211 results about "Protective gloves" patented technology

The invention discloses an antistatic protective glove and a preparation method thereof, and relates to the technical field of protective gloves. The antistatic protective glove is prepared from the following raw materials in parts by weight: 50 to 60 parts of natural latex, 40 to 50 parts of neoprene latex, 0.4 to 2 parts of potassium hydroxide, 1.2 to 1.8 parts of peregal O, 1.5 to 3 parts of sulfur, 1 to 2 parts of accelerant BZ, 3.5 to 5 parts of antistatic agent, 0.5 to 1 part of sodium carboxymethyl cellulose and 1.2 to 1.8 parts of anti-aging agent. The preparation method of the antistatic agent comprises the following steps: firstly, reacting 1, 3, 5-tri (2, 3-epoxypropoxy) benzene with N1, N7 dimethyl heptane-1, 7-diamine to obtain a hyperbranched polymer, and then carrying out quaternization on the hyperbranched polymer and chlorinated octadecane to obtain the antistatic agent. The antistatic protective glove provided by the invention has excellent antistatic performance and anti-aging performance.

The invention discloses a preparation process of cutting-resistant and puncture-proof protective gloves, and belongs to the technical field of preparation methods of protective gloves. According to the technology, the four steps of pretreatment, composite coating material dipping, dipping of different butadiene-acrylonitrile rubber latexes and partitioned vulcanization treatment are adopted, balance of protection performance and wearing comfort is achieved through combination of technology optimization and material innovation, the cutting resistance of the prepared protective gloves reaches the grade E of the GB24541-2022 standard, the puncture resistance and the tear resistance both reach the grade 4, and the service life of the protective gloves is prolonged. And the composite material is good in air permeability and excellent in durability, is particularly suitable for high-risk operation scenes such as military, security and metal processing, and has remarkable technical progress and industrialization value.

A static dissipative single use glove having a vertical resistivity of less than about 108 Ohm when determined according to EN 1149-2 and surface resistivity of less than or equal to about 106 Ohm when determined according to EN 1149-1, which includes a polymeric layer comprising conductive filler particles. A method to produce the single use glove is also disclosed.

The utility model discloses a wear resistance testing device for protective gloves, which comprises a test board, a test frame and a sample frame, the test frame and the sample frame are respectively and vertically mounted on two sides of the test board, the bottom of the test frame is mounted on the test board through a first adjusting component in a front-back sliding manner, and a grinding wheel is arranged in the test frame in a lifting manner. The bottom of the sample frame is installed on the test bench in a left-right sliding mode through a second adjusting assembly, a hand mold is rotatably installed on the sample frame through a third adjusting assembly, the surface of the hand mold is covered with an air inflation film layer, and the outer side of the air inflation film layer is sleeved with a protective glove. The device has the advantages that comprehensive wear resistance detection can be carried out on all positions of the protective glove, including the finger face, the first web, the palm and the back of the hand.

The utility model discloses welding splash-proof equipment for shipbuilding, and relates to the technical field of welding auxiliary equipment, the welding splash-proof equipment comprises a base and two carrying rings, the base is provided with a welding cabin and an exhaust assembly, the exhaust assembly is used for leading out waste gas generated in the welding process in the welding cabin, the welding cabin is provided with an observation window, a fixed pipe is fixed on the welding cabin in a penetrating manner, and the observation window is provided with an observation window. The ends, away from the welding cabin, of the fixing pipes fixedly communicate with fireproof cloth sleeves. The welding cabin and the two end plates are used for comprehensively wrapping the welding position of a pipe fitting, the splicing position of the pipe fitting can be clearly checked through the observation window, a worker can penetrate through the fireproof cloth sleeve and the fixing pipe to enter the welding cabin after wearing protective gloves and protective sleeves, and the worker holds a welding gun by hand to complete welding machining of the pipe fitting in the welding cabin. The sleeve opening of the fireproof cloth sleeve can be tightened by means of the elastic rope and the pig nose buckle, welding spatter is further prevented from overflowing, the personal safety of workers is guaranteed, and fire protection hidden dangers are reduced.

