CN102330192A - Preparation method of industrial active polyester fiber - Google Patents
Preparation method of industrial active polyester fiber Download PDFInfo
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- CN102330192A CN102330192A CN2011102377812A CN201110237781A CN102330192A CN 102330192 A CN102330192 A CN 102330192A CN 2011102377812 A CN2011102377812 A CN 2011102377812A CN 201110237781 A CN201110237781 A CN 201110237781A CN 102330192 A CN102330192 A CN 102330192A
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Abstract
The invention relates to preparation of polyester fibers, and aims at providing a preparation method of an industrial active polyester fiber. In the preparation method, in a polyester fiber spinning stretching process, active adhesive is sprayed to the surface of a heat-state polyester fiber filament, and is heated at a temperature of between 150 and 170 DEG C to obtain an industrial active polyester fiber product, wherein the active adhesive is a uniform and stable mixed solution formed by dissolving epoxy compound and blocked polyisocyanate in polyoxyether. According to the preparation method, an active film is formed on the surface of the reacted polyester fiber, good adhesive function is endowed to the fiber, so that the fiber is easier to bind with RFL (resorcineformaldehyde-latex), and the adhesive force of the polyester fiber and rubber is increased; the production process is simplified, only once impregnation is required, and post-processing cost is reduced; and large reformation to a conventional system is not required, only the active adhesive is required to be sprayed to the surface of the heat-state polyester fiber filament to obtain the active polyester fiber product. The active polyester fiber has the characteristics of polyester fibers and the good adhesive property of rubber.
Description
Technical field
The present invention relates to a kind of preparation of polyester fiber, particularly a kind of industrial active polyester fiber preparation method that is more suitable for rubber adhesion.
Background technology
For the intensity that increases rubber and limit its distortion, all must make skeleton with textile material or metal material like the overwhelming majority's such as pneumatic tire, sebific duct, part for rubber dam, adhesive tape, rubber overshoes, adhesive plaster rubber.Rubber to the performance requirement of framework material is, intensity is high, and percentage elongation is suitable, and DIMENSIONAL STABILITY is good; Flex fatig resistance property and good heat resistance, hygroscopicity is little, and is good with the cohesiveness of rubber; Corrosion resistance and flame resistance are good, and be cheap and relative density is little, favourable lightweight etc.
Rubber framework material mainly contains steel wire, polyamide fibre, terylene, high tenacity yarn and various staple fibre, and is according to the rubber performance demands, also increasingly high to the performance requirement of framework material.Because gluings such as traditional framework material cotton, polyvinyl, viscose glue are good but intensity is low; Polyamide fibre intensity is high, ABRASION RESISTANCE is good but easy deformation, poor dimensional stability; Polypropylene fibre gluing performance is bad and not ageing-resistant; So polyester fiber as the substitute development rapidly.Because of advantage such as its high strength, high-modulus, wear-resisting, ageing-resistant, acid and alkali-resistance and price be low, the application in rubber industry obtains bigger development.
Usually in the adhesion process of polyester fiber and rubber, use RFL (RFL) as adhesive.But,, generally to bathe impregnation, complex procedures, back processing cost height through two with the rubber adhesion poor effect because polyester fiber degree of crystallinity is high, good stability.
For addressing this problem; The main energy of research concentrates on the spinning oil both at home and abroad; Comprising companies such as German Sima, Japanese Song Ben, all is the composition that on oil formula, increases with rubber adhesion, and the impregnation effect can take a favorable turn like this; Bathe the problem of impregnations but can not fundamentally solve two, and in spinning process, also can occur being fuming, problem such as coking.Up to the beginning of this century, the Sima chemical production agent of a kind of activation silk oil, the impregnation problem is able to take on a new look, but its service condition is harsh, and costs an arm and a leg.
If can better solve and the rubber adhesion problem, shorten the impregnation flow process of downstream user, reduce its processing cost, with the application space that can be able to expand polyester fiber greatly.
Summary of the invention
The problem that the present invention will solve is, overcomes deficiency of the prior art, puies forward a kind of industrial active polyester fiber preparation method.
The production of industrial active polyester fiber is adopted to have much light PET polyester slice, usually behind crystallization in advance, solid-phase tack producing; The polyester slice molecular weight increases, and through the screw rod melt extruded, by measuring pump melt is fed to filament spinning component; Form the melt thread through spinnerets; Through cold wind strand is solidified, the multistage hot-rolling in back that oils stretches, and gets into the automatic winding-machine coiling and molding then again.
Traditional industrial is used for rubber framework material with polyester fiber, pass through fiber is carried out twice impregnation processing, and ability and rubber adhesion have so just increased manufacturing procedure.Thinking of the present invention is: the production method that a kind of new functional polyester fiber is provided: in the spin-drawing process; Attaches a kind of active viscose glue to the surface spray of hot strand; Make itself and pet reaction, fiber surface forms the layer of active film, gives the fiber specific function; Be easy to combine, increase the bonding force of fiber and rubber with RFL.Therefore, having reduced back road impregnation operation sets about.
