Safety rubber boots capable of preventing chemicals and static electricity

Abstract

The invention provides a safe rubber boot capable of preventing chemicals and static electricity. The chemical-resistant antistatic safe rubber boot is prepared from the following raw materials in parts by weight: 30 to 40 parts of polyurethane, 80 to 100 parts of butyl rubber, 70 to 90 parts of polyisobutene, 50 to 60 parts of polyvinyl chloride resin, 20 to 40 parts of mineral filler, 10 to 20 parts of gutta-percha, 5 to 15 parts of foaming agent, 5 to 15 parts of accelerant, 20 to 40 parts of magnesium oxide, 20 to 40 parts of stearic acid, 5 to 15 parts of filler and 10 to 20 parts of plasticizer. 10-20 parts of a thickening agent, 5-15 parts of chlorinated paraffin and 10-20 parts of a conductive agent. The safe rubber boots prepared by the invention have good antistatic performance, corrosion resistance, noise elimination performance and the like.

Description

Technical Field

[0001] The invention relates to the technical field of rubber boots, and in particular to a chemical-resistant and antistatic safety rubber boot. Background Art

[0002] Chemical-proof and anti-static safety rubber boots are a type of safety shoes specially designed to protect against chemical damage and prevent static electricity accumulation. Their main functions and features include: chemical-proof, anti-static function, anti-slip design, etc. They are particularly suitable for places where static electricity hazards and chemical hazards exist, such as petroleum, chemical, coal mining, printing, rubber, medical, purification, electronics and other production enterprises.

[0003] The rubber boots in the existing general technology usually only have certain waterproof and wear-resistant properties, etc., and ignore the integrated design of anti-static and anti-chemical hazards. Their application in some places where static electricity and chemical hazards are prone to exist is greatly restricted. In the drier winter, wearing rubber boots that are prone to static electricity also greatly affects the user's wearing experience. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a chemical-proof and anti-static safety rubber boot, which can...

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The invention discloses a chemical-proof and antistatic safety rubber boot. The components of the rubber boot include the following raw materials in parts by weight: 30-40 parts of polyurethane, 80-100 parts of butyl rubber, 70-90 parts of polyisobutylene, 50-60 parts of polyvinyl chloride resin, 20-40 parts of mineral filler, 10-20 parts of eucommia gum, 5-15 parts of foaming agent, 5-15 parts of accelerator, 20-40 parts of magnesium oxide, 20-40 parts of stearic acid, 5-15 parts of filler, 10-20 parts of plasticizer, 10-20 parts of thickener, 5-15 parts of chlorinated paraffin and 10-20 parts of conductive agent.

[0007] Preferably, the components of the rubber boots include the following raw materials in parts by weight: 35 parts of polyurethane, 90 parts of butyl rubber, 80 parts of polyisobutylene, 55 parts of polyvinyl chloride resin, 30 parts of mineral filler, 15 parts of eucommia gum, 10 parts of foaming agent, 10 parts of accelerator, 30 parts of magnesium oxide, 30 parts of stearic acid, 10 parts of filler, 15 parts of plasticizer, 15 parts of thickener, 10 parts of chlorinated paraffin and 15 parts of conductive agent.

[0008] Preferably, the preparation method of rubber boots is as follows:

[0009] S1. Weigh mineral filler, chlorinated paraffin and butyl rubber in proportion, add them into a rubber internal mixer, and mix them at a temperature of 90-100° C. for 20-30 minutes, so that the mineral filler and chlorinated paraffin produce an in-situ chemical reaction in the butyl rubber to obtain a butyl rubber / mineral filler masterbatch;

[0010] S2, weighing polyurethane, polyisobutylene, polyvinyl chloride resin, eucommia gum, foaming agent, accelerator, magnesium oxide, stearic acid, filler, plasticizer, thickener and conductive agent in proportion, putting them into an internal mixer for uniform mixing, discharging sheets and cooling;

[0011] S3, the test piece is vulcanized by a flat vulcanizing machine, cooled, and a plastic sheet is obtained;

[0012] S4, using the plastic sheet to make a rubber boots mold to make a sole and an upper, and then making the rubber boots by gluing, pressurizing and sewing.

[0013] Preferably, in step S3, the vulcanization conditions are: 140°C×10 MPa×30 min.

[0014] Preferably, the mineral filler is one or more of kaolin, diatomaceous earth, talc, graphite, carbon black, alumina powder, glass powder, asbestos powder, mica powder and quartz powder.

[0015] Preferably, the accelerator is one or more of dithiocarbamate accelerators, xanthate accelerators, thiazole accelerators, sulfonamide accelerators, aldehyde amine accelerators, guanidine accelerators, and thiourea accelerators.

