CN102690456A - Materials for manufacturing high-strength plastic detonating tube - Google Patents
Materials for manufacturing high-strength plastic detonating tube Download PDFInfo
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- CN102690456A CN102690456A CN2011100732190A CN201110073219A CN102690456A CN 102690456 A CN102690456 A CN 102690456A CN 2011100732190 A CN2011100732190 A CN 2011100732190A CN 201110073219 A CN201110073219 A CN 201110073219A CN 102690456 A CN102690456 A CN 102690456A
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Abstract
The invention relates to materials for manufacturing a high-strength plastic detonating tube, which comprise a material HL9680B for manufacturing an external tube of a high-strength plastic composite detonating tube, a material HL001 for manufacturing an internal tube of the high-strength plastic composite detonating tube, a material HL9680C for manufacturing a single-layer tube of the high-strength plastic detonating tube, and a material HL9680S for manufacturing a 'memoryless' external tube of the high-strength plastic detonating tube. Years of domestic application demonstrates that the invention has the following advantages: 1. the materials of the invention have excellent low temperature resistance; 2. the materials of the invention have excellent high-temperature corrosion resistance; 3. the materials of the invention have high tearing strength; even when a detonation transmission distance is great, no breakdown phenomenon of the tube wall of the detonating tube occurs; 4. an inner wall of the detonating tube manufactured by the materials has good gunpowder adsorptivity, and has an adsorption quantity of gunpowder of up to 18 g/m; 5. the materials of the invention have good material processing formability and process stability.
Description
The present invention relates to a kind of macromolecular material of making the high strength plastics primacord, exactly is " material for making high-strength plastic detonating tube ".Comprise individual layer material for making high-strength plastic detonating tube, two-layer compound highstrenghtpiston's primacord inner tube manufactured materials and outer tube manufactured materials, the memoryless manufactured materials of outer tube.
Background of invention: the notion of plastic detonating tube: according to China's ministerial standard, plastic detonating tube is to transmit the detonation wave various industrial detonators that detonate with explosion velocity.The notion a Shock wave conductor that foreign patent proposes is a kind of conductor that transmits shockwave.It is the plastics tubing by outer warp >=3mm internal diameter＜2mm, and pipe internal surface applies with high energy active material (a kind of explosive), and an end connects detonator, and an end connects detonating primer and constitutes.The high energy particle that detonates after (momentum that excites that applies certain intensity) is propagated in pipe with detonation wave (shockwave) front, ignites the other end detonator, and this process is called propagation of explosion, and the speed (m/s) of detonation wave front propagation in pipe is called the explosion velocity of primacord.Its advantage is can be at a distance, detonate with the very little electronic machine of volume. and this plastic detonating tube detonates with former safety fuse or electric firing and compares, and has very outstanding advantage, and it can use in gas, coal dust and mineral dust explosion dangerous environment are arranged; Its detonating velocity fast (2000 meter per second) does not receive distance limit (from several meters to several kms), safe and reliable (anti-electric field during use; Shock-resistant; Waterproof, high-low temperature resistant), explosion transfer performance reliable (50 plastic detonating tubes simultaneously can detonate); Adapting to large-scale blasting operation, is the innovative technology in blasting technology field.Therefore; In recent years; Lot of domestic and international producer imitates making one after another; Because the special working conditions of plastic detonating tube requires and the moulding process requirement, makes the material of making plastic detonating tube become key problem in technology. more domestic bigger R&D institution and producer are studied in succession, but do not see the more report of innovation of relevant this respect now as yet.
