CN114150400A - Novel sheath-core composite monofilament and preparation method thereof - Google Patents
Novel sheath-core composite monofilament and preparation method thereof Download PDFInfo
- Publication number
- CN114150400A CN114150400A CN202111551790.9A CN202111551790A CN114150400A CN 114150400 A CN114150400 A CN 114150400A CN 202111551790 A CN202111551790 A CN 202111551790A CN 114150400 A CN114150400 A CN 114150400A
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- China
- Prior art keywords
- lcp
- melt
- sheath
- core
- layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims description 13
- 239000010410 layer Substances 0.000 claims abstract description 30
- 239000012792 core layer Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000002844 melting Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 238000009987 spinning Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 4
- 230000014759 maintenance of location Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 229920006253 high performance fiber Polymers 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- 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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Multicomponent Fibers (AREA)
Abstract
The invention provides a novel sheath-core composite monofilament, which relates to the field of high-performance fibers and comprises a sheath layer and a core layer; the skin layer wraps the core layer; the skin layer is made of a PEN and LCP blended material; the core layer is made of LCP materials. According to the novel sheath-core composite monofilament provided by the invention, the blended material of PEN and LCP is used as the sheath layer and the LCP is used as the core layer, so that the sheath layer and the core layer are compatible and the bonding rate is enhanced, the problem that the sheath layer and the core layer are easy to fall off in the prior art is effectively solved, the strength retention rate and the evenness uniformity of the composite monofilament are facilitated, and the service life of equipment and devices (such as printing screens) using the composite monofilament is prolonged.
Description
Technical Field
The invention relates to the field of high-performance fibers, in particular to a novel sheath-core composite monofilament and a preparation method thereof.
Background
The composite monofilaments of PEN and LCP as the skin and core layers, respectively, are composite monofilaments commonly used in the art, such as printing screens. However, the PEN and LCP in the prior art are not enough in combination degree of the skin layer and the core layer of the monofilament, and are easy to fall off, so that the strength of the composite monofilament is reduced, and the precision and the service life of equipment and devices (such as printing screens) adopting the composite monofilament are reduced.
Disclosure of Invention
Aiming at the technical problems, the novel sheath-core composite monofilament and the preparation method effectively solve the technical problem that the sheath layer and the core layer are easy to fall off in the prior art.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention provides a novel sheath-core composite monofilament, which comprises a sheath layer and a core layer; the skin layer wraps the core layer; the skin layer is made of a PEN and LCP blended material; the core layer is made of LCP materials.
According to the novel sheath-core composite monofilament provided by the invention, preferably, the proportion of PEN and LCP in the sheath layer is 70-85 wt% and 15-30 wt%.
The invention provides a preparation method of a novel sheath-core composite monofilament, which comprises the following steps:
PEN and LCP materials are blended and are prepared into uniform blended melt after being melted by a screw;
melting LCP material by a screw to prepare uniform LCP melt;
respectively feeding the blended melt and the LCP melt into a composite spinning box, and extruding the blended melt and the LCP melt through a composite spinning plate to obtain coiled filaments; wherein, the blended melt is sent into a composite spinning box through a dynamic online mixing and conveying device;
the winding wire is wound on the single-wire barrel after passing through a heat pipe sealing area, a constant temperature cooling area, a double-area oil feeding wheel, a hot plate wire guiding area and a multi-hot roller heat treatment area.
According to the preparation method of the novel sheath-core composite monofilament, the proportion of PEN and LCP in the blended melt is 70-85 wt% and 15-30 wt% preferably.
The invention provides a preparation method of a novel sheath-core composite monofilament, preferably, the step of blending PEN and LCP materials, and preparing a uniform blended melt after screw melting specifically comprises the following steps: blending PEN and LCP materials, and extruding the mixture under the pressure of 15-30 MPa through screw melting to prepare a uniform blended melt;
wherein the melting temperature of the screw is 295-335 ℃.
The invention provides a preparation method of a novel skin-core composite monofilament, preferably, the step of preparing a uniform LCP melt from an LCP material after being melted by a screw comprises the following specific steps: the LCP material is prepared into a uniform LCP melt after being melted by a screw, wherein the melting temperature of the screw is 285-340 ℃.
