end rubber unvulcanizate according to the arbitrary claim of claim 1-3, it is characterized in that: described anti-aging agent is the mixture of antioxidant 4010 and antioxidant D, antioxidant 4010 and antioxidant D weight ratio are 1:1.5.
6. insulation industrial rubber boots rubber unvulcanizate of the large end and preparation method thereof, comprises the following steps:
A. broken glue: press setting weight part by No. 2 mark glue broken glue on rubber breaker, drop into cis-1,4-polybutadiene rubber and preliminary mixing after mark gum softening bag roller, make film;
B. plasticate: adopting thin-pass method of plasticating that the film made is dropped into roll spacing is below 0.5mm, roller temperature is in the mill of 40 DEG C ~ 50 DEG C, discharging after thin-pass of plasticating also cools, it is that in the mill of 5mm-8mm, bag roller is plasticated and adds C.S.R rubber by weight that sizing material through cooling is dropped into roll spacing, the film after closing refining is obtained through processing treatment, then the film closed after refining being dropped into roll spacing is thin-pass of again plasticating in the mill of below 0.5mm, finally the sizing material after thin-pass of again plasticating being dropped into roll spacing is that in the mill of 5mm-8mm, bag roller is plasticated, sizing material is also broken into film by lower detection sample after sizing material is smooth, place more than 8 hours, obtained broken-(down)rubber, stand-by,
C. prepare burden: by weight promotor, active zinc flower, stearic acid, anti-aging agent, mixing are obtained compound I; By white carbon black, silane coupling agent (Si69), White carbon black dispersant mixing, obtained compound II; By weight by high wear-resistant carbon black, solid coumarone resin; Obtained compound III, stand-by;
D. mixing: in Banbury mixer, to drop into the broken-(down)rubber prepared in step b, plasticate after 30-50s and add obtained compound I and compound II successively, after pressure refining 0.5-1.5min, add compound III and load weighted Stockholm tar and machine oil again, after mixing 6-7min, discharge is in mill, sizing material is fallen stock pan three to five times, temperature reduces to 80 DEG C-95 DEG C, detects sample under after finally adding insoluble sulfur on a mill until, obtained rubber unvulcanizate.
7. insulation industrial rubber boots according to claim 6 rubber unvulcanizate of the large end and preparation method thereof, is characterized in that: in step b, and dropped in mill by No. 2 mark glue films, plasticate thin-pass 3-5 time; Film after closing refining is dropped in mill the thin-pass 3-5 time that again plasticates.
8. insulation industrial rubber boots according to claim 6 rubber unvulcanizate of the large end and preparation method thereof, is characterized in that: in step b, and the Testing index of film of plasticating is plasticity number is 0.50 ~ 0.58.
9. insulation industrial rubber boots according to claim 6 rubber unvulcanizate of the large end and preparation method thereof, is characterized in that: in steps d, and the Testing index of rubber pig is plasticity number is 0.38 ~ 0.44.
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| CN107296325A (en) * | 2017-08-14 | 2017-10-27 | 温州鞋革职业中等专业学校 | Luminous sole |
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| CN109593237A (en) * | 2018-10-31 | 2019-04-09 | 际华三五五皮革皮鞋有限公司 | A kind of face cleaning rubber soles material and preparation method thereof |
| CN110372932A (en) * | 2019-08-14 | 2019-10-25 | 际华三五三九制鞋有限公司 | Novel big bottom material and preparation method thereof of the special type shoe with excellent properties |
| CN114031824A (en) * | 2021-12-28 | 2022-02-11 | 际华三五三九制鞋有限公司 | Protective boot outsole sizing material for fire fighting |
| CN114230873A (en) * | 2021-12-28 | 2022-03-25 | 际华三五三九制鞋有限公司 | Safety protection boot for oil workers |
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| CN114031824A (en) * | 2021-12-28 | 2022-02-11 | 际华三五三九制鞋有限公司 | Protective boot outsole sizing material for fire fighting |
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| CN104861224B (en) | 2018-01-30 |
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