The invention discloses an anti-radiation medical protective glove and a production process thereof, and belongs to the technical field of medical protective gloves, a polydopamine hollow microsphere is prepared by using ZIF-8 as a self-sacrifice template, bismuth and gadolinium elements are loaded through hydrothermal synthesis and ion adsorption, a composite shielding microsphere is prepared, and the composite shielding microsphere is used for preparing the anti-radiation medical protective glove. Then, the composite shielding microspheres and a nano starch enhanced cross-linked network are synergistically introduced into a natural latex matrix, after dipping forming, a hydrophilic / hydrophobic wetting gradient is constructed on a glove lining through mask auxiliary plasma etching, and the anti-radiation medical protective glove is prepared. Through the cooperation of the shielding function of the composite microspheres, the mechanical enhancement of a nano starch cross-linked network and the surface one-way moisture conduction function, the glove has excellent radiation protection performance and also has the characteristics of being light, flexible and comfortable to wear, the problems that a traditional lead rubber glove is heavy, rigid and poor in air permeability are effectively solved, and the service life of the glove is prolonged. The system is especially suitable for medical scenes requiring high flexibility and comfort, such as interventional radiosurgery.

A manual sorghum threshing device belongs to grain threshing devices and comprises a first unit, the first unit comprises a protective glove, the protective glove comprises a finger portion and a palm portion, a protective plate is arranged on the finger portion and / or the palm portion, and spine protrusions used for increasing friction force are arranged on the protective plate; the second unit comprises two unit bodies of the same structure, the two unit bodies are hinged, a threshing plate is fixedly arranged relative to the inner side faces of the unit bodies, the other side of the threshing plate is an arc-shaped edge, and edge teeth used for threshing are arranged on the arc-shaped edge. After the two unit bodies are buckled, the threshing plates arranged on the two unit bodies are matched to form a ring structure allowing sorghum stalks to penetrate through. The small-scale sorghum threshing device can achieve small-scale manual sorghum threshing, is simple and reasonable in structural design, convenient to use and low in cost, and can achieve high-efficiency sorghum threshing, so that the labor intensity of manual threshing is reduced, and the manual threshing efficiency is improved.

The invention discloses a rubber glove box protective glove with a latex coating and a manufacturing method. The glove comprises a mould pressing rubber layer and a local latex coating. The mold pressing rubber layer is prepared through mold pressing vulcanization forming and comprises rubber, a shielding component, a reinforcing filler, a filling agent, an active agent, an anti-aging agent, a plasticizer, a lubricating release agent, a vulcanizing agent and an accelerant. The local latex coating is prepared through latex impregnation, and latex components comprise latex, reinforcing filler, a stabilizer, a diffuser, an active agent, an anti-aging agent, a vulcanizing agent, an accelerant, a thickening agent, a defoaming agent and a coloring agent. Through formula design of the mold pressing rubber layer and the local latex coating and optimization of a latex dipping process, the glove box glove with high mechanical hazard protection performance in the local position is obtained on the premise that the ray protection function and wearing comfort are guaranteed, and the service life of the glove box glove is prolonged. And the service life of the glove box protective glove under the radiation and mechanical dual harm scenes is prolonged.

The invention discloses a blended yarn containing metal short fibers and a preparation method thereof.The blended yarn containing the metal short fibers comprises the following components: the metal short fibers, functional short fibers and matrix short fibers, the metal short fibers are made of at least one of steel wires, tungsten wires and silver-plated alloy wires, the components of the metal short fibers are 5-18%, the functional short fibers are made of metal fibers, and the matrix short fibers are made of metal fibers. The component of the functional short fiber is 20-35%, the functional short fiber is at least one of ultra-high molecular weight polyethylene, aramid fiber, glass fiber and basalt fiber, the component of the matrix short fiber is 47-72%, and the matrix short fiber is at least one of chinlon, polyester, polypropylene fiber, viscose, cotton fiber and fibrilia. The blended yarn material which is low in cost, high in stability and capable of meeting the cutting-resistant and conductive requirements at the same time is developed, the blended yarn material can be suitable for industrial protective gloves, anti-static work clothes, electromagnetic shielding fabric and other scenes at the same time, the application range of the blended yarn material is widened, and the blended yarn material has the high competitive advantage.

The utility model belongs to the technical field of radioactive waste treatment, and particularly discloses a radioactive waste sorting box which comprises a box body, a feeding port and a discharging port are formed in the two sides of the box body respectively, a feeding conveying belt and a discharging conveying belt are arranged in the feeding port and the discharging port respectively, and a vibration conveying plate and a roller conveyor are sequentially arranged between the two conveying belts. The box body is provided with a supporting platform, the vibration conveying plate is connected with the supporting platform through springs, the roller type conveyor is fixedly connected with the side edge of the supporting platform, a metal collecting box is arranged on the lower portion in the box body, and a transparent observation window is installed at the position, above the discharging conveying belt, of the side edge of the box body. And two protective glove interfaces are arranged on the transparent observation window. According to the radioactive waste sorting device, the vibrating conveying plate and the roller type conveyor are arranged, metal objects in radioactive waste are preliminarily separated, then the metal objects are manually sorted after being preliminarily separated, the time consumed by manual sorting work can be shortened, and the working efficiency is improved.