The preparation method of the novel sheath-core composite monofilament provided by the invention is characterized in that preferably, the temperature in the spinning box is 320-345 ℃; the extrusion pressure of the composite spinning plate is 10-16 Mpa.
According to the preparation method of the novel sheath-core composite monofilament, the temperature of the closed area of the heat pipe is preferably 295-345 ℃; the temperature of the constant-temperature cooling area is 45-65 ℃; the rotating speed of the double-area oil loading wheel is 15-65 r/min; the temperature of the hot plate wire guiding area is 150-230 ℃; the number of rollers in the multi-hot roller heat treatment area is 18-26, and the temperature is 230-255 ℃; the rotating speed of the monofilament cylinder is 600-1200 m/min.
The technical scheme has the following advantages or beneficial effects:
the invention provides a novel sheath-core composite monofilament, which comprises a sheath layer and a core layer; the skin layer wraps the core layer; the skin layer is made of a PEN and LCP blended material; the core layer is made of LCP materials. According to the novel sheath-core composite monofilament provided by the invention, the blended material of PEN and LCP is used as the sheath layer and the LCP is used as the core layer, so that the sheath layer and the core layer are compatible and the bonding rate is enhanced, the problem that the sheath layer and the core layer are easy to fall off in the prior art is effectively solved, the strength retention rate and the evenness uniformity of the composite monofilament are facilitated, and the service life of equipment and devices (such as printing screens) using the composite monofilament is prolonged.
Detailed Description
The technical solutions in the embodiments of the present invention are explained below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, belong to the protection scope of the invention.
Example 1:
the invention provides a novel sheath-core composite monofilament, which comprises a sheath layer and a core layer; the skin layer wraps the core layer; the skin layer is made of a PEN and LCP blended material; the core layer is made of LCP material; the proportion of PEN in the skin layer is 70-85 wt%, and the proportion of LCP in the skin layer is 15-30 wt%.
According to the novel sheath-core composite monofilament provided by the embodiment 1 of the invention, the blended material of PEN and LCP is used as the sheath layer and the LCP is used as the core layer, so that the sheath layer and the core layer are compatible and the bonding rate is enhanced, the problem that the sheath layer and the core layer are easy to fall off in the prior art is effectively solved, the strength retention rate and the evenness uniformity of the composite monofilament are facilitated, and the service life of equipment and devices (such as printing screens) using the composite monofilament is prolonged.
Example 2:
the invention provides a preparation method for preparing the novel sheath-core composite monofilament in the embodiment 1 of the invention, which comprises the following steps:
s101: 70-85 wt% of PEN and 15-30 wt% of LCP materials are blended, and are extruded under the pressure of 15-30 MPa through screw melting to prepare uniform blended melt; wherein the melting temperature of the screw is 295-335 ℃.
S102: melting LCP material by a screw to prepare uniform LCP melt; wherein the melting temperature of the screw is 285-340 DEG C
S103: respectively feeding the blended melt and the LCP melt into a composite spinning box with the internal temperature of 320-345 ℃, and extruding through a composite spinning plate to obtain coiled filaments; the extrusion pressure of the composite spinning plate is 10-16 Mpa; wherein the blended melt is sent into a composite spinning box through a dynamic online mixing and conveying device
S104: winding the winding wire on a single wire barrel after passing through a heat pipe closed area with the temperature of 295-345 ℃, a constant temperature cooling area with the temperature of 45-65 ℃, a double-area oil applying wheel with the rotating speed of 15-65 r/min, a hot plate wire guiding area with the temperature of 150-230 ℃ and a multi-hot roller heat treatment area with the number of rollers of 18-26; wherein the temperature of the multi-hot-roll heat treatment area is 230-255 ℃; the rotating speed of the monofilament tube is 600-1200 m/min.