So, being the technical solution problem, solution of the present invention is:
A kind of industrial active polyester fiber preparation method is provided, and is in the spin-drawing process of polyester fiber, attaches active viscose glue to hot polyester fiber strand surface spray, and through 150～170 ℃ of temperature heating, obtains industrial active polyester fiber product; Said active viscose glue is that epoxide and blocked polyisocyanate are dissolved in formed uniform and stable mixed liquor in the polyoxy ether; The mass percentage content of each component is: epoxide 42～48%, blocked polyisocyanate 3～8%; Polyoxy ether 45～55%.
Among the present invention, said epoxide is: the mixture of the arbitrary proportion of one or more in poly glycidyl ester, the fatty alcohol ethoxylate.
Among the present invention, said blocked polyisocyanate is one or more the mixture of arbitrary proportion in the polyisocyanates of caprolactam sealing.
Among the present invention, also comprise the step of the active polyester fiber product of strand shape being carried out coiling and molding.
Compared with prior art, the invention has the beneficial effects as follows:
Reacted polyester fibre surface forms the layer of active film, can give fiber better fusible function, is easier to and RFL (RFL) combination, increases the bonding force of polyester fiber and rubber.The present invention has simplified production process through the application of active viscose glue, only needs soaking (RFL), has reduced back processing cost.The more important thing is that the processing cost of the present invention own is low, existing system need not big transformation, only need in spinning process, to attach active viscose glue, can obtain the active polyester fiber product to the spray of polyester fiber strand surface.This active polyester fiber had both had all characteristics of polyester fiber, had again and rubber adhesion characteristic preferably, can be used in the subsequent technique the further processing with rubber adhesion.
Description of drawings
Fig. 1 is the adhesion mechanism sketch map between indusrial polyester fiber among the present invention and the rubber.
Fig. 2 is the reaction sketch map of epoxide and polyester molecule.
Fig. 3 is a reaction sketch map from acylamino-to polyester molecule that introduce.
Fig. 4 is the flow process chart of active polyester fiber among the present invention.
Fig. 5 connects sketch map for the process equipment of active polyester fiber among the present invention.
Fig. 6 leads the combination machine sketch map for the indusrial polyester fiber spins.
Fig. 7 has used the spray of active viscose glue to set up the spinning that is equipped with and stretch oneself and yawn winding combined machine sketch map.
Fig. 8 is the active tendency chart of polyester fiber under the different temperatures.
Reference numeral is among the figure: 1 rubber, 2 polyester fibers, 3 RFLs, 4 active viscose glues, 5 bar guides, 6 glue pumps, 7 stir pump, 8 one-component measuring pumps, 9 new component adding sets, 10 activity gel liquid baths, the active glue recover of 11 negative pressure, 12 oil spout lips, 13 heating and incubator, 14 indusrial polyester fibers, 15 indusrial polyester fiber packages.
The specific embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention is described.
Active viscose glue among the present invention is that epoxide and blocked polyisocyanate are dissolved in formed uniform and stable mixed liquor in the polyoxy ether; The mass percentage content of each component is: epoxide 42～48%, blocked polyisocyanate 3～8%; Polyoxy ether 45～55%.Wherein, said epoxide is: the mixture of the arbitrary proportion of one or more in poly glycidyl ester, the fatty alcohol ethoxylate; Blocked polyisocyanate is one or more the mixture of arbitrary proportion in the polyisocyanates of caprolactam sealing.
Below realization principle of the present invention is described, wherein, polyester fiber is an example with PET (PETG), and uses the polyisocyanates of caprolactam sealing:
1, the confirming of monomer in the active viscose glue:
Active viscose glue will have stronger activity, and epoxide is the target of at first considering, through theory analysis and a large amount of tests, the mixture of last preferred poly glycidyl ester and fatty alcohol ethoxylate is as activating agent.In order to reach better effect, added blocked polyisocyanate again.Because selected isocyanates water at normal temperature dissolubility is not good, mobile bad for preventing in the spray additive process, select polyoxy ether to make diluent, solved the uniform and stable property problem of active viscose glue.
Epoxide in the active viscose glue has stronger activity at a certain temperature; Roughly as shown in Figure 2 with the reaction of PET molecule; Wherein I representes the carboxyl reaction with PET, and II representes and the PET carbonyl forms stronger hydrogen bond, III represent PET right-dispersion and the absorption of CH2CI.Form combining of similar hydrogen bond with the carbonyl of PET, make firm the combining of epoxide and polyester macromolecule, thereby introduced active epoxide group.The active epoxy base of epoxide with the PET macromolecular reaction after produce a large amount of polar group-OH.
