Sheath PVC material and preparation method thereof

Abstract

The present application provides a sheath PVC material and a preparation method thereof. The sheath PVC material is used for UAV wires. The sheath PVC material includes the following components by weight: 90-120 parts of PVC powder; 7-8 parts of filler; 3-4 parts of stabilizer; 0.1-0.8 parts of lubricant; 2-6 parts of organic fiber material; 60-70 parts of polymer plasticizer; 10-20 parts of cold-resistant agent; 6-10 parts of flame retardant; 10-20 parts of wear-resistant agent. The addition of organic fiber material, filler, etc. effectively improves the temperature resistance of the sheath PVC material, and the performance remains unchanged when it is used normally under high temperature of 125°C and low temperature of minus 50°C; the addition of organic fiber material improves the mechanical properties of the sheath PVC material, which is stretch-resistant for bending, and a flame retardant is added. Therefore, the sheath PVC material of the present application can be used to make a normally bending and flame-retardant cable sheath, which is not prone to breakage and fire; it can be applied to aerospace equipment, especially UAV wires.

Description

Technical Field

[0001] The present application belongs to the technical field of PVC materials, and more specifically, to a sheath PVC material and a preparation method thereof. Background Art

[0002] PVC was once the world's largest-produced general-purpose plastic and is widely used in building materials, industrial products, daily necessities, floor coverings, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers, etc.

[0003] PVC is an amorphous white powder with a small degree of branching, a relative density of about 1.4, a glass transition temperature of 77℃-90℃, and begins to decompose at around 170℃. It has poor stability to light and heat. At temperatures above 100℃ or after prolonged exposure to sunlight, it will decompose to produce hydrogen chloride, and further autocatalytically decompose, causing discoloration and a rapid decline in physical and mechanical properties. In practical applications, stabilizers must be added to improve stability to heat and light.

[0004] PVC can be used to make cable sheaths. However, the existing PVC sheath material formula is single, PVC sheaths cannot be used at high or low temperatures, and are prone to breakage due to long-term bending, resulting in a large limitation on the scope of use of PVC wire sheaths. Summary of the invention

[0005] Based on this, the purpose of this application is to provide a sheath PVC material and a preparation method thereof to solve the technical problems in the prior art that the PVC sheath cannot be used at high or low temperatures and is prone to breakage due to long-term bending.

[0006] In order to achieve the above-mentioned invention object, the technical solution of this application is as follows:

[0007] In a first aspect, a sheath PVC material is provided for use in drone wires, wherein the sheath PVC material comprises the following components in parts by weight:

[0008]

[0009] Optionally, the filler comprises nanometer calcium carbonate and zirconium oxide in a mass ratio of 10-20:0.01-0.5.

[0010] Optionally, the organic fiber material includes ultra-high molecular weight polyethylene fibers and ultra-high molecular weight polyethylene fibers; and / or,

[0011] The organic fiber material is formed by interweaving or bundling ultra-high molecular weight polyethylene fiber warps and ultra-high molecular weight polyethylene fiber wefts.

[0012] Optionally, the organic fiber material is in a cross shape and is formed by interweaving or bundling at least one ultra-high molecular weight polyethylene fiber warp thread and at least one ultra-high molecular weight polyethylene fiber weft thread.

[0013] Optionally, the density of the ultra-high molecular weight polyethylene fiber warp is 6-10 pieces / 10mm, and the diameter is 0.5-1.0mm; the density of the ultra-high molecular weight polyethylene fiber weft is 6-10 pieces / 10mm, and the diameter is 0.5-1.0mm.

[0014] Optionally, the stabilizer comprises stabilizer A-380; and / or,

[0015] The lubricant is prepared by mixing lubricant G-78 and lubricant GH4 in a weight ratio of 1:1-1.5.

[0016] Optionally, the polymer plasticizer includes trioctyl trimellitate and / or trihexyl trimellitate; and / or,

[0017] Cold resistance agents include Cold Resistance Agent 797S.

