CN114874511A - Wear-resistant natural rubber flame-retardant sole rubber and preparation method thereof - Google Patents
Wear-resistant natural rubber flame-retardant sole rubber and preparation method thereof Download PDFInfo
- Publication number
- CN114874511A CN114874511A CN202210551035.9A CN202210551035A CN114874511A CN 114874511 A CN114874511 A CN 114874511A CN 202210551035 A CN202210551035 A CN 202210551035A CN 114874511 A CN114874511 A CN 114874511A
- Authority
- CN
- China
- Prior art keywords
- rubber
- parts
- flame
- retardant
- accelerator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/28—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for farming
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses wear-resistant natural rubber flame-retardant sole rubber, which comprises natural rubber, synthetic rubber, sulfur, an accelerator, a vulcanization activator, a mold release agent, carbon black, a softening agent, a composite flame retardant and an anti-aging agent. The natural rubber and the butadiene rubber are used as main materials, the N220wt is added as a reinforcing agent and a softening agent to ensure the physical properties of rubber materials, the service life of the rubber sole is ensured, and the composite flame retardant is used as a synergistic flame retardant system to provide excellent flame retardant property for the product; the aim of generating a carbon layer during combustion to adsorb molten and ignited polymers can be achieved, the fire disaster can be prevented from being transmitted by liquid drops, the defect that the conventional NR + SBR + BR mixed rubber is extremely easy to burn is overcome, the defect that chloroprene rubber is difficult to adhere is overcome, the flame retardant grade can reach UL94V-0 grade, and the self-extinguishing requirement is met in a vertical burning test.
Description
Technical Field
The invention relates to rubber and a preparation method thereof, in particular to wear-resistant natural rubber flame-retardant sole rubber and a preparation method thereof.
Background
The flame-retardant rubber shoes are conventionally used as products worn by forest protection workers, are usually used as forest fire-fighting shoes, the using environment of the flame-retardant rubber shoes is common and abnormal conditions such as rescue, fire extinguishment and the like caused by forest fires occur, under the scene of forest fire fighting, shoes and clothes worn by forest fire-fighting personnel usually can contact flame or a burning body in a short time, particularly, the forest fire-fighting shoes have more chances of contacting the burning body, and therefore the sole rubber for the forest fire-fighting shoes is required to have proper flame-retardant capability, namely, the reduction of the protective performance caused by continuous burning of the sole rubber can be prevented on the premise of having enough flame-retardant performance. Due to the particularity of the using environment of the forest fire-fighting shoes, the sole rubber has to have enough wear resistance to exert the comprehensive performance.
Generally, chloroprene rubber is used as a main material of flame-retardant sole rubber, and the flame-retardant performance of the chloroprene rubber has an outstanding protection advantage. But the chloroprene rubber has the viscoelastic property, so that the rubber material for shoes has poor process performance and low stability, the environment for forming shoes has VOC emission, does not meet the environmental protection requirement, simultaneously has high production cost, and the service life of the processed flame-retardant rubber shoes is short. Therefore, the technical development of the flame retardant materials of natural rubber is important.
With the expansion of the application field of natural rubber, forest workers have higher and higher requirements on the flame retardant performance of rubber products, and the development and application of natural rubber flame retardant products have become more and more important. Because the natural rubber has an extreme oxygen index of about 17, the natural rubber belongs to an extremely flammable material. However, the rubber sole using natural rubber and butadiene rubber as a combined system has excellent comprehensive performance, and has great practical significance in researching the flame resistance of the carbon black reinforced rubber sole.
In the process of manufacturing the rubber for flame-retardant shoes, the natural rubber is filled with the flame retardant, which is an optimal scheme, and has the advantages of easy forming and processing, low cost, firm bonding of rubber shoes and long service life. However, inorganic materials such as antimony trioxide and red phosphorus are used as flame retardants, and due to limited flame retardant capability, the inorganic materials need to be used in a formula in a large amount, which causes the problems of great reduction of rubber physical properties, formation of rubber blooming and other quality abnormalities, rubber shoes are not durable to wear, more three wastes are generated, the environment is not protected, the use value is low, and the application range is low.
Disclosure of Invention
The purpose of the invention is: the wear-resistant natural rubber flame-retardant sole rubber and the preparation method thereof have the advantages of good flame-retardant property, capability of preventing liquid drops from transferring to form secondary fire, long service life of the product and capability of overcoming the defects of the prior art.
