CN111058319A - Method for manufacturing high-strength ultrahigh molecular weight polyethylene fiber rope - Google Patents
Method for manufacturing high-strength ultrahigh molecular weight polyethylene fiber rope Download PDFInfo
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- CN111058319A CN111058319A CN201911358797.1A CN201911358797A CN111058319A CN 111058319 A CN111058319 A CN 111058319A CN 201911358797 A CN201911358797 A CN 201911358797A CN 111058319 A CN111058319 A CN 111058319A
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
- D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/201—Polyolefins
- D07B2205/2014—High performance polyolefins, e.g. Dyneema or Spectra
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Abstract
The embodiment of the application discloses a manufacturing method of a high-strength ultrahigh molecular weight polyethylene fiber rope. The manufacturing method comprises the following steps: selecting a plurality of ultra-high molecular weight polyethylene fibers with set specifications for primary twisting, applying tension with the strength of 0.034-0.104 g/tex to the ultra-high molecular weight polyethylene fibers in the primary twisting process, and performing primary twisting and heat setting treatment to obtain ultra-high molecular weight polyethylene rope yarns; re-twisting the ultra-high molecular weight polyethylene rope yarns, applying tension with the strength of 0.153-0.198 g/tex to the ultra-high molecular weight polyethylene rope yarns in the re-twisting process, and performing re-twisting and heat setting treatment to obtain ultra-high molecular weight polyethylene re-twisted rope strands; and weaving the ultra-high molecular weight polyethylene re-twisted rope strands into a rope, applying tension with the strength of 0.208-0.495 g/tex to the ultra-high molecular weight polyethylene re-twisted rope strands in the weaving process, and carrying out weaving and heat setting treatment.
Description
Technical Field
The application belongs to the technical field of fiber ropes, and particularly relates to a manufacturing method of a high-strength ultrahigh molecular weight polyethylene fiber rope.
Background
With the development and application of high-performance fibers, ultra-high molecular weight polyethylene fiber braided ropes are more and more widely used, and the manufacture of high-strength ultra-high molecular weight polyethylene braided ropes is one of the key technologies in the rope manufacturing industry at present.
The method improves the strength utilization rate of the ultra-high molecular weight polyethylene fiber in the rope, and is a key technology for manufacturing the high-strength ultra-high molecular weight polyethylene braided rope. At present, two methods are mainly used for improving the strength utilization rate of fibers in a rope, one method is to use a spring type tensioner in the rope manufacturing process, the spring type tensioner applies tension to the fibers by using a spring to enable the tightness of rope yarns and rope strands to be consistent, but the tension controlled by the currently used tensioner is relatively rough, the tension borne by the rope yarns and the rope strands cannot be accurately measured, and the tension cannot be uniformly controlled. The other method is to manufacture a rope with a parallel yarn structure, but the method for improving the fiber strength utilization rate by using the parallel yarn structure is only suitable for double-braided ropes and cannot be used for single-braided ropes.
Disclosure of Invention
In order to solve at least one of the above-mentioned technical problems of the prior art, an embodiment of the present application discloses a method for manufacturing a high-strength ultrahigh molecular weight polyethylene fiber rope, which includes:
selecting a plurality of ultra-high molecular weight polyethylene fibers with set specifications for primary twisting, applying tension with the strength of 0.034-0.104 g/tex to the ultra-high molecular weight polyethylene fibers in the primary twisting process, and performing primary twisting and heat setting treatment to obtain ultra-high molecular weight polyethylene rope yarns;
re-twisting the ultra-high molecular weight polyethylene rope yarns, applying tension with the strength of 0.153-0.198 g/tex to the ultra-high molecular weight polyethylene rope yarns in the re-twisting process, and performing re-twisting and heat setting treatment to obtain ultra-high molecular weight polyethylene re-twisted rope strands;
and weaving the ultra-high molecular weight polyethylene re-twisted rope strands into a rope, applying tension with the strength of 0.208-0.495 g/tex to the ultra-high molecular weight polyethylene re-twisted rope strands in the weaving process, and carrying out weaving and heat setting treatment.
Further, some embodiments disclose the method for manufacturing the high-strength ultrahigh molecular weight polyethylene fiber rope, wherein the temperature of the first twist heat setting treatment is set to 40-70 ℃.
Some embodiments disclose a method for manufacturing a high-strength ultra-high molecular weight polyethylene fiber rope, wherein the temperature of the second twisting and heat setting treatment is set to be 40-70 ℃.
Some embodiments disclose a method for manufacturing a high-strength ultra-high molecular weight polyethylene fiber rope, wherein the temperature of the weaving heat setting treatment is set to be 40-70 ℃.