Existing plastic detonating tube manufactured materials has four kinds: a kind of is Vilaterm; The 2nd, be the modified plastics of sill with Vestolen PP 7052 (PP); The 3rd, surlyn (ionic polymer of ethylene-acrylic acid copolymer) material; The 4th, the nylon material of Japan's release now.The Surlyn material be U.S. DU PONT company produce without competition be used to make double-layer high strength plastic detonating tube nexine pipe manufacturer material; A kind of ionomer material that is used for plastic detonating tube that the world is unique; The tensile strength of the primacord of making of it, toughness, to the over-all properties of the adsorptivity of medicinal powder, anti-diesel oil etc., do not have other material can be comparable with it, still; High surprising of price reaches 3～40,000 yuan of/ton Renminbi.The R&D institution or the factory of domestic in recent years development plastic detonating tube material; Once used SE (PVC) modification, nylon (PA) modification, Vestolen PP 7052 (PP) modification, high density polyethylene(HDPE) (HPPE) modification and made primacords such as linear low density polyethylene (LLDPE) and new LDPE (film grade); Though obtain some effects; But on the material integrated performance index, all there is shortcoming; Can not well satisfy the ME and the request for utilization of primacord, The selection result promptly has been left three kinds of domestic habitual primacord manufactured materials.1. new LDPE (film grade) (LDPE) material.Be used to make the low-grade plastic primacord, it is low, cheap mainly to get its price.This strength of materials is low, resistance to elevated temperatures is poor, be that non-polar polymer, molecule side chain are many and density is low; The primacord tensile strength of processing with it is low, the shock-resistant destructiveness of tube wall is little, tube wall is few to the medicinal powder adsorptive capacity, medicinal powder is prone to migration, water vapour permeability is big, corrosion-resistant, can only be used for the small-sized explosion small-sized on general medicine hole is little and shallow, powder charge the is few ground, that operating distance is near; 2. the HS primacord of polypropylene modification manufacturing is used for the underground large-scale explosion in ground, medicine hole big (diameter reaches 300mm), dark (reaching 12m), and the can emulsion [explosive, the medicine temperature reaches 80 ℃, requires the primacord tensile strength big; Resistance to elevated temperatures is good, under 80 ℃ of temperature, adds the 4kg pulling force, stretches one minute, and its tensile set wants≤10%; High temperature resistant emulsion [explosive medium (containing an ammonium nitrate and diesel oil) corrosion.The problem that exists is that 15 ℃ of Vestolen PP 7052 second-order transition temperatures have bigger side group (CH on the molecule segment
3), belong to non-polar polymer, though improvement is arranged and difficult to alter character through modification, the primacord made from its shows as; Show as in the temperature environment below 15 ℃ that modulus is big, elongation is little, promptly crisp firmly, resistance to low temperature is bad, it does not possess the kindliness as the Vilaterm owing to side group; That blocks pipe a bit rolls over 180 ℃, and folding line can not be replied deeply, loses the propagation of explosion ability; Say according to the user and to use winter this primacord as spring, when throwing in pipe bounce-back serious, phenomenon because of carelessness fractures.Inside pipe wall is poor to the medicinal powder adsorptive power, and medicinal powder is prone to migration, the explosion transfer performance of influence pipe.3. in recent years, also the someone introduced external HS primacord manufacturing technology, introduced Australia's technology like Shandong company; " memoryless " composite high-strength plastic detonating tube that the production kindliness is good especially; The shortcoming of this primacord is, tensile strength is low, and resistance to elevated temperatures is poor; Not anti-diesel oil can not be used for the emulsion [explosive explosion.Domestic market in the product release of external highstrenghtpiston's primacord is also arranged, like Sweden's product, U.S.'s product.Sweden's product, inner tube are used the Surlyn made, and outer tube is used the modified polypropene manufacturing, and the shortcoming of this product is that resistance to low temperature is bad, folding resistance is bad.U.S.'s product, inner tube are used the Surlyn made, and outer tube is used the modification high-density polyethylene manufacturing, and this product does not have outstanding shortcoming, and use properties is relatively good.In recent years; Domestic also have producer and the big development two-layer compound highstrenghtpiston of R&D institution primacord, but according to the investigator, they lack the primacord manufactured materials; Outer tube is produced high density polyethylene(HDPE) (HDPE) with resin processing plant, details at the back at this specification sheets with this material disadvantage.Inner tube is