[0018] Optionally, the flame retardant comprises flame retardant DR-65; and / or,

[0019] The anti-wear agent includes anti-wear agent NMJ-01.

[0020] In a second aspect, the present application provides a method for preparing the above-mentioned sheath PVC material, comprising the following steps:

[0021] S10: mixing PVC powder, filler, stabilizer, lubricant, cold-resistant agent, flame retardant and wear-resistant agent according to proportion to obtain a mixture;

[0022] S20: mixing the mixed material, the organic fiber material and the polymer plasticizer, and then extruding to obtain the sheath PVC material.

[0023] Optionally, in step 10, PVC powder, filler, stabilizer, lubricant, cold-resistant agent, flame retardant and wear-resistant agent are mixed in proportion, with a stirring speed of 200 r / min-400 r / min and a temperature of 90° C.-100° C.; and / or,

[0024] In step 20, the mixed material, the organic fiber material and the polymer plasticizer are mixed at a stirring speed of 20 r / min-40 r / min and a temperature of 70° C.-80° C.

[0025] The beneficial effects of this application are:

[0026] The sheath PVC material provided by the present application, firstly, the addition of organic fiber material, filler, etc. effectively improves the temperature resistance of the sheath PVC material, and the use temperature can be normally used in a high temperature of 125°C and a low temperature of minus 50°C without changing the performance. Compared with conventional PVC cable materials, the sheath PVC material has the advantages of high temperature resistance and cold resistance, and is softer; secondly, the addition of organic fiber material improves the mechanical properties of the sheath PVC material, and is stretch-resistant for bending, and a flame retardant is added, so the sheath PVC material of the present application can be used to make a normally bending and flame-retardant cable sheath, which is not prone to breakage and fire; thirdly, the organic fiber material is combined with PVC powder and the synergistic effect of fillers, wear-resistant agents, etc., increases the wear resistance of the sheath PVC material; the sheath PVC material of the present application can be applied to aerospace equipment, especially unmanned aerial vehicle wire;

[0027] The preparation method of the sheath PVC material provided in the present application is formulated according to the properties of the material, has simple operation, high production efficiency, and is conducive to industrial production. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] The embodiment of the present application provides a sheath PVC material which can be used for drone wires. The sheath PVC material includes the following components in parts by weight:

[0030]

[0031] The sheath PVC material provided in the embodiment of the present application, on the one hand, the addition of organic fiber material, filler, etc. effectively improves the temperature resistance of the sheath PVC material, and the operating temperature can be normally used in a high temperature of 125°C and a low temperature of minus 50°C without changing the performance. Compared with conventional PVC cable materials, the sheath PVC material has the advantages of high temperature resistance and cold resistance, and is softer; on the second hand, the addition of organic fiber material improves the mechanical properties of the sheath PVC material, and makes it stretch-resistant for bending, and flame retardant is added. Therefore, the sheath PVC material in the embodiment of the present application can be used to make a normally bending and flame-retardant cable sheath, which is not prone to breakage and fire; on the third hand, the combination of organic fiber material and PVC powder and the synergistic effect of fillers, wear-resistant agents, etc. increase the wear resistance of the sheath PVC material; the sheath PVC material of the present application can be applied to aerospace equipment, especially unmanned aerial vehicle wire.

[0032] In some embodiments, the filler includes nano calcium carbonate and zirconium oxide in a mass ratio of 10-20:0.01-0.5. Nano active calcium carbonate and zirconium oxide help to improve the tensile strength and elongation at break of the sheath PVC material, and at the same time, cooperate with the organic fiber material to improve the flexibility and bending strength of the sheath PVC material, so that the material can be bent for a long time without breaking in high and low temperature environments and can be used normally.

[0033] In some embodiments, the organic fiber material includes ultra-high molecular weight polyethylene fiber and ultra-high molecular weight polyethylene fiber. The ultra-high molecular weight polyethylene fiber and ultra-high molecular weight polyethylene fiber are long fibers that act as a skeleton and can significantly improve the flexibility and bendability of the sheath PVC material.

