CN114481335B - High-strength sun-resistant anti-aging polyester pre-oriented yarn for curtain and preparation method thereof - Google Patents
High-strength sun-resistant anti-aging polyester pre-oriented yarn for curtain and preparation method thereof Download PDFInfo
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- CN114481335B CN114481335B CN202111553085.2A CN202111553085A CN114481335B CN 114481335 B CN114481335 B CN 114481335B CN 202111553085 A CN202111553085 A CN 202111553085A CN 114481335 B CN114481335 B CN 114481335B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
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Abstract
The application discloses a preparation method of terylene pre-oriented yarn for a high-strength sun-proof anti-aging curtain, which comprises the following steps: configuration: forming a uniform slurry suspension by using polyethylene glycol terephthalate, ethylene glycol and pentaerythritol suspension under the stirring action of a stirrer; esterification: reacting the slurry suspension at high temperature for 4-6 hours to generate dihydroxyethyl terephthalate; polycondensation: after the esterification reaction is finished, adding the dihydroxyethyl terephthalate into the titanium dioxide suspension by an online high-proportion homogenization titanium dioxide injection technology; the polyester pre-oriented yarn for the high-strength sun-resistant anti-aging curtain and the preparation method thereof are adopted, and titanium dioxide can absorb ultraviolet rays, reflect and scatter the ultraviolet rays and also transmit visible light, so that the polyester pre-oriented yarn is a raw material for shielding ultraviolet rays with excellent performance.
Description
Technical Field
The invention belongs to the technical field of chemical fiber production, and particularly relates to a terylene pre-oriented yarn for a high-strength sun-proof anti-aging curtain and a preparation method thereof.
Background
After the synthetic fiber is successfully developed by Dupont in 1928, the synthetic fiber is favored by people because the synthetic fiber has excellent properties which are incomparable with most natural fibers, such as strength, good dimensional stability, mildew and moth resistance and the like. Through rapid development for many years, synthetic fibers have become important textile materials, wherein polyester fibers are a main variety of synthetic fibers, and the 2020 polyester accounts for 82% of the specific gravity of the synthetic fibers.
Polyester fibers were also used in the field of clothing, and are known for their ironing-free and wear-resistant properties. With the deep research of the polyester fiber foundation and the continuous improvement of the process technology, the production cost of the polyester fiber is continuously reduced, the strength, the wear resistance, the stability and the like are greatly improved, and the polyester fiber has already entered the fields of curtains, carpets, automobiles, advertisements and the like. However, when the post-processing product of the polyester fiber is a curtain, the aging of the polyester fiber is aggravated under the long-term use of sunlight irradiation. The main manifestations are: the mechanical property and chemical property are poor, basically the content of carboxyl end group is increased, the mechanical property is poor, and finally brittle fracture occurs. In addition, in order to meet the demands of people on the good life and the beautiful appearance of the window curtain, the polyester fiber needs to be dyed, but the macromolecular structure of the polyester is a rigid group, so that the dyeing and the color difference are relatively poor, and especially the color can be seriously faded when the sun is exposed for a long time. For this reason, these disadvantages of polyester fibers not only bring more difficulties to the finishing of textiles but also seriously affect the application of polyester fibers.
Because sunlight irradiation is a main reason for influencing degradation of polyester fibers, the aging degradation phenomenon of the polyester fibers in the high-temperature exposure environment in the curtain field at home and abroad is mainly adopted in the following two ways:
1. physical coating method
The anti-aging agent is physically coated on the surface of the polyester fiber or the fabric, but the high temperature resistance and aging resistance of the anti-aging agent are only dependent on the adsorption of the surface of the fabric, so that the fabric and the coating layer do not have chemical reaction, the stability of the anti-aging agent is poor, and the high temperature resistance of the coating layer is basically zero after the anti-aging agent is washed for several times. Meanwhile, as the anti-aging agent is coated on the surface of the fabric during after finishing, the hand feeling of the fabric is hard, and the hand feeling and practicability of the fabric are seriously affected.
