CN105179827A - Acid-base resistant hose and manufacturing method thereof - Google Patents
Acid-base resistant hose and manufacturing method thereof Download PDFInfo
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- CN105179827A CN105179827A CN201510590845.5A CN201510590845A CN105179827A CN 105179827 A CN105179827 A CN 105179827A CN 201510590845 A CN201510590845 A CN 201510590845A CN 105179827 A CN105179827 A CN 105179827A
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- rubber
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- inner lining
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/088—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising a combination of one or more layers of a helically wound cord or wire with one or more braided layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
- B29C59/103—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment of profiled articles, e.g. hollow or tubular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
- F16L11/125—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting non-inflammable or heat-resistant hoses
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses an acid-base resistant hose and a manufacturing method thereof. Low-density polyethylene, ultrahigh molecular weight polyethylene and macromolecular crosslinked polyethylene are used as raw materials, after scientific formulation and rubber pipe vulcanization, a chemical substance with the excellent performance is used for manufacturing a lining film, corona treatment is performed on the bonding faces of the lining film and a rubber pipe at the same time, glass fiber reinforced plastic reinforced fibers with the anti-radiation performance are compounded on the surface layer, and the surface layer of the rubber pipe has the excellent anti-radiation performance. Potential safety hazards caused by ionizing radiation to a delivery pipeline are eliminated, the hose of which the lining film is bonded firmly and which is high in anti-radiation performance, capable of delivering LPG, LNG and strong corrosive chemical solvents and resistant to acid and base is finally manufactured, the rate of the hose for absorbing X-rays, gamma rays and various neutrons can reach 97.5% to 99.5%, and the bonding force of the lining film and the rubber layer reaches 160 N/25 mm to 180 N/25 mm.
Description
Technical field
The present invention relates to the preparation of flexible pipe, particularly a kind of resistance to acids and bases flexible pipe and preparation method thereof.
Background technique
The rubber pipe racks industry of China was through the development of more than 50 years, indispensable supporting effect is served to national economy, especially along with raising and the new diseases of China's Mechanization Level, rubber pipe racks industry constantly and association area interpenetrate, opened up application area and the field of rubber pipe racks, product is widely used in the fields such as coal, metallurgy, cement, harbour, mine, oil, automobile, weaving, light industry, engineering machinery, building, ocean, agricultural, Aeronautics and Astronautics.In recent years, rubber pipe racks industry adheres to the Scientific Outlook on Development, the kind of product, specification, quality obtain lasting, quick, coordinate, healthy development, substantially meet the demand of Domestic market, improve the competitiveness in the international market of product.
At present, China has become rubber pipe racks Production and consumption big country of the world.The rubber pipe racks manufacturing enterprise 812 that the whole nation is of certain scale.According to glue tube belt branch of rubber industry association statistics, the Annual output of current national conveyor belt reaches 3.6 hundred million m
2, V is with output to reach 2,100,000,000 Am, and sebific duct output reaches 6.6 hundred million Bm, and product yield all ranks world's anteposition.2010, China's rubber pipe racks manufacturing income scale reached 223.62 hundred million yuan.Meanwhile, since Eleventh Five-Year Plan, the research and development of China's rubber pipe racks industry specialty are in continuous progress, not only existing rubber pipe racks is improved in sizing material, technique, performance and cost, make it constantly to meet user require and adapt to market demand, and continually develop new product and new technology, fill the domestic gaps, the performance of many domestic glue tube belts is close or reach advanced world standards, and this creates condition for home products squeezes into the international market further.Look into according to prediction network regulation, " 12 " period, Chinese national economy also will keep sustainable development, drive the industrial expansions such as coal, iron and steel, cement, harbour, mine, oil, automobile, weaving, light industry, machinery, this brings good opportunity by giving the development of rubber pipe racks industry, estimates that rubber pipe racks manufacturing marketing scale in 2015 will reach 36,000,000,000 yuan.
Production method has shaping and steam vulcanization (cure) method, and product performance is rubber pipe series product, have oil resistant, acid resistant alkali, the characteristic such as heat-resisting, withstand voltage conveying and attract rubber pipe.Most of rubber pipe has nontoxic, environmental protection, but the Oil/Gas Pipe that ask for something is higher, in rubber material, with the addition of fire retardant, in fire retardant, can minimal effect be produced containing poisonous and harmful substance to human body and air.The characteristic of rubber pipe also has; Physiological inertia, UV resistant, resistance to ozone, high-low temperature resistant (-80 to 300 degree), transparency is high, spring-back force is strong, and compression resistant is the performance such as indeformable, oil resistant, resistance to punching press, acid resistant alkali, wear-resisting, difficult combustion, voltage proof, conduction forever.Its material has numerous species according to the difference of processing technology, and such as NBR nitrile butadiene rubber is widely used in brake vacuum pipe, and the good gel content of oil resistance is high, but resistance to ozone is relatively poor; EPDM ethylene propylene diene rubber is used for automobile water pipe series, as radiator rubber hose, air-conditioner pipe etc.Also has the material that some performances are higher, as AEM acrylic ester high-temperature etc.Often kind of rubber has its characteristic, therefore particularly important on sebific duct the selection of material.Substantially the material of high-grade car use is relatively better, one slightly car, minibus use material poor, as one slightly car at present also have use nitrile butadiene rubber as fuel pipe, current nitrile butadiene rubber is all not suitable for oil-fired system, and substitute chlorohydrin rubber fluorine sebific duct Application comparison extensive.
