CN1062923C - Radiation preventing fabric and its making method - Google Patents

Abstract

The present invention provides a radiation-resistant textile capable of reflecting and absorbing electropositive ions and electromagnetic wave x rays and a manufacture method thereof. Mixed textiles of blended synthetic fibers of common textile fibers and substances containing carbon, barium and other elements are used as basic materials, and the basic materials are plated with silver, copper, nickel and other metal by a chemical plating method after being activated and sensitized; subsequently, the processing of molding at a single surface or printing on a flat net is carried out on acrylate paste printing slurry of the substances containing various elements, such as silicon, carbon, sodium, niobium, lithium, ferrum, etc. The radiation-resistant textile has a good function of absorbing electromagnetic radiation (attenuation by 40 to 60 decibels within the range of 30 to 1000 MHz) and can block partial x rays; simultaneously, the radiation-resistant textile has a function of static electricity elimination.

Description

Radiation-proof fabric and manufacture method thereof

The present invention relates to a kind of technology with textile material-radiation-proof fabric and manufacture method thereof, described radiation-proof fabric is widely used in the protection of radiation such as carbonium that radar, electronic computer, computer, physiotherapy equipment, micro-wave oven, electronic dry machine, large-screen receiver etc. send, electromagnetic wave, x ray; The shielding material of precision instrument, cable etc.; Flat heating element; Explorer, fisherman's the life vest that plays reflex.

Along with science and technology development, society enters electronic age, and various electronic apparatus have now entered huge numbers of families again except that being widely used in industrial fields such as military project, scientific research and workers and peasants doctor, promoted the progress of human material progress.But simultaneously they can send electromagenetic wave radiation again, and the radiation of particles such as carbonium, a small amount of x ray, pollute the space, and the harm people's is healthy, has become great society public hazards.

For this reason, people have begun the development of radiation-proof fabric and goods thereof very early, and this radiation-proof fabric can adopt the wire weaving or common nonmetal textile material surface plating is realized metallization with metal.The wire cloth serviceability is poor, and shield effectiveness is low, the therefore main metallized method of nonmetal textile material that adopts, wherein metallising processs of using more.

The technology of carrying out chemical silvering on natural fabric was studied in 1970 in the Shanghai City Spinning Science Institute, was developed into conductive fabric, was used to make that electric power all forces to submit and the Work Clothes of anti-microwave.At the end of the seventies, nickel plating on synthetic fiber or the natural fabric is shunk at height by Bayer A.G, makes anti-microwave material and low pressure heating element heater.Contemporaneity has successively begun the research of fabric electroless copper plating method both at home and abroad again.Study fabric chemistry one-step method copper facing or nickel plating technology as Shanghai City Spinning Science Institute in 1980, made copper facing or nickel plating fabric instead of chemical silver coating fabric.Nineteen eighty-three, the copper facing fabric was made with two-step method by Textile Colloge of Shanghai Engineering and Tech. Univ..

In view of making of above-mentioned various plating textile materials, to the protection question of microwave industry with basic solution.But above-mentioned material mainly has been a reflex to microwave, and is then almost nil to the absorption of microwave.They are relatively poor to the effect that stops of the absorption of 30～1000MHz band limits electromagenetic wave radiation, the elimination of carbonium, a small amount of x ray, so can not play reliable and secure protective effect to human body.In order to improve the functional of radiation proof material; increase the thickness of material effective protection aquiclude; state such as Switzerland, Japan successively adopts the material of elements such as high polymer and siliceous, carbon, lead, sodium to mix the blend fibre weaving radiation proof material that is spun into, and this material has the effect of eliminating static, absorbing high light and a small amount of x ray.

Simultaneously, though people have developed various radiation proof materials, these material majorities have single functional, as anti-microwave material, anti-x ray material etc., have certain limitation in the use.As the plating textile material well anti-microwave property (shield effectiveness is up to 40～60 decibels) is arranged, but because the single metal of plating, coating is thinner again, so relatively poor to the barrier force of low frequency electromagnetic radiation and x ray; Increased multiple element in the synthetic fabrics protective materials though polyblend, increased the thickness of effective protection aquiclude, can eliminate fluoroscopic high light and conduction static, poor electric conductivity only can reflect and absorb 1～3 decibel low frequency and high frequency electromagnetic radiation.

It is better to the purpose of this invention is to provide a kind of radiation protection ability, especially stronger to the absorbability of radiation radiation-proof fabric and manufacture method thereof.

The radiation-proof fabric that the present invention proposes improves on one-step method metallization (as silver-plated, copper, nickel etc.) basis and makes, its principal character is its woven, knitted fabric or the supatex fabric of base material for making with the common textile fibers (chemical fibre and natural fabric) and the synthetic fiber blending of polyblending, the metal level that methods such as above-mentioned fabrics comprises that one deck is silver-plated by known chemical, copper facing or nickel plating are coated with, and by one deck with the screen printing method coating, contain multiple usable reflection and absorb seal slurry that the elemental substance of radiation forms layer.

Blend fibre is made by the material blend spinning of elements such as high polymer and siliceous, carbon, lead, sodium, barium, for example adopts the polyster fibre that polyblends, and includes 1～5% carbon black and 5～15% barium sulfate.The consumption of polyster fibre of polyblending is 5～20% of a fiber total amount.