The blocked isocyanate selection is most important in addition, consider as far as possible deblocking at a lower temperature, discharges activity-NCO group, also will consider the pollution problem in spinning process.Prior, its dispersiveness of considered, i.e. stability in mixed glue solution.Its solid content is reduced, the liquid phase of a stable homogeneous is arranged, be more convenient for combining with the strand of high-speed cruising.Through contrast test, the polyisocyanates of caprolactam sealing that the present invention is preferred, and make solvent with polyoxy ether, make mixed liquor more evenly, stablize.
The polyisocyanates of caprolactam sealing is separated under 150～170 ℃ temperature and is honored as a queen, discharge-the N=C=O group, this group be easy to epoxide and PET-the OH base ,-the COOH radical reaction.PET itself has hydroxyl and carboxyl, adds the hydroxyl that reaction increases with epoxide, introduces acylamino-(as shown in Figure 3) again.
Through after the above-mentioned reaction, the surface of PET has increased a lot of active groups, and like hydroxyl, acylamino-etc., and these groups are easy to combine with RFL (RFL), for condition has been created in the vulcanization of rubber after this.
In active viscose glue, the addition of blocked polyisocyanate has certain influence to the reflection effect of polyester fiber; Through experiment, when addition (mass ratio) surpassed 8%, it is more that-NCO group discharges; Fiber-reactive is strong excessively, with the RFL over cure, will influence the bonding of RFL and rubber; When addition (mass ratio) when being less than 3%, activation effect is not obvious.
2, the proportioning between each component of the active viscose glue of optimization
The content of the proportion relation between each component, particularly isocyanates, the directly influence and the active effect of polyester fiber is one group of contrast test doing below:
Through a large amount of experiments, confirm epoxide 42～48%, blocked polyisocyanate 3～8%; Polyoxy ether 45～55% is preferred compositions proportioning of the present invention.
3, prepare accordingly and spray to set up and be equipped with:
The flow process chart of active polyester fiber is as shown in Figure 4 among the present invention, and the process equipment of active polyester fiber connects as shown in Figure 5.
Because blocked polyisocyanate dispersiveness at normal temperatures is not very good, and is prone to discharge activity-NCO group under the high temperature, can reduce reaction chance with before fiber contacts just not reacting with epoxide with polyester fiber.Therefore, the present invention's spray of selecting to carry out active viscose glue at normal temperatures attaches and circulation.But, though added solvent polyoxy ether, also separate out easily, so in the glue groove, increased stirring pump 7.And, the adding set of each component is directly joined with activity gel liquid bath 10, make active viscose glue accomplish preparation after, attach spraying as far as possible at short notice, minimizing particle occurs and separates out phenomenon, guarantees that the whole active viscose glue circulatory system is uniform and stable.
In the conventional indusrial polyester fibre manufacturing technique, heat roller temperature is higher, and the coking easily at high temperature of active viscose glue influences spinning, causes lousiness to increase.But active viscose glue is competence exertion effect at a certain temperature also, does contrast test (as shown in Figure 6) on the combination machine through spinning at the indusrial polyester fiber to lead, and bonding effect is preferably but hot-rolling is prone to coking as a result in prestressed position (A place among Fig. 6); One-level hot-stretch position (B place among Fig. 6) coking phenomenon improves but bonding effect is poor slightly, coiling front position (C place among Fig. 6) no coking phenomenon but bonding effect is the poorest.
For addressing this problem, the present invention attaches system in spray to set up heater, with thorough solution coking problem and bonding effect problem.This device efficiently solves active viscose glue to be attached the spray of high speed strand, and the fiber with the high-speed cruising of active viscose glue is among the specific temperature environment, fully reacts the necessary condition of having created for active viscose glue and polyester fiber.
Active viscose glue spray of the present invention is set up seeing in appearance of being equipped with and is structure as a whole, the actual two parts up and down that divide.Top is that the glue spray attaches device, and the bottom is a heating constant-temperature equipment.Two parts are concentrated in together, and the centre is separated by dividing plate, with an insulating cover integrally closed, can play like this and save the space, and the coiling spinning-in operation is convenient, and the gas of generation can be concentrated recycling, and high insulating effect makes activated fibre uniform and stable.
During production, the polyester fiber strand is from top to bottom successively through last bar guide, oil spout lip 12, negative pressure activity glue recover 11, following bar guide, heating and incubator 13.The strand that has adhered to active viscose glue promptly becomes activated fibre after heat, pass through high-speed winding again, and heat still keeps to a certain degree in package, the surface active viscose glue can also continue and PET between reaction.
Fig. 7 has used the spray of active viscose glue to set up the spinning that is equipped with and stretch oneself and yawn winding combined machine, and D place equipment is spray and sets up and be equipped with among the figure.