The utility model belongs to the technical field of skiing equipment, and particularly relates to a small foldable skiing device which comprises an auxiliary skiing crawler belt internally provided with a hub motor, folding assemblies are rotationally installed on the outer walls of the two sides of the auxiliary skiing crawler belt, each folding assembly comprises a hollow folding frame, and a telescopic assembly is arranged at one end of each hollow folding frame. The telescopic assembly comprises a fixed telescopic frame and a fixed telescopic rod, one end of the fixed telescopic frame is rotationally connected with one end of the hollow folding frame, a detachable protective glove is arranged on the upper surface of one end of the fixed telescopic rod, and a quick release assembly is arranged at one end of the fixed telescopic rod. The device is simple in structure and convenient to use, a user can conveniently carry the device to a great extent, so that the practicability of the device is improved, the two hands of the user can be protected against cold through the detachable protective gloves, then the two hands of the user are kept warm, and the practical effect of the device is enhanced.

The invention discloses a raw material filtering device for PVC protective glove production and a control method of the raw material filtering device, and relates to the technical field of PVC protective glove production, the raw material filtering device comprises a heat insulation shell, a cleaning mechanism and a filtering cylinder arranged in the heat insulation shell, and the cleaning mechanism comprises a mounting frame fixedly mounted on the back face of the heat insulation shell; a connecting rod is fixedly connected to the lower surface of the mounting frame, a mounting pipe is fixedly connected to the surface of the connecting rod, and an electromagnet is fixedly connected to the inner wall of one end of the mounting pipe. According to the device, when the filtering effect of the filter cartridge is reduced, the electromagnet is powered off, the push rod is driven to be away from the electromagnet under the action of the elastic force of the spring, the cleaning brush is further made to be attached to the inner wall of the filter cartridge, the filter cartridge rotates to enable the cleaning brush to scrape the inner wall of the filter cartridge, and therefore the filter cartridge is cleaned; and the sealing ring cleans the surface of the push rod, so that raw materials are not prone to entering the mounting pipe.

This invention relates to a high-precision molding method for glove box protective gloves, comprising: preparing a rubber compound; feeding the rubber compound into a calender, calendering it into sheets of fixed thickness each time; based on a modular design, cutting the sheets into several modular pieces of different sizes and shapes; placing the modular pieces of different sizes and shapes into a glove mold according to a set splicing position for compression vulcanization; and obtaining the glove box protective gloves after demolding. This invention, through extrusion calendering and modular design of the sheets, can precisely control the dimensional accuracy of the gloves, improving problems such as waste and high defect rates caused by inconsistent mold design and vulcanized sheet thickness, and achieving the production of large-size, irregularly shaped, high-precision, ultra-thin gloves.

The utility model relates to the technical field of medical instruments, and discloses a portable medical safety cabinet which comprises a cabinet body with a containing cavity, an opening and closing door is movably arranged on the cabinet body, and when the opening and closing door is opened, medicine can be fed into the cabinet body from the opening and closing door and taken out from the cabinet body; the negative pressure device can keep the accommodating cavity in a negative pressure state; a first flexible protective glove and a second flexible protective glove, wherein the first flexible protective glove is arranged on one side of the cabinet body; the second flexible protective gloves are arranged on one side, opposite to the first flexible protective gloves, of the cabinet body; the first flexible protective glove and the second flexible protective glove can be used for the left hand and the right hand of a medical worker to penetrate through respectively. Compared with the prior art, the medical safety cabinet has the advantages that the medical safety cabinet can ensure that sol, splashes and medicine particles generated by some special medicines cannot cause harm to medical staff, further effectively ensures the safety of the medical staff, and is simple in overall structure, small in size, small in occupied space and convenient to use and carry.