The invention is realized by the following steps: the wear-resistant natural rubber flame-retardant sole rubber comprises, by mass, 75-80 parts of natural rubber, 20-25 parts of synthetic rubber, 1.4-1.8 parts of sulfur, 3-3.5 parts of an accelerator, 6-8 parts of a vulcanization activator, 0.4-0.6 part of a release agent, 48-52 parts of carbon black, 1-3 parts of a softener, 40-45 parts of a composite flame retardant and 1.0-1.4 parts of an anti-aging agent.
The more preferable technical scheme is that the rubber material comprises 77 parts by mass of natural rubber, 23 parts by mass of synthetic rubber, 1.6 parts by mass of sulfur, 3.3 parts by mass of an accelerator, 7 parts by mass of a vulcanization activator, 0.5 part by mass of a mold release agent, 50 parts by mass of carbon black, 2 parts by mass of a softener, 43 parts by mass of a composite flame retardant and 1.2 parts by mass of an anti-aging agent.
The synthetic rubber is butadiene rubber and has the specification of BR 9000. The softener is solid coumarone, and the type of the carbon black is N220.
Every 3.3 parts of accelerator consists of 0.5 part of accelerator BM, 0.5 part of accelerator B, 1.8 parts of accelerator CBS and 0.5 part of accelerator D.
2.5 parts of tertiary stearic acid, 4 parts of nano zinc oxide and 0.5 part of light magnesium oxide are added into every 7 parts of vulcanization activator. The anti-aging agent is anti-aging agent CD, and the release agent is rubber internal release agent LTM-A.
Every 43 parts of the composite flame retardant consists of 14 parts of decabromodiphenyl ether, 3 parts of antimony oxide, 17 parts of chlorinated paraffin (-70), 3 parts of zinc borate and 6 parts of special aluminum hydroxide.
Adding natural rubber, butadiene rubber, stearic acid of 1/2-2/3 in a vulcanization activator, carbon black and solid coumarone into an internal mixer according to the mass parts, milling the rubber for 4-5 minutes, lifting a top bolt to scrape the rubber when the current load of the rubber mixer is reduced to 220A, sending an overflowing material at the mouth of the internal mixer into an internal mixing chamber, scraping the overflowing material within 15-25 seconds, returning the top bolt to the right position within next 30 seconds, continuing milling, milling for 3.5-4 minutes after the rubber mixer is loaded, and returning the load of the rubber mixer to above 160A to discharge the material, thus obtaining masterbatch;
standing the master batch for 12 hours, adding the master batch and the mixed batch into an internal mixer, performing pressure refining for 50-65 seconds, adding the composite flame retardant, performing pressure refining for 3-5 minutes, lifting a top bolt for rubber scraping, performing pressure refining for 2 minutes, performing rubber refining for 1 minute after the load rises to 200A when the internal mixer generates a plotter sound due to rubber material friction, adding sulfur into the discharged rubber material on an open rubber refining machine, and uniformly performing turnover refining to obtain a finished product.
The rubber compound comprises an accelerator, the rest of vulcanization activator, a release agent and an anti-aging agent.
The comparison standards adopted by the invention are as follows:
one) UL94 standard
The UL94 fire rating is 94HB, 94V, 94-5V.
A) Grade 94 HB: i.e. when the test piece is ignited in a horizontal mode, 1) the thickness of the test piece is less than 3.05mm, and the burning speed is less than 76.2 mm/min; 2) the thickness of the test piece is 3.05-12.7 mm, and the burning speed is less than 38.1 mm/min; this is a 94HB level minimum requirement.
B)94V level: the test piece can reach the following standard when being vertically burnt, and can be divided into three stages of V-0, V-1 and V-2. Wherein
V-0 level: when each flame was removed, the test piece ignited no more than 10 seconds and no sparks dropped to surgical cotton 305mm from the test piece to ignite the ignition point and no residual flame for more than 30 seconds.
V-1 grade: the same as V-0, except that the test piece had to be extinguished within 30 seconds and had no residual burning after 60 seconds.
V-2 level: same as V-0 except that there are starred drops that catch fire on the dried cotton.
94V-0 level: the flame does not support combustion for 15 seconds (1000BTU) and can be automatically fried and extinguished;
94V-1 level: the flame dropped for 30 seconds (1000BTU), but no flame was generated.
