CN1291090C - Continuous preparation method of high-strength high-modulus single-orientation predipping band of polyethylene fiber - Google Patents
Continuous preparation method of high-strength high-modulus single-orientation predipping band of polyethylene fiber Download PDFInfo
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- CN1291090C CN1291090C CN 03158881 CN03158881A CN1291090C CN 1291090 C CN1291090 C CN 1291090C CN 03158881 CN03158881 CN 03158881 CN 03158881 A CN03158881 A CN 03158881A CN 1291090 C CN1291090 C CN 1291090C
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Abstract
The present invention relates to a continuous preparation method of single-orientation presoaking bands made of high-strength high-modulus polyethylene fibres. A presoaking band is made of the high-strength high-modulus polyethylene fibres by uniformly spreading and parallelly ranging and then pasting by adhesive, and then a plurality of layers of presoaking bands are alternately compounded to prepare single-orientation composite materials (UD materials) used as core materials of soft bullet-proof garments. The method is characterized in that fibres can be made into bands by coating the adhesive without lining films so as to cause devices to be greatly simplified; the present invention has the key point that the operation of coating the adhesive is completed through the adoption of rapidly solidified adhesive and a relevant technology; the low tension of a method of uniformly ranging fibres in a single-orientation mode is also one of technologic characteristics.
Description
Technical field
This explanation is the continuous preparation about the high-strength high-modulus polyethylene fiber single-oriented presoaked belts, belongs to the high score subclass.
Background technology
Is a kind of novel composite by high-strength high-modulus polyethylene (HSHM-PE) fiber single-oriented presoaked belts through the staggered composite (hereinafter to be referred as the UD material) that is composited, it is this to be carried out impregnation, drying by HSHM-PE (or aramid fiber, pbo fiber) by even, parallel, straight and upright line up after the continuous band, obtain the continuous preimpregnation band of single orientation fibers, by the multi-layer intercrossed stack of above-mentioned preimpregnation band, compound, make the UD material of respective fiber thus again.
The UD material is originated in twentyth century the eighties U.S. Allied Signal ' s company high-performance fiber technique center, and it is to be used for the defective that ballistic resistant products exists-be fiber at fabric to present case of bending and the space appears in the filling yarn confluce at fabric.The former is unfavorable for the rapid dissipation of stress wave transmission and impact energy; The weak spot that the latter impacts.Fiber is straight and upright even distribution in the single-oriented presoaked belts, and (as: the Stress Transfer speed of HSHM-PE fiber is 12 to the high-speed transfer of both favourable impact stress ripple, 300m/sec) dissipates rapidly along three-dimensional with shock wave.Remedy the fault of construction of traditional ballistic resistant products thus, started novel soft ballistic composite, become one of preferred material of world today's soft bullet-resistant garment.
The technology key of UD material preparation is: (1) filamentary straight and upright, be arranged in parallel and uniform spreading; (2) preparation of adhesive and adhesion process; (3) the staggered stack of multilayer single-oriented presoaked belts is compound.
As everyone knows, commercial fiber product is synnema, it is to pile up bunchy by filament, pile up to filamentary straight and upright for making in the synnema filament, uniform spreading, be arranged in parallel, US 4,916,000 has proposed to sprawl rod by two, fiber is by 40 ° to 250 ° face contacts of radian of rod, it is 0.3-0.6g/d that fiber applies tension force, and the difference of two tension force is controlled at 0.1-0.5g/d, adopts this method to Spectra900, the 118f bundle fiber is sprawled and has been obtained better fruit, sprawl the back thickness of thin layer and only be about 2 times of single fiber diameter, the UD ballistic performance that makes thus obtains to improve.Yet along with the increase of fibre bundle, this effect of sprawling has been subjected to influence, and it both had been subjected to rubbing and has produced the deficiency of static, was subjected to the influence of overtension again, and how under the situation that reduces fiber tension, making and producing enough high-pressure electrostatics is the important channel that solves.
