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A preparation method of anti-cracking low-smoke halogen-free optical cable flame-retardant sheath material

A flame-retardant sheath and anti-cracking technology, which is applied in the field of optical cable sheathing, can solve the problems of poor cracking resistance and achieve the effects of improving interface bonding force, improving high-temperature cracking resistance, and good cracking resistance

Active Publication Date: 2016-02-17
江苏科信光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most commercial products of low-smoke halogen-free flame-retardant sheathing materials have poor crack resistance

Method used

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  • A preparation method of anti-cracking low-smoke halogen-free optical cable flame-retardant sheath material
  • A preparation method of anti-cracking low-smoke halogen-free optical cable flame-retardant sheath material
  • A preparation method of anti-cracking low-smoke halogen-free optical cable flame-retardant sheath material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Dry the flame retardant (35kg aluminum hydroxide H-WF-1, 3kg zinc borate ZB-2335 and 1.2kg organic montmorillonite DK-4) until the moisture content is lower than 5%, and the dried flame retardant Mix it with a coupling agent (1kg monoalkoxy titanate TC-2), and stir at a temperature of 80°C at a stirring speed of 200rpm for 8 minutes to obtain a mixture a; Fuel filler (6kg active calcium carbonate), lubricant (1.2kgPE wax and 0.3kg stearic acid) and antioxidant (0.5kg antioxidant 1010 and 0.5kg antioxidant 168), after adding, the temperature is 80℃ Under the condition of 220rpm stirring for 10min, mixture b was obtained; base material (30kgHDPE5000S, 10kgEVA7470M and 5kgPOE polyolefin elastic 8201), anti-ultraviolet agent (3.3kg polyethylene carbon black masterbatch ), compatibilizer (2kg compatibilizer MC-218) and additives (1kg silicone masterbatch PW1050), after adding, stir at a speed of 250rpm for 2min to obtain mixture c, first send mixture c into twin-screw The e...

Embodiment 2

[0043]Dry the flame retardant (35kg aluminum hydroxide H-WF-1, 3kg zinc borate ZB-2335 and 1.2kg organic montmorillonite DK-4) until the moisture content is lower than 5%, and the dried flame retardant Mix it with a coupling agent (0.5kg monoalkoxy titanate TC-2), and stir for 9 minutes at a stirring speed of 250rpm at a temperature of 85°C to obtain a mixture a; Flame retardant filler (4kg active calcium carbonate), lubricant (1.2kgPE wax and 0.3kg stearic acid) and antioxidant (0.5kg antioxidant 1010 and 0.5kg antioxidant 168), after adding, the temperature is 85 Under the condition of ℃, stir at a stirring speed of 250rpm for 11min to obtain mixture b; add base material (30kgHDPE5000S, 10kgEVA7470M and 5kgPOE polyolefin elastic 8201), anti-ultraviolet agent (1kg polyethylene carbon black masterbatch ), compatibilizer (1kg compatibilizer MC-218) and additives (0.5kg silicone masterbatch PW1050), after adding, stir at a stirring speed of 270rpm for 3min to obtain mixture c, f...

Embodiment 3

[0045] Dry the flame retardant (35kg aluminum hydroxide H-WF-1, 3kg zinc borate ZB-2335 and 1.2kg organic montmorillonite DK-4) until the moisture content is lower than 5%, and the dried flame retardant Mix it with a coupling agent (1.5g monoalkoxy titanate TC-2), and stir at a stirring speed of 300rpm for 10min at a temperature of 90°C to obtain a mixture a; Flame retardant filler (8kg active calcium carbonate), lubricant (1.2kgPE wax and 0.3kg stearic acid) and antioxidant (0.5kg antioxidant 1010 and 0.5kg antioxidant 168), after adding, the temperature is 90 Under the condition of ℃, stir at a stirring speed of 280rpm for 12min to obtain mixture b; add base material (30kgHDPE5000S, 10kgEVA7470M and 5kgPOE polyolefin elastic 8201), anti-ultraviolet agent (5kg polyethylene carbon black masterbatch ), compatibilizer (3kg compatibilizer MC-218) and additives (1.5kg silicone masterbatch PW1050), after adding, stir at a stirring speed of 320rpm for 3min to obtain mixture c, first...

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Abstract

The invention discloses a method for preparing anti-crack low-smoke and halogen-free optical cable flame-retardant sheath material, and particularly relates to the field of optical fiber sheaths. The method for preparing the flame-retardant sheath material comprises the following steps: mixing a baked fire retardant with a coupling agent; evenly agitating after mixing; adding fire retardant filler, a lubricating agent and antioxidant after evenly agitating; evenly agitating again; finally, adding a base stock, carbon black, a compatilizer and assistants; and evenly agitating after adding, so as to obtain the sheath. The sheath prepared by adopting the technical scheme disclosed by the invention has good cracking resistance, and the highest rated working temperature can be up to 150 DEG C.

Description

technical field [0001] The invention relates to the field of optical cable sheaths, in particular to a preparation method of a crack-resistant low-smoke halogen-free optical cable flame-retardant sheathing material. Background technique [0002] The optical cables used in certain environments are required to have flame retardant properties. For example, optical cables used in subways, tunnels, oil, coal mines, buildings, computer rooms, public buildings, etc. At this time, flame-retardant materials should be used to make cable sheaths, especially with the rapid development of fiber-to-the-home (FTTH), indoor optical cables, especially leather cables (access network butterfly cables), must use flame-retardant sheath materials . Flame-retardant sheath materials are usually divided into two categories, one is flame-retardant polyvinyl chloride (PVC) sheath materials, and the other is flame-retardant polyolefin (such as EVA, PE) sheath materials. [0003] Chlorine atoms (halo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/06C08K9/04C08K3/22C08K3/38C08K3/34C08K3/26C08K5/134C08K5/526B29B9/06
CPCB29B9/06C08L23/06C08L2201/02C08L2201/08C08L2201/22C08L2205/025C08L2205/035C08L2207/062C08L23/0853C08L23/0815C08K13/06C08K9/04C08K2003/2227C08K3/38C08K3/346C08K2003/265C08K3/04
Inventor 张钊连张才彦陈炳炎
Owner 江苏科信光电科技有限公司
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