94V-2 level: the flame man will drop in 30 seconds (1000BTU), and will have flame, but will not ignite cotton, will self-extinguish.
94 HB: OBTU is almost non-fire-resistant.
The flame retardant grade is gradually increased from HB, V-2, V-1 to V-0:
1) HB: the lowest flame retardant rating in the UL94 standard. Requiring a burn rate of less than 40 mm per minute for samples 3 to 13 mm thick; a sample less than 3 mm thick with a burning rate less than 70 mm per minute; or extinguished before the 100 mm mark.
2) V-2: after two 10 second burn tests on the samples, the flame extinguished within 60 seconds. There may be combustion products falling.
3) V-1: after two 10 second burn tests on the samples, the flame extinguished within 60 seconds. No combustible material can fall off.
4) V-0: after two 10 second burn tests on the samples, the flame extinguished within 30 seconds. No combustible material can fall off.
II) national standard: GB/T10707-2008 rubber combustion performance determination
1) FV-0 level: the flame combustion time after the flame is applied to each sample is less than or equal to 10 seconds; the total flame burning time after 10 flame applications for each set of 5 samples is less than or equal to 50 seconds; the sum of the second time flaming combustion time and the flameless combustion time of a single sample is less than or equal to 30 seconds; the phenomenon that the flame or flameless combustion is clearly spread to the clamp is avoided; the drips did not ignite the cotton wool.
2) FV-1 level: the flame combustion time after the flame is applied to each sample is less than or equal to 30 seconds; the total flame burning time after 10 flame applications for each set of 5 samples is less than or equal to 250 seconds; the sum of the second time flaming combustion time and the flameless combustion time of a single sample is less than or equal to 60 seconds; the phenomenon that the flame or flameless combustion is clearly spread to the clamp is avoided; the drips did not ignite the cotton wool.
3) FV-2 level: the flame combustion time after the flame is applied to each sample is less than or equal to 30 seconds; the total flame burning time after 10 flame applications for each set of 5 samples is less than or equal to 250 seconds; the sum of the second time flaming combustion time and the flameless combustion time of the single sample is less than or equal to 60 seconds; the phenomenon that the flame or flameless combustion is clearly spread to the clamp is avoided; the drips did not ignite the cotton wool.
The ingredients are combined with each other, so that the ingredients have positive effects on the product performance, and the method comprises the following steps:
1. wear resistance: the high-weight N220 carbon black filled NR/BR combined system is matched with solid coumarone and dibutyl phthalate to improve the elongation of vulcanized rubber, improve the wear resistance of the vulcanized rubber and greatly prolong the service life of products (Table 1).
TABLE 1
As can be seen from Table 1, 77 parts of 2# standard rubber, 23 parts of butadiene rubber, 50 parts of N220 carbon black and 2 parts of solid coumarone realize the optimal physical and mechanical properties of vulcanized rubber, good processing properties and good wear resistance (0.73 cm of Akron wear) 3 1.61km), the comprehensive performance is best, the service life is longest, and the flame resistance meets the requirements of UL94V 0.
2. Optimizing the system ratio of the accelerator and the anti-aging agent to obtain 3.3 parts of accelerator, wherein the accelerator consists of 0.5 part of accelerator BM, 0.5 part of accelerator B, 1.8 parts of accelerator CBS and 0.5 part of accelerator D; 1.0 part of an anti-aging agent CD; 3 '10-3' 30 of the vulcanization starting point at 143 ℃ cooperatively form an optimal network structure, thereby realizing wear resistance and high elasticity.
TABLE 2 optimization of accelerators and anti-aging systems
As can be seen from Table 2, the optimum amounts of accelerator and antioxidant are: 0.5 part of accelerator BM, 0.5 part of accelerator B, 1.8 parts of accelerator CBS, 0.5 part of accelerator D and 1.2 parts of antioxidant CD.
3. And (4) matching the vulcanizing agent with the active agent.
TABLE 3 optimized sulfide dosage vs. active agent Performance
As shown in Table 3, the rubber compound using 7 parts of vulcanization activator, 2.5 parts of tertiary stearic acid, 4 parts of nano zinc oxide and 0.5 part of light magnesium oxide has good process performance safety, wear resistance and flame retardant effect.