promptly done inner tube with general coventional type primacord with the LDPE that resin processing plant produces, and test shows; This has problems technically, low 105～110 ℃ of LDPE softening temperature, and thermal denaturation temperature has only 38.8～49.4 ℃ (0.46Mpa); When making that compound primacord is drawn outer tube and in outer tube, inserting inner tube, outer tube during through the head inner chamber temperature than higher (230 ℃～250 ℃), so that inner tube is heated is softening; Inner tube is also simultaneously drafted when the drawing-off outer tube, makes that the ips (standard Φ 1.2mm) within standard diminishes, sometimes in addition inside pipe wall stick together and block pipe orifice; At this moment HS primacord outward appearance does not have any variation; Look nice, still, it has lost the propagation of explosion ability; This HS primacord of the manufacturer production that Here it is has pipe is sold, and the come major cause of " misfire " of user is often arranged.Be not to be invaded by emulsion [explosive corrosion to cause, because the mechanism that is corroded according to macromolecular material, solvent attack plastics, plastics are at first wanted swelling, and pipe wants swelling or distortion just can prove the infiltration of corrosion solvent.Making plastic detonating tube has its unique technology, is one-way drawing, the tubule about drawing-off external diameter ф 3mm, and material technology property will be got well, otherwise the pipe that will break.When making inner tube, in order in pipe, to add the safety of medicinal powder, the extrusion die temperature must not surpass 180 ℃, good manufacturability, and inwall will be got well the medicinal powder adsorptivity, guarantees that dose foot, medicinal powder do not move, and the inner tube material must satisfy these points.
In sum, can see that the plastic detonating tube goods are that comparison is harsh to material requirements, not only require material will have an integrated performance index to satisfy its request for utilization, and this material also will satisfy its processing requirement.The condition that primacord uses is: the condition in severe winter in winter is used in the frigid zone, also under the condition of torrid zone sweltering heat in summer, uses; Use is that the primacord of bearing explosive is hung in the blast hole bottom through 80 ℃ of hot an ammonium nitrate of can and diesel emulsion explosive medium, detonates then.In this process, primacord to bear the corrosion of pulling force, surrounding medium high temperature and high-temperature medium of negative explosive.The performance that primacord should have is: a high and low temperature resistance is good, and two have enough tensile strengths, and three inner layer tube walls are good to the adhesivity of medicinal powder; Four high temperature resistant solvent corrosion property are good, and five tube walls have enough anti-explosion tear strengths, six higher notched Izod impact strength; Avoid the microdefect of pipe under big blasting impact power to cause that the breach sensitivity makes the pipe splitting; Seven wearabilitys are good, and the long distance of construction is drawn when putting primacord and must not be ground away, eight anti-diesel oil corrosion.
Brief summary of the invention: the present invention provides a kind of novel high-strength plastic detonating tube manufactured materials for people; Can satisfy the working conditions requirement and the use properties requirement of primacord with the plastic detonating tube of this kind made; Also be well positioned to meet the detonator manufacturing technique requirement, can overcome all technical problems that the primacord prior art exists fully.Have intensity height, high and low temperature resistance is good, oil-proofness is good, good crooked folding resistance, kindliness can reach " memoryless ", good medicinal powder adsorptivity, good draw orientation property and balanced internal stress reduces anisotropic good stress cracking resistance.
The present invention embodies like this:
1. the compound primacord outer tube of highstrenghtpiston manufactured materials, code name HL9680B
Prescription: 65～75 parts of Vilaterm (high density polyethylene(HDPE)), 20～25 parts of toughner (new LDPE (film grade)), 5～10 parts of expanding materials (linear low density polyethylene), oxidation inhibitor (1010) 0.12;
Plastic detonating tube with this material is processed is compared in the patent " material for making high-strength plastic detonating tube (application number 00123243.6) " of application in 2000 with me; This material is outside guaranteeing original fabulous resistance to low temperature; Resistance to elevated temperatures has raising again; In 80 ℃ of diesel oil aggressive solvents of high temperature, bear under the condition of certain pulling force, still can keep normal use properties; Diesel oil soaks evidence, in 80 ℃ of diesel oil, adds the pressure of 0.3Mpa, does blasting test after soaking 72 hours, and none sends out misfire in every group of 60 samples; Primacord with this made also has good folding quality at low temperatures.