US 4,916,000 and US 5,149,391 technological process of continuous preparation preimpregnation band has been described.For making HSHM-PE coating fibers with glue arranged in a uniform be solidified into the preimpregnation band, before coating fibers with glue, be aided with under lining form and the lining form in fiber arranged its bottom and contact conveyer belt, drive the fiber operation, solidify and need long period and higher solidification temperature to solve poly-ammoniacal emulsions with this.Had the support of lining form easily to make the arrangement uniform fiber keep this state easily, the traction of conveyer belt has avoided fiber to cause evenly distributed destruction in the longitudinal tension force fluctuation again.Such device is comparatively complicated and expensive; but the HSHM-PE fiber behind gluing is very easily sticking mutually with lining form; cause the difficulty of separation; this just the initial production of UD material be to occur with the specification of two layers compound [0 °/90 °] (there is the PE diaphragm on the two sides), by this technology as carrying out four layers compound [0 °/90 °]
2(there is the PE diaphragm on the two sides) specification production is difficulty very.For addressing the above problem preparation satisfactory texture [0 °/90 °]
2The use of adopting quick-setting adhesive to get rid of lining form is the key point that breaks through obstacle.
Summary of the invention
The object of the present invention is to provide a kind of continuous preparation method of high-strength high-modulus polyethylene fiber single-oriented presoaked belts, this method is owing to not needing lining form to make equipment obtain simplifying.
For achieving the above object, preparation method of the present invention is:
1) by the friction body, so that high-pressure electrostatic and uniform spreading on the fiber band, the desirable drawing tension of ratio is≤0.08g/d high-strength high-modulus polyethylene fiber with the drawing tension of≤0.1g/d.The friction body that the present invention adopts is polygon prismatic body or the round with material such as chromium oxide, magnesia or aluminium oxide or its material coating.This friction body quantity can be one, also can be more than two or two.
2) high-pressure electrostatic on the elimination fiber;
3) gluing is in 40-70 ℃ of drying; The adhesive that the present invention adopts is the mixed solvent type adhesive of polystyrene triblock copolymer body or hydrogenated polystyrene triblock copolymer body; Comparatively ideal adhesive is KRATON D-1107, KRATON D-1161, KRATON G-1650 or KRATONG-1651.
The solvent of this adhesive is that solubility parameter (δ) is volatile solvent between the 8.0-8.5, as: benzene, toluene; Chloroform, carbon tetrachloride; Hexane, cyclohexane, chlorination cyclohexane; Diethyl ether, methyl-isobutyl ether; Ethyl acetate, amyl acetate etc.; Different solvents is slightly variant to the soft or hard section dissolving of block copolymer, and the solvent of solvent polymerization body is good with mixed solvent.
The part by weight of adhesive and solvent is 10-40%: 90-60%, and the weight ratio of mixed solvent is an alkane: ethers: ester class=3-10: 0.1-0.5: 1.
Add the composite performance that tackifier can improve the preimpregnation band in adhesive, described tackifier can be terpene resin, synthetic C
5, C
9Resin etc.
4), make the high-strength high-modulus polyethylene fiber single-oriented presoaked belts of single orientation in rolling behind the dryness finalization once more under 40-70 ℃.
5) inter-adhesive in order further to prevent between the fiber, isolate with barrier film during rolling.
The know-why of institute of the present invention foundation is:
According to the polyethylene electrical property as can be known, it is a kind of insulator, as very easily being with negative electricity with suitable material friction, as long as this abrasives has the insulating properties of height, HSHM-PE fiber electrostatic accumulation through friction can be gradually up to more than ten thousand volts, and fiber carries high-pressure electrostatic just can make the fiber uniform spreading.
The HSHM-PE fiber produces the static size with the insulator friction and is directly proportional with normal pressure, when adopting polygon prismatic body, attrition surface is little between rib point and HSHM-PE fiber, normal pressure is big, under the little situation of tension force, produce high-pressure electrostatic, to solve overtension, the filament after sprawling is mutually closed up once more.For making generation static more effective, can be dyanainic friction, more preferably static friction.
