CN212360660U - Ultrahigh molecular weight polyethylene chain - Google Patents
Ultrahigh molecular weight polyethylene chain Download PDFInfo
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- CN212360660U CN212360660U CN202021719801.0U CN202021719801U CN212360660U CN 212360660 U CN212360660 U CN 212360660U CN 202021719801 U CN202021719801 U CN 202021719801U CN 212360660 U CN212360660 U CN 212360660U
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Abstract
The utility model discloses an ultra high molecular weight polyethylene's chain contains a plurality of chain links of interconnection, and each chain link contains 1-10 layers of circle ring strip, and the tip of circle ring strip is sewed up through the silk thread that is on a parallel with circle ring strip long limit direction and is fixed in on the chain link body that forms. The utility model discloses the chain of the ultra high molecular weight polyethylene that obtains of preparation has higher rupture strength, longer life.
Description
Technical Field
The utility model belongs to the technical field of synthetic fiber chain, concretely relates to chain that contains ultra high molecular weight polyethylene.
Background
Ultra-high molecular weight polyethylene (UHMWPE) is a fiber with highest specific strength and specific modulus in the world, has the specific strength which is more than ten times that of a steel wire with the same section, and has the advantages of stable size, low shrinkage, chemical corrosion resistance, good mechanical property, light weight and the like.
The existing rope core structure of the ultra-high molecular weight polyethylene mooring rope has two types of single-core twisted rope and multi-core parallel rope. However, a single-core twisted rope is unstable in the core structure, and is likely to twist when the mooring line is under tension. The rope core structure of the multi-core parallel rope is very loose, once the protective layer wrapped outside the multi-core parallel rope is damaged, the strength loss of the whole mooring rope is the sum of the strength losses of all the rope cores, and the mooring safety of the ocean platform is directly endangered; and the deviation of the lengths of the parallel cable cores caused by the manufacturing and coiling of the mooring cable is large, so that the strength of the mooring cable is reduced by more than 10%.
Patent CN101641532B discloses a chain comprising a plurality of interconnected chain loops, at least part of the chain loops comprise ultra-high molecular weight polyethylene (UHMWPE) fibers, and the loops of each loop of the chain loop are sewed together through the S-shaped wires of the silk thread to keep together, the utility model discloses an ultra-high molecular weight polyethylene chain can avoid the twisted rope of a single core to easily twist and the multi-core parallel rope core structure is very loose, if the breakage is very easy to directly endanger the safety of the mooring of the ocean platform, and the deviation of the lengths of the parallel rope cores caused by the two mooring ropes during the manufacturing and coiling is large, thereby causing the problem of the strength reduction of the mooring rope. But the S type in this utility model walks the sutural mode of line and can increase the side direction pulling force of chain link to greatly reduced chain link' S breaking strength. The two ends of the ribbon of the chain link in the prior art are generally sewn and fixed to the body of the chain link by using threads perpendicular to the long side direction of the ribbon, which also increases the lateral tension of the chain link and thus also reduces the breaking strength of the chain link. Therefore, there is an urgent need for an ultrahigh molecular weight polyethylene chain that can prevent the breaking strength of the ultrahigh molecular weight polyethylene chain from being affected by the processing method.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming among the prior art ultra high molecular weight polyethylene chain and causing its breaking strength to descend in the preparation process, provide one kind and can make its breaking strength furthest's the ultra high molecular weight polyethylene chain that obtains keeping to improved the breaking strength and the life of whole ultra high molecular weight polyethylene chain, environmental protection more reduces and makes, transports and accomodates the cost.
In order to achieve the above object, the present invention provides an ultra-high molecular weight polyethylene chain, wherein the chain comprises a plurality of interconnected chain rings, the chain rings comprise 1-10 layers of ultra-high molecular weight polyethylene ring belt strips, and the ends of the ring belt strips are sewn and fixed on the formed chain ring body through silk threads parallel to the long side direction of the ring belt strips.
The chain formed by a plurality of interconnected chain links has stable structure and is not easy to twist when being tensioned, thereby avoiding the reduction of breaking strength caused by the length deviation of each strand when the traditional rope and cable are manufactured and coiled; the requirement of different breaking strengths can be met by adjusting the width and the length of the ring strips and the number of the laminated layers of the ring strips, and the length of the chain is not limited because the chain is formed in a mode of buckling the rings. The end part of the ring belt is sewn and fixed on the formed chain ring body through the silk thread parallel to the long edge direction of the ring belt, so that the lateral tension caused by the adoption of the silk thread sewing and fixing mode perpendicular to the long edge direction of the belt in the prior art is avoided, and the breaking strength of the ultra-high molecular weight polyethylene chain is maintained to a greater extent.
