CN113683824A - High-elasticity fireproof rubber sheet, preparation method and safety shoes - Google Patents

High-elasticity fireproof rubber sheet, preparation method and safety shoes Download PDF

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Publication number
CN113683824A
CN113683824A CN202110996737.3A CN202110996737A CN113683824A CN 113683824 A CN113683824 A CN 113683824A CN 202110996737 A CN202110996737 A CN 202110996737A CN 113683824 A CN113683824 A CN 113683824A
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elasticity
rubber sheet
rubber
fireproof
parts
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明瑞星
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Hubei Kexing Shoes Co ltd
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Hubei Kexing Shoes Co ltd
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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
    • C08L11/00—Compositions of homopolymers or copolymers of chloroprene
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/10—Footwear characterised by the material made of rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K2003/026—Phosphorus
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The invention provides a high-elasticity fireproof rubber sheet, a preparation method and safety shoes, wherein the preparation method comprises the following steps: pre-plasticating a mixture comprising chloroprene rubber and a plasticizer, adding a reinforcing agent, an active agent, an abrasion-resistant agent, processing oil and silica, mixing for the first time, and cooling to obtain a first rubber material; after the first rubber material is heated, adding a flame retardant, an antistatic agent and an accelerator, performing secondary mixing, and then performing tabletting molding to obtain a second rubber material; and carrying out vulcanization mould pressing on the second rubber material, and quenching to obtain the high-elasticity fireproof rubber sheet. According to the preparation method of the high-elasticity fireproof rubber sheet, provided by the invention, the rubber sheet with high elasticity and good fireproof performance is obtained by limiting the components and the proportion of the flame retardant and the synergistic effect of other raw materials, so that when the rubber sheet is used for manufacturing a vamp material of a safety shoe, the rubber sheet has both comfort and good protective performance.

Description

High-elasticity fireproof rubber sheet, preparation method and safety shoes
Technical Field
The invention relates to the technical field of rubber, in particular to a high-elasticity fireproof rubber sheet, a preparation method and safety shoes.
Background
Safety shoes generally refer to shoes which are worn in severe working environments and have the function of protecting feet, and are widely applied to workplaces such as fire fighting, steel rolling plants, thermal power plants, mechanical manufacturing workshops and the like.
Rubber is a material commonly used in safety shoes, part of which is distributed in the form of sheets in the vamp portion of the safety shoe, and part of which serves as the sole. Although safety shoes in the existing market have anti-smashing and fireproof characteristics to a certain degree and basically meet the use requirements of factory workshops, most safety shoes are heavy and have poor wearing comfort, and users can consume more physical strength after wearing the safety shoes for a long time. One of the reasons for this is that the rubber sheets currently used as vamp materials for safety shoes have poor elasticity, are difficult to walk, and are easy to rub feet. And improve the material of sheet rubber, promote the elasticity of sheet rubber after, will make the fire behavior decline of sheet rubber, influence the protectiveness of safety shoe.
Disclosure of Invention
In view of the above, there is a need to provide a high-elasticity fireproof rubber sheet, a preparation method and safety shoes, which address at least one of the above problems.
In a first aspect, the present application provides a method for preparing a high-elasticity fireproof rubber sheet, comprising the following steps:
pre-plasticating a mixture comprising chloroprene rubber and a plasticizer, adding a reinforcing agent, an active agent, an abrasion-resistant agent, processing oil and silica, mixing for the first time, and cooling to obtain a first rubber material;
after the first rubber material is heated, adding a flame retardant, an antistatic agent and an accelerator, performing secondary mixing, and then performing tabletting molding to obtain a second rubber material;
and carrying out vulcanization mould pressing on the second rubber material, and quenching to obtain the high-elasticity fireproof rubber sheet.
In certain implementations of the first aspect, the neoprene rubber is 90 to 110 parts, the plasticizer is 16 to 20 parts, the reinforcing agent is 30 to 40 parts, the activator is 8 to 12 parts, the accelerator is 2 to 4 parts, the flame retardant is 16 to 20 parts, and the antistatic agent is 6 to 10 parts by weight.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the plasticizer is a mixture of fibers and a resin, and the ratio of the fibers to the resin is 1: 3.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the strengthening agent includes a metal salt of an unsaturated carboxylic acid.