2. Chemical modification method
The high-temperature aging resistance of the polyester fiber is improved through copolymerization modification, namely, a certain anti-aging agent and an inorganic nanometer ultraviolet light shielding agent are added in the polyester production process to inhibit the influence of external factors such as light, heat, water and the like on the polyester material. Although the copolymerization modification method can solve the problem of the physical coating method, any additive is likely to become an impurity affecting the polyester, so that the problems of poor dispersion uniformity, incompatibility with polyester macromolecules and the like are faced in the production process of the polyester fiber, the difficulty of fiber processing and molding is increased, and the physical properties of the polyester fiber are reduced.
Therefore, the fiber which does not add nano ultraviolet screening agent and improves the strength and Gao Wenri sun-proof aging resistance of the polyester fiber is a technical problem to be solved at present.
Disclosure of Invention
The invention aims to solve one of the technical problems existing in the prior art.
The application provides a preparation method of terylene pre-oriented yarn for a high-strength sun-proof anti-aging curtain, which is characterized by comprising the following steps of:
s1, configuration: forming a uniform slurry suspension by stirring refined terephthalic acid (PTA), ethylene Glycol (EG) and pentaerythritol suspension by a stirrer;
s2, esterification: reacting the slurry suspension at 260-275 ℃ for 4-6 hours to generate dihydroxyethyl terephthalate (BHET);
s3, polycondensation: after the esterification reaction is finished, dihydroxyethyl terephthalate (BHET) is added into the titanium dioxide suspension by an online high-proportion homogenization titanium dioxide injection technology;
s4, injecting the tackifying slice of 0.05% into the spinning melt obtained in the step S3, drying for 3 hours at 145 ℃, melting, filtering on line through a component, and carrying out spinning molding.
According to the terylene pre-oriented yarn for the high-strength sun-proof anti-aging curtain and the preparation method thereof, the online high-proportion homogenized titanium dioxide injection technology is adopted to uniformly disperse titanium dioxide in the fiber, and the addition amount of the titanium dioxide is flexibly adjusted according to the requirements of customers. At present, the titanium dioxide content required by customers is 0.25%, the proportion produces polyester fiber with soft luster and certain Gao Wenri sun-proof and ageing-resistant performances, the tackifying slice with 0.05% is injected, and the tackifying slice is dried for 3 hours at 145 ℃ so that the water content of the tackifying slice is less than 4 multiplied by 10 -5 。
The beneficial effects of the invention are as follows:
1. titanium dioxide can absorb ultraviolet rays, reflect and scatter ultraviolet rays, and also transmit visible light, so that the titanium dioxide is a raw material for shielding ultraviolet rays with excellent performance. However, if the titanium dioxide added into the polyester melt is added after the particles are ground, if the ground titanium dioxide small particles are agglomerated in the polyester melt, the melt trickle is easy to break when the spinning holes are used for spraying and stretching, and a plurality of adverse effects are brought to the production stability and the product quality. Therefore, the online high-proportion homogenizing titanium dioxide injection technology has the advantages of short flow, uniform mixing of titanium dioxide and the like. And the produced fiber has high-temperature sunlight resistance and ageing resistance.
2. The breaking strength of the fiber is improved by online injection and addition of the online tackifying slice. And the filtering technology of the assembly is overlapped, so that the filtering performance is improved, and the number of times of breakage is reduced. The high-pressure friction energy is converted into heat energy when the melt passes through the components, so that the spinning temperature is instantaneously increased. Improves the flow property of the melt in capillary holes, reduces the puffing effect and improves the breaking strength of the fiber.
The online high-proportion homogenized titanium dioxide injection technology comprises the following steps:
a1: uniformly stirring titanium dioxide and ethylene glycol in a blending tank at a high speed to form a titanium dioxide suspension;
a2: the titanium dioxide suspension qualified through the assay enters a feeding groove with a temperature display meter and a liquid level meter;
a3: the adding pipeline at the bottom of the feeding tank is communicated to the pre-condensation front of the step S3, and the adding amount of the titanium dioxide suspension is controlled by a liquid level meter.
By adopting the technical scheme, the titanium dioxide in the fiber is uniformly dispersed by the technology, and the addition amount of the titanium dioxide is flexibly adjusted according to the requirements of customers. At present, the titanium dioxide content required by customers is 0.25%, and the proportion produces polyester fibers with soft luster and certain Gao Wenri sun-proof ageing resistance.