Preferably, at least some of the loop strips of the chain loop are held together by stitching with threads parallel to the longitudinal direction of the loop strips.
Preferably, the filaments are ultra-high molecular weight polyethylene filaments.
The ring strips of each layer are sewn together through the silk threads parallel to the long side direction of the ring strips, so that the lateral tension caused by the traditional silk thread sewing mode is avoided, and the breaking strength of the ultra-high molecular weight polyethylene chain is maintained to the greater extent.
Preferably, the chain link is formed by parallelly laminating and encircling an ultra-high molecular weight polyethylene belt to form a chain link with 1-10 layers of ultra-high molecular weight polyethylene ring strips, and the end parts of the ring strips can be overlapped for a length in the long edge direction, or end to end or separated for a length.
Preferably, the chain has the same structure of each chain ring, so as to ensure the consistent breaking strength among the chain rings and to ensure the best breaking strength of the ultrahigh molecular weight polyethylene chain.
The chain ring made of the ultra-high molecular weight polyethylene ribbon has the advantages that the requirements of different breaking strengths can be met by adjusting the traction force of a main machine, the width and the length of the ribbon and the number of the laminated layers of the ring belt strips during the preparation of the ribbon, and the length of the chain is not limited because the chain is formed in a mode that the rings are buckled with each other.
Compared with the prior art, the technical scheme of the utility model has following advantage:
1. the chain structure of the ultra-high molecular weight polyethylene chain formed by a plurality of interconnected chain links is stable, and is not easy to twist when being tensioned, thereby avoiding the reduction of breaking strength caused by the length deviation of each strand of rope when the traditional rope and cable are manufactured and coiled; because the chain is formed in a mode of buckling rings, the length of the chain is not limited; compared with the traditional ultra-high molecular weight polyethylene rope, the flexibility is better.
2. When the width, the length and the number of the laminated layers of the ring belt strips of the ultra-high molecular weight polyethylene chain of the utility model are the same as those of the ultra-high molecular weight polyethylene chain in the prior art, the ultra-high molecular weight polyethylene chain has higher breaking strength and longer service life; when the same breaking strength and life's of needs preparation ultrahigh molecular weight polyethylene chain, the utility model discloses required ultrahigh molecular weight polyethylene material obviously still less than the required material of prior art, resources are saved, more green, and the ultrahigh molecular weight polyethylene chain quality that obtains of preparing is lighter, and the volume is littleer, reduces manufacturing, transportation and accomodates the cost.
3. The utility model discloses the strong requirement of different fracture is adapted to the range upon range of number of piles of host computer traction force, the width of ribbon and ring-shaped thing when well accessible adjustment ultra high molecular weight polyethylene ribbon preparation.
Drawings
Fig. 1 shows a first embodiment of the ultra-high molecular weight polyethylene chain of the present invention.
Fig. 2 is a second embodiment of the ultra-high molecular weight polyethylene chain of the present invention.
Fig. 3 shows a third embodiment of the ultra-high molecular weight polyethylene chain of the present invention.
Figure 4 is an ultra high molecular weight polyethylene chain prepared according to the process disclosed in CN 101641532B.
The reference numbers illustrate: 1-link a, 2-link b, 3-link c.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in order to provide a better understanding of the present invention to the public, certain specific details are set forth in the following detailed description of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details.
A ribbon, in the present invention, refers to a flexible elongated body having a thickness much smaller than its width, which ribbon is easily made by: the multifilament yarns are woven into any structure known in the art, such as a plain and/or twill weave structure.
The chain ring a1 shown in fig. 1 and 2 comprises 1-10 layers of ultra-high molecular weight polyethylene ring strip, the end of the ring strip is sewed and fixed on the formed chain ring a1 body by a thread parallel to the long side direction of the ring strip; the two ends of the loop strip shown in fig. 1 and 2 are overlapped in the longitudinal direction by a certain length, and may be end-to-end or separated by a certain length according to the specific situation; fig. 1 and 2 show a chain loop a1 formed of four layers of loop strip, but could have more or fewer layers, depending on the desired load bearing capacity; the individual links a1 shown in fig. 1 and 2 are of the same diameter, and the diameter of the link a1 may differ from case to case.