Disclosed rubber pipe product and preparation method thereof is more: application number be 201220320377.1 Chinese patent disclose a kind of novel hydraulic oil transportation rubber pipe, be specially and a kind of there is antistatic, high-low temperature resistant and rubber transport pipe that is ageing-resistant, corrosion-resistant, flame-proof environmental protection.Transport pipe structure comprises surface layer, mesosphere and internal layer three layers.Surface layer is by having the good ethylene propylene diene rubber of antistatic, high-low temperature resistant, ageing-resistant performance and fabrics of polyester is composited, mesosphere is have the ethylene propylene monomer of anti-flaming function and braided steel wire compound is made, and internal layer is made up of the nitrile butadiene rubber with good oil resistance.Transport pipe has good oil resistance, resistant of high or low temperature, ageing-resistant performance, can increase the service life and rubber pipe structure is simple, mechanical property good, with low cost.Application number be 201510049105.0 Chinese patent disclose a kind of heat-and corrosion-resistant rubber pipe, relate to sebific duct manufacturing technology field, include rubber pipe body, described rubber pipe body comprises the inner rubber layer, hangings lay, middle rubber layer, Coppered Steel Wire braid and the outer rubber layer that set gradually from inside to outside, described inner rubber layer is fluororubber layer, and described middle rubber layer and described outer rubber layer are styrene butadiene rubber layer; Described inner rubber layer, described hangings lay, described middle rubber layer, described Coppered Steel Wire braid are connected with described outer rubber layer sulfuration, compared with prior art, heat resistance and the corrosion resistance of heat-and corrosion-resistant rubber pipe of the present invention increase substantially, and satisfied conveying has the needs of certain corrosive high-temperature gas or liquid.Application number be 201310635893.2 Chinese patent disclose a kind of anti-corrosive rubber tube material, it is characterized in that, feed components is composed as follows according to weight portion: ethylene propylene rubber 30-40 part, solution polymerized butadiene styrene rubber 25-30 part, SRR-16 reclaimed rubber 15-20 part, benzoyl peroxide 1-2 part, NXT silane coupler 3-4 part, nano-graphite 4-7 part, paraffin 7-9 part, talcum 3-4 powder, zine oxide 0.7-0.9 part, zine stearate 0.6-0.8 part, epoxy resin 2-4 part, hexa-methylene-1, the two hyposulfuric acid disodium 0.7-0.9 part of 6-, titanium dioxide 1.5-1.8 part, white oil 1-3 part, antioxidant AT-100.3-0.5 part, Yoshinox BHT 0.8 part, sulphur 2-4 part.Obtained hose material all has good resistance to various polar chemical product such as acid, alkali, oxygenant etc., and not easily aging, low raw-material cost, excellent product performance, have a extensive future.Application number be 200810224959.8 Chinese patent disclose a kind of preparation method of carbon nanotube-natural rubber compound material, it is characterized in that using epoxy natural rubber as the compatibilizer between carbon nano-tube and natural rubber, utilize compatibility excellent between epoxy natural rubber and natural rubber, and the chemical reaction between epoxy natural rubber and carbon nano-tube, improve the dispersion effect of carbon nano-tube in natural rubber, strengthen the interaction between carbon nano-tube and natural rubber, prepare high-performance carbon nanotube-native rubber composite material; The tensile strength of the sulfide film of this composite material is 26 ~ 30MPa, and elongation rate of tensile failure is 750 ~ 900%, 300% stress at definite elongation is 4.0 ~ 6.0MPa.Above-mentioned disclosed patent is mainly improved from performances such as corrosion-resistant, ageing-resistant, resistance to temperature, acid resistant alkali, flame retarding, mechanical strengths, consider that anticorrosive coat comes off the also less of problem, yet there are no the relevant report of relevant radiation-proof rubber pipe, this is that the pipeline of transfer oil and rock gas brings major safety risks.
But for corrosion resistant rubber pipe, inner wall section macromolecular lining film is that corrosion-resistant is crucial, and domestic technique is difficult to reach inner lining film and sebific duct body compact siro spinning technology, easily comes off.Application number be 201180075440.8 Chinese patent disclose the outstanding rubber/plastics composite soft tube of the adhesiveness of a kind of resin layer and rubber layer, as solution, this invention provides a kind of rubber/plastics composite soft tube, there is interior pipe, the standby resin layer as innermost layer of described interior pipe also possesses the rubber layer adjacent with described innermost layer, the material that described resin layer uses is the resin composition containing resin, described resin is at least containing the ionomer possessing carboxylic metallic salt, the material that described rubber layer uses is the rubber composition containing rubber, described rubber is at least containing epoxidezed rubber.This application inventor etc. thinks, why resin layer and rubber layer can bond may be that the epoxy group had due to carboxylic metallic salt and epoxidezed rubber there occurs reaction.Rubber pipe disclosed in this patent does not have radiation-resistant functional equally, and the cohesiveencess of resin layer and rubber layer is still not bery desirable.
Therefore, how to make macromolecular lining film anticorrosive coat cohesiveencess excellent, and there is carried LPG, the LNG of good radiativity and severe corrosive chemical solvent, unremitting pursue that resistance to acids and bases flexible pipe is those skilled in the art.
Summary of the invention
Technical problem solved by the invention is the defect overcoming existing anti-corrosive rubber pipe, with Low Density Polyethylene (LLDPE), ultra-high molecular weight polyethylene (UHMWPE) and high molecular crosslink polyethylene are main raw material, science composite with rubber pipe sulfuration after there is the polyimide of good adhesion performance, tetraethylenepentamine, alpha-sulfo-fatty acid alkyl ester salt, epoxy resin, SBR latex, the chemical substances such as rosin prepare inner lining film, adopt the method for simultaneously inner lining film adhesive surface and rubber pipe adhesive surface being carried out to corona treatment, to strengthen its cohesiveencess, and the glass steel reinforcing fiber with shielding property is compounded with at surface layer, rubber pipe surface layer is made to have excellent anti-radiation, especially the potential safety hazard that the pipeline solving transfer oil and rock gas brings because of ionizing radiation, a kind of inner lining film bonding of final preparation firmly, anti-radiation is strong, LPG can be carried, LNG and severe corrosive chemical solvent, resistance to acids and bases flexible pipe.
In order to achieve the above object, the present invention is by the following technical solutions:
A kind of resistance to acids and bases flexible pipe, comprise rubber pipe body, described rubber pipe body comprises internal layer, mesosphere and surface layer from inside to outside successively;
Described internal layer is oil resistant, anti-corrosion layer;
Described mesosphere is fire-retardant, reinforced layer;
Described surface layer is antistatic, radiation protective layer;
Further, described internal layer is at least formed by sulfuration bonding by ethylene-propylene-diene monomer glue-line and the inner lining film with good adhesion performance;
Described ethylene propylene diene rubber color is ivory;
The material of preparing of described inner lining film mainly to comprise in linear low density of polyethylene (LLDPE), ultra-high molecular weight polyethylene (UHMWPE) and high molecular crosslink polyethylene one or more, and inner lining film thickness is 0.35-0.5mm;
Preferably, described inner lining film is prepared primarily of the raw material of following parts by weight: LLDPE20-40 part, polyvinyl alcohol 20-30 part, UHMWPE15-25 part, high molecular crosslink polyethylene 10-20 part, polyimide 8-10 part, tetraethylenepentamine 9-12 part, alpha-sulfo-fatty acid alkyl ester salt 5-7 part, epoxy resin 5-7 part, SBR latex 4-6 part, rosin 0.5-2.5 part;
Described inner lining film adopts conventional method raw material to be extruded rear blowing, stretching film forming.