[0034] In some embodiments, the organic fiber material is formed by interweaving or bundling ultra-high molecular weight polyethylene fiber warp and ultra-high molecular weight polyethylene fiber weft, which can resist forces in multiple directions, generate support for forces in multiple directions in the sheath PVC material, and achieve a better skeleton effect.

[0035] In some embodiments, the organic fiber material is in the shape of a "cross" and is interwoven or bundled by at least one ultra-high molecular weight polyethylene fiber warp and at least one ultra-high molecular weight polyethylene fiber weft, forming a cross shape. The interaction force between the warp and the weft can reach the maximum, further improving the flexibility and bendability of the sheath PVC material.

[0036] In some embodiments, the density of the ultra-high molecular weight polyethylene fiber warp is 6-10 pieces / 10mm, and the diameter is 0.5-1.0mm; the density of the ultra-high molecular weight polyethylene fiber weft is 6-10 pieces / 10mm, and the diameter is 0.5-1.0mm.

[0037] In some embodiments, the stabilizer includes stabilizer A-380, and may also be a stabilizer having a structure and properties similar to stabilizer A-380.

[0038] In some embodiments, the lubricant is a mixture of lubricant G-78 and lubricant GH4 in a weight ratio of 1:1-1.5.

[0039] In some embodiments, the polymer plasticizer includes trioctyl trimellitate and / or trihexyl trimellitate.

[0040] In some embodiments, the cold-resistant agent includes cold-resistant agent 797S, which helps to further improve the cold resistance of the sheath PVC material.

[0041] In some embodiments, the flame retardant includes flame retardant DR-65, which improves the flame retardancy of the sheath PVC material and improves the safety of use of the sheath PVC material.

[0042] In some embodiments, the wear-resistant agent includes the wear-resistant agent NMJ-01, which helps to increase the wear resistance of the sheath PVC material.

[0043] In some embodiments, the sheath PVC material is composed of the following components in parts by weight:

[0044]

[0045] The filler is composed of nanometer calcium carbonate and zirconium oxide in a mass ratio of 10-20:0.01-0.5; the organic fiber material is formed by interweaving or bundling ultra-high molecular weight polyethylene fiber warp threads and ultra-high molecular weight polyethylene fiber weft threads.

[0046] The present application embodiment provides a method for preparing the above-mentioned sheath PVC material, comprising the following steps:

[0047] S10: PVC powder, filler, stabilizer, lubricant, cold-resistant agent, flame retardant and wear-resistant agent are mixed according to proportion to obtain a mixture.

[0048] In some embodiments, in step 10, PVC powder, filler, stabilizer, lubricant, cold-resistant agent, flame retardant and wear-resistant agent are mixed in proportion, with a stirring speed of 200 r / min-400 r / min and a temperature of 90° C.-100° C.

[0049] S20: mixing the mixed material, the organic fiber material and the polymer plasticizer, and then extruding to obtain the sheath PVC material.

[0050] In some embodiments, in step 20, the mixed material, the organic fiber material and the polymer plasticizer are mixed at a stirring speed of 20 r / min-40 r / min and a temperature of 70° C.-80° C.

[0051] The preparation method of the sheath PVC material provided in the embodiment of the present application is formulated according to the properties of the material, has simple operation, high production efficiency, and is conducive to industrial production.

[0052] The following examples are used to illustrate.

[0053] Example 1

[0054] The sheath PVC material of this embodiment is composed of the following components by weight:

[0055]

[0056] The filler is composed of nanometer calcium carbonate and zirconium oxide in a mass ratio of 10-20:0.01-0.5.

[0057] The organic fiber material is in a "cross" shape and is interwoven or bundled with an ultra-high molecular weight polyethylene fiber warp and an ultra-high molecular weight polyethylene fiber weft. The density of the ultra-high molecular weight polyethylene fiber warp is 6-10 pieces / 10mm, and the diameter is 0.5-1.0mm; the density of the ultra-high molecular weight polyethylene fiber weft is 6-10 pieces / 10mm, and the diameter is 0.5-1.0mm.

