PROTECTIVE SUIT OF RESCUER FOR OPERATION AT DEBRIS CLEARANCE Russian patent published in 2015 - IPC F41H1/02 

FIELD: personal demand items.

SUBSTANCE: protective suit of rescuer for work at debris clearance consists of trousers with protective stockings, shirt with hood, two-finger gloves and inner helmet. Trousers are sewed together with the stockings which are ended with rubber saddle with boots to which tapes are sewn for fastening to feet, the top part of trousers has shoulder straps and half rings, and the shirt is combined with hood. From the back to its lower edge the intermediate half belt is sewn which is passed between feet and is buttoned in the lower part of shirt in front, and sleeves are ended with loops which are put on a thumb after putting on of gloves, the shirt sleeves have cuffs enclosing a wrist, and the hood is fixed on neck by tape and plastic prong, and the shirt bottom is pulled together with elastic tape and is fitted with belt, and trousers are held by means of two straps and buckles formed by half rings and fixed from below with half belts, it is also fitted with the protective vest from electromagnetic radiation, consisting of a fabric lining, connected to a protective shell, and in the fabric lining the elastic frame studs are fixed by means of clamps on the waist belt, and the protective shell is fastened on elastic frame studs, the protective shell has three layers, and the first layer, facing towards the operator environment, is implemented in the form of the interconnected rings, and the third layer facing towards the operator's body is made of the punched polymeric material, for example aramide fibre, and the second layer located between them is made elastic from elastic mesh elements, the material of rings is stainless steel which is processed by composite material with the increased protective properties from electromagnetic radiation, the composite material for protection against electromagnetic radiation consists of polymeric base with distributed particles of compounds (Fe, Si) or - Co with nanocrystal structure with the volume density (0.6÷1.4)·10^-5 1/nm³. The polymer base for fixation of powder particles position with nanocrystalline structure is made in the form of structure elements alternating between each other and arranged at the angle 90° to each other, and each of elements is made in the form of lengthy particles arranged in parallel rows. The particles, located to the left and to the right from it, are shifted to the value not exceeding a half of the maximum size of the particle, differing in that the second layer located between them is made elastic from ferromagnetic fabric containing a base, binding polymeric substance and powder of ferromagnetic material, and the fabric base is fabricated by the method of calico weaving. The main and weft threads are arranged as alternating mylar and magnetosoft monothreads, the amount of threads per meter is 5000÷7000, the magnetosoft monothreads are made from supermalloy or from molybdenic permalloy with the diameter 0.05÷0.1 mm, and mylar threads have linear density 10÷20 tex, the ferromagnetic powder is the powder of high-coercive alloy, and the content of components in fabric is in the following ratio, wt %: lavsan threads 10÷15 ; monothreads of magnetosoft material 20÷25; binding polymeric substance - acrylic copolymers 10÷15; powder of a high-coercive alloy 50÷55, and the intermediate layer located between an external shell and the layer facing towards the operator's body is made of the material absorbing radioactive radiation which is the material containing the filler in the form lead oxides (oxide of lead II, IY) and binder - polyvinylbutyral, ethyl acetate, di-(alkyl polyethylene glycol) ether of phosphoric acid with the formula where n = 6, R - the alkyl residue containing 8-10 atoms of carbon, and ethyl cellulose at the following ratio of components, is used, wt %: oxide of lead II, IY 30.6-56.8; polyvinylbutyral 3.8-10.2; ethyl acetate 14.3-26.5; di-(alkyl polyethylene glycol ether of phosphoric acid) 0.2-0.4; ethyl cellulose - the rest; the new composition of the binder in the offered invention provides full compatibility with oxides of lead and allows to produce materials with high lead equivalent and degree of flexibility which has good adhesion to metals, to concrete, brick, also the material is the high-concentrated suspension which quickly hardens in air, and the material viscosity is 20÷70 Pa·s that allows to cast from it films of various thickness by die or extruder, to apply on a surface with brush, splashing, fill in various cavities, cracks and channels.

EFFECT: increase of efficiency of protection of rescuer in seismic and hazardous conditions in combination with radioactive radiation due to use of ferromagnetic material with improved parameters of absorption and dispersion of radioactive radiation, and also its increased durability.

9 dwg