According to the quick-drying medical ray protective cream and the preparation method and application thereof, through effective combination of a radiation-proof material and a specific film-forming system, a powerful protective film can be quickly formed on the skin surface after the protective cream is smeared, the ray shielding effect of the protective cream is superior to that of interventional protective gloves, and meanwhile, the protective cream does not contain heavy metal such as lead and the like, so that the service life of the protective cream is prolonged. The safety and non-toxicity can be ensured. The paste can be directly smeared on the skin, the problems that traditional lead gloves are heavy and inflexible and the like are solved, the paste is particularly suitable for scenes such as interventional operations, effective ray protection can be achieved, and meanwhile operation in the operation process cannot be affected.

This invention discloses a lightweight, long-tube chemical protective glove and its preparation method. The lightweight, long-tube chemical protective glove includes an inner glove core and a rubber compound coated on the outer layer of the glove core. The preparation method includes: glove core preparation; rubber compound preparation; glove core pretreatment; glove core impregnation; and lightweight, long-tube chemical protective glove preparation. The advantages of this invention are that the prepared long-tube chemical protective glove maintains a rapid film-forming rate while considering both abrasion resistance and chemical protection, is lighter and thinner, and offers better wearing comfort and flexibility.

A protective guard for a hand, finger or thumb includes a first thermoplastic layer heat welded to second thermoplastic layer. The second thermoplastic layer has a thickness that is greater than the thickness of the first thermoplastic layer.

The coating 10, 12 comprises waterborne polymer resin and binding agent. Preferably the resin is polyurea and the binder is added as a thickened aqueous premix comprising polyelectrolyte or polysaccharide and including a water retaining agent and polyurethane. The preferred coating applied to a fabric 8 glove has a viscosity of 400-1600 cps. The coating is preferably applied to a preheated wearable item, gelled for 5-20 minutes and cured at 95-105°C. The disclosed protective glove comprises nylon fabric 8 coated with two layers 10, 12 comprising waterborne polyurea, sodium carboxymethyl cellulose binder, water based polyurethane dispersion and pigment.

The invention belongs to the technical field of medical instruments, and discloses a medical pre-disinfection whole-course protective glove and a preparation method thereof.The body of the medical pre-disinfection whole-course protective glove is prepared from a latex outer layer and a medicine-soaked gauze lining layer which are integrally formed; the medicine-soaked gauze lining layer is prepared by soaking medical gauze in ethanol-herbal slow-release disinfection gel and then drying; the ethyl alcohol-herbal slow-release disinfection gel has weak viscosity, and when the ethyl alcohol-herbal slow-release disinfection gel is not used, the upper face and the lower face of the interior of the latex glove body are bonded, air in the latex glove body is emptied, meanwhile, an opening of the latex glove body is closed, and active ingredients are prevented from volatilizing and escaping. According to the invention, extra hand disinfection is not needed, active protection can be provided in the whole process of use by medical personnel, the protection effect is good, the use is convenient, the cost performance is high, and the device can be widely applied to the scenes of high-risk infectious virus sampling, field emergency medical assistance, chemotherapy drug configuration and the like, and has a wide application range.

The utility model discloses an unpacking machine capable of being used for both large-bag and small-bag packages, which relates to the technical field of unpacking and comprises a mounting plate, a plurality of supporting rods fixed at the bottom of the mounting plate, an electric sliding rail arranged at the bottom of the mounting plate, an electric sliding block arranged at the bottom of the electric sliding rail, and an electric hoist arranged at the bottom of the electric sliding block. A pneumatic gripper is arranged at the bottom of the electric hoist, an inverted-truncated-cone-shaped hopper is arranged below the mounting plate, connecting rods are fixed between the outer side of the hopper and the supporting rods, a bag unpacking pipe is fixedly connected to the lower end of the hopper, a plurality of isolation type bag unpacking structures arranged at equal intervals are arranged on the bag unpacking pipe, and the number of the isolation type bag unpacking structures is six. The isolation type bag opening structure comprises a stretching-in hole formed in the bag opening pipe, and a detachable protective glove is installed in the stretching-in hole. According to the isolation type bag unpacking structure, when a worker unpacks a large packing bag, the hands of the worker do not make contact with materials, and corrosive materials such as powdery sodium hydroxide are prevented from falling on the large packing bag to be injured.

The present invention discloses a wear resistance tester for protective gloves, comprising a test bench and a column; further comprising a first guide portion mounted on the column; a hand model assembly mounted on the first guide portion; a hand model driving device connected to the hand model assembly; a grab test device mounted on the test bench; a grinding rod assembly mounted on the test bench; a grinding rod driving device connected to the grinding rod assembly; the grinding rod assembly and the grinding rod driving device are connected to the test bench via a second guide portion. The present invention is a wear resistance tester mainly for the thenar muscle (tiger's mouth) and fingertips of protective gloves, which restores the state of actual working conditions, and the performance detection of protective gloves is closer to real data.