The patent HL9680 of application in 2000 and this patent HL9680B material actual measurement mechanical property are relatively like following table:
2. the compound primacord inner tube of highstrenghtpiston manufactured materials, code name HL001
Prescription: 30～40 parts of linear low density polyethylenes, 50～60 parts of ethylene-acrylic acid copolymers (EAA), 10 parts of plasticized modifiers (new LDPE (film grade)), 1.5～2.0 parts of sodium methylates, methyl alcohol are an amount of.(annotate: methyl alcohol is as the criterion with full solution and methanol sodium);
The characteristics of this material are: the ionomer material that is used for plastic detonating tube with the unique Dupont product surlyn (library) in the world compares; The tensile strength of the primacord of making of it, toughness, to the over-all properties of the adsorptivity of medicinal powder, anti-diesel oil etc., all be higher than the surlyn material; Thermotolerance is more much better than surlyn material; The compound primacord inwall of processing with this material all is better than the surlyn material to medicinal powder adsorptivity, resistance powder transport property and low temperature folding resistance; Fabulous moulding process property is arranged, be better than the surlyn material.
HL001 and surlyn material actual measurement mechanical property are relatively like following table;
3. highstrenghtpiston's primacord mono-layer tube manufactured materials is filled a prescription, (code name HL9680C):
Prescription: 70～75 parts of Vestolen PP 7052,20～35 parts of plasticized modifiers (new LDPE (film grade)), 10～15 parts of expanding materials (ethylene-acrylic acid copolymer), 3～5 parts of polyisobutene, oxidation inhibitor (1010) 0.12.
The HL9680C material of this research has overcome the disadvantage of the HS primacord existence of traditional polypropylene modification manufacturing.The disadvantage that exists is: the user says and uses winter this primacord as spring, rebounds seriously when throwing in pipe, and phenomenon because of carelessness fractures; Inside pipe wall is poor to the medicinal powder adsorptive power, and medicinal powder is prone to migration., poor to the medicinal powder adsorptive power with the primacord inwall that traditional modified polypropene modification is processed, the medicinal powder adsorptive capacity is generally all at 12-16mg/m.According to the foreign data introduction, the minimal effective dose of absorption medicinal powder is 15mg/m.External like product medicinal powder adsorptive capacity can reach 18-25mg/m, and the two compares, and not only the medicinal powder adsorptive capacity is few for the former; And at the edge of validity limit dose, and the passive scope of test data is big, explains that resistance powder transport property is poor; When using this primacord, when special envrionment temperature was relatively lower, medicinal powder was prone to migration; Make propagation of explosion malfunctioning, the primacord explosion transfer performance is unstable, has influenced the safety of explosion.Material HL9680C of the present invention has overcome the disadvantage of above-mentioned existence fully, can significantly improve the resistance to low temperature and the folding resistance of modified polypropene primacord; Can significantly improve the adsorptive power of inside pipe wall to medicinal powder, the adsorptive capacity of medicinal powder is brought up to 18mg/m, and resistance powder transport property is also very good; Also can improve the oil resistance of this kind primacord.
4.: highstrenghtpiston's primacord " memoryless " outer tube manufactured materials, code name HL9680S:
Prescription: 60～70 parts of linear low density polyethylenes, 20～30 parts of plasticized modifiers (new LDPE (film grade)), 10～20 parts of EAA, (1010) 0.12 parts in oxidation inhibitor.
HL9680S is " memoryless " high-strength composite plastic primacord outer tube manufactured materials.Its feature is little, a kind of material of " softness " comparatively of strain-hardening in extension; This kind material can be relaxing rapidly owing to any orientation stress of the caused molecule of moulding process; Therefore; Use this material, cooperate certain process, can be made into the good especially plastic detonating tube of " memoryless " kindliness.This kind primacord resistance to low temperature is good especially; Under-40 ℃ of temperature environments; Still can keep suitable toughness and folding resistance, as block 180 ° of some doublings, 10 times repeatedly; Shallow can the answer of folding line still can keep explosion transfer performance: this kind primacord kindliness is good especially, throws on the ground during use and does not almost have bounce-back. and outward appearance is good, good hand touch, smooth surface are attractive in appearance; Though this kind primacord is soft, and the higher draw tensile strength of ratio is arranged.Producer does inner tube, does outer tube with this material and make the primacord of external diameter Φ 3.2m and have certain oil-proofness and superior environmental stress cracking resistance with the Surlyn material.With this material and Surlyn inner tube material, the primacord of manufacturing and external like product relatively, in equal conditions, comparable size, use same testing method, in city-level scientific research department test result and abroad like product is following:
" memoryless " two-layer compound plastic detonating tube performance relatively
Above-mentioned each formula material is even with mixer mixing, cause particle with the granulation unit.