Further, described mesosphere is woven compound made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, polypropylene reinforced composite, fire retardant, brass-plated steel wire; Preferred sulfuration bonding;
The polypropylene reinforced composite of described mesosphere at least containing its quality 5-30%;
Preferably, the polypropylene reinforced composite of described mesosphere at least containing its quality 10-18%;
The main raw material of described polypropylene reinforced composite using jute as weft-knitted bi-axial fabric, utilizes weft-knitted biax method of knitting biaxially to serve as a contrast yarn woven fabric to process jute weft knitting, and obtains with the blending of polypropylene short fiber;
Preferably, the preparation method of described polypropylene reinforced composite, comprise the steps: by jute weft knitting biaxially knitted fabric and polypropylene short fiber carry out interval laying, every layer of megila two sides is all covered with a layer polypropylene short fiber; Hotpress is heated to 65 DEG C, the megila of above-mentioned interval laying and polypropylene short fiber are placed on hotpress, be warmed up to 92-96 DEG C, be forced into 8-12MPa, pressurize is warming up to 145-148 DEG C, be warming up to 180-190 DEG C after insulation 5-8min, naturally cool to room temperature after heat-insulation pressure keeping 10-15min and namely obtain polypropylene reinforced composite;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber laying number is 7-11 layer, refers to that biaxially knitted fabric and polypropylene short fiber laying number add up to 7-11 layer in jute weft knitting;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber mass ratio is 1:1.2-2.
Further, described surface layer is made up of ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, anti-static agent, glass steel reinforcing fiber compound; Preferred sulfuration bonding;
The color of described ethylene propylene diene rubber is any one in redness, yellow, green, blueness, grey, black;
The glass steel reinforcing fiber of described surface layer at least containing its quality 8-15%;
Preferably, the glass steel reinforcing fiber of described surface layer at least containing its quality 10-13%;
Described glass steel reinforcing fiber is composite with reinforced plastic glass fibre silk, anti-neutron cellosilk, anti-X, γ-ray cellosilk, lead powder, boron carbide powder science, adopts blending, dipping and drying technique to make;
Described glass steel reinforcing fiber is prepared primarily of the raw material of following components by weight percent: reinforced plastic glass fibre silk 70-75 part, anti-neutron cellosilk 16-20 part, anti-X, γ-ray cellosilk 12-15 part, lead powder 10-15 part, boron carbide powder 6-10 part;
Preferably, the preparation method of described glass steel reinforcing fiber, comprises the following steps:
1) using reinforced plastic glass fibre silk as warp, anti-neutron cellosilk and anti-X, γ-ray cellosilk obtain flat fabric as parallel blending;
2) by unsaturated polyester resin, fire retardant, curing agent and solvent according to mass ratio 100:7-9:1-3:20-25 Homogeneous phase mixing, make resin solution, then add lead powder, boron carbide powder wherein, stir to obtain plumbous boron resin solution;
Further, described solvent is toluene, dimethylbenzene or the mixing of the two;
Further, described fire retardant is aluminium hydroxide;
Further, described curing agent is polyethyleneglycol;
3) by step 1) obtained flat fabric is in step 2) flood 50-70min in obtained plumbous boron resin solution, then dry and obtain glass steel reinforcing fiber;
Further, dipping is simultaneously at electric field strength 20-40kV/cm, and burst length 400-500 μ s, carries out high-pressure pulse electric process under pulse frequency 200-300Hz condition;
Further, described oven dry is 3 stops, and namely inducer temperature 90-110 DEG C keeps 20-40 minute, drying section 120-150 DEG C to keep 30-50 minute, outlet section 70-100 DEG C to keep 20-30 minute.
Another object of the present invention is to provide the preparation method of above-mentioned flexible pipe.
The internal layer of described flexible pipe, mesosphere and surface layer all adopt conventional sulfuration bonding;
As a further improvement on the present invention, for the internal layer of rubber pipe, in order to strengthen the cohesiveencess of inner lining film and rubber layer, respectively corona treatment is carried out to the adhesive surface of inner lining film and rubber layer, then carry out sulfuration bonding: sulfurize temperature is preferably 145-165 DEG C, cure time is preferably 35-150min;
Corona principal utilizes high frequency high voltage at processed frosting coronal discharge (high-frequency ac voltage is up to 5000-15000V/m2), and produce low temperature plasma, frosting is made to produce free radical reaction and that polymer is occurred is crosslinked. surface is roughening and increase its wettability to polar solvent-these gas ions by shocking by electricity and penetrating into by its structure of molecule of surface breakdown of print body, and then by the oxidation of processed surface molecular and polarization, ion electric shock erosion surface, so that increase the adhesive ability on printing stock surface
.
High-power corona treatment used in the present invention is that Nantong Sanxin Plastics Equipment Technology Co., Ltd. produces, model: CW3060, maximum output voltage 15kV, maximum output 60kW, frequency of okperation 15-40KHz;
Described inner lining film adhesive surface corona treatment technique is: power 10-15kW, frequency 19-24KHz; Corona intensity is: 43-48mN/m;
Described rubber layer adhesive surface corona treatment technique is: power 12-16kW, frequency 22-25KHz; Corona intensity is: 45-49mN/m;
After above-mentioned corona process treating, described inner lining film and described rubber layer adhesive surface surface tension significantly improve, surface tension exponential average improves 7-11mN/m, and closely, add described inner lining film and the excellent material binding of described rubber layer, considerably improve the soundness that follow-up inner lining film and rubber layer sulfuration bond, inner lining film not easily comes off with rubber layer.
The flexible pipe prepared through said method can up to arriving 97.5-99.5% to the absorptivity of X, γ-ray and various neutron in nuclear radiation, and the Adhesion force (N/25mm) of inner lining film and rubber layer reaches 160-180.
In the present invention, the bonding strength of inner lining film and rubber layer measures by peeling test the value that bonding strength (unit=N) in units of 25mm width obtains, namely, by inner lining film and the laminating of rubber synusia, press vulcanization 90 minutes at the temperature of 155 DEG C, make the sheet test film that 25mm is wide, use autograph to peel off from inner lining film with the angle of 180 degree with the sheet test film of the peeling rate of 50mm/ minute by acquisition in room temperature (23 DEG C), measure above-mentioned bonding strength.
Beneficial effect:
Resistance to acids and bases flexible pipe of the present invention, with Low Density Polyethylene (LLDPE), ultra-high molecular weight polyethylene (UHMWPE) and high molecular crosslink polyethylene are main raw material, science composite with rubber pipe sulfuration after there is the polyimide of good adhesion performance, tetraethylenepentamine, alpha-sulfo-fatty acid alkyl ester salt, epoxy resin, SBR latex, the chemical substances such as rosin prepare inner lining film, adopt the method for simultaneously inner lining film adhesive surface and rubber pipe adhesive surface being carried out to corona treatment, to strengthen its cohesiveencess, and the glass steel reinforcing fiber with shielding property is compounded with at surface layer, rubber pipe surface layer is made to have excellent anti-radiation, especially the potential safety hazard that the pipeline solving transfer oil and rock gas brings because of ionizing radiation, a kind of inner lining film bonding of final preparation firmly, anti-radiation is strong, LPG can be carried, LNG and severe corrosive chemical solvent, resistance to acids and bases flexible pipe, it is to X in nuclear radiation, the absorptivity of γ-ray and various neutron can up to arriving 97.5-99.5%, the Adhesion force (N/25mm) of inner lining film and rubber layer reaches 160-180.Concrete test effect is shown in embodiment 6-7
Main technical principle is as follows:
1. inner lining film of the present invention may be the introduction of a large amount of unhindered aminas, and with there is the sulfonated alkyl ester salt of wettability and there is the epoxy resin with rubber good adhesion, SBR latex and rosin science composite, the cohesiveencess of high-molecular polythene film is improved, in maintenance Low Density Polyethylene (LLDPE), under the characteristic of ultra-high molecular weight polyethylene (UHMWPE) and the poly excellent material of high molecular crosslink, overcome the defect of its bad adhesion, described inner lining film is made to have good wear resistance, temperature tolerance, corrosion resistance, oil resistance, resistance to acids and bases, under the characteristic conditions such as self lubricity, also have excellent in performance that is rubber bound.It should be noted that, above-mentioned mechanism is the deduction of present inventor etc., even if the mechanism of the present application is not inconsistent with described mechanism, still belongs in the scope of the invention.Also it should be noted that, the above-mentioned performance of described inner lining film is composite, the synergistic effect of its each material component science, not the superposition of simple material function.In fact, described inner lining film compared with prior art really and the vulcanization of rubber bond after there is excellent adhesive property.