The utility model discloses a protective glove for preventing a sensor at a finger end from falling off or poor contact, which belongs to medical auxiliary equipment and comprises a hand-shaped support plate made of a hard plastic plate, the support plate is provided with a palm plate and five finger support plates, the palm plate is the same as a palm in shape, and the five finger support plates are integrally formed at the end of the palm plate and are in a separated state; an upper protective sleeve made of fabric is arranged on the upper face of the supporting plate, a glove allowing a hand to stretch into is defined by the upper protective sleeve and the supporting plate, the front ends, located at fingers, of the upper protective sleeve are in a shortage shape, so that the ends of the fingers are exposed, a first bandage is arranged at the wrist joint of the glove, and a second bandage is arranged at the wrist joint of the glove. Five second bandages are arranged at the first knuckle positions, close to the ends of the fingers, of the upper protective sleeve. The utility model effectively solves the problem that a blood oxygen probe for monitoring the blood oxygen of a patient and other similar sensors sleeved at the end part of a finger are easy to move to cause poor contact or fall off.

The utility model discloses a double-layer protective glove, and relates to the technical field of gloves. According to the technical key points, the protective device comprises a first protective layer and a second protective layer, the first protective layer is embedded in the second protective layer, and the first protective layer and the second protective layer are detachably connected together through a fixing module installed on the outer side of the wrist of the first protective layer; materials used by the second protective layer and the first protective layer have the function of preventing objects in the external environment from hurting the hands of a user. According to the glove of the double-layer structure, when the second protective layer is accidentally damaged, the first protective layer located in the glove can temporarily protect the hand of a user, and therefore the risk that the hand of the user is accidentally injured in the working process due to the fact that the second protective layer is damaged is effectively reduced.

The invention discloses a multi-layer glove box protective glove with a surface anti-skid function and a preparation method thereof, the glove comprises a rubber layer and a waterborne polyurethane coating or a polyurethane rubber layer arranged on the surface of the rubber layer, the surface friction coefficient of the glove is extremely high, and the glove can be effectively prevented from slipping when a smooth tool is grabbed. The rubber layer comprises rubber, zinc oxide, magnesium oxide, stearic acid, an anti-aging agent, an internal lubricant, a plasticizer, a filler, a silane coupling agent, sulfur and an accelerant; the polyurethane rubber layer comprises mixed polyurethane, zinc oxide, stearic acid, zinc stearate, an NH-2 active agent, an anti-aging agent, carbon black, sulfur and an accelerant. The glove is obtained by adhering or pressing the rubber layer and the polyurethane rubber layer together and then performing vulcanization molding; or the surface of the vulcanized and molded rubber layer is coated with a waterborne polyurethane coating liquid, sizing and curing are carried out, and the waterborne polyurethane coating liquid comprises a waterborne polyurethane emulsion, a thickening agent, a wetting agent, an anti-skid filler and deionized water.

The utility model provides an ointment smearing protective glove, relates to the technical field of medical instruments, and solves the technical problems that in the prior art, after ointment is smeared on parts such as finger joints, the ointment is easily driven by the inner wall of the glove to move, so that the ointment cannot uniformly cover an area needing to be treated, and the treatment effect is affected. The ointment smearing protective glove comprises a glove body which is used for being directly worn on the hand of a patient after ointment is smeared on the hand of the patient; the glove body comprises a palm part and finger parts, the palm part and the finger parts are arranged in a two-body mode, the palm part is provided with half-finger sleeves corresponding to the index finger, the middle finger, the ring finger and the thumb, the finger parts are arranged on finger sleeves corresponding to the half-finger sleeves, and hook-and-loop fasteners connected to the half-finger sleeves are arranged on the finger sleeves; in this way, in the ointment smearing process, the palm part of a patient can be smeared firstly, the palm part is arranged on the hand of the patient in a sleeving mode, and therefore it is guaranteed that the ointment is not prone to being driven by the inner wall of the glove to move after being smeared.