The performance of each component and effect are as follows in the prescription:
High density polyethylene(HDPE) (HDPE) is a matrix resin.People tried out multiple material to matrix resin, like following table:
PS at normal temperatures or crisp firmly under the low temperature; PVC thermo-sensitivity plastics, the incompatibility detonator manufacturing technique; The PA tensile strength is high, oil-proofness is good, but water-absorbent is big, crystallization rate is slow, and product size is unstable, the deformation effect propagation of explosion, and incompatibility is used in wet environment, and the anti-an ammonium nitrate corrodibility of acid resistance is poor, uses in the incompatibility emulsion [explosive medium; The PC molecular backbone chain has the phenyl ring rigidity big, and melt viscosity is big, and processing and forming technology is not as good as Vilaterm, and not anti-amine corrosion is not suitable in the emulsion [explosive medium and uses.Comparatively speaking, optimum is HDPE.
HDPE intensity is high, second-order transition temperature is low, resistance to low temperature good, resistance to elevated temperatures also can, still; Shortcoming is that snappiness is poor, and crystallization rate is fast, and the phenomenon of making the primacord appearance with it is; Folding resistance is very poor, and tensile strength is not high and very low, and reason is the very fast crystallisation by cooling of parison surface ingress of air that HDPE comes out; The interior still melt state of parison; Drawing-off in this case just makes goods produce a lot of microscopic crystalline defectives, so make goods folding resistance difference and the low phenomenon of intensity on the macroscopic view occur.Therefore, HDPE can only get its length as base-material, keeps away its weak point through modification.HDPE domestic production producer is a lot, like Beijing Yanshan Petrochemical, and Maoming petrochemical industry, Panjin chemical industry group etc.
Plasticized modifier LDPE.Test shows; Do plasticized modifier with elastomerics, rubber etc.; Like EVA (Injecatable EVA Copolymer), SBS (styrene-butadiene-styrene embedding and multipolymer), EPDM (ethylene-propylene rubber(EPR)), BR (along butyric acid) etc., all can significantly reduce the tensile strength of goods, and the stiffness of toughening material is relatively poor; Feel is softer, can not be satisfactory.Mechanism according to elastic body toughening; Hold the island shape and be dispersed in the elastomerics disperse phase absorption shock stress distortion consumed energy in the matrix; Increase the toughness of base material, but tensile stress has but been become the thin spot of tension fracture, thereby reduced the tensile strength of material.
LDPE is the molecule multibranched polymer, and the length side chain has, and is distributed in the toughness that can effectively improve body material in the matrix resin as external phase; It can also reduce the fusing point of HDPE, enlarges high-elastic district, helps the draft process of primacord; Because its molecule higly branched chain can also play the anisotropic effect that minimizing produces when drawing-off.2～4 times of primacord drafting multiples; Seldom during the HDPE drawing-off molecular orientation of side chain, can make goods produce more serious anisotropy for molecule, be easy to cause produce the weak reduction of interfacial force corrosion resistance between tiny crack or the long molecular chain along drawing-off side; This primacord is put in the emulsion [explosive; Can be corroded very soon, solvent can make primacord lose the propagation of explosion ability through tiny crack or the molecule that is corroded crystal boundary excreting dampness medicinal powder.