[0016] Preferably, the thickener is one or more of dioctyl phthalate, dibutyl phthalate, cyclohexane oil, and petroleum resin.

[0017] Preferably, the conductive agent is one or more of graphite, carbon black, metal powder, and carbon fiber.

[0018] The beneficial effects of the present invention are:

[0019] After the mineral filler is modified by chlorinated paraffin, the mineral flakes are randomly distributed in the butyl rubber matrix in a nanometer scale, which blocks the diffusion of the liquid medium in the rubber material, thereby significantly improving the corrosion resistance of the obtained rubber material and the final rubber boots.

[0020] Graphite, carbon black, metal powder and carbon fiber are conductive agents with good conductive properties. When used as raw materials for the preparation of rubber boots, they can effectively eliminate static electricity, play a good anti-static role, and improve the safety and comfort of users wearing rubber boots.

[0021] The structure of butyl rubber changes after foaming, forming a large number of interconnected holes or closed bubbles and then generating a two-phase interface. When the incident sound wave encounters the two-phase interface, refraction and reflection will occur, changing the propagation path of the sound wave and reducing the propagation speed of the sound wave. After repeated propagation, the energy is continuously dissipated, increasing the attenuation of the sound wave and reducing the sound during the user's walking in the safety rubber boots, which is beneficial to improving the wearing experience and facilitating the use of these rubber boots in combat. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] The invention discloses a chemical-proof and antistatic safety rubber boot, which is prepared from the following raw materials in proportion: 30 parts of polyurethane, 80 parts of butyl rubber, 70 parts of polyisobutylene, 50 parts of polyvinyl chloride resin, 20 parts of kaolin, 10 parts of eucommia gum, 5 parts of foaming agent, 5 parts of dithiocarbamate accelerator, 20 parts of magnesium oxide, 20 parts of stearic acid, 5 parts of filler, 10 parts of plasticizer, 10 parts of dioctyl phthalate, 5 parts of chlorinated paraffin and 10 parts of graphite.

[0025] Wherein, the preparation method of rubber boots is as follows:

[0026] S1, weighing kaolin, chlorinated paraffin and butyl rubber in proportion, adding them into a rubber internal mixer, and mixing them at a temperature of 90° C. for 20 minutes, so that kaolin and chlorinated paraffin produce an in-situ chemical reaction in the butyl rubber to obtain a butyl rubber / kaolin masterbatch;

[0027] S2, weighing polyurethane, polyisobutylene, polyvinyl chloride resin, eucommia gum, foaming agent, dithiocarbamate accelerator, magnesium oxide, stearic acid, filler, plasticizer, dioctyl phthalate and graphite in proportion, putting them into an internal mixer for uniform mixing, discharging sheets and cooling;

[0028] S3, the test piece is vulcanized by a flat vulcanizing machine, cooled, and a plastic sheet is obtained;

[0029] Among them, the vulcanization conditions are: 140℃×10MPa×30min;

[0030] S4. The plastic sheet is made into a sole (the sole is made of modified natural rubber non-slip rubber water ripple outsole) and a shoe upper by using a rubber boots making mold, and the rubber boots (weight less than 0.98 kg) are made by gluing, pressurizing and sewing.

[0031] Example 2

[0032] A chemical-resistant and antistatic safety rubber boot is prepared from the following raw materials in proportion: 40 parts of polyurethane, 100 parts of butyl rubber, 90 parts of polyisobutylene, 60 parts of polyvinyl chloride resin, 40 parts of diatomaceous earth, 20 parts of eucommia gum, 15 parts of foaming agent, 15 parts of xanthate accelerator, 40 parts of magnesium oxide, 40 parts of stearic acid, 15 parts of filler, 20 parts of plasticizer, 20 parts of dibutyl ester, 15 parts of chlorinated paraffin and 20 parts of carbon black.

[0033] Wherein, the preparation method of rubber boots is as follows:

[0034] S1, weighing diatomaceous earth, chlorinated paraffin and butyl rubber in proportion, adding them into a rubber internal mixer, and mixing them at a temperature of 100° C. for 30 minutes, so that the diatomaceous earth and chlorinated paraffin produce an in-situ chemical reaction in the butyl rubber to obtain a butyl rubber / diatomaceous earth masterbatch;

[0035] S2, weighing polyurethane, polyisobutylene, polyvinyl chloride resin, eucommia gum, foaming agent, xanthate accelerator, magnesium oxide, stearic acid, filler, plasticizer, dibutyl ester and carbon black in proportion, putting them into an internal mixer for uniform mixing, discharging sheets and cooling;

[0036] S3, the test piece is vulcanized by a flat vulcanizing machine, cooled, and a plastic sheet is obtained;

[0037] Among them, the vulcanization conditions are: 140℃×10MPa×30min;

[0038] S4. The plastic sheet is made into a sole (the sole is made of modified natural rubber non-slip rubber water ripple outsole) and a shoe upper by using a rubber boots making mold, and the rubber boots (weight less than 0.98 kg) are made by gluing, pressurizing and sewing.