With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the flame retardant is a modified aluminum hydroxide/red phosphorus synergistic flame retardant.
With reference to the first aspect and the aforementioned implementations, in certain implementations of the first aspect, the accelerant is a thiazole accelerant.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the temperature of the primary mixing is 100-.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the temperature of the vulcanization molding is 162-2The time of the vulcanization mould pressing is 8-10min, and the thickness of the vulcanization mould pressing is 2 mm.
In a second aspect, the present application provides a high-elasticity fireproof rubber sheet obtained by the method for preparing the high-elasticity fireproof rubber sheet described in the first aspect of the present application.
In a third aspect, the present application provides a safety shoe made from a material comprising the high elasticity fire-resistant rubber sheet described in the second aspect of the present application.
Compared with the prior art, the method has the following beneficial technical effects:
according to the preparation method of the high-elasticity fireproof rubber sheet, the components and the proportion of the flame retardant and the synergistic effect of other raw materials are specifically limited through the steps of plastication, primary mixing, hot mixing, secondary mixing, vulcanization mould pressing and the like, and compared with the rubber sheet in the prior art, the obtained high-elasticity fireproof rubber sheet has better elasticity and better fireproof performance, so that when the high-elasticity fireproof rubber sheet is used for manufacturing a vamp material of a safety shoe, the high-elasticity fireproof rubber sheet has comfortableness and good protective performance.
Additional aspects and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic flow chart of a method for preparing a high-elasticity fireproof rubber sheet according to an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Possible embodiments of the invention are given in the figures. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein by the accompanying drawings. The embodiments described by way of reference to the drawings are illustrative for the purpose of providing a more thorough understanding of the present disclosure and are not to be construed as limiting the present invention. Furthermore, if a detailed description of known technologies is not necessary for illustrating the features of the present invention, such technical details may be omitted.
It will be understood by those skilled in the relevant art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, or operations, but do not preclude the presence or addition of one or more other features, integers, steps, operations, or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.
The technical solution of the present invention and how to solve the above technical problems will be described in detail with specific examples.
In an embodiment of the first aspect of the present application, there is provided a method for preparing a high-elasticity fireproof rubber sheet, as shown in fig. 1, the method comprising the steps of:
s100: the method comprises the steps of plasticating a mixture comprising chloroprene rubber and a plasticizer in advance, adding a reinforcing agent, an active agent, an anti-wear agent, processing oil and silica, mixing for the first time, and cooling to obtain a first rubber material.
S200: and (3) after the first rubber material is heated, adding a flame retardant, an antistatic agent and an accelerator, performing secondary mixing, and performing tabletting molding to obtain a second rubber material.
S300: and carrying out vulcanization mould pressing on the second rubber material, and quenching to obtain the high-elasticity fireproof rubber sheet.
Specifically, in S100, firstly, 90-110 parts of chloroprene rubber and 16-20 parts of plasticizer are added into an open mill for pre-plastication; then, adding 30-40 parts of reinforcing agent, 8-12 parts of activating agent, 1-2 parts of wear-resisting agent, 1-2 parts of processing oil and 1-2 parts of silica into an open mill, carrying out primary mixing, and cooling to obtain a first rubber material. In the step S200, after the first rubber material is heated, 16-20 parts of flame retardant, 6-10 parts of antistatic agent and 2-4 parts of accelerator are added into an open mill, and the mixture is passed through a roll for 3-5 times, mixed by a roller, subjected to secondary mixing and then tabletted and molded to obtain a second rubber material. And S300, putting the second rubber material into a mold in vulcanization equipment, carrying out vulcanization mold pressing, and quenching to obtain the high-elasticity fireproof rubber sheet.