For avoiding overtension to cause the width that big tow is sprawled, answer the tension force of controlling fiber traction and the fluctuation of tension force.The fiber drawing tension should be between≤0.1g/d, and more desirable drawing tension scope is≤0.08g/d.
Because it is the volatile ORGANIC SOLVENT MIXTURES of low boiling that adhesive adopts, high-pressure electrostatic can cause dangerous, eliminates so adopt Xelminator to carry out static before gluing.
According to the ballistic requirements of UD material, it is good that adhesive should adopt the elastomer precursor gum stick.Principal mode as adhesive has: three kinds of fusion, emulsion-type and solvent-borne types.Fusion is not suitable for HSHM-PE fiber UD material, and it not only is the HSHM-PE fiber high temperature of unable to bearing, and this adhesive is poor to the wettability of fiber, influences fiber thus and extracts merit improve in composite; Emulsion-type is long hardening time, the surface tension of emulsion-type and HSHM-PE fiber differs greatly, cause infiltration, cementability poor, must add fluorine surfactant and just can overcome, hardening time, long this just adopted the weak point of polyurethane emulsion on the UD manufacture of materials; Solvent type adhesive has under the excellent adhesion performance condition at adhesive and PE fiber, because solvent can be removed fast, has shortened hardening time, and it is attainable removing lining form, thereby change technical process and equipment become possibility.
The birth of polystyrene block copolymer is the selection that the invention provides material of main part, it is the result of hard section, soft section crosslinking points that the intensity of this block copolymer forms, the folding of this crosslinking points looses and forms and can pass through variations in temperature, also can reach by the change of dissolved state.As being dissolved in, this elastomer becomes liquid state in the solvent, can make adhesive fully be impregnated into fiber surface, in case the crosslinking points of soft or hard section recovers to finish gluing after solvent evaporates, as long as therefore choosing the volatility of corresponding solvent and solvent takes into account, can be in tens seconds that fiber adhesion arranged in a uniform is in blocks, thus for getting rid of superfluous heavy drying process and equipment lays the foundation, also may for getting rid of that conveyer belt and lining form provide.Latter's advantage has been got rid of between HSHM-PE fiber and lining form the stripping technology process and has been preparation [0 °/90 °]
2Opened up approach, these important measures make complete machine drive rely on main draw-gear just, and by fiber realize the transmission of complete machine transmission and tractive force, inferior draw-gear speed be adjusted to fiber with fast run-in synchronism, can finish the preparation of continuous preimpregnation band with this.
Because the ballistic requirements of UD material, the HSHM-PE fiber is being born the dominant role of resisting impact energy, adhesive plays the fibro integration effect in the UD material, the function of promptly transmitting and consuming bullet, and the adhesive material of main part need have following performance for this reason: 1. good mechanical and resistance to impact are arranged; 2. with the HSHM-PE fiber good compatibility is arranged, make fiber that the high merit of extracting be arranged in material; 3. compound adhesion strength between fiber single-oriented presoaked belts improves the interlaminar strength of UD material with this.According to above-mentioned main performance requirement, polystyrene triblock copolymer body or its hydrogenated derivatives reflect outstanding performance, as: need not to have high-tensile under the conditions of vulcanization, excellent elasticity and toughness, there is good compatibility to adhere to adhesion strength with polyolefin, becomes one of material selected of UD material adhesive thus.Polystyrene triblock copolymer body is SIS poly-(styrene one isoprene one styrene), as KRATON D-1107, KRATON D-1161; Hydrogenated polystyrene triblock copolymer body is SEBS poly-(styrene-ethylene-butylene-styrene), as KRATON G-1650, KRATON G-1651.
The polystyrene block copolymer can be dissolved among the coordinative solvent, in case the solvent evaporation, it recovers original elastomeric true qualities again, and this is gluing basic principle.