Further, some embodiments disclose methods for making a high strength ultra-high molecular weight polyethylene fiber rope, wherein the tension of each ultra-high molecular weight polyethylene fiber is controlled to be equal during the first twisting process.
Some embodiments disclose methods for making high strength ultra-high molecular weight polyethylene fiber rope, wherein the tension of each ultra-high molecular weight polyethylene rope is controlled to be equal during the re-twisting process.
Some embodiments disclose methods for manufacturing a high strength ultra-high molecular weight polyethylene fiber rope, wherein the tension of each of the multi-twisted strands of ultra-high molecular weight polyethylene is controlled to be equal during the weaving process.
Further, some embodiments disclose a method for manufacturing a high strength ultra-high molecular weight polyethylene fiber rope, in which the first twist heat setting process and the process of applying tension to the ultra-high molecular weight polyethylene fiber are performed simultaneously.
Some embodiments disclose a method for manufacturing a high strength ultra-high molecular weight polyethylene fiber rope, wherein a double twisting heat setting process is performed simultaneously with a process of applying tension to ultra-high molecular weight polyethylene rope yarns.
Some embodiments disclose a method for manufacturing a high strength ultra high molecular weight polyethylene fiber rope, wherein a braiding heat-setting process is performed simultaneously with a process of applying tension to an ultra high molecular weight polyethylene twisted strand.
According to the manufacturing method of the high-strength ultrahigh molecular weight polyethylene fiber rope, accurate tension control is performed in the process of weaving the fiber primary twist, the rope yarn secondary twist and the rope strand into the rope in the rope manufacturing process, and appropriate heat treatment is performed, so that the utilization rate of the fiber strength in the ultrahigh molecular weight polyethylene woven rope is effectively improved, and the manufacturing method is suitable for manufacturing the high-strength ultrahigh molecular weight polyethylene single braided rope and double braided ropes.
Detailed Description
The word "embodiment" as used herein, is not necessarily to be construed as preferred or advantageous over other embodiments, including any embodiment illustrated as "exemplary". Performance index tests in the examples of this application, unless otherwise indicated, were performed using routine experimentation in the art. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; other test methods and techniques not specifically mentioned in the present application are those commonly employed by those of ordinary skill in the art.
The terms "substantially" and "about" are used throughout this disclosure to describe small fluctuations. For example, they may mean less than or equal to ± 5%, such as less than or equal to ± 2%, such as less than or equal to ± 1%, such as less than or equal to ± 0.5%, such as less than or equal to ± 0.2%, such as less than or equal to ± 0.1%, such as less than or equal to ± 0.05%. Concentrations, amounts, and other numerical data may be expressed or presented herein in a range format. Such range format is used merely for convenience and brevity and thus should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a numerical range of "1 to 5%" should be interpreted to include not only the explicitly recited values of 1% to 5%, but also include individual values and sub-ranges within the indicated range. Thus, included in this numerical range are individual values, such as 2%, 3.5%, and 4%, and sub-ranges, such as 1% to 3%, 2% to 4%, and 3% to 5%, etc. This principle applies equally to ranges reciting only one numerical value. Moreover, such an interpretation applies regardless of the breadth of the range or the characteristics being described.
In this disclosure, including the claims, all conjunctions such as "comprising," including, "" carrying, "" having, "" containing, "" involving, "" containing, "and the like are to be understood as being open-ended, i.e., to mean" including but not limited to. Only the conjunctions "consisting of … …" and "consisting of … …" are closed conjunctions.
In the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In the examples, some methods, means, instruments, apparatuses, etc. known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application. On the premise of no conflict, the technical features disclosed in the embodiments of the present application may be combined arbitrarily, and the obtained technical solution belongs to the content disclosed in the embodiments of the present application.
In some embodiments, a method of making a high strength ultra high molecular weight polyethylene fiber rope comprises: selecting a plurality of ultra-high molecular weight polyethylene fibers with set specifications for primary twisting, applying tension with the strength of 0.034-0.104 g/tex to the ultra-high molecular weight polyethylene fibers in the primary twisting process, and performing primary twisting and heat setting treatment to obtain ultra-high molecular weight polyethylene rope yarns; re-twisting the ultra-high molecular weight polyethylene rope yarns, applying tension with the strength of 0.153-0.198 g/tex to the ultra-high molecular weight polyethylene rope yarns in the re-twisting process, and performing re-twisting and heat setting treatment to obtain ultra-high molecular weight polyethylene re-twisted rope strands; and weaving the ultra-high molecular weight polyethylene re-twisted rope strands into a rope, applying tension with the strength of 0.208-0.495 g/tex to the ultra-high molecular weight polyethylene re-twisted rope strands in the weaving process, and carrying out weaving and heat setting treatment.