The chain ring b2 shown in fig. 2 and 3 comprises 1-10 layers of ultra-high molecular weight polyethylene ring strips, and the various layers of the chain ring b2 are sewn together by threads parallel to the long sides of the ring strips; the two ends of the loop strip shown in fig. 2 and 3 overlap in the longitudinal direction by a length, which may be end-to-end or separated by a length as the case may be; fig. 2 and 3 show a four-ply loop strap forming the chain loop b2, but there may be more or fewer plies, depending on the load-bearing capacity required. The individual chain rings b2 shown in fig. 2 and 3 are of the same diameter, as can the chain ring b2, as the case may be.
An ultra high molecular weight polyethylene chain a as shown in fig. 1, comprising a plurality of interconnected links a 1. The preparation method comprises the following steps: the method comprises the following steps: a strip of ultra-high molecular weight polyethylene ribbon is parallelly overlapped and encircled to form a chain ring a1 with 1-10 layers of ultra-high molecular weight polyethylene ring strips, and the end part of the ribbon is sewn and fixed on a formed chain ring a1 body through a thread parallel to the long side direction of the ring strips to form a first chain ring; step two: passing another ultra-high molecular weight polyethylene ribbon through the hollow first chain ring prepared in the step one, stacking and surrounding chain rings a1 of 1-10 layers of ultra-high molecular weight polyethylene ring bands in parallel, and sewing and fixing the end of the ribbon on the formed chain ring a1 body through threads parallel to the long side direction of the ring bands to prepare a second chain ring; step three: repeating the process of step two to prepare a chain comprising a plurality of interconnected links a 1.
The ultra-high molecular weight polyethylene chain B shown in fig. 2 comprises chain links a1 and B2 in any number ratio. The preparation method comprises the following steps: the method comprises the following steps: a strip of ultra-high molecular weight polyethylene ribbon is parallelly overlapped and encircled to form a chain ring a1 with 1-10 layers of ultra-high molecular weight polyethylene ring strips, and the end part of the ribbon is sewn and fixed on a formed chain ring a1 body through a thread parallel to the long side direction of the ring strips to form a first chain ring; step two: passing another ultra-high molecular weight polyethylene ribbon through the hollow of the first chain ring prepared in the step one, stacking and surrounding chain rings b2 of 1-10 layers of ultra-high molecular weight polyethylene ring strips in parallel, and sewing and keeping the various layers of the ring strips of the chain ring b2 together through threads parallel to the long side direction of the ring strips to prepare a second chain ring; step three: repeating the method of step two or step three, preparing a chain comprising a plurality of interconnected links a1 and b 2; the sequence of the step one and the step two can be changed at will, and the number of the step one and the step two can be combined at will.
An ultra high molecular weight polyethylene chain C as shown in fig. 3, comprising a plurality of interconnected chain links b 2. The preparation method comprises the following steps: the method comprises the following steps: a piece of ultra-high molecular weight polyethylene ribbon is parallelly overlapped and wound to form a chain ring b2 with 1-10 layers of ultra-high molecular weight polyethylene ring strips, and the various layers of ring strips of the chain ring b2 are sewn and held together through threads parallel to the long side direction of the ring strips to form a first chain ring; step two: passing another ultra-high molecular weight polyethylene ribbon through the hollow of the first chain ring prepared in the step one, stacking and surrounding chain rings b2 of 1-10 layers of ultra-high molecular weight polyethylene ring strips in parallel, and sewing and keeping the various layers of the ring strips of the chain ring b2 together through threads parallel to the long side direction of the ring strips to prepare a second chain ring; step three: repeating the process of step two to prepare a chain comprising a plurality of interconnected links b 2.
The chain A, the chain B and the chain C can be firstly formed by preparing a plurality of first chain rings through the step I and then connecting the plurality of first chain rings into the chain in a pairwise manner, wherein the specific pairwise connection mode of the first chain rings is as follows: a strip of ultra-high molecular weight polyethylene ribbon passes through the two first chain rings in a hollow mode, the chain rings of the ultra-high molecular weight polyethylene ring belt with 1-10 layers are wound in a parallel stacking mode, and the end portions of the ribbon are sewn and fixed on a formed chain ring body through threads parallel to the long side direction of the ring belt or are kept together in a mode of sewing threads parallel to the long side direction of the ring belt.