4. Flame retardant ratio study
TABLE 4 COMPARATIVE PERFORMANCE TEST TABLE FOR FIRE-RETARDANT
The results in table 4 show that the optimal flame retardant ratio is: 14 parts of decabromodiphenyl ether, 3 parts of antimony oxide, 17 parts of chlorinated paraffin (-70), 3 parts of zinc borate and 6 parts of special aluminum hydroxide.
The physical properties of the product are obtained through a series of researches: tensile strength greater than 13.3MPaElongation at break of more than 456%, and Akron abrasion of less than 0.73cm 3 The flame retardant rating of the flame retardant reaches UL94V-0 grade at 1.61 km.
By adopting the technical scheme, compared with the prior art, the natural rubber and the butadiene rubber are used as main materials, the physical properties of rubber materials are guaranteed by adding the reinforcing agent and the softening agent, so that the product has the advantages of wear resistance, wear resistance and the like, the service life of the rubber sole is ensured, and the high-efficiency flame retardant decabromodiphenyl ether, chlorinated paraffin, zinc borate, antimony oxide and special aluminum hydroxide are used as a cooperative flame retardant system together, so that excellent flame retardant performance is provided for the product; the flame-retardant rubber can generate a carbon layer during combustion to adsorb molten and ignited polymers, can prevent liquid drops from transmitting fire, overcomes the defects of extremely easy combustion of the conventional NR + SBR + BR rubber compound and difficult adhesion of chloroprene rubber flame-retardant adhesive, has the flame-retardant grade up to UL94V-0 grade, and meets the self-extinguishing requirement in a vertical combustion test. The method is simple, low in cost and good in using effect.
Detailed Description
Example 1 of the invention: the wear-resistant natural rubber flame-retardant sole rubber comprises, by weight, 77 parts of natural rubber, 23 parts of synthetic rubber (butadiene rubber is used), 1.6 parts of sulfur, 3.3 parts of an accelerator (each 3.3 parts of the accelerator consists of 0.5 part of an accelerator BM, 1.8 parts of an accelerator CBS and 0.5 part of an accelerator D), 7 parts of a vulcanization activator (each 7 parts of the vulcanization activator consists of 2.5 parts of tertiary stearic acid, 4 parts of nano zinc oxide and 0.5 part of light magnesium oxide), 0.6 part of a release agent, 50 parts of carbon black, 2 parts of a softener (the softener is solid coumarone), 43 parts of a composite flame retardant (each 43 parts of the composite flame retardant consists of 14 parts of decabromodiphenyl ether, 3 parts of antimony oxide, 17 parts of chlorinated paraffin (-70), 3 parts of zinc borate and 6 parts of special aluminum hydroxide), and 1.2 parts of an anti-aging agent.
Adding 77 parts of natural rubber, 23 parts of butadiene rubber, 1.6 parts of stearic acid, N220 carbon black and solid coumarone into an internal mixer, milling for 4-5 minutes, lifting a top bolt to scrape rubber when the current load of the rubber mixer is reduced to 220A, sending an overflowing material at the mouth of the internal mixer into an internal mixing chamber, scraping within 15-25 seconds, returning the top bolt to the right position within next 30 seconds, continuing to mill, carrying out milling for 3.5-4 minutes after the load of the rubber mixer is lifted, returning the load of the rubber mixer to 160A for discharging, and obtaining masterbatch;
standing the master batch for 12 hours, adding the master batch and medium materials (namely an accelerator, nano zinc oxide, 0.9 part of stearic acid, light magnesium oxide, a release agent and an anti-aging agent) into an internal mixer, pressing for 50-65 seconds, adding a composite flame retardant, pressing for 3-5 minutes, lifting a top bolt to scrape the rubber, pressing for 2 minutes, when the internal of the internal mixer generates a noise due to rubber material friction, then performing rubber mixing until the load rises to 200A, then performing rubber mixing for 1 minute, discharging, adding sulfur into the discharged rubber material on an open rubber mixer, and uniformly turning to obtain a finished product.