The LDPE tensile strength is low; Can we get high-molecular weight LDPE, and (melt index 0.2～0.3g/10min) reduce the tensile strength of body material? According to document announcement; When in HPPE, mixing HMW LDPE ratio 60/40 or 50/50; Elongation at break is constant basically, and this moment, a maximum value appearred in tensile strength, and its value is higher than the effect of can complementing each other between the value-differing materials of single component separately.And the rate of permeation of water significantly reduces, and barrier obviously improves.This phenomenon shows that HDPE external phase and LDPE external phase are interweaved on microcosmic, have remedied the other side's crystal defect each other, thereby has improved the tensile strength and the barrier of matrix material.LDPE is domestic to have a lot of manufacturers, like Beijing Yanshan Petrochemical etc.
Compatibilized modifier linear low density polyethylene (LLDPE).When HDPE and LDPE blend, the two is because the molecule side chain differs greatly, and the two crystalline phase consistency is relatively poor, can not form cocrystallization.The present invention when not adding LLDPE, always has 2～3 samples " misfire " (not propagation of explosion) in 60 80 ℃ of oil immersion samples when doing the high temperature diesel-resistant corrosion test; Tens of times test-results is not always the case; When doing the high temperature diesel-resistant corrosion test behind the interpolation LLDPE, invade all ignitions (propagation of explosion) in the sample at 60 80 ℃ of oil, none sample " misfire ", tens of times test-results all is like this
Therefore LLDPE molecule side chain is between HDPE and LDPE, and LLDPE and HDPE crystalline phase and LDPE crystalline phase all are that certain consistency is arranged, and adds the consistency that can improve HDPE and the two crystalline phase of LDPE behind the LLDPE.The stable complete cocrystallization of the feasible one-tenth of blend that the degree of branching is approaching has improved the microcosmic density and the thermotolerance of material, thereby has improved the high-temperature corrosion resistance property and the barrier of material.Domestic production LLDPE producer is a lot, like Beijing Yanshan Petrochemical, and Maoming petrochemical industry, Panjin chemical industry group etc.
EAA (ethylene-acrylic acid copolymer), beauty competition state E.I.Du Pont Company produces 1202HC EAA, acid content 12%, melt index 1.5g/10min, this material polarity is strong, has good cohesiveness.After adding this component, can improve material activity, thereby improve the adsorptive power of material medicine; Simultaneously, because vinylformic acid has two keys, there have the sodium ion existence to produce at segment vinylformic acid position to be crosslinked; Form a kind of ionic polymer, this sodium ion key has and works at normal temperatures and inoperative characteristics under the high temperature, like this; At high temperature be the non-crosslinked structure, can process that the ionic linkage that cools down after the processing plays a role as thermoplastics; Therefore the performance that has cross-linking agent has again improved performances such as tensile strength and toughness.EAA (ethylene-acrylic acid copolymer) and ionic polymer all have stronger polarity, and when containing EAA 10%, material surface can reach 3.5～4g/m to the adsorptive capacity of medicinal powder
2, also be the EAA state at the high temperature ionic polymer.This material Dupont produces, and there is sale the home market.
In HL001 material of the present invention, so being higher than Dupont, the HL001 material property produces the surlyn material, mainly in this material, utilized the principle of " between several kinds of differing materials in the plastics, can have and complement each other ".
Polyisobutene (pis) according to the data introduction, contains pis and processes primacord in material, contain 1%pis, and inside pipe wall is to the adsorptive capacity 2g/m of medicinal powder
2, 2%pis adsorptive capacity 3.5g/m
2, 5%pis adsorptive capacity 9～9.5g/m
2This material Heat stability is good does not decompose under the usual conditions, and not oxidation under the normal temperature and pressure is good with PE, PP consistency.How tame domestic production producer has, like Daqing Petrochemical Complex, and Jinzhou oil six factories etc.
Pis also is a toughner, can make material toughness reinforcing when adding 0.3% left and right sides, can not reduce the tensile strength of material again.
Sodium methylate (CH
3NaO), colourless amorphous powder is to oxygen sensitive.Inflammable.Be dissolved in methyl alcohol or ethanol.Poisonous.Insert polymkeric substance and can sodium ion be provided for material, other composition becomes gas evolution.Domestic production producer is a lot, like Shanghai people pharmaceutical factory, and Taiyuan pharmaceutical factory, Tianjin Zhong Jin pharmaceutical factory etc.