The method also comprises the component online filtering method:
b1: placing a metal non-woven fabric super felt filter material at the bottom of the sand cup;
b2: sequentially placing 60g 40-mesh metal sand, a 50-mesh filter screen, 60g 60-80-mesh metal sand, a 50-mesh filter screen and 50g 80-100-mesh metal sand into a sand cup;
b3: the initial pressure of the assembly was increased from 15.0Mpa to 17.5Mpa.
Still include a allotment groove, it includes allotment groove body, inlet pipe and the rabbling mechanism that has the inner chamber, its characterized in that still includes:
the blocking mechanism is used for blocking the inner cavity of the feeding pipe.
The plugging mechanism comprises:
a slide housing mounted on the feed tube;
a sliding groove, one end of which is positioned in the sliding shell, and the other end of which extends into the feeding pipe;
a slider movably installed in the sliding groove;
the pushing mechanism is used for driving the sliding piece to move between the sliding groove and the inner cavity of the feeding pipe.
The pushing mechanism comprises:
one end of the pushing rod is fixedly connected with the sliding piece, and the other end of the pushing rod movably penetrates through the closed end of the sliding shell and extends out of the sliding shell;
the pushing plate is fixedly arranged at one end of the pushing rod, which is far away from the sliding piece;
the pushing turntable is driven to rotate and is arranged at the top of the blending tank body through a servo motor;
the pushing block is fixedly arranged on the surface of the pushing turntable and rotates along with the pushing turntable to push the pushing plate to reciprocate;
and a return spring for applying a pushing force to the pusher plate away from the slide case.
The pushing mechanism further includes:
an inner seal for preventing leakage of slurry into the sliding housing;
and the outer sealing piece is used for preventing the slurry from leaking into the inner cavity of the blending tank body when the sliding piece enters the feeding pipe.
The inner seal includes:
a pair of sealing grooves which are vertically opposite to the inner side of the sliding shell and are communicated with the sliding groove;
a sealing bladder having a pair and being respectively installed in each of the sealing grooves;
and a pressing mechanism having a pair and respectively for applying pressure to each sealing bladder toward the feed pipe.
The pressing mechanism includes:
the pressing sliding block is movably arranged in the sealing groove;
a first permanent magnet mounted on the pressing slider;
a second permanent magnet mounted on the sealed airbag;
the first permanent magnet and the second permanent magnet are arranged between the opposite side walls of the pressing sliding block and the sealing air bag and repel each other.
The outer seal includes:
the lifting groove is arranged at one side of the top of the sliding piece, which faces the feeding pipe;
a lifting shell vertically slidably installed in the lifting groove;
a pressing spring installed in the elevation groove for applying an upward pressure to the elevation case;
and the wear-resistant sealing gasket is arranged on the top surface of the lifting shell.
Further comprises:
the measuring hopper is arranged at the top end of the feeding pipe, and scales are arranged on the inner wall of the measuring hopper.
The beneficial effects of the present invention will be described in detail in the examples, thereby making the beneficial effects more apparent.
Drawings
FIG. 1 is a schematic structural diagram of a concrete implementation of a chute in an embodiment of the present application;
fig. 2 is a schematic view of a partial enlarged structure at a in fig. 1.
Reference numerals
1-blending tank body, 2-feeding pipe, 3-stirring mechanism, 4-plugging mechanism, 401-sliding shell, 402-sliding groove, 403-sliding piece, 5-pushing mechanism, 501-pushing rod, 502-pushing plate, 503-pushing turntable, 504-pushing block, 505-reset spring, 6-inner sealing piece, 601-sealing groove, 602-sealing air bag, 7-outer sealing piece, 701-lifting groove, 702-lifting shell, 703-pressing spring, 704-wear-resisting sealing gasket, 8-pressing mechanism, 801-pressing sliding block, 802-permanent magnet I, 803-permanent magnet II and 9-bucket.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The server provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings by means of specific embodiments and application scenarios thereof.