2. glass steel reinforcing fiber of the present invention is with reinforced plastic glass fibre silk, anti-neutron cellosilk, anti-X, γ-ray cellosilk, lead powder, boron carbide powder science is composite, adopt blending, dipping and drying technique are made, not only there is light weight high-strength, anti-aging, corrosion-resistant, fire-retardant, sunshade, heat insulation, the premium properties such as insulation, and there is shielding fast neutron, thermal neutron and X, gamma-emitting comprehensive shielded effect, particularly dipping process adopts high-voltage pulse electric factory and office reason, make glass steel reinforcing fiber appropriateness softening, grid structure is abundanter, accelerate lead powder, the seepage velocity of boron carbide powder, enhance dipping effect, improve pickling efficiency, finally enhance the radiation-proof effect of glass steel reinforcing fiber.
3. the manufacture method of polypropylene reinforced composite of the present invention compared with prior art, have chosen the main raw material of jute as weft-knitted bi-axial fabric, can make full use of the excellent mechanical property of jute and resources superiority; And utilizing weft-knitted biax method of knitting biaxially to serve as a contrast yarn woven fabric to process jute weft knitting, low in raw material price, can save production cost, the reinforcement of the environment-friendly composite material of development of new high-quality, does not produce chemical waste, environmentally safe simultaneously.Described polypropylene reinforced composite tensile strength is 104.8-112.6MPa, and flexural strength is 120.1-139.8MPa.
4. preparation method's technique of inventive hose is simple, easy to operate; controllability is good; efficiency is high; be produced on a large scale; on the basis that existing sulfuration bonds; by carrying out corona treatment respectively to the adhesive surface of inner lining film and rubber layer; significantly improve the surface tension of inner lining film and rubber layer adhesive surface; surface tension exponential average improves 7-11mN/m; and closely; add inner lining film and the excellent material binding of rubber layer, considerably improve the soundness that follow-up inner lining film and rubber layer sulfuration bond, inner lining film not easily comes off with rubber layer.
Embodiment
The present invention is described below by specific embodiment.Unless stated otherwise, technological means used in the present invention is method known in those skilled in the art.In addition, embodiment is interpreted as illustrative, but not limits the scope of the invention, and the spirit and scope of the invention only limited by claims.To those skilled in the art, under the prerequisite not deviating from essence of the present invention and scope, the various change carry out the material component in these embodiments and consumption or change also belong to protection scope of the present invention.
The high-power corona treatment used used in following examples 1-5 is produced for Nantong Sanxin Plastics Equipment Technology Co., Ltd., model: CW3060, maximum output voltage 15kV, maximum output 60kW, frequency of okperation 15-40KHz; Other industrial chemicals is commercial commodity.
Embodiment 1
A kind of resistance to acids and bases flexible pipe, comprise rubber pipe body, described rubber pipe body comprises internal layer, mesosphere and surface layer from inside to outside successively;
Described internal layer is formed by sulfuration bonding by ethylene-propylene-diene monomer glue-line and inner lining film;
Described ethylene propylene diene rubber color is ivory;
Described inner lining film is prepared primarily of the raw material of following parts by weight: LLDPE30 part, polyvinyl alcohol 25 parts, UHMWPE20 part, high molecular crosslink polyethylene 15 parts, polyimide 9 parts, tetraethylenepentamine 11 parts, alpha-sulfo-fatty acid alkyl ester salt 6 parts, epoxy resin 6 parts, SBR latex 5 parts, rosin 1.5 parts;
Described inner lining film adopts conventional method raw material to be extruded rear blowing, stretching film forming, and inner lining film thickness is 0.42mm.
Described mesosphere is bondd formed by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, polypropylene reinforced composite, fire retardant, brass-plated steel wire sulfuration;
The polypropylene reinforced composite of its quality 15% is contained in described mesosphere;
The preparation method of described polypropylene reinforced composite, comprise the steps: by jute weft knitting biaxially knitted fabric and polypropylene short fiber carry out interval laying, every layer of megila two sides is all covered with a layer polypropylene short fiber; Hotpress is heated to 65 DEG C, the megila of above-mentioned interval laying and polypropylene short fiber are placed on hotpress, be warmed up to 94 DEG C, be forced into 10MPa, pressurize is warming up to 147 DEG C, be warming up to 185 DEG C after insulation 6min, naturally cool to room temperature after heat-insulation pressure keeping 12min and namely obtain polypropylene reinforced composite;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber laying number is 9 layers, refers to that biaxially knitted fabric and polypropylene short fiber laying number add up to 9 layers in jute weft knitting;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber mass ratio is 1:1.25.
Described surface layer is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, anti-static agent, glass steel reinforcing fiber sulfuration;
The color of described ethylene propylene diene rubber is green;
Described surface layer contains the glass steel reinforcing fiber of its quality 11%;
Described glass steel reinforcing fiber is prepared primarily of the raw material of following components by weight percent: reinforced plastic glass fibre silk 73 parts, anti-neutron cellosilk 18 parts, anti-X, γ-ray cellosilk 13 parts, 12 parts, lead powder, boron carbide powder 8 parts;
The preparation method of described glass steel reinforcing fiber, comprises the following steps:
1) using reinforced plastic glass fibre silk as warp, anti-neutron cellosilk and anti-X, γ-ray cellosilk obtain flat fabric as parallel blending;
2) by unsaturated polyester resin, polyethyleneglycol and toluene according to mass ratio 100:8:2:22 Homogeneous phase mixing, make resin solution, then add lead powder, boron carbide powder wherein, stir to obtain plumbous boron resin solution;
3) by step 1) obtained flat fabric is in step 2) flood 60min in obtained plumbous boron resin solution, simultaneously at electric field strength 30kV/cm, burst length 450 μ s, carries out high-pressure pulse electric process under pulse frequency 250Hz condition; Then dry and obtain glass steel reinforcing fiber;
Described oven dry is 3 stops, and namely inducer temperature 100 DEG C keeps 30 minutes, and drying section 135 DEG C keeps 40 minutes, and outlet section 85 DEG C keeps 25 minutes.