Example 2 of the invention: the wear-resistant natural rubber flame-retardant sole rubber comprises, by weight, 75 parts of No. 2 standard rubber, 25 parts of synthetic rubber (butadiene rubber is used), 1.6 parts of sulfur, 3.3 parts of an accelerator (each 3.3 parts of the accelerator consists of 0.3 part of accelerator BM, 0.5 part of accelerator B, 1.8 parts of accelerator CBS and 0.5 part of accelerator D), 7 parts of a vulcanization activator (each 7 parts of the vulcanization activator consists of 2.5 parts of tertiary stearic acid, 4.0 parts of nano zinc oxide and 0.5 part of light magnesium oxide), 0.6 part of a release agent, 51 parts of N220 carbon black, 3 parts of a softener (the softener is solid coumarone), 43 parts of a composite flame retardant (each 43 parts of the composite flame retardant consists of 14 parts of decabromodiphenyl ether, 3 parts of antimony oxide, 17 parts of chlorinated paraffin (-70), 3 parts of zinc borate and 6 parts of special aluminum hydroxide), and 1.0 part of an anti-aging agent.
Adding 77 parts of natural rubber, 23 parts of butadiene rubber, 1.5 parts of stearic acid, N220 carbon black and solid coumarone into an internal mixer, milling for 4-5 minutes, lifting a top bolt to scrape rubber when the current load of the rubber mixer is reduced to 220A, sending an overflowing material at the mouth of the internal mixer into an internal mixing chamber, scraping within 15-25 seconds, returning the top bolt to the right position within next 30 seconds, continuing to mill, carrying out milling for 3.5-4 minutes after the load of the rubber mixer is lifted, returning the load of the rubber mixer to 160A for discharging, and obtaining masterbatch;
standing the master batch for 12 hours, adding the master batch and medium materials (the medium materials are an accelerator, nano zinc oxide, 1 part of stearic acid, light magnesium oxide, a release agent and an anti-aging agent) into an internal mixer, pressing for 50-65 seconds, adding a composite flame retardant, pressing for 3-5 minutes, lifting a top bolt to scrape rubber, pressing for 2 minutes, when the internal of the internal mixer generates noise due to rubber material friction, then performing rubber mixing until the load rises to 200A, then performing rubber mixing for 1 minute, discharging, adding sulfur into the discharged rubber material on an open rubber mixer, and uniformly turning to obtain a finished product.
Example 3 of the invention: the wear-resistant natural rubber flame-retardant sole rubber comprises, by weight, 80 parts of No. 2 standard rubber, 20 parts of synthetic rubber (butadiene rubber is used), 1.6 parts of sulfur, 3.3 parts of an accelerator (each 3.3 parts of the accelerator consists of 0.5 part of accelerator BM, 0.5 part of accelerator B, 1.8 parts of accelerator CBS and 0.5 part of accelerator D), 7.0 parts of a vulcanization activator (each 7 parts of the vulcanization activator consists of 2.5 parts of tertiary stearic acid, 4.0 parts of nano zinc oxide and 0.5 part of light magnesium oxide), 0.6 part of a mold release agent, 48 parts of N220 carbon black, 1 part of a softener (the softener is solid coumarone), 43 parts of a composite flame retardant (each 43 parts of the composite flame retardant consists of 14 parts of decabromodiphenyl ether, 3 parts of antimony oxide, 17 parts of chlorinated paraffin (-70), 3 parts of zinc borate and 6 parts of special aluminum hydroxide), and 1.0 part of an anti-aging agent.
Adding 77 parts of natural rubber, 23 parts of butadiene rubber, 1.6 parts of stearic acid, N220 carbon black and solid coumarone into an internal mixer, milling for 4-5 minutes, lifting a top bolt to scrape rubber when the current load of the rubber mixer is reduced to 220A, sending an overflowing material at the mouth of the internal mixer into an internal mixing chamber, scraping within 15-25 seconds, returning the top bolt to the right position within next 30 seconds, continuing to mill, carrying out milling for 3.5-4 minutes after the load of the rubber mixer is lifted, returning the load of the rubber mixer to 160A for discharging, and obtaining masterbatch;
standing the master batch for 12 hours, adding the master batch, 12 parts of natural rubber, 8 parts of butadiene rubber and a medium material into an internal mixer, performing pressure refining for 50-65 seconds, adding a composite flame retardant, performing pressure refining for 3-5 minutes, lifting a top bolt to scrape rubber, performing pressure refining for 2 minutes, performing rubber refining for 1 minute after the load rises to 200A when the internal part of the internal mixer generates a muffling sound due to rubber material friction, discharging the rubber material, adding sulfur into the discharged rubber material on an open rubber refining machine, and uniformly performing pressure refining to obtain a finished product.