Example 1:
as shown in fig. 1 to 2, the embodiment of the application provides a preparation method of terylene pre-oriented yarn for a high-strength sun-proof anti-aging curtain, which is characterized by comprising the following steps:
s1, configuration: forming a uniform slurry suspension by stirring refined terephthalic acid (PTA), ethylene Glycol (EG) and pentaerythritol suspension by a stirrer;
s2, esterification: reacting the slurry suspension at 260-275 ℃ for 4-6 hours to generate dihydroxyethyl terephthalate (BHET);
s3, polycondensation: after the esterification reaction is finished, dihydroxyethyl terephthalate (BHET) is added into the titanium dioxide suspension by an online high-proportion homogenization titanium dioxide injection technology;
s4, injecting the tackifying slice of 0.05% into the spinning melt obtained in the step S3, drying for 3 hours at 145 ℃, melting, filtering on line through a component, and carrying out spinning molding.
In the embodiment of the application, the polyester pre-oriented yarn for the high-strength sun-resistant anti-aging curtain and the preparation method thereof are adopted, and the titanium dioxide can absorb ultraviolet rays, reflect and scatter the ultraviolet rays, and also transmit visible light, so that the polyester pre-oriented yarn is a raw material for shielding ultraviolet rays with excellent performance. However, if the titanium dioxide added into the polyester melt is added after the particles are ground, if the ground titanium dioxide small particles are agglomerated in the polyester melt, the melt trickle is easy to break when the spinning holes are used for spraying and stretching, and a plurality of adverse effects are brought to the production stability and the product quality. Therefore, the online high-proportion homogenizing titanium dioxide injection technology has the advantages of short flow, uniform mixing of titanium dioxide and the like. And the produced fiber has high-temperature sunlight resistance and ageing resistance;
injecting 0.05% tackifying slice, drying at 145 deg.C for 3 hr to make the moisture content of tackifying slice smaller than 4×10 -5 The breaking strength of the fiber is improved. The high-pressure friction energy is converted into heat energy when the melt passes through the components, so that the spinning temperature is instantaneously increased. Improves the flow property of the melt in capillary holes, reduces the puffing effect and improves the breaking strength of the fiber.
Example 2:
in this example, in addition to including the structural features of the previous examples, the in-line high-ratio homogenized titanium dioxide injection technique includes the steps of:
a1: uniformly stirring titanium dioxide and ethylene glycol in a blending tank at a high speed to form a titanium dioxide suspension;
a2: the titanium dioxide suspension qualified through the assay enters a feeding groove with a temperature display meter and a liquid level meter;
a3: the adding pipeline at the bottom of the feeding tank is communicated to the pre-condensation front of the step S3, and the adding amount of the titanium dioxide suspension is controlled by a liquid level meter.
In this embodiment, due to the adoption of the above structure, the titanium dioxide in the fiber is uniformly dispersed by the technology, and the adding amount of the titanium dioxide is flexibly adjusted according to the requirements of customers. At present, the titanium dioxide content required by customers is 0.25%, and the proportion produces polyester fibers with soft luster and certain Gao Wenri sun-proof ageing resistance.
Example 3:
in this embodiment, besides the structural features of the foregoing embodiment, the method further includes an on-line component filtering method: :
b1: placing a metal non-woven fabric super felt filter material at the bottom of the sand cup;
b2: sequentially placing 60g 40-mesh metal sand, a 50-mesh filter screen, 60g 60-80-mesh metal sand, a 50-mesh filter screen and 50g 80-100-mesh metal sand into a sand cup;
b3: the initial pressure of the assembly was increased from 15.0Mpa to 17.5Mpa.
In this embodiment, due to the adoption of the above structure, the filtering performance is improved and the number of times of breakage is reduced by the component filtering technology.
Example 4:
in this embodiment, still disclose a allotment groove, including allotment groove body 1, inlet pipe 2 and the rabbling mechanism 3 that have the inner chamber, its characterized in that still includes:
a blocking mechanism 4 for blocking the inner cavity of the feed pipe 2.
In this embodiment, owing to adopted foretell structure, through the setting of shutoff mechanism 4, the inner chamber of shutoff inlet pipe 2 avoids because of the inlet pipe 2 inner chamber is not tight because of the shutoff, and lead to the dust to leak into and lead to titanium dioxide suspension quality bad or lead to too much thick liquids to get into and lead to titanium dioxide suspension ratio unsatisfactory in the inner chamber of blending tank body 1 in the inner chamber, makes production quality influenced phenomenon take place, through this kind of mode, improves product quality.