[0039] Example 3

[0040] A chemical-resistant and antistatic safety rubber boot is prepared from the following raw materials in proportion: 35 parts of polyurethane, 90 parts of butyl rubber, 80 parts of polyisobutylene, 55 parts of polyvinyl chloride resin, 30 parts of graphite, 15 parts of eucommia gum, 10 parts of foaming agent, 10 parts of sulfonamide accelerator, 30 parts of magnesium oxide, 30 parts of stearic acid, 10 parts of filler, 15 parts of plasticizer, 15 parts of cyclohexane oil, 10 parts of chlorinated paraffin and 15 parts of metal powder.

[0041] Wherein, the preparation method of rubber boots is as follows:

[0042] S1. Weigh graphite, chlorinated paraffin and butyl rubber in proportion, add them into a rubber internal mixer, and mix them at 95° C. for 25 min, so that graphite and chlorinated paraffin produce an in-situ chemical reaction in butyl rubber to obtain butyl rubber / graphite masterbatch;

[0043] S2, weighing polyurethane, polyisobutylene, polyvinyl chloride resin, eucommia gum, foaming agent, sulfenamide accelerator, magnesium oxide, stearic acid, filler, plasticizer, naphthenic oil and metal powder in proportion, putting them into an internal mixer for uniform mixing, discharging sheets and cooling;

[0044] S3, the test piece is vulcanized by a flat vulcanizing machine, cooled, and a plastic sheet is obtained;

[0045] Among them, the vulcanization conditions are: 140℃×10MPa×30min;

[0046] S4. The plastic sheet is made into a sole (the sole is made of modified natural rubber non-slip rubber water ripple outsole) and a shoe upper by using a rubber boots making mold, and the rubber boots (weight less than 0.98 kg) are made by gluing, pressurizing and sewing.

[0047] Comparative Example 1:

[0048] A chemical-resistant and antistatic safety rubber boot, wherein the chemical-resistant and antistatic safety rubber boot is different from Example 3 only in that no polyisobutylene is added.

[0049] Comparative Example 2:

[0050] A chemical-resistant and antistatic safety rubber boot, the difference between the chemical-resistant and antistatic safety rubber boot and embodiment 3 is that no polyvinyl chloride resin is added.

[0051] Comparative Example 3:

[0052] A chemical-resistant and antistatic safety rubber boot, wherein the chemical-resistant and antistatic safety rubber boot is different from Example 3 only in that no graphite is added.

[0053] Comparative Example 4:

[0054] A chemical-resistant and antistatic safety rubber boot, the difference between the chemical-resistant and antistatic safety rubber boot and Example 3 is that no eucommia gum is added.

[0055] Comparative Example 5:

[0056] A chemical-resistant and antistatic safety rubber boot, the difference between the chemical-resistant and antistatic safety rubber boot and embodiment 3 is that no foaming agent is added.

[0057] Comparative Example 6:

[0058] A chemical-resistant and antistatic safety rubber boot, the difference between the chemical-resistant and antistatic safety rubber boot and Example 3 is that no chlorinated paraffin is added.

[0059] Comparative Example 7:

[0060] A chemical-proof and antistatic safety rubber boot, the difference between the chemical-proof and antistatic safety rubber boot and embodiment 3 is that no metal powder is added.

[0061] Comparative Example 8:

[0062] A chemical-resistant and antistatic safety rubber boot. The difference between the chemical-resistant and antistatic safety rubber boot and embodiment 3 is that natural rubber is used instead of butyl rubber.

[0063] The rubber boots obtained from the above Examples 1-3 and Comparative Examples 1-8 were tested for upper tensile strength, crack resistance of the rubber boot outsole after 30,000 times of flexing, strength change rate after treatment with 96% sulfuric acid (or 50% sodium hydroxide), state of heat-resistant air aging at 140±2°C for 8h, and antistatic performance.

[0064] Specific: The reference standard for the presence or absence of cracks in the outsole of rubber boots after 30,000 times of flexural resistance is HG / T2580.

[0065] The flexural resistance of the rubber boots outsole is 30,000 times with or without cracks, reference standard: HG / T2873-1997.

[0066] Reference standard for antistatic properties: GB20991-2007.