[0058] The polymer plasticizer includes trioctyl trimellitate and trihexyl trimellitate in a mass ratio of 1:1.

[0059] The preparation method of the sheath PVC material comprises the following steps:

[0060] S10: PVC powder, filler, stabilizer, lubricant, cold-resistant agent, flame retardant and wear-resistant agent are put into a mixer in proportion and stirred and mixed at a stirring speed of 200 r / min-400 r / min and a temperature of 90° C.-100° C. to obtain a mixture.

[0061] S20: mixing the mixed material, the organic fiber material and the polymer plasticizer in a mixer at a stirring speed of 20 r / min-40 r / min and a temperature of 70° C.-80° C., and then extruding the mixed material through an extruder to obtain a sheath PVC material.

[0062] Example 2

[0063] The sheath PVC material of this embodiment is composed of the following components by weight:

[0064]

[0065] The filler is composed of nanometer calcium carbonate and zirconium oxide in a mass ratio of 10:0.1.

[0066] The organic fiber material is in the shape of a cross and is interwoven or bundled with an ultra-high molecular weight polyethylene fiber warp and an ultra-high molecular weight polyethylene fiber weft. The density of the ultra-high molecular weight polyethylene fiber warp is 10 strands / 10mm, and the diameter is 0.8mm; the density of the ultra-high molecular weight polyethylene fiber weft is 6 strands / 10mm, and the diameter is 1.0mm.

[0067] The polymer plasticizer includes trioctyl trimellitate and trihexyl trimellitate in a mass ratio of 1:2.

[0068] The preparation method of the sheath PVC material in this embodiment is the same as that in embodiment 1.

[0069] Example 3

[0070] The sheath PVC material of this embodiment is composed of the following components by weight:

[0071]

[0072] The filler is composed of nanometer calcium carbonate and zirconium oxide in a mass ratio of 20:0.5.

[0073] The organic fiber material is in a "cross" shape and is interwoven or bundled with an ultra-high molecular weight polyethylene fiber warp and an ultra-high molecular weight polyethylene fiber weft. The density of the ultra-high molecular weight polyethylene fiber warp is 10 pieces / 10mm, and the diameter is 1.0mm; the density of the ultra-high molecular weight polyethylene fiber weft is 10 pieces / 10mm, and the diameter is 1.0mm.

[0074] The polymer plasticizer comprises trioctyl trimellitate and trihexyl trimellitate in a mass ratio of 1:1.2.

[0075] The preparation method of the sheath PVC material in this embodiment is the same as that in embodiment 1.

[0076] Example 4

[0077] The sheath PVC material of this embodiment is composed of the following components by weight:

[0078]

[0079]

[0080] The filler is composed of nanometer calcium carbonate and zirconium oxide in a mass ratio of 18:0.01.

[0081] The organic fiber material is in the shape of a cross and is interwoven or bundled with an ultra-high molecular weight polyethylene fiber warp and an ultra-high molecular weight polyethylene fiber weft. The density of the ultra-high molecular weight polyethylene fiber warp is 6 strands / 10mm, and the diameter is 0.5mm; the density of the ultra-high molecular weight polyethylene fiber weft is 6 strands / 10mm, and the diameter is 1.0mm.

[0082] The polymer plasticizer includes trioctyl trimellitate and trihexyl trimellitate in a mass ratio of 1:1.

[0083] The preparation method of the sheath PVC material in this embodiment is the same as that in embodiment 1.

[0084] Example 5

[0085] The sheath PVC material of this embodiment is composed of the following components by weight:

[0086]

[0087] The filler is composed of nanometer calcium carbonate and zirconium oxide in a mass ratio of 15:0.05.