Selective volatilization appropriate solvent system is to make the quick-setting key factor of adhesive.By means of the dissolubility difference of different solvents to the soft or hard section in the block interpolymers, adopting the mixed solvent of maxima solubility to dissolve when dissolving again, can be two or more mixed solvent; Solvent evaporates process behind gluing because volatility differs, can be broken the ratio balance of mixed solvent at once, elastomeric crosslinking points can be formed rapidly, thereby fiber single-oriented state arranged in a uniform is kept.Owing to fast gluingly overcome, lay a good foundation for preparing fiber single-oriented presoaked belts under the no lining form condition thus because of adhesive needs to require long hardening time to finish under fiber has the support of lining form.
Because this destruction that depends on the mixed solvent balance causes the recovery of elastomer crosslinked point fast, initial gluing the finishing that promptly single orientation fibers is arranged so condition of cure is very gentle, finished fast at hot-air 40-70 ℃.Finish initial bonding after, setoff or conveyer belt apparatus not have necessity of existence undoubtedly.
Description of drawings
Fig. 1 is continuous preparation technology's schematic diagram of high-strength high-modulus polyethylene fiber single-oriented presoaked belts;
Among the figure: the 1-high-strength high-modulus polyethylene fiber; The 2-reed; The 3-tension bracket; The 4-friction roller; The 5-Xelminator; The 6-adhesive prepares still; The 7-valve; The 8-measuring pump; 9-gluing point; 10-sprawls roller; 11-stripping glue cutter; The hot path of 12-; 13,14-traction deflector roll; 15-master's carry-over pinch rolls; The 16-finished product is reeled; The 17-barrier film.
The specific embodiment
The present invention is specifically described with following embodiment, but the present invention is not subjected to the limitation of this embodiment condition.Because according to the disclosed condition of summary of the invention part, those skilled in the art can realize the present invention basically, the condition that the present invention provides has a scope, if in this scope, all can obtain be equal to effect, this point also is that those skilled in the art understand easily and grasp.For simplicity's sake, the present invention only provides typical embodiment.
Embodiment:
400f high-strength high-modulus polyethylene fiber (1) (intensity 〉=35g/d with ZTX99, fiber number 2.0-2.5d), by 3 reeds/centimetre reed (2) and tension bracket (3), rub with polygon prismatic friction roller (4) afterwards, this friction roller (4) can be used chromium oxide, magnesia or alumina material system, also the top layer of the roller that can make at other materials applies one deck chromium oxide, magnesia or alumina material, friction roller (4) top layer that present embodiment adopts is coated with magnesia, to produce high-pressure electrostatic, make the fiber uniform spreading.The fiber that carries high-pressure electrostatic adopts Xelminator (5) to carry out after static eliminates before gluing, be transferred to upper glue roller (10), in gluing point (9) gluing, the adhesive that present embodiment adopts is that KRATON G-1650 is dissolved in mixed solvent (hexane: diethyl ether: ethyl acetate=5: 0.5: 1 by weight 15%, add terpene resin and antioxidant again), make gluing even with stripping glue cutter (11) after the gluing, arrangement uniform fiber behind the gluing, by hot path (12), 55 ℃ are carried out drying, making fiber arranged in a uniform give matrix fixes, again through 55 ℃ of laggard draw-gears (15) of becoming owner of of further dryness finalization, form the HSHM-PE fiber preimpregnation band (38g/m of single orientation thus afterwards
2).For preventing mutual adhesion, wind-up roll (16) is preceding entering, and makes it mutual isolation with barrier film (17).
It is compound that the HSHM-PE fiber preimpregnation band of above-mentioned gained is carried out quadrature.They two layers staggered, also can be four layers staggered, resulting product structure is corresponding to be [0 °/90 °] or [0 °/90 °]
2, for protection product and extraneous friction damage, the UD material both sides composite protection film as shellproof usefulness makes surface density (AD) and is about 160g/m
2The UD material.
Bulletproof effect: with 40 layers, 450mm * 450mm AD=160g/m
2It is on the target holder of clay that the neat stack of UD material places backing, adopts 51 formula balls, by the 662E V of U.S. army
50Test standard records V with 51 formula Long Barrels, 51 formula balls (lead for retractable pencil bullet)
50〉=490m/s.