Preparation method.
The internal layer of described flexible pipe, mesosphere and surface layer all adopt conventional sulfuration bonding;
Wherein, for the internal layer of rubber pipe, in order to strengthen the cohesiveencess of inner lining film and rubber layer, respectively corona treatment being carried out to the adhesive surface of inner lining film and rubber layer, then carries out sulfuration bonding: sulfurize temperature 155 DEG C, cure time 90min;
Described inner lining film adhesive surface corona treatment technique is: power 12kW, frequency 21KHz; Corona intensity is: 45mN/m;
Described rubber layer adhesive surface corona treatment technique is: power 14kW, frequency 23KHz; Corona intensity is: 47mN/m;
The flexible pipe prepared through said method can up to 99.5% to the absorptivity of X, γ-ray and various neutron in nuclear radiation, and the Adhesion force (N/25mm) of inner lining film and rubber layer reaches 180.
Embodiment 2
A kind of resistance to acids and bases flexible pipe, comprise rubber pipe body, described rubber pipe body comprises internal layer, mesosphere and surface layer from inside to outside successively;
Described internal layer is formed by sulfuration bonding by ethylene-propylene-diene monomer glue-line and inner lining film;
Described ethylene propylene diene rubber color is ivory;
Described inner lining film is prepared primarily of the raw material of following parts by weight: LLDPE20 part, polyvinyl alcohol 20 parts, UHMWPE15 part, high molecular crosslink polyethylene 10 parts, polyimide 8 parts, tetraethylenepentamine 9 parts, alpha-sulfo-fatty acid alkyl ester salt 5 parts, epoxy resin 5 parts, SBR latex 4 parts, rosin 0.5 part;
Described inner lining film adopts conventional method raw material to be extruded rear blowing, stretching film forming, and inner lining film thickness is 0.35mm.
Described mesosphere is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, polypropylene reinforced composite, fire retardant, brass-plated steel wire sulfuration;
The polypropylene reinforced composite of its quality 10% is contained in described mesosphere;
The preparation method of described polypropylene reinforced composite, comprise the steps: by jute weft knitting biaxially knitted fabric and polypropylene short fiber carry out interval laying, every layer of megila two sides is all covered with a layer polypropylene short fiber; Hotpress is heated to 65 DEG C, the megila of above-mentioned interval laying and polypropylene short fiber are placed on hotpress, be warmed up to 92 DEG C, be forced into 8MPa, pressurize is warming up to 145 DEG C, be warming up to 180 DEG C after insulation 5min, naturally cool to room temperature after heat-insulation pressure keeping 10min and namely obtain polypropylene reinforced composite;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber laying number is 7 layers, refers to that biaxially knitted fabric and polypropylene short fiber laying number add up to 7 layers in jute weft knitting;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber mass ratio is 1:1.2.
Described surface layer is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, anti-static agent, glass steel reinforcing fiber sulfuration;
The color of described ethylene propylene diene rubber is red;
Described surface layer contains the glass steel reinforcing fiber of its quality 10%;
Raw material primarily of the following components by weight percent preparation of described glass steel reinforcing fiber: reinforced plastic glass fibre silk 70 parts, anti-neutron cellosilk 16 parts, anti-X, γ-ray cellosilk 12 parts, 10 parts, lead powder, boron carbide powder 6 parts;
The preparation method of described glass steel reinforcing fiber, comprises the following steps:
1) using reinforced plastic glass fibre silk as warp, anti-neutron cellosilk and anti-X, γ-ray cellosilk obtain flat fabric as parallel blending;
2) by unsaturated polyester resin, aluminium hydroxide, polyethyleneglycol and dimethylbenzene according to mass ratio 100:7:1:20 Homogeneous phase mixing, make resin solution, then add lead powder, boron carbide powder wherein, stir to obtain plumbous boron resin solution;
3) by step 1) obtained flat fabric is in step 2) flood 50min in obtained plumbous boron resin solution, simultaneously at electric field strength 20kV/cm, burst length 400 μ s, carries out high-pressure pulse electric process under pulse frequency 200Hz condition; Then dry and obtain glass steel reinforcing fiber;
Described oven dry is 3 stops, and namely inducer temperature 90 DEG C keeps 40 minutes, and drying section 120 DEG C keeps 50 minutes, and outlet section 70 DEG C keeps 30 minutes.
Preparation method.
The internal layer of described flexible pipe, mesosphere and surface layer all adopt conventional sulfuration bonding;
Wherein, for the internal layer of rubber pipe, in order to strengthen the cohesiveencess of inner lining film and rubber layer, respectively corona treatment being carried out to the adhesive surface of inner lining film and rubber layer, then carries out sulfuration bonding: sulfurize temperature 145 DEG C, cure time 150min;
Described inner lining film adhesive surface corona treatment technique is: power 10kW, frequency 19KHz; Corona intensity is: 43mN/m;
Described rubber layer adhesive surface corona treatment technique is: power 12kW, frequency 22KHz; Corona intensity is: 45mN/m;
The flexible pipe prepared through said method can up to 99% to the absorptivity of X, γ-ray and various neutron in nuclear radiation, and the Adhesion force (N/25mm) of inner lining film and rubber layer reaches 175.
Embodiment 3
A kind of resistance to acids and bases flexible pipe, comprise rubber pipe body, described rubber pipe body comprises internal layer, mesosphere and surface layer from inside to outside successively;
Described internal layer is formed by sulfuration bonding by ethylene-propylene-diene monomer glue-line and inner lining film;
Described ethylene propylene diene rubber color is ivory;
Described inner lining film is prepared primarily of the raw material of following parts by weight: LLDPE40 part, polyvinyl alcohol 30 parts, UHMWPE25 part, high molecular crosslink polyethylene 20 parts, polyimide 10 parts, tetraethylenepentamine 12 parts, alpha-sulfo-fatty acid alkyl ester salt 7 parts, epoxy resin 7 parts, SBR latex 6 parts, rosin 2.5 parts;
Described inner lining film adopts conventional method raw material to be extruded rear blowing, stretching film forming, and inner lining film thickness is 0.5mm.