[0067] Finally, the comprehensive performance of the rubber boots was measured, and the results are shown in Table 1.

[0068] Table 1 Performance parameters of rubber boots obtained in Examples 1-3 and Comparative Examples 1-8

[0069]

[0070] In summary, after the mineral filler is modified by chlorinated paraffin, the mineral flakes are randomly distributed in the butyl rubber matrix at a nanometer scale, which blocks the diffusion of the liquid medium in the rubber material, thereby significantly improving the corrosion resistance of the obtained rubber material and the final rubber boots.

[0071] Graphite, carbon black, metal powder and carbon fiber are conductive agents with good conductive properties. When used as raw materials for the preparation of rubber boots, they can effectively eliminate static electricity, play a good anti-static role, and improve the safety and comfort of users wearing rubber boots.

[0072] The structure of butyl rubber changes after foaming, forming a large number of interconnected holes or closed bubbles and then generating a two-phase interface. When the incident sound wave encounters the two-phase interface, refraction and reflection will occur, changing the propagation path of the sound wave and reducing the propagation speed of the sound wave. After repeated propagation, the energy is continuously dissipated, increasing the attenuation of the sound wave and reducing the sound during the user's walking in the safety rubber boots, which is beneficial to improving the wearing experience and facilitating the use of these rubber boots in combat.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chemical-resistant and antistatic safety rubber boot, characterized in that: The rubber boots include the following raw materials in parts by weight: 30-40 parts of polyurethane, 80-100 parts of butyl rubber, 70-90 parts of polyisobutylene, 50-60 parts of polyvinyl chloride resin, 20-40 parts of mineral filler, 10-20 parts of eucommia gum, 5-15 parts of foaming agent, 5-15 parts of accelerator, 20-40 parts of magnesium oxide, 20-40 parts of stearic acid, 5-15 parts of filler, 10-20 parts of plasticizer, 10-20 parts of thickener, 5-15 parts of chlorinated paraffin and 10-20 parts of conductive agent.

2. The chemical-resistant and antistatic safety rubber boots according to claim 1, characterized in that: The rubber boots include the following raw materials in parts by weight: 35 parts of polyurethane, 90 parts of butyl rubber, 80 parts of polyisobutylene, 55 parts of polyvinyl chloride resin, 30 parts of mineral filler, 15 parts of eucommia gum, 10 parts of foaming agent, 10 parts of accelerator, 30 parts of magnesium oxide, 30 parts of stearic acid, 10 parts of filler, 15 parts of plasticizer, 15 parts of thickener, 10 parts of chlorinated paraffin and 15 parts of conductive agent.

3. The chemical-resistant and antistatic safety rubber boots according to claim 2, characterized in that: The preparation method of rubber boots is as follows: S1. Weigh mineral filler, chlorinated paraffin and butyl rubber in proportion, add them into a rubber internal mixer, and mix them at a temperature of 90-100° C. for 20-30 minutes, so that the mineral filler and chlorinated paraffin produce an in-situ chemical reaction in the butyl rubber to obtain a butyl rubber / mineral filler masterbatch; S2, weighing polyurethane, polyisobutylene, polyvinyl chloride resin, eucommia gum, foaming agent, accelerator, magnesium oxide, stearic acid, filler, plasticizer, thickener and conductive agent in proportion, putting them into an internal mixer for uniform mixing, discharging sheets and cooling; S3, the test piece is vulcanized by a flat vulcanizing machine, cooled, and a plastic sheet is obtained; S4, using the plastic sheet to make a rubber boots mold to make a sole and an upper, and then making the rubber boots by gluing, pressurizing and sewing.

4. The chemical-resistant and antistatic safety rubber boots according to claim 3 are characterized in that: In step S3, the vulcanization conditions are: 140°C×10MPa×30min.

5. The chemical-resistant and antistatic safety rubber boots according to claim 3 are characterized in that: The mineral filler is one or more of kaolin, diatomaceous earth, talc, graphite, carbon black, alumina powder, glass powder, asbestos powder, mica powder and quartz powder.

6. The chemical-resistant and antistatic safety rubber boots according to claim 3, characterized in that: The accelerator is one or more of dithiocarbamate accelerators, xanthate accelerators, thiazole accelerators, sulfonamide accelerators, aldehyde amine accelerators, guanidine accelerators, and thiourea accelerators.

7. The chemical-resistant and antistatic safety rubber boots according to claim 3, characterized in that: The thickener is one or more of dioctyl phthalate, dibutyl phthalate, naphthenic oil and petroleum resin.

8. The chemical-resistant and antistatic safety rubber boots according to claim 3, characterized in that: The conductive agent is one or more of graphite, carbon black, metal powder and carbon fiber.

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