The number of the suture threads parallel to the long side direction of the loop tape can be selected according to specific situations.
The ultra-high molecular weight polyethylene chain D shown in fig. 4 comprises a plurality of interconnected chain links c3, wherein the chain link c3 comprises 1-10 layers of ultra-high molecular weight polyethylene loop strips, and the various layers of the chain links c3 are held together by sewing through S-shaped routing wires.
Fig. 1-4 show a chain link constructed of four layers of loop tape, but may have more or fewer layers, depending on the particular load and application conditions.
The invention will now be further elucidated by means of the following examples and comparative examples, which will compare the invention with the prior art according to chinese patent CN 101641532B.
The ultra-high molecular weight polyethylene chain A prepared by the method1、B1、C1And D1. Ultra-high molecular weight polyethylene chain A1、B1、C1And D1Specific examples of ultra high molecular weight polyethylene chains A, B, C and D, respectively. Ultra-high molecular weight polyethylene chain A1、B1、C1And D1The end parts of the ring strips are overlapped for a length in the long edge direction; each chain ring is composed of four layers of ring strips, and the diameter of each chain ring is the same; ultra-high molecular weight polyethylene chain A1、B1、C1、D1Is composed of 4 chain rings; wherein the ultra-high molecular weight polyethylene chain B1Are interconnected by a chain ring a1 and a chain ring b2 at intervals.
The ultra-high molecular weight polyethylene chains A1, B1, C1 and D1 prepared by the method have consistent length and width.
The first series of tests included chain A1、B1、C1、D1Tensile test of (2).
The second series of tests included testing under dry and humid conditions onUltra-high molecular weight polyethylene chain A1、B1、C1And D1Wear tests were performed.
The ultra-high molecular weight polyethylene chain A is subjected to a Zwick1484 universal tester at a temperature of about 21 ℃ and a speed of 100mm/min1、B1、C1、D1A tensile test was performed.
The Abrasion Test is carried out on a spoke wheel Abrasion tester Static Abrasion Test used in the rope and cable industry. The ultra-high molecular weight polyethylene chain A1、B1、C1And D1In contact with a rotating body (spoke wheel, diameter 0.15m) comprising 20 bars with a diameter of 15mm parallel to the rotation axis of the rotating body. The test can be carried out dry or wet, in the latter case requiring the orientation of the ultrahigh molecular weight polyethylene chains A in contact with the spoke wheel1、B1、C1And D1Water is continuously added into each part. The speed of the wheel is 2 r/s, and the ultra-high molecular weight polyethylene chain A1、B1、C1And D1The load of (2) was 6% of the breaking strength. The number of cycles until failure was recorded.
Example 1:
determination by DSM Dyneema B.V., the Netherlands
Ultrahigh molecular weight polyethylene chain A made of SK75 yarn1、B1、C1、D1Breaking load and breaking strength. Each chain has 4 chains of 16 and 1760dtex
Chain links made from SK75 yarn were tensile tested as above. The results are summarized in table 1.
Table 1: ultra-high molecular weight polyethylene chain A1、B1、C1、D1Tensile test results of
| Sample (I) | Weight (dtex) | Breaking load (N) | Breaking strength (cN/dtex) | Strain (%) |
| UHMWPE chain A1 | 56400 | 3282 | 5.82 | 3.3 |
| UHMWPE chain B1 | 56500 | 3220 | 5.71 | 3.4 |
| UHMWPE chain C1 | 56600 | 3096 | 5.49 | 3.3 |
| UHMWPE chain D1 | 56300 | 2714 | 4.82 | 3.2 |
From the above tensile test results, the following conclusions can be drawn: on the basis of the same weight, the ultra-high molecular weight polyethylene chain A of the utility model1、B1、C1Breaking strength ratio of ultra high molecular weight polyethylene chain D prepared according to prior art CN101641532B1The breaking strength is high.
Example 2:
testing by DSM Dyneema B.V
Ultrahigh molecular weight polyethylene dry chain A made of SK75 yarn1、B1、C1And D1Number of cycles to failure. Three chains were tested. Each chain has 4 chains of 16 1760dtex
Chain links made of SK75 yarn were subjected to wear testing as described above. The results are summarized in 2.