Usually, in the process of forming rope yarn by primarily twisting the ultra-high molecular weight polyethylene fibers, proper tension is applied to the fibers so as to well control the structure and the tightness of the fibers, and under the same tension adjustment, each fiber obtains the same tension to form fibers with the consistent tightness, so that the rope yarn with uniform structure can be formed by a plurality of fibers in the twisting process; the fibers are further subjected to heat treatment in the tension control process, so that molecules in the fibers obtain sufficient movement capacity, the fibers stretch moderately under the action of tension, a plurality of fibers in the rope yarns obtain the same degree of tightness, partial fibers in the rope yarns are distributed more uniformly, the strength of each fiber in the rope yarns is utilized properly, and the overall strength of the rope yarns is improved.
In an alternative embodiment, the temperature of the first twist heat setting treatment is set to 40 to 70 ℃.
As an alternative, the tension of each ultra-high molecular weight polyethylene fiber is controlled to be equal during the primary twisting process. Further preferably, the tension applied to each fiber is controlled to be between 0.034 and 0.104 g/tex.
As an alternative embodiment, the process of primary twist heat setting and the process of applying tension to the ultra-high molecular weight polyethylene fibers are carried out simultaneously, so that the fibers are subjected to tension at an elevated temperature for adjustment, the movement of molecules in the fibers is facilitated, the integrity of the fiber structure is maintained, and the tension adjustment efficiency can also be improved. As the heat-setting treatment, for example, heating in an oven or a heated roll can be selected.
Usually, in the process of forming a re-twisted rope strand by re-twisting ultra-high molecular weight polyethylene rope yarns, proper tension is applied to the rope yarns so as to well control the structure and the tightness of the rope yarns, under the same tension adjustment, each rope yarn obtains the same tension to form rope yarns with the consistent tightness, and simultaneously, each fiber in the rope yarns is further adjusted, so that a plurality of rope yarns can form the re-twisted rope strand with a uniform structure in the twisting process; and further, the rope yarns are subjected to heat treatment in the tension control process, so that molecules in the rope yarn fibers obtain sufficient movement capacity, part of the fibers in the rope yarns are properly extended under the action of tension, the rope yarns in the twisted rope strands obtain the same degree of tightness, the structures tend to be consistent, the fibers in the rope strands are more uniformly distributed, the strength of each rope yarn in the rope strands and each fiber in the rope yarns are properly utilized, and the overall strength of the rope strands is improved.
In an alternative embodiment, the temperature of the second twist heat setting treatment is set to 40 to 70 ℃.
As an alternative embodiment, the tension of each ultra-high molecular weight polyethylene rope yarn is controlled to be equal in the double twisting process. Further, as an optional embodiment, tension with the strength of 0.153-0.198 g/tex is applied to each rope yarn in the double twisting process.
As an alternative, the double-twist heat-setting treatment is performed simultaneously with the process of applying tension to the ultra-high molecular weight polyethylene rope yarns, so that each fiber in the rope yarns is subjected to tension at an elevated temperature to adjust, thereby facilitating the movement of molecules in the fiber, maintaining the integrity of the fiber structure and improving the tension adjustment efficiency. As the heat-setting treatment, for example, heating in an oven or a heated roll can be selected.
Usually, in the process of braiding the ultra-high molecular weight polyethylene re-twisted strands into a rope, applying appropriate tension to the re-twisted strands so as to well control the structure and the tightness of the re-twisted strands, under the same tension adjustment, each re-twisted strand obtains the same tension to form re-twisted strands with the same tightness, further adjusting each fiber in the re-twisted strands, and facilitating a plurality of strands to form a braided rope with a uniform structure in the braiding process; the heat treatment is further carried out on the re-twisted rope strands in the process of tension control, so that molecules in the fibers of the re-twisted rope strands obtain sufficient movement capacity, part of fibers in the re-twisted rope strands are moderately extended under the action of tension, the re-twisted rope strands all obtain the same degree of tightness, the structures tend to be consistent, a braided rope with more uniformly distributed rope strands is obtained after the rope is braided, the strength of each rope strand in the braided rope, each rope yarn in each rope strand and each fiber in each rope yarn are properly utilized, and the overall strength of the braided rope is improved.
In an alternative embodiment, the temperature of the knitting heat-setting treatment is set to 40 to 70 ℃.