Example 5:
in this embodiment, in addition to including the structural features of the foregoing embodiment, the plugging mechanism 4 includes:
a sliding housing 401 mounted on the feed pipe 2;
a sliding groove 402 having one end located in the sliding housing 401 and the other end extending into the feed pipe 2;
a slider 403 movably mounted in the slide groove 402;
and the pushing mechanism 5 is used for driving the sliding piece 403 to move between the sliding groove 402 and the inner cavity of the feeding pipe 2.
In this embodiment, due to the above structure, when the feeding pipe 2 needs to be plugged, the pushing mechanism 5 pushes the sliding piece 403 to slide in the sliding groove 402 until one end of the pushing mechanism far away from the sliding shell 401 abuts against the inner cavity of the feeding pipe 2 and faces one side of the sliding shell 401, so that the feeding pipe 2 is plugged, the pushing mechanism 5 stops running, the sliding piece 403 stays in the feeding pipe 2, and in this way, the plugging of the feeding pipe 2 is good, and the structure is simple and convenient to install and maintain.
Example 6:
in this embodiment, in addition to including the structural features of the foregoing embodiment, the pushing mechanism 5 includes:
a pushing rod 501, one end of which is fixedly connected with the sliding member 403, and the other end of which is movably inserted through the closed end of the sliding shell 401 to extend out of the sliding shell;
a pushing plate 502 fixedly installed at one end of the pushing rod 501 away from the sliding member 403;
a pushing turntable 503 which is driven by a servo motor to rotate and is arranged at the top of the blending tank body 1;
the pushing block 504 is fixedly arranged on the surface of the pushing turntable 503, and rotates along with the pushing turntable 503 to push the pushing plate 502 to reciprocate;
a return spring 505 for applying a pushing force to the pusher plate 502 away from the slide case 401.
In this embodiment, due to the adoption of the above structure, the servo motor drives the pushing turntable 503 to rotate, the pushing block 504 pushes the pushing plate 502, the pushing rod 501 and the sliding piece 403 to move towards the feeding pipe 2 along with the rotation of the pushing turntable 503 until the sliding piece 403 seals the feeding pipe 2, the servo motor stops running, meanwhile, the reset spring 505 is pressed to store elastic potential energy, when the feeding pipe 2 is required to be sealed, the servo motor is started, the pushing turntable 503 rotates, the pushing block 504 is gradually far away from the feeding pipe 2, the reset spring 505 releases the elastic potential energy, the pushing plate 502 pushes the pushing rod 501 and the sliding piece 403 to move towards the direction far away from the feeding pipe 2, two ends of the inner cavity of the feeding pipe 2 are communicated, the slurry flows into the inner cavity of the blending tank body 1 through the feeding pipe 2, and the servo motor stops running.
Example 7:
in this embodiment, in addition to the structural features of the foregoing embodiment, the pushing mechanism 5 further includes:
an inner seal 6 for preventing leakage of slurry into the slide case 401;
an external seal 7 for preventing leakage of slurry into the interior cavity of the dosing tank body 1 when the slide 403 enters the feed tube 2.
In this embodiment, owing to adopted foretell structure, through the setting of interior sealing member 6, avoid thick liquid to leak between slide case 401 and the slider 403, the workman is difficult to clear up it, leads to the phenomenon of equipment trouble to take place, through the setting of outer sealing member 7, improves the sealing effect between slider 403 and the inlet pipe 2 inner wall when entering inlet pipe 2, further avoids dust or unnecessary thick liquid to get into in the blending tank body 1 inner chamber, has improved the production quality of product.
Example 8:
in this embodiment, in addition to including the structural features of the previous embodiment, the inner seal 6 includes:
a seal groove 601 which is provided with a pair of seal grooves which are vertically opposed to each other inside the slide case 401 and which communicates with the slide groove 402;
a seal airbag 602 having a pair and being installed in each of the seal grooves 601;
a pair of pressing mechanisms 8 for respectively applying pressure to each sealing bladder 602 toward the feed pipe 2.
In this embodiment, since the above structure is adopted, the pressure is applied to the sealing airbag 602 by the pressure applying mechanism 8, so that the sealing airbag is expanded in the sealing groove 601, and the outer wall of the sealing airbag can be tightly attached to the outer wall of the sealing groove 601 and the sliding member 403, so as to play a role in isolating slurry, prevent the slurry from entering between the sliding housing 401 and the sliding member 403, and improve the service life of the device.