Oxidation inhibitor is 1010.Market is bought.
The primacord that material of the present invention is processed proves that through domestic application for many years following advantage is arranged:
1. material of the present invention has good resistance to low temperature.Process primacord under-40 ℃ of coldcondition with this material, still can keep good toughness and folding resistance, block 180 ° of some doublings of pipe with hand.Repetitiousness is more than 10 times, and folding line is shallow to be recovered, and still can keep normal explosion transfer performance.The no explosion of cold shock test.
2. material of the present invention has good corrosion-and high-temp-resistant property.Process primacord with this material and do the high temperature diesel-resistant test, sample is placed in 80 ℃ of diesel oil, under 0.3MPa pressure, kept 72 hours, do the propagation of explosion test then, at 60 every group none sample of sample " misfire " (full propagation of explosion).Test reaches tens of times, comes to the same thing.
3. material of the present invention has good stretching molecule orientation and self balance internal stress reduces anisotropic ability.Primacord tensile strength height that this kind of usefulness material is processed and the phenomenon that does not have to produce stress cracking along the drawing-off direction.
4. material of the present invention has higher tear-resistant intensity.Primacord with this made has higher anti-bursting strength, has both made the propagation of explosion distance far away, and the tube wall of primacord breakdown phenomenon can not occur yet.
5. material of the present invention has higher notched Izod impact strength.This index can avoid because the microdefect that when primacord is produced, produces like tiny crack, cavity, bubble etc., just produces the responsive phenomenon of breach on macroscopic view when primacord receives the enormous impact bursting force, causes primacord splitting or pipe to fracture.
6. inner tube material HL001 of the present invention and HL9680C material have active preferably.With the primacord inwall of this made excellent adsorption, can reach 18g/m to the adsorptive capacity of medicinal powder to medicinal powder.Excellent adsorption is meant the amount of sticking of medicinal powder and the ability of resistance powder migration.
7. material of the present invention has the good processability that adapts to the primacord ME.The adaptation here has three connotations, the one, materials processed forming, process stabilizing; The 2nd, macromole was easy to orientation when material was drafted, made blasting cartridge that enough tensile strengths arranged; The 3rd, material has the function that self balance is eliminated internal stress, and stress crack resistance performance is good.
Below in conjunction with embodiment the present invention is further specified.
Embodiment one:
Batching: by the prescription batching
65 parts of HDPE
25 parts of LDPE
10 parts of LLDPE
0.12 part in oxidation inhibitor
Batch mixing: top confected materials is put into super mixer mix, temperature reaches 70 ℃ of left and right sides dischargings in the mixing tank.
Granulation: mixed raw material carries out granulation with the dual-screw pelletizer group above inciting somebody to action, and the particulate material that causes is plastic detonating tube manufactured materials product.
Embodiment two:
Batching: by the prescription batching
50 parts of Vestolen PP 7052
6 parts of HDPE
40 parts of LDPE
4 parts of Pis
0.3 part in oxidation inhibitor
Embodiment three;
60 parts of Vilaterm
10 parts of LDPE
30 parts of EAA
1.5 parts of sodium methylates
Methyl alcohol an amount of (being used to dissolve sodium methylate)
Above technology and embodiment are together.