The equipment and main processes used in the above steps are described in detail below: the open mill belongs to common rubber mixing equipment, and has the advantages of simple and convenient operation, convenient feeding and the like compared with an internal mixer; the purpose of plastication is to degrade long-chain molecules of rubber, so that the rubber loses elasticity temporarily and the plasticity and the fluidity of the rubber are increased, thereby meeting the process requirements in the subsequent manufacturing process; mixing is a production process for mixing raw rubber and various compounding agents together through rubber mixing equipment according to a formula of rubber materials, and uniformly dispersing the various compounding agents in the raw rubber so as to obtain the rubber materials with good physical and mechanical properties; the hot refining is to turn over and preheat the cooled rubber compound on an open mill so as to soften the rubber compound and facilitate the molding operation; the thin tube is characterized in that after rubber materials pass through the roller, the rubber materials can directly fall on the receiving disc without wrapping rollers, so that the uniform dispersion of each compounding agent can be accelerated, and the mixing effect of rubber compounds is improved; roll mixing is an operation of mixing the raw rubber and various compounding agents using a roll in an open mill.
In the step S100, optionally, the plastication temperature is 70-80 ℃, the duration is 3-5min, and the chloroprene rubber under the condition has good roll wrapping performance. The quality of the roll wrapping property directly affects the speed of mixing raw materials, the degree of uniform dispersion of various compounding agents, and the like. Meanwhile, the control of the mixing temperature and time not only affects the performance of the rubber compound, but also has important influence on the efficiency of vulcanization production and the quality of products. Optionally, the temperature of the primary mixing is 100-. The mixing under the condition can ensure that the raw rubber and various compounding agents are uniformly mixed, thereby improving the physical and mechanical properties of the rubber material. After primary mixing, the discharging temperature is 140-145 ℃, discharging is carried out in the temperature range, white powder does not exist on the surface of the rubber material, and the quality of the rubber material is good. In addition, the cooling operation can be realized by using cold water at 4-6 ℃.
In the step S200, optionally, the cooking temperature is 70 ℃, the duration is 2-4min, and under the condition, the chloroprene rubber has good softness and is convenient for subsequent molding processing. Optionally, the temperature of the secondary mixing is 120-.
In step S300, the selection of the temperature, time, oil pressure and thickness of the vulcanization molding directly affects the physical properties and quality of the rubber. Optionally, the temperature of the vulcanization molding is 162 ℃ and 168 ℃, and the oil pressure of the vulcanization molding is 140 ℃ and 150kg/cm2The time of vulcanization mould pressing is 8-10min, and the thickness of vulcanization mould pressing is 2 mm. In addition, the quenching in the step is a process of quickly immersing the high-temperature rubber material subjected to vulcanization molding into a coolant at a certain temperature for cooling treatment so as to obtain the rubber material with better physical properties such as elasticity and strength and longer service life. Optionally, the coolant with a certain temperature is cold brine with a temperature of-4 to 6 ℃.
In the raw materials of the preparation method of the high-elasticity fireproof film provided by the invention, 18 parts of fire retardant can be selected. 18 parts of the flame retardant is the most stable mixture ratio prepared at present. The higher the content of the flame retardant, the better the flame retardant effect of the rubber, but the excessive flame retardant may enlarge the filling amount of the whole rubber, thereby greatly reducing other properties of the rubber, such as strength, elasticity, and the like. The selection of the components and the proportion of the flame retardant is obtained by a great amount of innovative researches of the inventor.
According to the preparation method of the high-elasticity fireproof rubber sheet, the components and the proportion of the flame retardant and the synergistic effect of other raw materials are specifically limited through the steps of plastication, primary mixing, hot mixing, secondary mixing, vulcanization mould pressing and the like, and compared with the rubber sheet in the prior art, the obtained high-elasticity fireproof rubber sheet has better elasticity and better fireproof performance, so that when the high-elasticity fireproof rubber sheet is used for manufacturing a vamp material of a safety shoe, the high-elasticity fireproof rubber sheet has comfortableness and good protective performance.
Optionally, the plasticizer is a mixture of fibers and resins, the ratio of the fibers to the resins is 1:3, the fibers are a mixture of lignin fibers and viscose fibers, and the resins can be common resins such as polyvinyl chloride resin, epoxy resin and polystyrene, and can also be a mixture of the resins. The fiber and the rubber can jointly act to form the rubber compound with a net structure, and the fiber plays a role in connecting in the rubber compound, so that the strength and the toughness of the rubber can be improved. In addition, the fiber can generate a synergistic effect with the resin, and the strength and the toughness of the rubber are further improved.
