Scratch-resistant, high-temperature-resistant and chemical-corrosion-resistant dust-free drag chain cable and preparation method thereof

Abstract

The invention discloses a scratch-resistant, high-temperature-resistant and chemical-corrosion-resistant dust-free drag chain cable and a preparation method, the drag chain cable comprises a scratch-resistant outer sheath, an inner sheath and a cable core which are sequentially arranged from outside to inside, and the cable core comprises a central hose and a plurality of wire cores. The inner sheath and the scratch-resistant outer sheath are extruded outside the cable core, the inner sheath is made of maleic anhydride grafted polyolefin, the scratch-resistant outer sheath is made of polyamide 66 and glass fibers, the scratch-resistant performance is excellent, the polyamide 66 and anhydride groups in the maleic anhydride grafted polyolefin can be subjected to a dehydration reaction through heating of a drying oven, covalent bonds are formed, and the scratch-resistant performance is good. According to the drag chain cable, the interlayer compatibility can be remarkably enhanced, the mechanical property of the cable is improved, and the obtained drag chain cable not only has multiple excellent properties such as scratch resistance, high temperature resistance and chemical corrosion resistance, but also is dust-free, meets the cleanliness requirement of ISO 14644-1 Class 5 and above, and is simple in overall structure, simple and convenient in preparation process and suitable for industrial popularization and application.

Description

Technical Field

[0001] This invention belongs to the field of cable technology, specifically relating to a scratch-resistant, high-temperature-resistant, and chemically corrosion-resistant dust-free drag chain cable and its preparation method. Background Technology

[0002] With the increasing prevalence of cleanroom environments in industries such as semiconductors and biomedicine, traditional drag chain cables have revealed the following technical challenges: 1) Insufficient scratch resistance: The outer sheath of the cable rubs against the metal guide groove during the reciprocating motion of the cable chain. Ordinary polyvinyl chloride (PVC), thermoplastic elastomer (TPE) and other sheath materials are easily worn off, resulting in a shortened cable life and dust generation. 2) High temperature failure: When the equipment is running at high speed, the internal temperature of the cable can rise to over 120°C. Conventional polyethylene (PE) and polyvinyl chloride (PVC) insulation layers are prone to softening and deformation under long-term high temperature, which can lead to short circuit risk. 3) Chemical corrosion: When in contact with cutting fluid, lubricating oil or acid and alkali cleaning agents, the sheath material is prone to swelling and cracking, resulting in a decrease in insulation performance; 4) Dust pollution: Wear debris from the sheath and exudates from the material itself pollute the cleanroom environment, making it difficult to meet the cleanliness requirements of ISO14644-1 Class 5 and above.

[0003] Based on this, the present invention discloses a scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable and its preparation method. Summary of the Invention

[0004] To address the problems in the prior art, the present invention aims to provide a scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable and its preparation method.

[0005] To achieve the above objectives and technical effects, the technical solution adopted by this invention is as follows: A scratch-resistant, high-temperature resistant, and chemically corrosion resistant dust-free drag chain cable includes a scratch-resistant outer sheath, an inner sheath, and a cable core arranged sequentially from the outside to the inside. The cable core includes a central flexible tube and several wire cores.

[0006] Furthermore, the scratch-resistant outer sheath and inner sheath are flat structures, and the wire core is a circular structure.

[0007] Furthermore, the cable core includes a central flexible tube and two wire cores symmetrically arranged on both sides of the central flexible tube.

[0008] Furthermore, each core includes an outer sheath, an inner sheath, an anti-interference aluminum-plastic composite strip, and a conductor group arranged sequentially from the outside to the inside. The conductor group includes several conductor units, and cotton thread is filled in the gaps between the conductor units.

[0009] Furthermore, each conductor unit includes a stranded Class 5 conductor and an insulating layer extruded over the stranded Class 5 conductor.