In the embodiment, the blending melt is conveyed by adopting the dynamic online mixing and conveying device, so that PEN and LCP in the blending melt are mixed more uniformly, and the uniformity of the diameters of monofilaments is effectively kept; according to the embodiment, the multi-hot-roll treatment is adopted, so that the high PEN crystallization is facilitated, the adhesion in subsequent treatment is reduced, the monofilament uniformity is improved, the cost is reduced on the premise that the monofilament strength is 10-12.5 CN/dttx, the monofilament strength retention rate and the evenness are facilitated, and the service life of downstream products (printing screens, filter screens and the like) of the composite monofilaments is prolonged.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent modifications made by the present specification or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (8)
1. A novel sheath-core composite monofilament is characterized by comprising a sheath layer and a core layer; the skin layer wraps the core layer; the skin layer is made of a PEN and LCP blended material; the core layer is made of LCP materials.
2. The novel sheath-core composite monofilament as claimed in claim 1, wherein the sheath layer contains PEN 70-85 wt% and LCP 15-30 wt%.
3. A preparation method of a novel sheath-core composite monofilament is characterized by comprising the following steps:
PEN and LCP materials are blended and are prepared into uniform blended melt after being melted by a screw;
melting LCP material by a screw to prepare uniform LCP melt;
respectively feeding the blended melt and the LCP melt into a composite spinning box, and extruding the blended melt and the LCP melt through a composite spinning plate to obtain coiled filaments; wherein, the blended melt is sent into a composite spinning box through a dynamic online mixing and conveying device;
the winding wire is wound on the single-wire barrel after passing through a heat pipe sealing area, a constant temperature cooling area, a double-area oil feeding wheel, a hot plate wire guiding area and a multi-hot roller heat treatment area.
4. The method for preparing a novel sheath-core composite monofilament as claimed in claim 3, wherein the blend melt contains 70-85 wt% of PEN and 15-30 wt% of LCP.
5. A method for preparing a novel sheath-core composite monofilament as claimed in claim 3,
the step of blending PEN and LCP materials and preparing uniform blended melt after screw melting comprises the following steps: blending PEN and LCP materials, and extruding the mixture under the pressure of 15-30 MPa through screw melting to prepare a uniform blended melt;
wherein the melting temperature of the screw is 295-335 ℃.
6. The method for preparing a novel skin-core composite monofilament as claimed in claim 3, wherein the step of preparing a uniform LCP melt from LCP material after screw melting is specifically as follows: the LCP material is prepared into a uniform LCP melt after being melted by a screw, wherein the melting temperature of the screw is 285-340 ℃.
7. The method for preparing the novel sheath-core composite monofilament as claimed in claim 3, wherein the temperature in the spinning box is 320-345 ℃; the extrusion pressure of the composite spinning plate is 10-16 Mpa.
8. The preparation method of the novel sheath-core composite monofilament as claimed in claim 3, wherein the temperature of the heat pipe sealing area is 295-345 ℃; the temperature of the constant-temperature cooling area is 45-65 ℃; the rotating speed of the double-area oil loading wheel is 15-65 r/min; the temperature of the hot plate wire guiding area is 150-230 ℃; the number of rollers in the multi-hot roller heat treatment area is 18-26, and the temperature is 230-255 ℃; the rotating speed of the monofilament cylinder is 600-1200 m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551790.9A CN114150400A (en) | 2021-12-17 | 2021-12-17 | Novel sheath-core composite monofilament and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551790.9A CN114150400A (en) | 2021-12-17 | 2021-12-17 | Novel sheath-core composite monofilament and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114150400A true CN114150400A (en) | 2022-03-08 |
Family
ID=80451365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111551790.9A Pending CN114150400A (en) | 2021-12-17 | 2021-12-17 | Novel sheath-core composite monofilament and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114150400A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115772715A (en) * | 2022-12-01 | 2023-03-10 | 无锡金通高纤股份有限公司 | Degradable sheath-core composite monofilament and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6254987B1 (en) * | 1998-07-29 | 2001-07-03 | Johns Manville International, Inc. | Monofil bicomponent fibres of the sheath/core type |
-
2021
- 2021-12-17 CN CN202111551790.9A patent/CN114150400A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6254987B1 (en) * | 1998-07-29 | 2001-07-03 | Johns Manville International, Inc. | Monofil bicomponent fibres of the sheath/core type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115772715A (en) * | 2022-12-01 | 2023-03-10 | 无锡金通高纤股份有限公司 | Degradable sheath-core composite monofilament and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20220308 |