Claims (4)
- The present invention relates to a kind of macromolecular material of making the high strength plastics primacord, exactly is " material for making high-strength plastic detonating tube ".Comprise individual layer material for making high-strength plastic detonating tube, two-layer compound highstrenghtpiston's primacord inner tube manufactured materials and outer tube manufactured materials, the memoryless manufactured materials of outer tube.Technical characterictic of the present invention is:1. highstrenghtpiston's primacord outer tube manufactured materials, code name HL9680BPrescription: 65～75 parts of Vilaterm (high density polyethylene(HDPE)), 20～25 parts of toughner (new LDPE (film grade)), 5～10 parts of expanding materials (linear low density polyethylene), oxidation inhibitor 0.12;
- 2. highstrenghtpiston's primacord inner tube manufactured materials, code name HL001Prescription: 30～40 parts of linear low density polyethylenes, 50～60 parts of ethylene-acrylic acid copolymers (EAA), 10 parts of plasticized modifiers (new LDPE (film grade)), 1.5～2.0 parts of sodium methylates, methyl alcohol are an amount of.(annotate: methyl alcohol is as the criterion with full solution and methanol sodium);
- 3. highstrenghtpiston's primacord mono-layer tube manufactured materials is filled a prescription, (code name HL9680C):Prescription: 70～75 parts of Vestolen PP 7052,20～35 parts of plasticized modifiers (new LDPE (film grade)), 10～15 parts of expanding materials (ethylene-acrylic acid copolymer), 3～5 parts of polyisobutene, oxidation inhibitor 0.12.
- 4.: highstrenghtpiston's primacord " memoryless " outer tube manufactured materials, code name HL9680S:Prescription: 60～70 parts of linear low density polyethylenes, 20～30 parts of plasticized modifiers (new LDPE (film grade)), 10～20 parts of EAA, 0.12 part in oxidation inhibitor.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104804306A (en) * | 2015-02-28 | 2015-07-29 | 河南联塑实业有限公司 | PPR (polypropylene-random) water supply pipe material with high environmental stress cracking resistance and preparation method thereof |
| CN106317553A (en) * | 2016-08-14 | 2017-01-11 | 安徽理工大学 | High-strength cartridge igniter and preparation method thereof |
| CN108395600A (en) * | 2018-02-11 | 2018-08-14 | 上海赛曦新材料科技有限公司 | A kind of heatproof oil-resisting type detonator and preparation method thereof |
| CN108485024A (en) * | 2018-02-11 | 2018-09-04 | 上海赛曦新材料科技有限公司 | A kind of high-strength abrasion-proof type detonator and preparation method thereof |
| CN108530729A (en) * | 2018-03-28 | 2018-09-14 | 中国葛洲坝集团易普力股份有限公司 | Three layers of detonator of low temperature resistant high intensity and preparation method thereof |
| CN108530728A (en) * | 2018-03-28 | 2018-09-14 | 中国葛洲坝集团易普力股份有限公司 | Low temperature resistant high intensity bilayer detonator and preparation method thereof |
| CN108586863A (en) * | 2018-03-28 | 2018-09-28 | 中国葛洲坝集团易普力股份有限公司 | Single layer high reliability detonator and preparation method thereof |
-
2011
- 2011-03-25 CN CN2011100732190A patent/CN102690456A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104804306A (en) * | 2015-02-28 | 2015-07-29 | 河南联塑实业有限公司 | PPR (polypropylene-random) water supply pipe material with high environmental stress cracking resistance and preparation method thereof |
| CN106317553A (en) * | 2016-08-14 | 2017-01-11 | 安徽理工大学 | High-strength cartridge igniter and preparation method thereof |
| CN106317553B (en) * | 2016-08-14 | 2019-06-14 | 安徽理工大学 | High strength detonating tube and preparation method thereof |
| CN108395600A (en) * | 2018-02-11 | 2018-08-14 | 上海赛曦新材料科技有限公司 | A kind of heatproof oil-resisting type detonator and preparation method thereof |
| CN108485024A (en) * | 2018-02-11 | 2018-09-04 | 上海赛曦新材料科技有限公司 | A kind of high-strength abrasion-proof type detonator and preparation method thereof |
| CN108530729A (en) * | 2018-03-28 | 2018-09-14 | 中国葛洲坝集团易普力股份有限公司 | Three layers of detonator of low temperature resistant high intensity and preparation method thereof |
| CN108530728A (en) * | 2018-03-28 | 2018-09-14 | 中国葛洲坝集团易普力股份有限公司 | Low temperature resistant high intensity bilayer detonator and preparation method thereof |
| CN108586863A (en) * | 2018-03-28 | 2018-09-28 | 中国葛洲坝集团易普力股份有限公司 | Single layer high reliability detonator and preparation method thereof |
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Application publication date: 20120926 |