Example 9:
in this embodiment, in addition to including the structural features of the foregoing embodiment, the pressing mechanism 8 includes:
a pressing slider 801 movably installed in the sealing groove 601;
a permanent magnet 802 mounted on the pressing slider 801;
a second permanent magnet 803 mounted on the sealing airbag 602;
wherein the first permanent magnet 802 and the second permanent magnet 803 are arranged between the opposite side walls of the pressing slide block 801 and the sealing air bag 602 and repel each other.
In this embodiment, due to the above structure, when the sliding member 403 slides in the sliding cavity, the pressing slider 801 moves along with it to drive the permanent magnet one 802 to move in the direction of the permanent magnet two 803, and due to the repulsion between the permanent magnet one 802 and the permanent magnet two 803, the repulsive force is transmitted to the sealing air bag 602 through the permanent magnet two 803 to deform the sealing air bag 602, in this way, the outer wall of the sealing air bag is expanded in the sealing groove 601, and can be tightly attached to the outer wall of the sealing groove 601 and the outer wall of the sliding member 403, so as to play a role in isolating slurry, prevent the slurry from entering between the sliding shell 401 and the sliding member 403, and improve the service life of the device.
Example 10:
in this embodiment, in addition to including the structural features of the previous embodiment, the outer seal 7 includes:
a lifting groove 701 which is arranged on one side of the top of the sliding piece 403 facing the feeding pipe 2;
a lifting case 702 vertically slidably installed in the lifting groove 701;
a pressing spring 703 installed in the elevation groove 701 for applying an upward pressing force to the elevation case 702;
and a wear-resistant gasket 704 mounted on the top surface of the lifting case 702.
In this embodiment, due to the adoption of the above structure, the pressing spring 703 applies an upward pressure to the lifting shell 702, when one end of the sliding member 403 enters the inner cavity of the feeding pipe 2, the wear-resistant sealing pad 704 is tightly attached to the top surface of the sliding groove 402 in the inner cavity of the feeding pipe 2, so that the sealing effect is improved, slurry can be effectively prevented from flowing through the feeding pipe 2, and the blocking effect is improved.
Example 11:
in this embodiment, in addition to including the structural features of the foregoing embodiment, it further includes:
a measuring hopper 9 is arranged at the top end of the feeding pipe 2, and the inner wall of the measuring hopper is provided with scales.
In this embodiment, due to the above structure, the slurry before entering the feeding pipe 2 is measured by the arrangement of the scale weighing hopper 9 on the inner wall, and the sliding piece 403 slides reciprocally in the sliding groove 402 according to the measurement, so as to block or communicate with the feeding pipe 2, realize quantitative feeding, and improve the production quality of the product.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (1)
1. The preparation method of the terylene pre-oriented yarn for the high-strength sun-proof anti-aging curtain is characterized by comprising the following steps of:
s1, configuration: forming a uniform slurry suspension by stirring refined terephthalic acid (PTA), ethylene Glycol (EG) and pentaerythritol suspension by a stirrer;
s2, esterification: reacting the slurry suspension at 260-275 ℃ for 4-6 hours to generate dihydroxyethyl terephthalate (BHET);
s3, polycondensation: after the esterification reaction is finished, dihydroxyethyl terephthalate (BHET) is added into the titanium dioxide suspension by an online high-proportion homogenization titanium dioxide injection technology, and the titanium dioxide content is 0.25%, so that polyester fibers with soft luster are produced and have certain Gao Wenri sun-proof and ageing-resistant performances;
s4, injecting 0.05% of tackifying slices into the spinning melt obtained in the step S3, and drying at 145 ℃ for 3 hours to ensure that the moisture content of the tackifying slices is less than 4 multiplied by 10 -5 Melting and filtering on line by a component, and then spinning and forming; the online high-proportion homogenized titanium dioxide injection technology comprises the following steps:
a1: uniformly stirring titanium dioxide and ethylene glycol in a blending tank at a high speed to form a titanium dioxide suspension;
a2: the titanium dioxide suspension qualified through the assay enters a feeding groove with a temperature display meter and a liquid level meter;