As an alternative, the tension of each of the re-twisted strands of ultra-high molecular weight polyethylene is controlled to be equal during weaving. Further, as a more preferable embodiment, the tension applied to each of the multiple twisted strands during the weaving process is controlled to be between 0.208 and 0.495 g/tex.
As an alternative, the braiding heat-setting process is performed simultaneously with the process of applying tension to the ultra-high molecular weight polyethylene twisted strand.
The method for manufacturing the high-strength ultrahigh molecular weight polyethylene fiber rope can be used for manufacturing the high-strength ultrahigh molecular weight polyethylene fiber single-braided rope and can also be used for manufacturing the high-strength ultrahigh molecular weight polyethylene fiber double-braided rope. Other processes and conditions for weaving the high-strength ultrahigh molecular weight polyethylene fiber rope disclosed in the embodiment of the application can be selected according to technical schemes in the field.
The technical details are further illustrated in the following examples.
Example 1
The method for manufacturing the high-strength ultrahigh molecular weight polyethylene fiber rope disclosed in embodiment 1 comprises the following steps:
selecting a plurality of ultra-high molecular weight polyethylene fibers with the specification of 1600D and the strength of 32g/D for primary twisting, carrying out 9-ring closing twisting on a 250-ring twisting machine to form rope yarns, and applying tension of 0.054g/tex to each ultra-high molecular weight polyethylene fiber;
re-twisting the ultra-high molecular weight polyethylene rope yarns, performing 5-strand re-twisting on a 722-type ring twisting machine to prepare rope strands, and applying tension with the strength of 0.170g/tex to each ultra-high molecular weight polyethylene rope yarn;
weaving the ultra-high molecular weight polyethylene re-twisted rope strands into ropes, weaving the ropes by using a single-weaving machine with the model of 320-12 to manufacture twelve strands of ultra-high molecular weight polyethylene single-woven ropes, and applying tension with the strength of 0.310g/tex to each ultra-high molecular weight polyethylene re-twisted rope strand in the weaving process;
the twelve strands of ultra-high molecular weight polyethylene single-braided ropes obtained had a rope breaking strength of 200.00kN, a rope strength of 19.37g/d and a rope linear density of 117.00 g/m.
Example 2
Embodiment 2 discloses a method for manufacturing a high-strength ultrahigh molecular weight polyethylene fiber rope, including:
selecting a plurality of ultra-high molecular weight polyethylene fibers with the specification of 1600D and the strength of 32g/D for primary twisting, carrying out 9-ring closing twisting on a 250-ring twisting machine to form rope yarns, applying tension of 0.054g/tex to each ultra-high molecular weight polyethylene fiber, and carrying out heat setting treatment at 60 ℃;
re-twisting the ultra-high molecular weight polyethylene rope yarns, re-twisting 5 strands on a 722-type ring twister to prepare rope strands, applying tension with the strength of 0.170g/tex to each ultra-high molecular weight polyethylene rope yarn, and performing heat setting treatment at 60 ℃;
weaving the ultra-high molecular weight polyethylene re-twisted strands into ropes, weaving the ropes by using a single-weaving machine with the model of 320-12 to manufacture twelve strands of ultra-high molecular weight polyethylene single-woven ropes, applying tension with the strength of 0.310g/tex to each ultra-high molecular weight polyethylene re-twisted strand in the weaving process, and carrying out heat setting treatment at the temperature of 60 ℃;
the obtained twelve strands of ultra-high molecular weight polyethylene single-braided ropes have the breaking strength of 214.73kN, the strength of 20.80g/d and the linear density of 117.01 g/m.
Comparative example 1
Comparative example 1 discloses a method for manufacturing a high strength ultra high molecular weight polyethylene fiber rope, comprising:
selecting a plurality of ultra-high molecular weight polyethylene fibers with the specification of 1600D and the strength of 32g/D for primary twisting, and performing 9-ring closing twisting on a 250-ring twisting machine to form rope yarns;
re-twisting the ultra-high molecular weight polyethylene rope yarns, and performing 5-strand re-twisting on a 722-type ring twisting machine to prepare a strand;
weaving the strands of the ultrahigh molecular weight polyethylene re-twisted into ropes, and weaving the ropes by using a single-knitting machine with the model of 320-12 to manufacture twelve strands of the ultrahigh molecular weight polyethylene single-braided ropes;
the obtained twelve strands of ultra-high molecular weight polyethylene single-braided ropes have the breaking strength of 165.18kN, the strength of 16.00g/d and the linear density of 117.03 g/m.