4, the rational reaction temperature of control is that can the decision spinning be carried out smoothly, and the key of the final active effect of fiber:
It is not thorough that reaction temperature is spent low priming reaction, the active DeGrain of fiber, and reaction temperature is too high, directly influences the inherent indexs such as xeothermic contraction, elongation of strand, even phenomenons such as the broken end moulding is bad occur; Draw tendency chart shown in Figure 8 through experiment, can find out active DeGrain under the low temperature, but surpass uniform temperature, active effect changes little, and bigger to the spinning effect influence, final rubber adhesion effect is not quite similar result of the test such as following table:
Through a large amount of experiments, confirm that the reaction temperature in the heating constant-temperature equipment is 150～170 ℃, the active polyester fiber product is active best under this temperature conditions.
Claims (4)
1. industrial active polyester fiber preparation method is in the spin-drawing process of polyester fiber, attaches active viscose glue to hot polyester fiber strand surface spray, and through 150～170 ℃ of temperature heating, obtains industrial active polyester fiber product; Said active viscose glue is that epoxide and blocked polyisocyanate are dissolved in formed uniform and stable mixed liquor in the polyoxy ether; The mass percentage content of each component is: epoxide 42～48%, blocked polyisocyanate 3～8%; Polyoxy ether 45～55%.
2. preparation method according to claim 1 is characterized in that, said epoxide is: the mixture of the arbitrary proportion of one or more in poly glycidyl ester, the fatty alcohol ethoxylate.
3. preparation method according to claim 1 is characterized in that, said blocked polyisocyanate is one or more the mixture of arbitrary proportion in the polyisocyanates of caprolactam sealing.
4. according to the preparation method described in any one of the claim 1 to 3, it is characterized in that, also comprise the step of the active polyester fiber product of strand shape being carried out coiling and molding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110237781 CN102330192B (en) | 2011-05-23 | 2011-08-18 | Preparation method of industrial active polyester fiber |
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| CN201110133186.4 | 2011-05-23 | ||
| CN201110133186 | 2011-05-23 | ||
| CN 201110237781 CN102330192B (en) | 2011-05-23 | 2011-08-18 | Preparation method of industrial active polyester fiber |
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| CN102330192A true CN102330192A (en) | 2012-01-25 |
| CN102330192B CN102330192B (en) | 2013-04-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978732A (en) * | 2012-09-29 | 2013-03-20 | 安徽省三森纺织有限公司 | Active polyester fiber preparation method |
| CN115074999A (en) * | 2022-05-06 | 2022-09-20 | 浙江理工大学 | Method for enhancing adhesion between cord fabric and rubber matrix |
| CN115075001A (en) * | 2022-05-06 | 2022-09-20 | 浙江理工大学 | Preparation method of activating oil agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11293570A (en) * | 1998-04-09 | 1999-10-26 | Teijin Ltd | Production of polyester yarn for reinforcing rubber |
| CN1321172A (en) * | 1999-08-23 | 2001-11-07 | 帝人株式会社 | Process for producing adhesive-treated polyester fiber cord |
| US20030198794A1 (en) * | 2002-04-18 | 2003-10-23 | Toyo Boseki Kabushiki Kaisha | Method for manufacturing a polyester fiber cord for reinforcing rubber materials |
| EP1854917A1 (en) * | 2005-03-03 | 2007-11-14 | Toyo Boseki Kabushiki Kasisha | Reinforcing polyester cord for rubbers and process for production thereof |
-
2011
- 2011-08-18 CN CN 201110237781 patent/CN102330192B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11293570A (en) * | 1998-04-09 | 1999-10-26 | Teijin Ltd | Production of polyester yarn for reinforcing rubber |
| CN1321172A (en) * | 1999-08-23 | 2001-11-07 | 帝人株式会社 | Process for producing adhesive-treated polyester fiber cord |
| US20030198794A1 (en) * | 2002-04-18 | 2003-10-23 | Toyo Boseki Kabushiki Kaisha | Method for manufacturing a polyester fiber cord for reinforcing rubber materials |
| EP1854917A1 (en) * | 2005-03-03 | 2007-11-14 | Toyo Boseki Kabushiki Kasisha | Reinforcing polyester cord for rubbers and process for production thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978732A (en) * | 2012-09-29 | 2013-03-20 | 安徽省三森纺织有限公司 | Active polyester fiber preparation method |
| CN115074999A (en) * | 2022-05-06 | 2022-09-20 | 浙江理工大学 | Method for enhancing adhesion between cord fabric and rubber matrix |
| CN115075001A (en) * | 2022-05-06 | 2022-09-20 | 浙江理工大学 | Preparation method of activating oil agent |
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| CN102330192B (en) | 2013-04-10 |
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