a3: the adding pipeline at the bottom of the feeding tank is communicated to the pre-condensation front of the step S3, and the adding amount of the titanium dioxide suspension is controlled by a liquid level meter;
the method also comprises the component online filtering method:
b1: placing a metal non-woven fabric super felt filter material at the bottom of the sand cup;
b2: sequentially placing 60g 40-mesh metal sand, a 50-mesh filter screen, 60g 60-80-mesh metal sand, a 50-mesh filter screen and 50g 80-100-mesh metal sand into a sand cup;
b3: increasing the initial pressure of the assembly from 15.0Mpa to 17.5Mpa;
the blending groove comprises a blending groove body (1) with an inner cavity, a feeding pipe (2) and a stirring mechanism (3), and is characterized by further comprising:
a blocking mechanism (4) for blocking an inner cavity of a feed tube (2), the blocking mechanism (4) comprising:
a sliding shell (401) mounted on the feed pipe (2);
a sliding groove (402) with one end positioned in the sliding shell (401) and the other end extending into the feed pipe (2);
a slider (403) movably mounted in the slide groove (402);
the pushing mechanism (5) is used for driving the sliding piece (403) to move between the sliding groove (402) and the inner cavity of the feeding pipe (2);
the pushing mechanism (5) comprises:
one end of the pushing rod (501) is fixedly connected with the sliding piece (403), and the other end of the pushing rod is movably inserted through the closed end of the sliding shell (401) to extend out of the sliding shell;
a pushing plate (502) fixedly installed at one end of the pushing rod (501) far away from the sliding piece (403);
the pushing turntable (503) is driven to rotate and is arranged at the top of the blending groove body (1) through a servo motor;
the pushing block (504) is fixedly arranged on the surface of the pushing turntable (503) and rotates along with the pushing turntable (503) to push the pushing plate (502) to reciprocate;
a return spring (505) for applying a pushing force to the pusher plate (502) away from the slide case (401);
the pushing mechanism (5) further comprises:
an inner seal (6) for preventing leakage of slurry into the sliding housing (401);
an external seal (7) for preventing leakage of slurry into the inner cavity of the dosing tank body (1) when the slider (403) enters the feed pipe (2);
the inner seal (6) comprises:
a seal groove (601) which is provided with a pair of seal grooves which are vertically opposite to each other inside the slide case (401) and are communicated with the slide groove (402);
a seal airbag (602) having a pair and being installed in each of the seal grooves (601);
a pressing mechanism (8) having a pair and respectively for applying a pressing force toward the feed pipe (2) to each of the sealing balloons (602);
the pressing mechanism (8) includes:
a pressing slider (801) movably installed in the sealing groove (601);
a first permanent magnet (802) mounted on the pressing slider (801);
a second permanent magnet 803 mounted on the sealing airbag 602;
the first permanent magnet (802) and the second permanent magnet (803) are arranged between opposite side walls of the pressing sliding block (801) and the sealing air bag (602) and repel each other;
the outer seal (7) comprises:
a lifting groove (701) which is arranged on one side of the top of the sliding piece (403) facing the feeding pipe (2);
a lifting case (702) vertically slidably installed in the lifting groove (701);
a pressing spring (703) installed in the elevation groove (701) for applying upward pressure to the elevation case (702);
and a wear-resistant sealing pad (704) mounted on the top surface of the lifting shell (702).
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| CN202111553085.2A CN114481335B (en) | 2021-12-17 | 2021-12-17 | High-strength sun-resistant anti-aging polyester pre-oriented yarn for curtain and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111553085.2A CN114481335B (en) | 2021-12-17 | 2021-12-17 | High-strength sun-resistant anti-aging polyester pre-oriented yarn for curtain and preparation method thereof |
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| CN114481335A CN114481335A (en) | 2022-05-13 |
| CN114481335B true CN114481335B (en) | 2023-06-27 |
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| CN103304791A (en) * | 2013-05-08 | 2013-09-18 | 江苏德力化纤有限公司 | Preparation process of high-quality fusant |
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| US6313235B1 (en) * | 1999-12-31 | 2001-11-06 | Industrial Technology Research Institute | Method for preparing polypropylene terephthalate/polyethylene terephtalate copolyester |
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| CN114481335A (en) | 2022-05-13 |
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