Claims (10)
1. The wear-resistant natural rubber flame-retardant sole rubber is characterized in that: the flame retardant rubber comprises, by mass, 75-80 parts of natural rubber, 20-25 parts of synthetic rubber, 1.4-1.8 parts of sulfur, 3-3.5 parts of an accelerator, 6-8 parts of a vulcanization activator, 0.4-0.6 part of a release agent, 48-52 parts of carbon black, 1-3 parts of a softener, 40-45 parts of a composite flame retardant and 1.0-1.4 parts of an anti-aging agent.
2. The wear-resistant natural rubber flame-retardant sole rubber according to claim 1, wherein: the flame retardant rubber comprises, by mass, 77 parts of natural rubber, 23 parts of synthetic rubber, 1.6 parts of sulfur, 3.3 parts of an accelerator, 7 parts of a vulcanization activator, 0.5 part of a release agent, 50 parts of carbon black, 2 parts of a softener, 43 parts of a composite flame retardant and 1.2 parts of an anti-aging agent.
3. The wear-resistant natural rubber flame-retardant sole rubber according to claim 1 or 2, wherein: the natural rubber is 2# standard rubber, and the synthetic rubber is BR9000 butadiene rubber.
4. The wear-resistant natural rubber flame-retardant sole rubber according to claim 1 or 2, wherein: every 3.3 parts of accelerator consists of 0.5 part of accelerator BM, 0.5 part of accelerator B, 1.8 parts of accelerator CBS and 0.5 part of accelerator D.
5. The wear-resistant natural rubber flame-retardant sole rubber according to claim 1 or 2, wherein: 2.5 parts of tertiary stearic acid, 4 parts of nano zinc oxide and 0.5 part of light magnesium oxide are added into every 7 parts of vulcanization activator.
6. The wear-resistant natural rubber flame-retardant sole rubber according to claim 1 or 2, wherein: the softener is solid coumarone; every 43 parts of the composite flame retardant consists of 14 parts of decabromodiphenyl ether, 3 parts of antimony oxide, 17 parts of chlorinated paraffin-70, 3 parts of zinc borate and 6 parts of special aluminum hydroxide.
7. The wear-resistant natural rubber flame-retardant sole rubber according to claim 1 or 2, wherein: the anti-aging agent is anti-aging agent CD, and the release agent is rubber internal release agent LTM-A.
8. A preparation method of wear-resistant natural rubber flame-retardant sole rubber is characterized by taking the components according to the mass parts, adding stearic acid, carbon black and solid coumarone of 1/2-2/3 in natural rubber, butadiene rubber and a vulcanization activator into an internal mixer, milling for 4-5 minutes, lifting a top plug to scrape rubber when the current load of a rubber mixing machine is reduced to 220A, sending overflow materials at the mouth of the internal mixer into the internal mixing chamber, scraping within 15-25 seconds, returning the top plug to a proper position within next 30 seconds, continuing to mill, performing milling for 3.5-4 minutes after the rubber mixing machine is loaded, and raising the load of the rubber mixing machine to more than 160A to discharge, thus obtaining master batch;
standing the master batch for 12 hours, adding the master batch and the mixed batch into an internal mixer, performing pressure refining for 50-65 seconds, adding the composite flame retardant, performing pressure refining for 3-5 minutes, lifting a top bolt for rubber scraping, performing pressure refining for 2 minutes, performing rubber refining for 1 minute after the load rises to 200A when the internal mixer generates a plotter sound due to rubber material friction, adding sulfur into the discharged rubber material on an open rubber refining machine, and uniformly performing turnover refining to obtain a finished product.
9. The preparation method of the wear-resistant natural rubber flame-retardant sole rubber according to claim 9, characterized by comprising the following steps: the rubber compound comprises an accelerator, the rest of vulcanization activator, a release agent and an anti-aging agent.