[0088] The organic fiber material is in a "cross" shape and is interwoven or bundled with an ultra-high molecular weight polyethylene fiber warp and an ultra-high molecular weight polyethylene fiber weft. The density of the ultra-high molecular weight polyethylene fiber warp is 8 pieces / 10mm, and the diameter is 1.0mm; the density of the ultra-high molecular weight polyethylene fiber weft is 6 pieces / 10mm, and the diameter is 1.0mm.

[0089] The polymer plasticizer includes trioctyl trimellitate and trihexyl trimellitate in a mass ratio of 1:1.

[0090] The preparation method of the sheath PVC material in this embodiment is the same as that in embodiment 1.

[0091] Comparative Example 1

[0092] The difference between this comparative example and Example 1 is that it does not contain organic fiber material.

[0093] Comparative Example 2

[0094] The difference between this comparative example and Example 1 is that it does not contain filler.

[0095] The performance of Examples 1-5, Comparative Examples 1-2, and commercially available conventional PVC cable materials were tested, and the test results are shown in Table 1.

[0096] Table 1

[0097]

[0098] It can be seen from the test results that, compared with Comparative Example 1, the addition of organic fiber material in Example 1 can effectively improve the mechanical properties of the sheath PVC material, and improve the tensile strength, elongation at break and thermal deformation. The combination of organic fiber material and filler can synergistically improve the high temperature resistance, low temperature resistance and mechanical properties of the sheath PVC material, and has better flexibility.

[0099] Compared with conventional PVC cable materials, the matte sheath PVC material of the embodiment of the present application has the advantages of high temperature resistance and cold resistance, and is more flexible. It can achieve a stability time of more than 120 minutes at a high temperature of 200°C and can be used normally at a low temperature of minus 50°C.

[0100] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A PVC sheath material for UAV wire, characterized by: The sheath PVC material is used for normal use in high temperature 125°C and low temperature minus 50°C environment, and is used to make flexible and flame-retardant cable sheaths. The sheath PVC material comprises the following components in parts by weight: PVC powder: 100kg; Filler: 7.5kg; Stabilizer A-380: 3.8kg; Lubricant G-78: 0.2kg; Lubricant GH4: 0.2kg; Organic fiber material: 3kg; Polymer plasticizer: 68kg; Cold resistant agent 797S: 12kg; Flame retardant DR-65: 8kg; Wear-resistant agent NMJ-01: 18kg; in, The filler is composed of nano calcium carbonate and zirconium oxide in a mass ratio of 10-20:0.01-0.5; The organic fiber material is in a "cross" shape and is formed by interweaving or bundling at least one ultra-high molecular weight polyethylene fiber warp and at least one ultra-high molecular weight polyethylene fiber weft, forming a cross shape, and the interaction force between the warp and the weft reaches the maximum, further improving the flexibility and bendability of the sheath PVC material; The density of the ultra-high molecular weight polyethylene fiber warp is 6-10 strands / 10mm, and the diameter is 0.5-1.0mm; The density of the ultra-high molecular weight polyethylene fiber weft is 6-10 strands / 10mm, and the diameter is 0.5-1.0mm; The polymer plasticizer comprises trioctyl trimellitate and trihexyl trimellitate in a mass ratio of 1:1; in, The properties of the sheath PVC material are as follows: Tensile strength: 22MPa, Elongation at break: 355%, Thermal deformation: 20%, -50℃ impact embrittlement performance: passed, Thermal stability time at 200°C>120min, Hardness:72A.

2. A method for preparing the sheath PVC material as claimed in claim 1, characterized in that: The following steps are involved: S10: Put PVC powder, filler, stabilizer, lubricant, cold-resistant agent, flame retardant and wear-resistant agent into a mixer in proportion and stir and mix them at a stirring speed of 200 r / min-400 r / min and a temperature of 90° C.-100° C. to obtain a mixture; S20: mixing the mixed material, the organic fiber material and the polymer plasticizer in a mixer at a stirring speed of 20 r / min-40 r / min and a temperature of 70° C.-80° C., and then extruding the mixed material through an extruder to obtain the sheath PVC material.

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