Described mesosphere is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, polypropylene reinforced composite, fire retardant, brass-plated steel wire sulfuration;
The polypropylene reinforced composite of its quality 18% is contained in described mesosphere;
The preparation method of described polypropylene reinforced composite, comprise the steps: by jute weft knitting biaxially knitted fabric and polypropylene short fiber carry out interval laying, every layer of megila two sides is all covered with a layer polypropylene short fiber; Hotpress is heated to 65 DEG C, the megila of above-mentioned interval laying and polypropylene short fiber are placed on hotpress, be warmed up to 96 DEG C, be forced into 12MPa, pressurize is warming up to 148 DEG C, be warming up to 190 DEG C after insulation 8min, naturally cool to room temperature after heat-insulation pressure keeping 15min and namely obtain polypropylene reinforced composite;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber laying number is 11 layers, refers to that biaxially knitted fabric and polypropylene short fiber laying number add up to 11 layers in jute weft knitting;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber mass ratio is 1:2.
Described surface layer is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, anti-static agent, glass steel reinforcing fiber sulfuration;
The color of described ethylene propylene diene rubber is yellow;
Described surface layer contains the glass steel reinforcing fiber of its quality 13%;
Raw material primarily of the following components by weight percent preparation of described glass steel reinforcing fiber: reinforced plastic glass fibre silk 75 parts, anti-neutron cellosilk 20 parts, anti-X, γ-ray cellosilk 15 parts, 15 parts, lead powder, boron carbide powder 10 parts;
The preparation method of described glass steel reinforcing fiber, comprises the following steps:
1) using reinforced plastic glass fibre silk as warp, anti-neutron cellosilk and anti-X, γ-ray cellosilk obtain flat fabric as parallel blending;
2) by unsaturated polyester resin, aluminium hydroxide, polyethyleneglycol and toluene according to mass ratio 100:9:3:25 Homogeneous phase mixing, make resin solution, then add lead powder, boron carbide powder wherein, stir to obtain plumbous boron resin solution;
3) by step 1) obtained flat fabric is in step 2) flood 70min in obtained plumbous boron resin solution, simultaneously at electric field strength 40kV/cm, burst length 500 μ s, carries out high-pressure pulse electric process under pulse frequency 300Hz condition; Then dry and obtain glass steel reinforcing fiber;
Described oven dry is 3 stops, and namely inducer temperature 110 DEG C keeps 20 minutes, and drying section 150 DEG C keeps 30 minutes, and outlet section 100 DEG C keeps 20 minutes.
Preparation method.
The internal layer of described flexible pipe, mesosphere and surface layer all adopt conventional sulfuration bonding;
Wherein, for the internal layer of rubber pipe, in order to strengthen the cohesiveencess of inner lining film and rubber layer, respectively corona treatment being carried out to the adhesive surface of inner lining film and rubber layer, then carries out sulfuration bonding: sulfurize temperature is preferably 165 DEG C, and cure time is preferably 35min;
Described inner lining film adhesive surface corona treatment technique is: power 15kW, frequency 24KHz; Corona intensity is: 48mN/m;
Described rubber layer adhesive surface corona treatment technique is: power 16kW, frequency 25KHz; Corona intensity is: 49mN/m;
The flexible pipe prepared through said method can up to 98.5% to the absorptivity of X, γ-ray and various neutron in nuclear radiation, and the Adhesion force (N/25mm) of inner lining film and rubber layer reaches 170.
Embodiment 4
A kind of resistance to acids and bases flexible pipe, comprise rubber pipe body, described rubber pipe body comprises internal layer, mesosphere and surface layer from inside to outside successively;
Described internal layer is formed by sulfuration bonding by ethylene-propylene-diene monomer glue-line and inner lining film;
Described ethylene propylene diene rubber color is ivory;
Described inner lining film is prepared primarily of the raw material of following parts by weight: LLDPE20 part, polyvinyl alcohol 30 parts, UHMWPE15 part, high molecular crosslink polyethylene 20 parts, polyimide 8 parts, tetraethylenepentamine 12 parts, alpha-sulfo-fatty acid alkyl ester salt 5 parts, epoxy resin 7 parts, SBR latex 4 parts, rosin 2.5 parts;
Described inner lining film adopts conventional method raw material to be extruded rear blowing, stretching film forming, and inner lining film thickness is 0.4mm.
Described mesosphere is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, polypropylene reinforced composite, fire retardant, brass-plated steel wire sulfuration; The polypropylene reinforced composite of its quality 5% is contained in described mesosphere;
The preparation method of described polypropylene reinforced composite, comprise the steps: by jute weft knitting biaxially knitted fabric and polypropylene short fiber carry out interval laying, every layer of megila two sides is all covered with a layer polypropylene short fiber; Hotpress is heated to 65 DEG C, the megila of above-mentioned interval laying and polypropylene short fiber are placed on hotpress, be warmed up to 92 DEG C, be forced into 12MPa, pressurize is warming up to 145 DEG C, be warming up to 180 DEG C after insulation 8min, naturally cool to room temperature after heat-insulation pressure keeping 15min and namely obtain polypropylene reinforced composite;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber laying number is 9 layers, refers to that biaxially knitted fabric and polypropylene short fiber laying number add up to 9 layers in jute weft knitting;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber mass ratio is 1:1.25.
Described surface layer is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, anti-static agent, glass steel reinforcing fiber sulfuration;
The color of described ethylene propylene diene rubber is blue;
Described surface layer contains the glass steel reinforcing fiber of its quality 8%;
Raw material primarily of the following components by weight percent preparation of described glass steel reinforcing fiber: reinforced plastic glass fibre silk 70 parts, anti-neutron cellosilk 20 parts, anti-X, γ-ray cellosilk 12 parts, 15 parts, lead powder, boron carbide powder 6 parts;
The preparation method of described glass steel reinforcing fiber, comprises the following steps:
1) using reinforced plastic glass fibre silk as warp, anti-neutron cellosilk and anti-X, γ-ray cellosilk obtain flat fabric as parallel blending;
2) by unsaturated polyester resin, aluminium hydroxide, polyethyleneglycol and solvent according to mass ratio 100:7:3:20 Homogeneous phase mixing, make resin solution, then add lead powder, boron carbide powder wherein, stir to obtain plumbous boron resin solution;
Further, described solvent is toluene, dimethylbenzene 1:1 Homogeneous phase mixing in mass ratio;
3) by step 1) obtained flat fabric is in step 2) flood 60min in obtained plumbous boron resin solution, then dry and obtain glass steel reinforcing fiber;
Preparation method.
The internal layer of described flexible pipe, mesosphere and surface layer all adopt conventional sulfuration bonding;
Wherein, for the internal layer of rubber pipe, in order to strengthen the cohesiveencess of inner lining film and rubber layer, respectively corona treatment being carried out to the adhesive surface of inner lining film and rubber layer, then carries out sulfuration bonding: sulfurize temperature 145 DEG C, cure time 35min;
Described inner lining film adhesive surface corona treatment technique is: power 10kW, frequency 24KHz; Corona intensity is: 46mN/m;
Described rubber layer adhesive surface corona treatment technique is: power 12kW, frequency 25KHz; Corona intensity is: 47mN/m;
The flexible pipe prepared through said method can up to 97.5% to the absorptivity of X, γ-ray and various neutron in nuclear radiation, and the Adhesion force (N/25mm) of inner lining film and rubber layer reaches 160.
