RU2636927C2 - Oil-protection overall with modified heat-insulant - Google Patents

Abstract

FIELD: personal demand items.

SUBSTANCE: product belongs to the field of protective clothing from industrial and climatic factors with a function of protection against the aggressive effects of crude oil and oil products with an increased level of preservation of heat-shielding properties for overall application in conditions of low temperatures. Oil-protection overall with a modified heat-insulant, including sleeves, closed collar, hood, characterized by being made of two kinds of external materials, joint on the frontal surfaces, taking into account the experimentally established topography of oil contamination zones distribution: in the areas with the maximum likelihood of direct contact with oil, including the overall front, trousers and sleeves bottom, the seating surface of the trousers back, the upper parts of sleeves, and the hood - film membrane material with high levels of protection against crude oil, bad weather, static electricity accumulation in combination with flame-retardant properties is used, which is located above two layers of material with fibrous composition of 100% cotton and a surface density of 145 g/m², between which a synthetic insulation, having a bonded structure in the form of a bulk adhesive web of high porosity made of elementary helical siliconeized fibers is located; in the areas with the least probability of direct contact with crude oil products, including the lower parts of sleeves, the middle of the back, the overall side and the central part of the rear halves of the overall - fabric mixed for workwear with oil repellent properties is used, under which two layers of material with fibrous composition of 35% cotton, 65% polyester and a surface density of 120 g/m² with moisture-proof impregnation is located, between which there is an inner layer of a modified insulation based on a synthetic insulation, having a bonded structure in the form of a bulk adhesive web of high porosity made of elementary helical siliconeized fibers and crumbs of para-aramid fiber with a filling rate of 300±3 g/m² is located, which practically does not change the heat transfer coefficient - less than 1%, and a reflective braid is made at the bottom of sleeves and trousers of the overall. The surfaces of the maximum risk of contact with oil on the sections of the upper seams of the sleeves, the side seams of the overall and the seams of sleeves attachment in the armholes are excluded from the design and replaced with seamless parts.

EFFECT: provision of combined oil-protective properties of overall both on the outer surface and in the inner layers, while ensuring an increased level of human thermal protection stability in oil-protection overall under cold conditions, simultaneously solving the problem of efficient use of crumbs of para-aramid fiber to expand methods and technologies for recycling of valuable aramid-containing products waste.

4 dwg

Description

The product belongs to the field of protective clothing from industrial and climatic factors with the function of protecting against aggressive effects of crude oil and petroleum products with a high level of preservation of heat-shielding properties for the use of the suit at low temperatures.

To protect against oil, there is a method of producing cotton fabric for industrial use with a complex of protective properties against acids and oil products (Patent No. RU 2010143281 A of 10.22.2010), including desizing, decoction, dyeing with active or direct dyes, final finishing, washing between stages, first hot and then cold water, where all types of finishes used are aimed at creating the effect of external protection against the interaction of aggressive liquids with fibrous compositions underlying the base material. But these compositions do not provide good indicators of breathability and hygroscopicity necessary for use in protective clothing with 100% use of such materials.

Known for lightweight protective clothing of a lifeguard operating under the conditions of potent toxic substances (Patent No. RU (11) 2503916 C2 of 02.10.2012), which consists of trousers with protective stockings, a shirt with a hood, two-fingered gloves, a comforter and a protective vest, where in a fabric the elastic frame supports are fixed to the lining by means of clips on the waist belt. And the protective shell is mounted on elastic frame racks and is made three-layer (the first layer is turned into the environment of the operator, treated with a polyfunctional foam composition for degassing, disinfection, disinfection, decontamination and screening of surfaces, volumes and objects from hazardous agents and substances with foam). However, the proposed costume does not allow solving two simultaneously important tasks of applying oil protection clothing in cold conditions: long-term continuous wearing and protection from low temperatures, because It requires the creation of a suit from a combination of materials that form a barrier to the aggressive effects of oil and oil products and at the same time form a heat-protective layer in clothing and hygienic comfort.

A protective suit is known for varnishes, varnishes, varnishes and painters of the paint industry (Patent No. RU (11) 141497 U1 of 04.23.2013), characterized in that the yoke, the central part of the front, the stand-up collar, the lower part of the sleeve, the middle part of the hood, the yoke back , the front of the halves of the overalls, the gum belt are made of Himosafe fabric resistant to aggressive chemicals of hazard class 1 and 2, and the side of the front, the back, the back of the halves of the overalls, the upper part of the sleeve are made of Premier Standard 250 " with high hygienic characteristics, where a combination of external materials, coated and uncoated with protective films from aggressive substances, is used to ensure hygienic indicators of clothing, but there is no insulation layer and thermal protection of the person is not provided.