[0010] This invention also discloses a method for preparing a scratch-resistant, high-temperature-resistant, and chemically-resistant dust-free drag chain cable, comprising the following steps: Step 1: Prepare the wire core; Step 2: Place the wire core and the central flexible tube as required, and twist them together to form the cable core; Step 3: Extrude the inner sheath onto the outside of the cable core to obtain a dust-free drag chain cable semi-finished product; Step 4: Heat the semi-finished dust-free drag chain cable obtained in Step 3, and extrude a scratch-resistant outer sheath onto the outside of the semi-finished dust-free drag chain cable. Step 5: Heat the product obtained in Step 4, then slowly cool it to finally obtain the desired scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable.

[0011] Furthermore, in step one, the steps for preparing the wire core include: Insulation layers are extruded over stranded Class 5 conductors to obtain conductor units. Cotton thread is filled in the gaps between conductor units. Every four conductor units are stranded to form a conductor group. Then, anti-interference aluminum-plastic composite tape, an extruded inner sheath, and an extruded outer sheath are sequentially wrapped around the conductor group to obtain the wire core.

[0012] Furthermore, in step three, the inner sheath is made of maleic anhydride-grafted polyolefin.

[0013] Furthermore, in step four, the dust-free drag chain cable semi-finished product obtained in step three is heated in a high-temperature oven at 100~250℃. The scratch-resistant outer sheath is made of polyamide 66 and glass fiber. Polyamide 66 can undergo a dehydration reaction with the anhydride groups in maleic anhydride-grafted polyolefin to form covalent bonds.

[0014] Furthermore, in step five, the product obtained in step four is heated in a high-temperature oven at 300~320℃.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention discloses a scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable and its preparation method. The drag chain cable includes a scratch-resistant outer sheath, an inner sheath, and a cable core arranged sequentially from the outside to the inside. The cable core includes a central flexible tube and several wire cores. The inner sheath is made of maleic anhydride-grafted polyolefin, and the scratch-resistant outer sheath is made of polyamide 66 and glass fiber, which helps to improve the scratch resistance of the cable. By heating in an oven, polyamide 66 can undergo a dehydration reaction with the anhydride groups in the maleic anhydride-grafted polyolefin to form covalent bonds, which can significantly enhance interlayer compatibility and improve the mechanical properties of the cable. The resulting drag chain cable not only has multiple excellent properties such as scratch resistance, high-temperature resistance, and chemical corrosion resistance, but is also dust-free, meeting the cleanliness requirements of ISO 14644-1 Class 5 and above. The overall structure is simple, the preparation process is convenient, and it is suitable for industrial promotion and use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0017] The present invention will now be described in detail so that its advantages and features can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0018] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0019] like Figure 1 As shown, this invention discloses a scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable, comprising a scratch-resistant outer sheath 1, an inner sheath 2, and a cable core arranged sequentially from the outside to the inside. The cable core includes a central flexible tube 3 twisted together and several wire cores. Each wire core includes an outer sheath 4, an inner sheath 5, an anti-interference aluminum-plastic composite tape 6, and a conductor group arranged sequentially from the outside to the inside. The conductor group includes several conductor units. Each conductor unit includes a stranded type 5 conductor 7 and an insulation layer 8 extruded outside the stranded type 5 conductor 7. The gaps between the conductor units are filled with cotton thread 9.

[0020] This invention also discloses a method for preparing a scratch-resistant, high-temperature-resistant, and chemically-resistant dust-free drag chain cable, comprising the following steps: Step 1: Preparing the wire core An insulation layer 8 is extruded over the outside of stranded Class 5 conductors 7 to obtain conductor units. Cotton thread 9 is filled in the gaps between conductor units. Several conductor units are stranded to form a conductor group. Then, an anti-interference aluminum-plastic composite tape 6, an extruded inner sheath 5, and an extruded outer sheath 4 are sequentially wrapped around the outside of the conductor group to obtain the wire core. Step 2: Place the wire core and the central flexible tube 3 as required, and twist them together to form the cable core; Step 3: Extrude the inner sheath 2 around the outside of the cable core to obtain a dust-free drag chain cable semi-finished product; Step 4: Heat the semi-finished dust-free drag chain cable obtained in Step 3 through a high-temperature oven at 100~250℃, and extrude a scratch-resistant outer sheath 1 onto the outside of the semi-finished dust-free drag chain cable. Step 5: Heat the product obtained in Step 4 in a 300~320℃ high-temperature oven for a short time, and then cool it slowly to finally obtain the desired scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable.