Embodiment 5
A kind of resistance to acids and bases flexible pipe, comprise rubber pipe body, described rubber pipe body comprises internal layer, mesosphere and surface layer from inside to outside successively;
Described internal layer is formed by sulfuration bonding by ethylene-propylene-diene monomer glue-line and inner lining film;
Described ethylene propylene diene rubber color is ivory;
Described inner lining film is prepared primarily of the raw material of following parts by weight: LLDPE40 part, polyvinyl alcohol 20 parts, UHMWPE25 part, high molecular crosslink polyethylene 10 parts, polyimide 10 parts, tetraethylenepentamine 9 parts, alpha-sulfo-fatty acid alkyl ester salt 7 parts, epoxy resin 5 parts, SBR latex 6 parts, rosin 0.5 part;
Described inner lining film adopts conventional method raw material to be extruded rear blowing, stretching film forming, and inner lining film thickness is 0.4mm.
Described mesosphere is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, polypropylene reinforced composite, fire retardant, brass-plated steel wire sulfuration; The polypropylene reinforced composite of its quality 30% is contained in described mesosphere;
The preparation method of described polypropylene reinforced composite, comprise the steps: by jute weft knitting biaxially knitted fabric and polypropylene short fiber carry out interval laying, every layer of megila two sides is all covered with a layer polypropylene short fiber; Hotpress is heated to 65 DEG C, the megila of above-mentioned interval laying and polypropylene short fiber are placed on hotpress, be warmed up to 92 DEG C, be forced into 12MPa, pressurize is warming up to 145 DEG C, be warming up to 180 DEG C after insulation 8min, naturally cool to room temperature after heat-insulation pressure keeping 15min and namely obtain polypropylene reinforced composite;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber laying number is 9 layers, refers to that biaxially knitted fabric and polypropylene short fiber laying number add up to 9 layers in jute weft knitting;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber mass ratio is 1:1.25.
Described surface layer is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, anti-static agent, glass steel reinforcing fiber sulfuration;
The color of described ethylene propylene diene rubber is black;
Described surface layer contains the glass steel reinforcing fiber of its quality 15%;
Raw material primarily of the following components by weight percent preparation of described glass steel reinforcing fiber: reinforced plastic glass fibre silk 75 parts, anti-neutron cellosilk 16 parts, anti-X, γ-ray cellosilk 15 parts, 10 parts, lead powder, boron carbide powder 10 parts;
The preparation method of described glass steel reinforcing fiber, comprises the following steps:
1) using reinforced plastic glass fibre silk as warp, anti-neutron cellosilk and anti-X, γ-ray cellosilk obtain flat fabric as parallel blending;
2) by unsaturated polyester resin, fire retardant, curing agent and solvent according to mass ratio 100:8:2:23 Homogeneous phase mixing, make resin solution, then add lead powder, boron carbide powder wherein, stir to obtain plumbous boron resin solution;
3) by step 1) obtained flat fabric is in step 2) flood 60min in obtained plumbous boron resin solution, then dry and obtain glass steel reinforcing fiber;
Preparation method.
The internal layer of described flexible pipe, mesosphere and surface layer all adopt conventional sulfuration bonding;
Wherein, for the internal layer of rubber pipe, in order to strengthen the cohesiveencess of inner lining film and rubber layer, carrying out corona treatment respectively, then carry out sulfuration bonding to the adhesive surface of inner lining film and rubber layer: sulfurize temperature is 165 DEG C, cure time is 150min;
Described inner lining film adhesive surface corona treatment technique is: power 13kW, frequency 21KHz; Corona intensity is: 46mN/m;
Described rubber layer adhesive surface corona treatment technique is: power 15kW, frequency 24KHz; Corona intensity is: 48mN/m;
The flexible pipe prepared through said method can up to 98% to the absorptivity of X, γ-ray and various neutron in nuclear radiation, and the Adhesion force (N/25mm) of inner lining film and rubber layer reaches 172.
Embodiment 6 inventive hose inner lining film and rubber layer adhesion strength comparative trial
1. experimental program: with embodiment of the present invention 1-5 for test group, when other condition such as material, Processes and apparatus is identical, only inner lining film is different, and the corrosion-proof lining film best for cohesiveencess forms control group 1; When other condition such as material, Processes and apparatus is identical, corona treatment inner lining film and rubber layer adhesive surface is not only adopted to form control group 2; When other condition such as material, Processes and apparatus is identical, only bonding mode changes into and adopts tackiness agent directly to bond formation control group 3; Then above-mentioned several scheme lower liner film and rubber layer adhesion strength is measured, as table 1:
2. determining method: the bonding strength of inner lining film and rubber layer measures by peeling test the value that bonding strength (unit=N) in units of 25mm width obtains, namely, by inner lining film and the laminating of rubber synusia, press vulcanization 90 minutes at the temperature of 155 DEG C, make the sheet test film that 25mm is wide, use autograph to peel off from inner lining film with the angle of 180 degree with the sheet test film of the peeling rate of 50mm/ minute by acquisition in room temperature (23 DEG C), measure above-mentioned bonding strength.
Table 1. inner lining film and rubber layer adhesion strength contrast test result (unit: N/25mm)
| Project | Test group | Control group 1 | Control group 2 | Control group 3 |
| Embodiment 1 | 180 | 135 | 160 | 175 |
| Embodiment 2 | 175 | 128 | 156 | 172 |
| Embodiment 3 | 170 | 122 | 153 | 165 |
| Embodiment 4 | 160 | 118 | 145 | 152 |
| Embodiment 5 | 172 | 130 | 155 | 160 |
The above results is added up, to the contribution rate that inner lining film excellent adhesion of the present invention contributes is: the thin 20-28% of liner; Corona treatment 9-11%; Bonding mode 2-5%; Show: compared with prior art, the method for inner lining film of the present invention and corona treatment bonding surface is the basic reason producing remarkable bond effect, although bonding mode has certain influence to adhesion strength, not quite, can preferably sulfuration bonding bonding mode.
Embodiment 7 inventive hose shielding property is tested
The flexible pipe prepared with embodiment of the present invention 1-5 and the commercially available anti-corrosive rubber pipe (containing reinforced plastic glass fibre layer) with certain shielding property are subjects, and carry out the test of core spoke transmittance, concrete test data is as table 2
Table 2
| Fast neutron transmittance | Slow neutron transmittance | X, γ-ray transmittance | Thermal neutron transmittance | |
| Commercially available | 14％ | 18％ | 93％ | 95％ |
| Embodiment 1 | 0.1％ | 0.1％ | 0.2％ | 0.1％ |
| Embodiment 2 | 0.2％ | 0.2％ | 0.3％ | 0.3％ |
| Embodiment 3 | 0.3％ | 0.3％ | 0.5％ | 0.4％ |
| Embodiment 4 | 0.5％ | 0.6％ | 0.7％ | 0.7％ |
| Embodiment 5 | 0.2％ | 0.3％ | 0.7％ | 0.8％ |
As seen from the above table, although the commercially available rubber pipe containing reinforced plastic glass fibre layer can absorb most of fast neutron and slow neutron, but almost absorption function is not had to X, γ-ray and thermal neutron, rubber pipe radiation-proof effect is poor, flexible pipe prepared by the present invention has stronger anti-radiation, the absorptivity of X, γ-ray and various neutron in nuclear radiation up to 97.5-99.5%, can be suitable as to the pipeline of transfer oil and rock gas, avoid the potential safety hazard because ionizing radiation brings very much.