Known heat-protective clothing (Patent No. RU 144386 U1 dated 08/20/2014) containing overalls, a hood with an elongated drape, mittens and shoe covers, characterized by a number of structural elements that provide structural sealing in different areas, thereby creating conditions for maintaining heat under clothing, but while not providing protection from oil and oil products and not creating a direct heat-protective layer of materials that meet the requirements for use at oil production and refining facilities.

The closest technical solution from the point of view of protection against oil is an oil-proof suit (Patent No. RU 110936 U1 dated 12/10/2011) made of mixed fabrics with water-repellent impregnation, consisting of a jacket and trousers / semi-overalls, with protective pads located on the shelves of the jacket, yoke back, hood, sleeves, on the front halves of the trousers, the lower parts of the rear halves of the trousers, characterized in that on the back of the jacket there are special overlays made of oil-tight fabric SAVUAR, 10-12 cm passing from the shelf to the back CLE and the front half of trousers made of oil proof fabric proceeds to a rear half of trousers by shifting the side seam of 10-12 cm, while the rear pad design provides cover halves neftezaschitnoy cloth trousers seating area. This design provides an effective combination of the level of protection against direct oil pollution and general hygiene indicators of clothing, however, with a gradual saturation of the inner layers of clothing with oil molecules, clothing is characterized by a decrease in thermal protection and loss of its original properties.

The objective of the proposed technical solution is to increase the heat-shielding properties of clothing while maintaining the oil protection properties of the product.

The task is achieved in that the overalls with modified insulation, including sleeves, a stand-up collar, a hood, are made of two types of external materials articulated on the front surfaces taking into account the experimentally established topography of the distribution of oil pollution zones: in areas of maximum probability of direct contact with oil - from a film membrane material Multinorm; in areas with the least likelihood of direct contact with crude oil products - from fabric mixed for overalls with oil-repellent properties of Greta-M. On the bottom of the sleeves and overalls a reflective tape is scribbled. The overalls are made of four types of internal materials, where under the parts of the outer material of the film membrane material Multinorm there are two layers of material “Calico”, between which is a synthetic insulation Hollofiber. Under the details of fabric mixed for workwear with oil-repellent properties of Greta-M, there are two layers of Tisi material, between which there is an inner layer of modified insulation based on Holloflber insulation and Kevlar fiber crumbs with a base filling rate of 300 ± 3 g / m ³ . Such filling with Kevlar fiber practically does not change the coefficient of thermal conductivity (less than 1%). In this case, the side seams of the overalls, the upper seams of the sleeves and the seams of threading the sleeves into the armhole are excluded from the structure, and the parts in the above sections are made integral to prevent oil from entering the product through the seams in the most dangerous places.

The construction of the overall is shown in FIG. 1. The outer surface of the overalls is made of two materials: in sections 1 of the maximum likelihood of direct contact with oil - from the film membrane material Multinorm (Concordia Textiles / Multinorm) - a unique fabric that has high protection against crude oil, bad weather, from the accumulation of static electricity combined with fire retardant properties. The front part, the bottom of the trousers and sleeves, the seat surface of the back of the trousers, the upper parts of the sleeves and the hood of the overalls are made of this fabric in overalls. In sections 2 - the least chance of direct contact with crude oil products - the jumpsuit is made of fabric mixed for overalls with oil-repellent properties of Greta-M. It possesses only sufficient indicators of wear resistance, protection against contamination with oil-containing products and air permeability indicators to form the required hygienic level of the space under clothing. The lower parts of the sleeves, the middle of the back, the lateral parts of the overalls and the central part of the rear halves of the overalls are made of this material. Reflective tape 3 is sewn on the bottom of the sleeves and trousers of the overalls.

Internal materials make up the insulating layer of oil-protective overalls and have a three-layer construction.

In FIG. 2 shows a sectional view of sections 1. Under the product details made of Multinorm 1 external material with oil barrier, there are two layers of “Coarse calico” coating material - 4 with a fiber composition of 100% cotton and a surface density of 145 g / m ² , providing the highest indicators of hygienic comfort, hygroscopicity and breathability. Between them there is an internal insulation layer 5 based on synthetic insulation - Hollofiber, which has a connected structure in the form of a three-dimensional high-porosity glued web of elementary spiral-shaped siliconized fibers.