10. The preparation method of the wear-resistant natural rubber flame-retardant sole rubber according to claim 8, characterized by comprising the following steps: the rapid inspection control indexes of the sizing material are as follows: the plasticity of the rubber compound is between 0.25 and 0.38, the vulcanization starting point of a press vulcanizer with 143 ℃ is 2 ' 40-3 ' 40 ', and the Shore hardness is 63 +/-5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210551035.9A CN114874511A (en) | 2022-05-18 | 2022-05-18 | Wear-resistant natural rubber flame-retardant sole rubber and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210551035.9A CN114874511A (en) | 2022-05-18 | 2022-05-18 | Wear-resistant natural rubber flame-retardant sole rubber and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114874511A true CN114874511A (en) | 2022-08-09 |
Family
ID=82677676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210551035.9A Pending CN114874511A (en) | 2022-05-18 | 2022-05-18 | Wear-resistant natural rubber flame-retardant sole rubber and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114874511A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591178A (en) * | 2019-09-27 | 2019-12-20 | 际华三五三七有限责任公司 | Wear-resistant flame-retardant sole rubber for forest fire-fighting shoes and preparation method thereof |
| CN112500615A (en) * | 2020-11-02 | 2021-03-16 | 际华三五三七有限责任公司 | Lightweight rubber flame-retardant disulfide outsole and preparation method and application thereof |
| CN113667192A (en) * | 2021-09-02 | 2021-11-19 | 际华三五三七有限责任公司 | Flame-retardant rubber sole and preparation method thereof |
-
2022
- 2022-05-18 CN CN202210551035.9A patent/CN114874511A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591178A (en) * | 2019-09-27 | 2019-12-20 | 际华三五三七有限责任公司 | Wear-resistant flame-retardant sole rubber for forest fire-fighting shoes and preparation method thereof |
| CN112500615A (en) * | 2020-11-02 | 2021-03-16 | 际华三五三七有限责任公司 | Lightweight rubber flame-retardant disulfide outsole and preparation method and application thereof |
| CN113667192A (en) * | 2021-09-02 | 2021-11-19 | 际华三五三七有限责任公司 | Flame-retardant rubber sole and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110591178A (en) | Wear-resistant flame-retardant sole rubber for forest fire-fighting shoes and preparation method thereof | |
| CN102161787B (en) | Environment-friendly flame-retardant rubber for shoe soles and preparation method thereof | |
| CN105968591B (en) | A kind of fire-retardant damping EPDM vulcanizate and preparation method thereof | |
| CN102250406B (en) | Polyethylene material with high flame resistance | |
| CN110628092A (en) | Dark green flame-retardant shoe edge rubber for forest fire-fighting shoes and preparation method thereof | |
| CN109735913B (en) | Flame-retardant composition and preparation method thereof, artificial grass filaments, artificial lawn gum and artificial lawn | |
| CN106065109B (en) | Halogen-free cable jacket rubber material and preparation method thereof | |
| CN104098809A (en) | Rubber coating and preparation method thereof | |
| CN113667192A (en) | Flame-retardant rubber sole and preparation method thereof | |
| CN103497366A (en) | Environment-friendly flame retardant rubber for soles and preparation method thereof | |
| CN114874511A (en) | Wear-resistant natural rubber flame-retardant sole rubber and preparation method thereof | |
| CN102002174B (en) | Styrene butadiene rubber (SBR) sponge composite material and preparation method thereof | |
| CN102161794A (en) | Low-smoke halogen-free flame-retardant polyethylene cable material | |
| CN112300450A (en) | Flame-retardant anti-static shoe edge rubber and preparation method thereof | |
| CN102617936A (en) | Preparation method for halogen-free flame-retardant rubber composite | |
| CN113861521B (en) | Flame-retardant shoe welt rubber compound and preparation method thereof | |
| CN110483851A (en) | Forest fire prevention and control shoes black flame-retardant shoes side rubber and preparation method thereof | |
| CN112341719A (en) | Novel safe, environment-friendly, flame-retardant and fire-resistant ethylene propylene diene monomer rubber and preparation method thereof | |
| CN115386153A (en) | PVG conveyer belt cover glue and PVG conveyer belt | |
| CN105778303A (en) | Flame retardant rubber | |
| CN108250632A (en) | A kind of high rigidity fire-resistant cable material and preparation method thereof | |
| CN104231336B (en) | A kind of antimonous oxide fire retardant glue | |
| CN104558862A (en) | Abrasion-resistant and flame-retardant rubber formula | |
| CN103788435A (en) | Low-smoke flame retardant mine cable sheath material | |
| CN1657559A (en) | Method for preparing fire-resistant anti-skid rubber plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 550025 No. 1 Qingxi Road, Huaxi District, Guizhou, Guiyang Applicant after: Jihua Shoes Industry Co.,Ltd. Address before: 550025 No. 1 Qingxi Road, Huaxi District, Guizhou, Guiyang Applicant before: Jihua 3537 Co.,Ltd. |