With 45 layers of 450mm * 450mm AD=160g/m
2It is on the target holder of clay that the neat stack of UD material places backing, with above-mentioned similarity condition and mode, records V
50=578.5m/s.
Claims (6)
1, a kind of continuous preparation method of high-strength high-modulus polyethylene fiber single-oriented presoaked belts the steps include:
A) high-strength high-modulus polyethylene fiber by the friction body, makes high-pressure electrostatic on the fiber band and uniform spreading with the drawing tension of≤0.1g/d;
Described friction body is the polygon prismatic body or the round of chromium oxide, magnesia or aluminium oxide material or its material coating;
B) high-pressure electrostatic on the elimination fiber;
C) adhesive coating is in 40-70 ℃ of drying;
Described adhesive is the mixed solvent type adhesive of polystyrene triblock copolymer body or hydrogenated polystyrene triblock copolymer body;
The solvent of this adhesive is that solubility parameter (δ) is volatile solvent between the 8.0-8.5;
The weight ratio of this adhesive and solvent is 10-40%: 90-60%;
D) in rolling behind the dryness finalization once more under 40-70 ℃, promptly make the high-strength high-modulus polyethylene fiber single-oriented presoaked belts.
2, preparation method as claimed in claim 1 is characterized in that, described drawing tension is≤0.08g/d.
3, preparation method as claimed in claim 1 is characterized in that, described adhesive is KRATOND-1107, KRATON D-1161, KRATON G-1650 or KRATON G-1651.
4, preparation method as claimed in claim 1, it is characterized in that, the solvent of described adhesive be benzene, toluene, chloroform, carbon tetrachloride, the sixth of the twelve Earthly Branches alkane, ring alkane in the sixth of the twelve Earthly Branches, chlorination ring alkane in the sixth of the twelve Earthly Branches, diethyl ether, methyl-isobutyl ether, ethyl acetate and amyl acetate in two or more mixed solvent;
The weight ratio of mixed solvent is an alkane: ethers: ester class=3-10: 0.1-0.5: 1.
5, preparation method as claimed in claim 1 is characterized in that, the friction body among the described step a can be more than one or two and two.
6, preparation method as claimed in claim 1 is characterized in that, isolates with barrier film between the preimpregnation band during rolling in the described steps d.
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| CN 03158881 CN1291090C (en) | 2003-09-16 | 2003-09-16 | Continuous preparation method of high-strength high-modulus single-orientation predipping band of polyethylene fiber |
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| CN 03158881 CN1291090C (en) | 2003-09-16 | 2003-09-16 | Continuous preparation method of high-strength high-modulus single-orientation predipping band of polyethylene fiber |
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| CN1291090C true CN1291090C (en) | 2006-12-20 |
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Cited By (2)
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| CN101525848B (en) * | 2008-03-07 | 2011-08-17 | 宁波荣溢化纤科技有限公司 | Production line for polyethylene fiber single-oriented presoaked belts |
| CN102535021A (en) * | 2010-12-13 | 2012-07-04 | 宋锋 | Process for manufacturing continuous non-woven cloth and cross cloth with more than two layers |
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2003
- 2003-09-16 CN CN 03158881 patent/CN1291090C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101525848B (en) * | 2008-03-07 | 2011-08-17 | 宁波荣溢化纤科技有限公司 | Production line for polyethylene fiber single-oriented presoaked belts |
| CN102535021A (en) * | 2010-12-13 | 2012-07-04 | 宋锋 | Process for manufacturing continuous non-woven cloth and cross cloth with more than two layers |
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| CN1537988A (en) | 2004-10-20 |
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Denomination of invention: Continuous preparation of single orientation prepreg for high strength and high modulus polyethylene fiber Effective date of registration: 20201217 Granted publication date: 20061220 Pledgee: Hunan Linli rural commercial bank Limited by Share Ltd. Pledgor: HUNAN ZHONGTAI SPECIAL EQUIPMENT Co.,Ltd. Registration number: Y2020430000043 |
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