The radiation-proof fabric manufacture method that the present invention proposes comprises will select for use fiber to adopt (or knitting, the non-woven one-tenth cloth) method that mixes, spins, weaves of routine to make fabric, i.e. base material; With base fabrics activation processing at room temperature in 5～10% the stannous chloride aqueous solution, 2～5 minutes processing times; 7～10 minutes processing times are handled in the sensitization at room temperature in 2～5% palladium chloride aqueous solution of activation back; Do silver-plated or copper facing, Nickel Plating Treatment by the known conventional method, thickness of coating is that percent several microns are to tens microns; The fabric that plates metal is carried out wire mark, promptly carry out PLATE SCREAM PRINTING or ROTARY SCREAM PRINTING, 100～120 ℃ of hot settings 2～3 minutes.The seal slurry adopts the acrylate thickener of 40～45% concentration, wherein adds white carbon black 3～10%, carbon black 3～8%, lithium niobate 1～6%, ferrite 2～15%.The material of multiple elements such as promptly siliceous in the seal slurry, carbon, sodium, niobium, lithium, aluminium, iron.White carbon black is the goods that market is buied.

Advantage of the present invention is to have adopted the synthetic fiber that polyblend of some in fabric substrate, has increased the thickness of effective overcoat; Contain multiple elemental substance again in the seal slurry, electromagenetic wave radiation is had absorption function preferably, in 30～1000MHz scope, can decay 40～60 decibels, and can stop portions x ray and have the function of eliminating static simultaneously.

Embodiment 1:

The used fibrous raw material of base fabrics: 54% polyster fibre, 39% cotton fiber, 7% polyster fibre (wherein containing 2% carbon black, 7% barium sulfate) that polyblends;

Fabric is made: spin and be woven into the light and thin type polyester-cotton fabric with common cotton spinning and tatting production line;

Electroless copper: earlier base fabrics is soaked 3 minutes activation processing in 6% the stannous chloride aqueous solution, temperature is a room temperature; Fabric is soaked in 3% palladium chloride aqueous solution again and did the sensitization processing in 8 minutes, treatment temperature also is a room temperature; Carry out copper plating treatment by known method subsequently, at this moment contain the material of elements such as palladium, copper, tin in the coating;

Wire mark: the fabric after the copper facing is made the single face ROTARY SCREAM PRINTING handle, solidified 3 minutes under 100 ℃ of temperature.The seal slurry is the acrylate thickener of 40% concentration, wherein adds:

White carbon black 3%,

Carbon black 4%,

Lithium niobate 3%,

Ferrite 5%.

Embodiment 2:

The used fibrous raw material of base fabrics: 60% polyster fibre, 30% cotton fiber, 10% polyster fibre (wherein carbon black 4%, barium sulfate 12%) that polyblends;

Fabric is made: spin knitting yarn on the common cotton spinning system, and be made into knitted fabric on circular knitting machine;

Chemical nickel plating: earlier base fabrics is soaked 4 minutes activation processing in 8% the stannous chloride aqueous solution, treatment temperature is a room temperature; Fabric is soaked in 4% palladium chloride aqueous solution again and did the sensitization processing in 8 minutes, treatment temperature also is a room temperature; Carry out Nickel Plating Treatment by known method subsequently, contain the material of elements such as palladium, copper, tin in the gained coating;

Wire mark: the fabric after the nickel plating is made the single face PLATE SCREAM PRINTING handle, solidified 2 minutes under 120 ℃ of temperature.The seal slurry adopts the acrylate thickener of 45% concentration, wherein adds:

White carbon black 7%,

Carbon black 7%,

Lithium niobate 5%,

Ferrite 10%.

Claims (4)

1. radiation-proof fabric, comprise the coat of metal that base fabrics, base fabrics surface are coated with chemical plating method, it is characterized in that in the described base material except that common textile fibers, other contains the synthetic fiber that polyblend of fiber total amount 5～20%, polyblending contains 1～5% carbon black and 5～15% barium sulfate in the synthetic fiber, and woven, knitted fabric or the supatex fabric of described base fabrics for being made by the above-mentioned common textile fibers and the synthetic fiber blending of polyblending.

2. radiation-proof fabric as claimed in claim 1, it is characterized in that also having on the described coat of metal seal slurry layer of one deck with multiple elemental substance composition cylinder or the coating of plain net bloth printing method, that contain energy usable reflection and absorption radiation, described multiple element comprises silicon, carbon, sodium, niobium, lithium, aluminium, iron.

3. the manufacture method of radiation-proof fabric as claimed in claim 1, comprise with the chemical plating metal that conventional fiber mixes, spins, weaves, knitting or non-woven one-tenth cloth method is made base fabrics, base fabrics and handling, it is characterized in that before plating is handled, earlier base fabrics at room temperature being made activation processing 2～5 minutes in 2～5% stannous chloride aqueous solution, and at room temperature in 5～10% palladium chloride aqueous solution, do sensitization again and handled 7～10 minutes.

4. the manufacture method of radiation-proof fabric as claimed in claim 3, the fabric that it is characterized in that will plating after plating is handled metal level makes ROTARY SCREAM PRINTING or PLATE SCREAM PRINTING is handled, and the seal slurry is the acrylate thickener of 40～45% concentration, wherein adds:

White carbon black 3～10%,

Carbon black 3～8%,

Lithium niobate 1～6%,

Ferrite 2～15%.