[0021] In this invention, the scratch-resistant outer sheath 1 is made of PEEK and polyamide 66.

[0022] In this invention, the inner sheath 2 is made of maleic anhydride-grafted polyolefin (POE-g-MAH). Under high temperature and screw shearing, the anhydride groups (such as maleic anhydride) in the maleic anhydride-grafted polyolefin undergo a dehydration reaction with the amino groups at the end of the polyamide 66 molecule to form amide bonds or imide bonds, generating a graft copolymer. This chemical bonding significantly enhances the compatibility between the two phases and improves the mechanical properties of the material.

[0023] In this invention, the central flexible tube 3 is made of polyurethane, polyvinyl chloride, silicone, or polytetrafluoroethylene.

[0024] In this invention, the outer protective layer 4 is made of polyamide 66 and glass fiber.

[0025] In this invention, the inner protective layer 5 is made of polyvinyl chloride sheath material.

[0026] In this invention, the insulating layer 8 is made of TPEE insulating material.

[0027] Example 1 like Figure 1 As shown, a scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable includes a scratch-resistant outer sheath 1, an inner sheath 2, and a cable core arranged sequentially from the outside to the inside. The cable core includes a central flexible tube 3 and two wire cores symmetrically arranged on both sides of the central flexible tube 3. Each wire core includes an outer sheath 4, an inner sheath 5, an anti-interference aluminum-plastic composite tape 6, and a conductor group arranged sequentially from the outside to the inside. The conductor group includes four conductor units. Each conductor unit includes a stranded Class 5 conductor 7 and an insulation layer 8 extruded on the outside of the stranded Class 5 conductor 7. The gaps between the conductor units are filled with cotton thread 9.

[0028] A method for preparing a scratch-resistant, high-temperature-resistant, and chemically-resistant dust-free drag chain cable includes the following steps: Step 1: Preparing the wire core An insulation layer 8 is extruded over the stranded Class 5 conductor 7 to obtain a conductor unit. Cotton thread 9 is filled in the gaps between the conductor units. Every four conductor units are stranded to form a conductor group. Then, an anti-interference aluminum-plastic composite tape 6, an extruded inner sheath 5, and an extruded outer sheath 4 are sequentially wrapped around the conductor group to obtain the wire core. Step 2: Arrange the wire cores symmetrically on both sides of the central flexible tube 3 and twist them together to form the cable core; Step 3: Extrude the inner sheath 2 around the outside of the cable core to obtain a dust-free drag chain cable semi-finished product; Step 4: Heat the semi-finished dust-free drag chain cable obtained in Step 3 through a 200°C instantaneous high-temperature oven, and extrude a scratch-resistant outer sheath 1 onto the outside of the semi-finished dust-free drag chain cable. Step 5: Heat the product obtained in Step 4 in a 300℃ instantaneous high-temperature oven, and then cool it slowly to finally obtain the desired scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable.

[0029] In this embodiment, the scratch-resistant outer sheath 1 is made of PEEK and polyamide 66 (weight ratio 1:1).

[0030] In this invention, the inner sheath 2 is made of maleic anhydride-grafted polyolefin (POE-g-MAH). Under high temperature and screw shearing, the anhydride groups (such as maleic anhydride) in the maleic anhydride-grafted polyolefin undergo a dehydration reaction with the amino groups at the end of the polyamide 66 molecule to form amide bonds or imide bonds, generating a graft copolymer. This chemical bonding significantly enhances the compatibility between the two phases and improves the mechanical properties of the material.