Table 2: ultra-high molecular weight polyethylene dry chain A1、B1、C1And D1Results of abrasion test
| Sample (I) | #1 | #2 | #3 | Mean value of |
| UHMWPE dry chain A1 | 846 | 831 | 817 | 831 |
| UHMWPE dry chain B1 | 852 | 871 | 862 | 861 |
| UHMWPE dry chain C1 | 841 | 826 | 830 | 832 |
| UHMWPE dry chain D1 | 572 | 591 | 601 | 588 |
From the above wear test results, the following conclusions can be drawn: according to the utility model discloses the dry chain A of ultra high molecular weight polyethylene that the preparation obtained1、B1And C1Compared with the method for preparing the ultra-high molecular weight polyethylene dry chain D according to the prior art CN101641532B1Has a significantly improved service life under dynamic loading conditions.
Example 3:
testing by DSM Dyneema B.V
Ultra-high molecular weight polyethylene wet chain A made of SK75 yarn1、B1、C1And D1Number of cycles to failure. Three chains were tested. Each chain has 4 chains of 16 1760dtex
Chain links made of SK75 yarn were subjected to wear testing as described above. The results are summarized in Table 3.
Table 3: ultra-high molecular weight polyethylene wet chain A1、B1、C1And D1Results of abrasion test
| Sample (I) | #1 | #2 | #3 | Mean value of |
| UHMWPE wet chain A1 | 2762 | 2683 | 2882 | 2775 |
| UHMWPE wet chain B1 | 2676 | 2732 | 2716 | 2708 |
| UHMWPE wet chain C1 | 2831 | 2762 | 2759 | 2784 |
| UHMWPE wet chain D1 | 1983 | 2004 | 1996 | 1994 |
From the above wear test results, the following conclusions can be drawn: according to the utility model discloses the wet chain A of ultra high molecular weight polyethylene that the preparation obtained1、B1And C1Compared with the method for preparing the ultra-high molecular weight polyethylene wet chain D according to the prior art CN101641532B1Has a significantly improved service life under dynamic loading conditions.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and those skilled in the art can make modifications and improvements without departing from the scope of the present invention.
Claims (5)
1. An ultra high molecular weight polyethylene chain comprising a plurality of interconnected links, said links comprising 1 to 10 layers of ultra high molecular weight polyethylene loop tape, the ends of said loop tape being attached to the formed link body by stitching with threads parallel to the long dimension of the loop tape.
2. The ultra-high molecular weight polyethylene chain according to claim 1, wherein at least some of the loop tapes of the chain link are held together by stitching with threads parallel to the long side of the loop tapes.
3. The ultra-high molecular weight polyethylene chain according to claim 2, wherein the filaments are ultra-high molecular weight polyethylene filaments.
4. The ultra-high molecular weight polyethylene chain according to claim 1, wherein the chain link is a chain link formed by winding a single ultra-high molecular weight polyethylene belt in parallel and in layers to form a loop of ultra-high molecular weight polyethylene belt having 1 to 10 layers, and both ends of the belt are overlapped in the longitudinal direction for a length, or are arranged end to end, or are separated from each other for a length.
5. The ultra-high molecular weight polyethylene chain according to claim 2, wherein each link structure of the chain is the same.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021853A (en) * | 2021-03-24 | 2021-06-25 | 哈尔滨复合材料设备开发有限公司 | Winding device and winding method for producing fiber composite material endless chain |
| CN113086760A (en) * | 2021-03-24 | 2021-07-09 | 哈尔滨复合材料设备开发有限公司 | Fiber composite material endless chain winding equipment and use method thereof |
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2020
- 2020-08-18 CN CN202021719801.0U patent/CN212360660U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021853A (en) * | 2021-03-24 | 2021-06-25 | 哈尔滨复合材料设备开发有限公司 | Winding device and winding method for producing fiber composite material endless chain |
| CN113086760A (en) * | 2021-03-24 | 2021-07-09 | 哈尔滨复合材料设备开发有限公司 | Fiber composite material endless chain winding equipment and use method thereof |
| CN113021853B (en) * | 2021-03-24 | 2022-09-02 | 哈尔滨复合材料设备开发有限公司 | Winding device and winding method for producing fiber composite material endless chain |
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