Optionally, the strengthening agent contains a metal salt of an unsaturated carboxylic acid. During the cross-linking of the rubber vulcanizate, the metal salt of unsaturated carboxylic acid is converged into finely dispersed nanoparticles (i.e., metal salt of polyunsaturated carboxylic acid), which form a network structure in the rubber, thereby providing reinforcement to the rubber and imparting high modulus, high elasticity and high elongation properties to the rubber at low strain. Optionally, the reinforcing agent is a mixture of zinc methacrylate and tert-butyl perbenzoate, and the ratio of zinc methacrylate to tert-butyl perbenzoate is 3: 1. Under the synergistic action of tert-butyl perbenzoate, zinc methacrylate not only can play a good role in enhancing rubber, but also can improve the vulcanization characteristic of rubber.
Optionally, the active agents are magnesium oxide and zinc peroxide. In the preparation method of the high-elasticity fireproof rubber sheet, magnesium oxide can be used as an active agent, a vulcanizing agent and a scorch retarder; the zinc peroxide has the functions of vulcanization activity, reinforcement and compatibilization. During feeding, magnesium oxide is firstly added, and then zinc peroxide is added, so that the scorching of the sizing material can be avoided. When the rubber material is scorched, the rubber material is locally vulcanized early, so that the surface appearance quality and the physical and mechanical properties of the rubber product are influenced, and the working load of processing equipment is increased.
Optionally, the anti-wear agent is polytetrafluoroethylene. The polytetrafluoroethylene molecules are nonpolar molecules, so that a transfer film with low shear strength is easily formed on the surface of the rubber material, the frictional wear performance of the rubber can be improved, and the anti-sticking property of the rubber can be improved. Silica is also used as a filler to improve the abrasion resistance of the rubber.
Optionally, the process oil is a paraffinic oil. The paraffin oil has the characteristics of high paraffin hydrocarbon content, low aromatic hydrocarbon content, high flash point, small volatilization and the like. During mixing, the paraffin oil has good compatibility and affinity, can reduce the consumption of mixing power, promote the uniform dispersion of various compounding agents, and effectively improve the technological properties such as elongation, rebound resilience and the like of vulcanized rubber.
Optionally, the flame retardant is a modified aluminum hydroxide/red phosphorus synergistic flame retardant. When the heating temperature of the rubber material reaches about 250 ℃, the aluminum hydroxide can generate dehydration reaction, the reaction can absorb a large amount of heat energy, and the continuous temperature rise of the rubber material can be effectively inhibited. Meanwhile, the water vapor generated by the dehydration reaction can dilute the concentration of combustible gas and oxygen generated by the combustion of the rubber, and the spread of the combustion can be inhibited. In addition, the modified aluminum hydroxide/red phosphorus synergistic flame retardant can be decomposed to generate aluminum oxide, has high catalytic activity, and can catalyze the polymer in the rubber material to perform a thermal crosslinking reaction, so that a compact carbonized film is formed on the surface of the polymer, and the carbonized film can effectively slow down the heat transfer effect during combustion, thereby playing a flame-retardant role. Moreover, the red phosphorus can promote dehydration and carbonization of the polymer material, thereby inhibiting the polymer material from generating combustible gas. Moreover, because the red phosphorus has no volatility, the red phosphorus can act as a coagulant, so that the carbonized film is further densified and agglomerated, and the outside air and heat are better isolated.
Optionally, the preparation method of the modified aluminum hydroxide/red phosphorus synergistic flame retardant comprises: hydrolyzing and diluting 8-10 parts of silane coupling agent solution and 3-5 parts of ethanol solution under the condition that the pH value is 3, stirring and preheating 16-20 parts of aluminum hydroxide/red phosphorus synergistic flame retardant at a high speed for 8-12min, then adding the silane coupling agent diluted in advance into the preheated synergistic combustion improver, and reacting at 75-85 ℃ for 40-50min to obtain the modified aluminum hydroxide/red phosphorus synergistic flame retardant.
