Modified ultra-high molecular weight polyethylene fiber forming special material, and preparation method and melt spinning fiber forming method thereof
An ultra-high molecular weight, melt-spinning technology, applied in the field of high-strength fiber materials, can solve problems such as extrusion distortion, adhesion-slip flow, etc., achieve good mechanical properties, uniform and dense fiber internal structure, and meet fineness and strength requirements Effect
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[0034] Example 1
[0035] Modified ultra-high molecular weight polyethylene fiber-forming special material, raw material composition: select ultra-high molecular weight polyethylene with a viscosity average molecular weight of 1.5 million, high density polyethylene (melt flow rate 5~7g / 10 min), antioxidant, modified Nano-silica (particle size 30nm), weight ratios are respectively 60%, 37.2%, 1%, 1.8%, mixed by high-mixer and twin-screw extruder for mixing and granulating to prepare melt spinning Pellets.
[0036] The specific modification treatment method of the modified nano-silica is as follows: drying the nano-silica at an oven temperature of 80° C. for 20 minutes; dispersing the dried nano-silica in absolute ethanol and adding it The titanate coupling agent with a mass fraction of 1.5%, ultrasonically dispersed in a water bath at 80°C for 40 minutes, and the ethanol is completely volatilized at an oven temperature of 85°C to obtain modified nano-silica, which has a good disper...
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[0038] Example 2
[0039] Modified ultra-high molecular weight polyethylene fiber-forming special material, raw material composition: select ultra-high molecular weight polyethylene with a viscosity average molecular weight of 1.5 million, high density polyethylene (melt flow rate 5~7g / 10 min), antioxidant, modified Nano silica (particle size 30nm), modified nano titanium dioxide (particle size 100nm), the weight ratio is 70%, 26.5%, 1%, 1.5%, 1% respectively, blended by high mixer and twin screw extrusion Mix and granulate out of the machine to prepare melt-spun pellets.
[0040] The specific modification treatment method of the modified nano-silica or modified nano-titanium dioxide is as follows: drying the nano-silica or the modified nano-titanium dioxide at an oven temperature of 80°C for 20 minutes; drying the treated nano-silica Or the modified nano-titanium dioxide is completely dispersed in absolute ethanol, added with 1.5% silane coupling agent, ultrasonically dispersed i...
Example Embodiment
[0042] Example 3
[0043] Modified ultra-high molecular weight polyethylene fiber-forming special material, raw material composition: select ultra-high molecular weight polyethylene with a viscosity average molecular weight of 1.5 million, high density polyethylene (melt flow rate 5~7g / 10 min), antioxidant, modified Nano silica (particle size 30nm), modified nano titanium dioxide (particle size 100nm), the weight ratios are 76%, 20%, 1%, 1.8%, 1.2%, respectively, blended by high mixer and twin screw extrusion Mix and granulate out of the machine to prepare melt-spun pellets.
[0044] The specific modification treatment method of the modified nano-silica or modified nano-titanium dioxide is as follows: drying the nano-silica or the modified nano-titanium dioxide at an oven temperature of 80°C for 20 minutes; drying the treated nano-silica Or the modified nano-titanium dioxide is completely dispersed in absolute ethanol, added with 1.5% silane coupling agent, ultrasonically disperse...
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