Embodiment 8 inventive hose quantitative measurement is tested
By flexible pipe prepared by the embodiment of the present invention 1, test model is got by standard, putting into mass fraction is respectively the sulfuric acid of 30% and the sodium hydroxide solution of 30%, strong acid, highly basic, high temperature corrosion-resisting test are carried out, corrode 72h with this understanding, then take out style and measure physical properties index, result is as table 3:
Table 3 hose segment quantitative measurement result
| Physical property | Embodiment 1 | 30% caustic soda corrosion 72h | 30% sulfuric acid corrosion 72h |
| Tensile strength MPa | 32.25 | 32.18 | 32.11 |
| Elongation rate of tensile failure % | 650.56 | 586.77 | 576.84 |
| Tear strength N/mm | 106.28 | 98.56 | 95.67 |
| Relative volume abrasion loss mm 3 | 68.33 | 70.65 | 71.48 |
| Hardness A | 86 | 85 | 84 |
| Rebound elasticity % | 12 | 16 | 14 |
Above result shows: inventive hose has excellent resistance to acids and bases, corrosion resistance, wear resistance, rebound elasticity, temperature tolerance and tear strength, has excellent physical property.
Claims (10)
1. a resistance to acids and bases flexible pipe, comprises rubber pipe body, it is characterized in that, described rubber pipe body comprises internal layer, mesosphere and surface layer from inside to outside successively; Described internal layer is oil resistant, anti-corrosion layer; Described mesosphere is fire-retardant, reinforced layer; Described surface layer is antistatic, radiation protective layer.
2. resistance to acids and bases flexible pipe as claimed in claim 1, is characterized in that, described internal layer is at least bondd by sulfuration by ethylene-propylene-diene monomer glue-line and inner lining film and forms; The material of preparing of described inner lining film mainly to comprise in linear low density of polyethylene, ultra-high molecular weight polyethylene and high molecular crosslink polyethylene one or more.
3. resistance to acids and bases flexible pipe as claimed in claim 2, it is characterized in that, described inner lining film is prepared primarily of the raw material of following parts by weight: LLDPE20-40 part, polyvinyl alcohol 20-30 part, UHMWPE15-25 part, high molecular crosslink polyethylene 10-20 part, polyimide 8-10 part, tetraethylenepentamine 9-12 part, alpha-sulfo-fatty acid alkyl ester salt 5-7 part, epoxy resin 5-7 part, SBR latex 4-6 part, rosin 0.5-2.5 part.
4. resistance to acids and bases flexible pipe as claimed in claim 1, it is characterized in that, described mesosphere is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, polypropylene reinforced composite, fire retardant, brass-plated steel wire sulfuration; The polypropylene reinforced composite 5-30% of described mesosphere at least containing its quality, preferred 10-18%.
5. resistance to acids and bases flexible pipe as claimed in claim 4, it is characterized in that, the preparation method of described polypropylene reinforced composite, comprise the steps: by jute weft knitting biaxially knitted fabric and polypropylene short fiber carry out interval laying, every layer of megila two sides is all covered with a layer polypropylene short fiber; Hotpress is heated to 65 DEG C, the megila of above-mentioned interval laying and polypropylene short fiber are placed on hotpress, be warmed up to 92-96 DEG C, be forced into 8-12MPa, pressurize is warming up to 145-148 DEG C, be warming up to 180-190 DEG C after insulation 5-8min, naturally cool to room temperature after heat-insulation pressure keeping 10-15min and namely obtain polypropylene reinforced composite;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber laying number is 7-11 layer;
Described jute weft knitting biaxially knitted fabric and polypropylene short fiber mass ratio is 1:1.2-2.
6. resistance to acids and bases flexible pipe as claimed in claim 1, it is characterized in that, described surface layer is bondd made by ethylene propylene diene rubber and Ethylene Propylene Terpolymer tyre cord, anti-static agent, glass steel reinforcing fiber sulfuration; The glass steel reinforcing fiber 8-15% of described surface layer at least containing its quality, preferred 10-13%.
7. resistance to acids and bases flexible pipe as claimed in claim 6, it is characterized in that, described glass steel reinforcing fiber is prepared primarily of the raw material of following components by weight percent: reinforced plastic glass fibre silk 70-75 part, anti-neutron cellosilk 16-20 part, anti-X, γ-ray cellosilk 12-15 part, lead powder 10-15 part, boron carbide powder 6-10 part;
The preparation method of described glass steel reinforcing fiber, comprises the following steps:
1) using reinforced plastic glass fibre silk as warp, anti-neutron cellosilk and anti-X, γ-ray cellosilk obtain flat fabric as parallel blending;
2) by unsaturated polyester resin, fire retardant, curing agent and solvent according to mass ratio 100:7-9:1-3:20-25 Homogeneous phase mixing, make resin solution, then add lead powder, boron carbide powder wherein, stir to obtain plumbous boron resin solution;
3) by step 1) obtained flat fabric is in step 2) flood 50-70min in obtained plumbous boron resin solution, then dry and obtain glass steel reinforcing fiber.
8. resistance to acids and bases flexible pipe as claimed in claim 7, is characterized in that, step 3) flood while at electric field strength 20-40kV/cm, burst length 400-500 μ s, carries out high-pressure pulse electric process under pulse frequency 200-300Hz condition.
9. the preparation method of resistance to acids and bases flexible pipe as described in as arbitrary in claim 1-8, the internal layer of described rubber composite soft pipe, mesosphere and surface layer all adopt conventional sulfuration bonding, it is characterized in that, the adhesive surface of described internal layer inner lining film and rubber layer carries out corona treatment respectively.
10. the preparation method of resistance to acids and bases flexible pipe as claimed in claim 9, it is characterized in that, described inner lining film adhesive surface corona treatment technique is: power 10-15kW, frequency 19-24KHz; Described rubber layer adhesive surface corona treatment technique is: power 12-16kW, frequency 22-25KHz.
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| CN116144119A (en) * | 2023-03-14 | 2023-05-23 | 漯河利通液压科技股份有限公司 | New ethylene-propylene inner glue material for acidizing and fracturing pipe |
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Application publication date: 20151223 |