Optionally, the accelerator is a thiazole accelerator. The thiazole accelerator belongs to an acid accelerator, has high vulcanization activity, and can enable rubber to have good aging resistance and fatigue resistance. Optionally, the thiazole accelerator is accelerator MTT (3-methyl-2-thiazolethione). The chemical structure of the accelerator MTT has a thioketone group (C ═ S), and the thioketone group (C ═ S) can react with allyl chloride of the chloroprene rubber to form a crosslinking point, so that the vulcanization performance of the chloroprene rubber is improved; and the accelerator MTT is nontoxic and environment-friendly, and can improve the safety of the whole preparation method process.
Optionally, the antistatic agent is a polyoxyethylene high molecular polymer. The polyoxyethylene high molecular polymer is a permanent antistatic agent and has the characteristics of good compatibility, no migration, easy processing, easy dispersion and the like. In the preparation process of the high-elasticity fireproof rubber sheet, the polyoxyethylene high-molecular polymer can improve the vulcanizing density, increase the vulcanizing speed and prolong the scorching time.
The embodiment of the second aspect of the present application provides a high-elasticity fireproof rubber sheet prepared by the preparation method of the high-elasticity fireproof rubber sheet described in the first aspect of the present application. Specific preparation processes can be found in the description of the first aspect of the present application.
Based on the same technical concept, the embodiment of the third aspect of the present application also provides a safety shoe, and the safety shoe is prepared by using the high-elasticity fireproof rubber sheet described in the second aspect of the present application. The high-elasticity fireproof rubber sheet manufactured by the preparation method of the high-elasticity fireproof rubber sheet provided by the first aspect of the application is applied to safety shoes, so that the safety shoes have the characteristics of good elasticity, high wearing comfort and better fireproof performance.
The invention is further illustrated by the following specific examples:
example 1
The high-elasticity fireproof rubber sheet comprises the following raw materials in parts by weight: 100 parts of chloroprene rubber, 18 parts of plasticizer, 35 parts of reinforcing agent, 10 parts of activator, 3 parts of accelerator, 18 parts of flame retardant and 8 parts of antistatic agent, wherein the preparation method comprises the following steps:
pre-plasticating the mixture comprising the chloroprene rubber and the plasticizer at the temperature of 70-80 ℃ for 2-4min, adding the reinforcing agent, the activator, the wear-resistant agent, the processing oil and the silica, mixing for one time at the temperature of 100 ℃ and 130 ℃ for 12-15min, and cooling to obtain the first rubber material.
And (3) after the first rubber material is heated, heating at 70 ℃ for 2-4min, adding a flame retardant, an antistatic agent, a vulcanizing agent and an accelerator, performing secondary mixing, tabletting and forming, wherein the secondary mixing temperature is 120-140 ℃, and the secondary mixing time is 8-10min, thus obtaining a second rubber material.
Carrying out vulcanization molding on the second rubber material, wherein the temperature of the vulcanization molding is 162-168 ℃, and the oil pressure of the vulcanization molding is 140-150kg/cm2The time of vulcanization mould pressing is 8-10min, the thickness of the vulcanization mould pressing is 2mm, and the high-elasticity fireproof rubber sheet is obtained after quenching.
Example 2
The high-elasticity fireproof rubber sheet comprises the following raw materials in parts by weight: 110 portions of chloroprene rubber, 20 portions of plasticizer, 40 portions of reinforcing agent, 12 portions of activator, 4 portions of accelerator, 20 portions of flame retardant and 10 portions of antistatic agent, and the preparation method comprises the following steps:
pre-plasticating the mixture comprising the chloroprene rubber and the plasticizer at the temperature of 70-80 ℃ for 2-4min, adding the reinforcing agent, the activator, the wear-resistant agent, the processing oil and the silica, mixing for one time at the temperature of 100 ℃ and 130 ℃ for 12-15min, and cooling to obtain the first rubber material.