In FIG. Figure 3 shows a section of sections with parts from the external material Greta-M -2, two layers of Tisi coating material are located - 6 (fiber composition: 35% cotton, 65% polyester, surface density 120 g / m ² ) with moisture-proof impregnation. Between them is the inner layer of the modified insulation 7 based on the highly porous Hollofiber fabric with the inclusion of a metered fraction of Kevlar-8 fiber crumbs with a base filling rate of 300 ± 3 g / m ³ substantiated by experimental studies. The diagram (Fig. 4) shows the thermal conductivity of Hollofiber - 9 insulation and modified Hollofiber insulation with Kevlar - 10 fiber when saturated with oil. Where it is seen that such an amount of Kevlar fiber practically does not change the thickness, porosity and density of the package of materials (less than 1%), which indicates the constancy of the air volume, the presence of which justifies the value of the thermal resistance of the insulation. And the Kevlar fiber crumb itself has a combination of strength, heat resistance properties and at the same time increases the heat-shielding properties of the overalls even in the extreme risk mode of saturating oil molecules with more than 50% of the void volume of the internal structure, which is confirmed by experimental studies (Fig. 4).

The technical result consists in enhancing the overall oil protection properties of the overalls both on the outer surface and in the inner layers, while providing an increased level of stability of the thermal protection of the person in the oil protective overalls in cold conditions. At the same time, the tasks of efficient use of Kevlar fiber chips are solved to expand the methods and technologies for the secondary processing of waste products for the production of valuable aramid-containing products.

Information sources

1. Application for the invention "METHOD FOR PRODUCING COTTON COTTON FOR TECHNICAL PURPOSE WITH A COMPLEX OF PROTECTIVE PROPERTIES FROM ACIDS AND OIL PRODUCTS" (RU 2010143281 from 10.22.2010).

2. Patent for the invention “EASY PROTECTIVE SUIT OF RESCUE, OPERATING UNDER CONDITIONS OF POWERFUL POISONING SUBSTANCES” (RU (11) 2503916 (13) C2).

3. Patent for utility model “Protective suit for varnishes, drying oil products, paint distributors of the paint and varnish industry” (RU (11) 141497 (13) U1).

4. Patent for utility model “Thermal protective clothing” RU (11) 144386 (13) U1).

5. Patent for utility model “Oil protection suit” (RU (11) 110936 (13) U1).

6. Concordia Textiles / Multinorm / The new EN1149 European Standard for protective clothing: Electrostatic properties. http://www.concordiatextiles.com/C1257137002C5786/0/030322AF8A8E5 B1FC125720500346FFA / $ file / The% 20new% 20EN1149% 20European% 20 Standard% 20for% 20protective% 20clothing.pdf.

Claims (1)

Oil protection jumpsuit with a modified insulation, including sleeves, stand-up collar, hood, characterized in that it is made of two types of external materials articulated on the front surfaces, taking into account the experimentally established topography of the distribution of oil pollution zones: in areas with a maximum probability of direct contact with oil, consisting of the front of the overalls, the bottom of the trousers and sleeves, the seat surface of the back of the trousers, the upper parts of the sleeves, and the hood - from a membrane film material, bladayuschego high levels of protection from crude oil, bad weather, by accumulation of static electricity in combination with flame-retardant properties, under which there are two layers of material with the fibrous composition of 100% cotton and a surface density of 145 g / m ^2, between which is a synthetic insulant having a bonded structure in the form of a voluminous adhesive web of high porosity from elementary spiral-shaped siliconized fibers; in areas with the least likelihood of direct contact with crude oil products, consisting of the lower parts of the sleeves, the middle of the back, the lateral part of the overalls and the central part of the rear halves of the overalls - from fabric mixed for overalls with oil-repellent properties, under which there are two layers of material with a fibrous composition: 35% cotton, 65% polyester and a surface density of 120 g / m ² impregnated with a waterproof, between which there is an inner layer of insulation based on a modified synthetic insulate la having a bonded structure in a three-dimensional laminated fabric of high porosity elementary spiral siliconized fibers and para-aramid fiber crumbs with normal filling bases 300 ± 3 g / m ^2, which practically does not change the heat transfer coefficient of less than -1%, as well as on the bottom sleeves, and trouser overalls on the reflective tape.

Images