A protective glove 2 comprises a hand portion 4, a cuff portion 6 and an adjustable fastener 46, a dorsal region of the hand 4 and cuff 6 portions comprise an ulnar layer 36 extending from an ulnar edge of the glove to a free edge and a radial layer 38 extending from a radial edge of the glove to a free edge, the ulnar layer 36 and the radial layer 38 overlap at their free edges. The adjustable fastener 46 comprises a first lace retainer 50 attached to the ulnar layer 36 at a distance from the free edge, a second lace retainer 52 attached to the radial layer 38at a distance from the free edge, a lace 48 engaged with the first 50 and second 52 lace retainers, and an adjustment device (56, Fig. 2) engaged with the lace 48 and moveable between a released position and a locked position. The protective glove is preferably a boxing glove or inner glove for combat sport.

The present invention discloses a medical protective suit with adjustable size and an adjustment method thereof, which relates to the technical field of medical protective suits. In order to solve the problem that the existing protective suits, during use, can fit the protective suit to the wearer's body shape, a large area of ​​exposed Velcro structure is used to adjust the size of the protective suit. However, the Velcro connection strength is low, and it is easy to loosen due to the pulling force of the limb swinging during operation. In outdoor environments, Velcro is very easy to be dusty, which affects the stickiness and service life, resulting in inconvenience in subsequent adjustment. A zipper is installed at the front end of the medical protective suit top; a first pleated telescopic sleeve is provided at one end of the sleeve, and a protective glove is provided at one end of the first pleated telescopic sleeve; a second pleated telescopic sleeve is provided at the lower end of the trouser leg, and a rubber overshoe is provided at one end of the second pleated telescopic sleeve; a pleated telescopic section is provided on the outer wall of the medical protective suit bottom.

The utility model provides auxiliary packaging equipment for heat-resistant protective glove production, and belongs to the technical field of glove packaging. The auxiliary packaging equipment for heat-resistant protective glove production comprises an adjusting structure and an auxiliary packaging structure, the adjusting structure comprises a workbench, four limiting plates, mounting plates, screw rods and screw holes, the four limiting plates are arranged on one side of the workbench, the mounting plates are arranged on one sides of the four limiting plates, and the screw rods are arranged on the other sides of the four limiting plates. A plurality of screw holes are evenly formed in one side of the workbench, the mounting plate is fixed to the workbench through threaded connection of the screws and the screw holes, the auxiliary packaging structure comprises a rotating assembly, a pressing assembly and a feeding assembly, the rotating assembly is arranged on one side of the workbench, the pressing assembly is arranged on the other side of the workbench, and the feeding assembly is arranged on the other side of the workbench. The pressing assembly is connected with the rotating assembly. In the auxiliary packaging equipment for heat-resistant protective glove production, the auxiliary packaging equipment can conveniently adapt to packaging boxes of different sizes, and the practicability of the equipment is improved.

The invention provides an anti-arc light, flame-retardant and heat-resistant aramid electric welding protective glove and a preparation method thereof. The arc-light-resistant, flame-retardant and heat-resistant aramid electric welding protective gloves are prepared by preparing a glove outer layer from yarn fibers impregnated with functional slurry and composite yarns coated with glass fibers, taking gray cloth coated with the functional slurry as a middle lining cloth layer and taking a glove blank layer woven by the yarns as an inner layer. Wherein the adopted functional slurry comprises the following components in parts by weight: 0.1-15 parts of an anti-arc light material, 0.1-10 parts of a flame-retardant material, 0.1-10 parts of a heat-resistant material, 20-36 parts of an adhesive, 1-1.5 parts of a cross-linking agent, 4-6 parts of a penetrant and 10-20 parts of a solvent. According to the arc light-resistant, flame-retardant and heat-resistant aramid electric welding protective glove, the UPF can reach 1400 or above, the flame-retardant grade is 2-4, the heat-resistant contact grade is 2-3, and the convective heat-resistant grade is 3-4.

The utility model provides a safety protective suit for liquid oxygen explosion operation, which comprises a protective jacket, trousers, a protective helmet, protective boots, a waistband and protective gloves, the protective jacket is provided with an inner container, a high collar, a front fly and cuffs, the protective jacket and the trousers are made of pure cotton four-layer composite fabrics, the trousers are sealed by metal snap fasteners and magic tapes, and the protective boots are arranged on the protective helmet. The protective helmet is a flame-retardant anti-smashing safety helmet and is combined with the protective head sleeve to be worn, a protective shawl is arranged below the protective helmet to protect the face and the neck, high-strength protective goggles capable of rotating up and down are arranged to protect the eyes and the face of an operator, and safety protection of the operator on the liquid oxygen explosion site is mainly achieved.