And (3) after the first rubber material is heated, heating at 70 ℃ for 2-4min, adding a flame retardant, an antistatic agent, a vulcanizing agent and an accelerator, performing secondary mixing, tabletting and forming, wherein the secondary mixing temperature is 120-140 ℃, and the secondary mixing time is 8-10min, thus obtaining a second rubber material.
Carrying out vulcanization molding on the second rubber material, wherein the temperature of the vulcanization molding is 162-168 ℃, and the oil pressure of the vulcanization molding is 140-150kg/cm2The time of vulcanization mould pressing is 8-10min, the thickness of the vulcanization mould pressing is 2mm, and the high-elasticity fireproof rubber sheet is obtained after quenching.
Example 3
The high-elasticity fireproof rubber sheet comprises the following raw materials in parts by weight: 90 parts of chloroprene rubber, 16 parts of plasticizer, 30 parts of reinforcing agent, 8 parts of activator, 2 parts of accelerator, 16 parts of flame retardant and 6 parts of antistatic agent, wherein the preparation method comprises the following steps:
pre-plasticating the mixture comprising the chloroprene rubber and the plasticizer at the temperature of 70-80 ℃ for 2-4min, adding the reinforcing agent, the activator, the wear-resistant agent, the processing oil and the silica, mixing for one time at the temperature of 100 ℃ and 130 ℃ for 12-15min, and cooling to obtain the first rubber material.
And (3) after the first rubber material is heated, heating at 70 ℃ for 2-4min, adding a flame retardant, an antistatic agent, a vulcanizing agent and an accelerator, performing secondary mixing, tabletting and forming, wherein the secondary mixing temperature is 120-140 ℃, and the secondary mixing time is 8-10min, thus obtaining a second rubber material.
Carrying out vulcanization molding on the second rubber material, wherein the temperature of the vulcanization molding is 162-168 ℃, and the oil pressure of the vulcanization molding is 140-150kg/cm2The time of vulcanization mould pressing is 8-10min, the thickness of the vulcanization mould pressing is 2mm, and the high-elasticity fireproof rubber sheet is obtained after quenching.
The high elastic properties and the fire-resistant properties of the natural rubber sheets of examples 1 to 3 were counted, and the results are shown in Table 1. High elastic properties (including shore a hardness, tensile strength, elongation, elastic modulus, etc.) and fire performance: the assay was performed according to GB/T531-1992, GB/T6037-1985, HGT 3321-2012 standard and GB2407 standard, respectively.
TABLE 1
Inspection item Unit of Example 1 Example 2 Example 3 Natural rubber sheet
Shore A hardness Degree of rotation 58 56 57 45
Tensile strength Kg/cm2 132.2 128.3 129.2 95.6
Elongation percentage ％ 685.6 668.4 672.3 350
Modulus of elasticity MPa 0.1 0.4 0.3 3.0
Flame-retardant FV-0 Without fireFlame(s) Without flame Without flame With a flame
As can be seen from table 1, compared with natural rubber, the high-elasticity fireproof rubber provided in embodiments 1 to 3 of the present invention has significantly increased shore a hardness, tensile strength, and elongation, significantly reduced elastic modulus, and greatly improved elasticity, and has no flame and fireproof performance.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The preparation method of the high-elasticity fireproof rubber sheet is characterized by comprising the following steps of:
pre-plasticating a mixture comprising chloroprene rubber and a plasticizer, adding a reinforcing agent, an active agent, an abrasion-resistant agent, processing oil and silica, mixing for the first time, and cooling to obtain a first rubber material;
after the first rubber material is heated, adding a flame retardant, an antistatic agent and an accelerator, performing secondary mixing, and then performing tabletting molding to obtain a second rubber material;
and carrying out vulcanization mould pressing on the second rubber material, and quenching to obtain the high-elasticity fireproof rubber sheet.
2. The preparation method of the high-elasticity fireproof rubber sheet according to claim 1, wherein the chloroprene rubber is 90-110 parts by weight, the plasticizer is 16-20 parts by weight, the reinforcing agent is 30-40 parts by weight, the activator is 8-12 parts by weight, the accelerator is 2-4 parts by weight, the flame retardant is 16-20 parts by weight, and the antistatic agent is 6-10 parts by weight.