TABLE 1 comparative table of properties of ultra-high molecular weight polyethylene fiber ropes of examples 1-2 and comparative example 1
Table 1 is a comparison table of the properties of the ultra-high molecular weight polyethylene fiber ropes of examples 1 to 2 and comparative example 1, and the fiber strength utilization ratio is the ratio of the fiber strand strength to the theoretical strength of the fiber strand. As is clear from table 1, the breaking strength of the rope produced in example 1 is 1.21 times that of the rope of comparative example 1; the breaking strength of the rope prepared in example 2 is 1.30 times of that of the rope prepared in comparative example 1, and the test on the breaking strength of the strands shows that the breaking strength of the strands prepared in examples 1 and 2 is respectively improved by 7% and 9% compared with that of the strands prepared in comparative example 1, which shows that the strength utilization rate of the ultra-high molecular weight polyethylene fibers is effectively improved and the breaking strength of the rope is obviously improved after the ultra-high molecular weight polyethylene fibers are braided into the rope by using the preparation method disclosed in the examples of the application.
According to the manufacturing method of the high-strength ultrahigh molecular weight polyethylene fiber rope, accurate tension control is performed in the process of weaving the fiber primary twist, the rope yarn secondary twist and the rope strand into the rope in the rope manufacturing process, and appropriate heat treatment is performed, so that the utilization rate of the fiber strength in the ultrahigh molecular weight polyethylene woven rope is effectively improved, and the manufacturing method is suitable for manufacturing the high-strength ultrahigh molecular weight polyethylene single braided rope and double braided ropes.
The technical solutions and the technical details disclosed in the embodiments of the present application are only examples to illustrate the concept of the present application, and do not constitute a limitation to the technical solutions of the present application, and all the inventive changes that are made to the technical details disclosed in the present application without inventive changes have the same inventive concept as the present application, and are within the protection scope of the claims of the present application.
Claims (10)
1. A method for manufacturing a high-strength ultrahigh molecular weight polyethylene fiber rope is characterized by comprising the following steps:
selecting a plurality of ultra-high molecular weight polyethylene fibers with set specifications for primary twisting, applying tension with the strength of 0.034-0.104 g/tex to the ultra-high molecular weight polyethylene fibers in the primary twisting process, and performing primary twisting and heat setting treatment to obtain ultra-high molecular weight polyethylene rope yarns;
re-twisting the ultra-high molecular weight polyethylene rope yarns, applying tension with the strength of 0.153-0.198 g/tex to the ultra-high molecular weight polyethylene rope yarns in the re-twisting process, and performing re-twisting and heat setting treatment to obtain ultra-high molecular weight polyethylene re-twisted rope strands;
and weaving the ultra-high molecular weight polyethylene re-twisted rope strands into a rope, applying tension with the strength of 0.208-0.495 g/tex to the ultra-high molecular weight polyethylene re-twisted rope strands in the weaving process, and carrying out weaving and heat setting treatment.
2. The method for producing a high-strength ultrahigh molecular weight polyethylene fiber rope according to claim 1, wherein the temperature of the first twist heat setting treatment is set to 40 to 70 ℃.
3. The method for producing a high-strength ultrahigh molecular weight polyethylene fiber rope according to claim 1, wherein the temperature of the double twist heat setting treatment is set to 40 to 70 ℃.
4. The method for producing a high-strength ultrahigh molecular weight polyethylene fiber rope according to claim 1, wherein the temperature of the braiding heat-setting treatment is set to 40 to 70 ℃.
5. The method of claim 1, wherein the tension of each ultra-high molecular weight polyethylene fiber is controlled to be equal during the first twisting.
6. The method of claim 1, wherein the tension of each ultra-high molecular weight polyethylene rope is controlled to be equal during the double twisting process.
7. A method of making a high strength ultra high molecular weight polyethylene fiber rope as claimed in claim 1, characterized in that the tension of each of the multi-twisted strands of ultra high molecular weight polyethylene is controlled to be equal during the braiding.
8. A method of making a high strength ultra high molecular weight polyethylene fiber rope according to claim 1, wherein said first twist heat setting treatment is performed simultaneously with the process of applying tension to the ultra high molecular weight polyethylene fibers.
9. A method of making a high strength ultra high molecular weight polyethylene fiber rope according to claim 1, wherein said double twist heat setting treatment is performed simultaneously with the process of applying tension to the ultra high molecular weight polyethylene rope yarns.
10. A method of manufacturing a high strength ultra high molecular weight polyethylene fiber rope according to claim 1, characterized in that the braiding heat-setting process is performed simultaneously with the process of applying tension to the ultra high molecular weight polyethylene twisted strands.
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| CN111058319B (en) | 2021-12-14 |
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