[0031] In this invention, the central hose 3 is made of polyurethane, polyvinyl chloride, silicone, and polytetrafluoroethylene (weight ratio 1:1:1:1).

[0032] In this invention, the outer protective layer 4 is made of polyamide 66 and glass fiber (weight ratio 1:1).

[0033] In this invention, the inner protective layer 5 is made of polyvinyl chloride sheath material.

[0034] In this invention, the insulating layer 8 is made of TPEE insulating material.

[0035] Any parts or structures not specifically described in this invention can be made using existing technologies or products, and will not be elaborated upon here.

[0036] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A scratch-resistant, high-temperature-resistant, and chemically corrosion-resistant dust-free drag chain cable, characterized in that, It includes a scratch-resistant outer sheath, an inner sheath, and a cable core arranged sequentially from the outside to the inside. The cable core includes a central flexible tube and several wire cores.

2. The scratch-resistant, high-temperature-resistant, and chemically-resistant dust-free drag chain cable according to claim 1, characterized in that, The scratch-resistant outer sheath and inner sheath are flat, and the wire core is circular.

3. The scratch-resistant, high-temperature-resistant, and chemically-resistant dust-free drag chain cable according to claim 1, characterized in that, The cable core includes a central flexible tube and two wire cores symmetrically arranged on both sides of the central flexible tube.

4. The scratch-resistant, high-temperature-resistant, and chemically-resistant dust-free drag chain cable according to claim 3, characterized in that, Each core includes an outer sheath, an inner sheath, an anti-interference aluminum-plastic composite strip, and a conductor group arranged sequentially from the outside to the inside. The conductor group includes several conductor units, and cotton thread is filled in the gaps between the conductor units.

5. The scratch-resistant, high-temperature-resistant, and chemically-resistant dust-free drag chain cable according to claim 4, characterized in that, Each conductor unit comprises a stranded Class 5 conductor and an insulation layer extruded over the stranded Class 5 conductor.

6. A method for preparing a scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Prepare the wire core; Step 2: Place the wire core and the central flexible tube as required, and twist them together to form the cable core; Step 3: Extrude the inner sheath onto the outside of the cable core to obtain a dust-free drag chain cable semi-finished product; Step 4: Heat the semi-finished dust-free drag chain cable obtained in Step 3, and extrude a scratch-resistant outer sheath onto the outside of the semi-finished dust-free drag chain cable. Step 5: Heat the product obtained in Step 4, then slowly cool it to finally obtain the desired scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable.

7. The method for preparing a scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable according to claim 6, characterized in that, Step one, the steps for preparing the wire core include: Insulation layers are extruded over stranded Class 5 conductors to obtain conductor units. Cotton thread is filled in the gaps between conductor units. Every four conductor units are stranded to form a conductor group. Then, anti-interference aluminum-plastic composite tape, an extruded inner sheath, and an extruded outer sheath are sequentially wrapped around the conductor group to obtain the wire core.

8. The method for preparing a scratch-resistant, high-temperature-resistant, and chemically-resistant dust-free drag chain cable according to claim 6, characterized in that, In step three, the inner sheath is made of maleic anhydride-grafted polyolefin.

9. The method for preparing a scratch-resistant, high-temperature-resistant, and chemically-resistant dust-free drag chain cable according to claim 6, characterized in that, In step four, the dust-free drag chain cable semi-finished product obtained in step three is heated in a high-temperature oven at 100~250℃. The scratch-resistant outer sheath is made of polyamide 66 and glass fiber. Polyamide 66 can undergo a dehydration reaction with the anhydride groups in maleic anhydride-grafted polyolefin to form covalent bonds.

10. The method for preparing a scratch-resistant, high-temperature resistant, and chemically corrosion-resistant dust-free drag chain cable according to claim 6, characterized in that, In step five, the product obtained in step four is heated in a high-temperature oven at 300~320℃.

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