3. The method for preparing the high-elasticity fireproof rubber sheet according to claim 1, wherein the plasticizer is a mixture of fibers and resin, and the ratio of the fibers to the resin is 1: 3.
4. The method of claim 1, wherein the reinforcing agent comprises a metal salt of an unsaturated carboxylic acid.
5. The method for preparing the high-elasticity fireproof rubber sheet according to claim 1, wherein the flame retardant is a modified aluminum hydroxide/red phosphorus synergistic flame retardant.
6. The method for preparing a highly elastic fireproof rubber sheet according to claim 1, wherein the accelerator is a thiazole accelerator.
7. The preparation method of the high-elasticity fireproof rubber sheet as claimed in claim 1, wherein the temperature of the primary mixing is 100-130 ℃, the time of the primary mixing is 12-15min, the temperature of the secondary mixing is 120-140 ℃, and the time of the secondary mixing is 8-10 min.
8. The method for preparing a high-elasticity fireproof rubber sheet as claimed in claim 1, wherein the vulcanization molding temperature is 162 ℃ and 168 ℃, and the oil pressure of the vulcanization molding is 140 ℃ and 150kg/cm2The time of the vulcanization mould pressing is 8-10min, and the thickness of the vulcanization mould pressing is 2 mm.
9. A highly elastic flameproof rubber sheet, which is obtained by the production method of the highly elastic flameproof rubber sheet according to any of claims 1 to 8.
10. A safety shoe, characterized by comprising the highly elastic fireproof rubber sheet according to claim 9.
CN202110996737.3A 2021-08-27 2021-08-27 High-elasticity fireproof rubber sheet, preparation method and safety shoes Pending CN113683824A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533687A (en) * 1983-01-31 1985-08-06 Shin-Etsu Chemical Co., Ltd. Flame-retardant rubber composition
JPS6259649A (en) * 1985-09-10 1987-03-16 Sumitomo Electric Ind Ltd Flame retardant rubber composition
JPH05230289A (en) * 1992-02-19 1993-09-07 Bridgestone Corp Flame-retardant rubber composition
JPH06192484A (en) * 1992-12-24 1994-07-12 Bridgestone Corp Flame-retardant rubber composition
JP2005097493A (en) * 2003-09-26 2005-04-14 Bando Chem Ind Ltd Flame retardant rubber composition and transfer belt for electrophotographic apparatus using the same
JP2007023102A (en) * 2005-07-13 2007-02-01 Toyo Tire & Rubber Co Ltd Flame retardant rubber
CN105504395A (en) * 2014-09-26 2016-04-20 天津市星兴橡胶制品有限公司 Environmentally-friendly oil-resistant flame-retardant rubber shoe sole material
CN108822368A (en) * 2018-07-18 2018-11-16 北京鼎翰科技有限公司 A kind of method for preparing rubber of anti-fracture flame retardant type

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533687A (en) * 1983-01-31 1985-08-06 Shin-Etsu Chemical Co., Ltd. Flame-retardant rubber composition
JPS6259649A (en) * 1985-09-10 1987-03-16 Sumitomo Electric Ind Ltd Flame retardant rubber composition
JPH05230289A (en) * 1992-02-19 1993-09-07 Bridgestone Corp Flame-retardant rubber composition
JPH06192484A (en) * 1992-12-24 1994-07-12 Bridgestone Corp Flame-retardant rubber composition
JP2005097493A (en) * 2003-09-26 2005-04-14 Bando Chem Ind Ltd Flame retardant rubber composition and transfer belt for electrophotographic apparatus using the same
JP2007023102A (en) * 2005-07-13 2007-02-01 Toyo Tire & Rubber Co Ltd Flame retardant rubber
CN105504395A (en) * 2014-09-26 2016-04-20 天津市星兴橡胶制品有限公司 Environmentally-friendly oil-resistant flame-retardant rubber shoe sole material
CN108822368A (en) * 2018-07-18 2018-11-16 北京鼎翰科技有限公司 A kind of method for preparing rubber of anti-fracture flame retardant type

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
苄军 等: "《聚合物共混改型基础》", 31 January 2018 *

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Application publication date: 20211123