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SFC polymer ceramic fiber monofilament material and preparation method thereof

A ceramic fiber and monofilament technology is applied in the field of SFC poly-ceramic fiber monofilament material and its preparation, which can solve the problems of unusability and poor alkali resistance, and achieve high elastic modulus, low elongation, and good aging resistance. Effect

Pending Publication Date: 2022-03-25
杜强华微(北京)高新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anti-aging performance of the modified polyester fiber is greatly improved in acidic or high-humidity high-temperature environment, but its alkali resistance is poor, so it cannot be used in cement concrete projects

Method used

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  • SFC polymer ceramic fiber monofilament material and preparation method thereof
  • SFC polymer ceramic fiber monofilament material and preparation method thereof
  • SFC polymer ceramic fiber monofilament material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 , step 1, preparing the original monofilament of mixed SFC material

[0032] a. Put polyethylene terephthalate slices in a stirring dryer, stir while heating, and dry them to obtain dry polyester and ceramic materials, wherein the drying temperature is 120°C, and the dried polyethylene terephthalate The moisture content of ethylene phthalate and ceramic powder is 1%;

[0033] b. Add the anti-alkali modification additive to the dried polyester chips and ceramic powder, stir and mix well, then send it into the screw melt extruder, heat and melt to obtain a polyester mixture, in which polyterephthalene The weight ratio of ethylene glycol formate and ceramic powder is 89:10:1, the speed of the screw extruder is 28rpm, the absolute pressure inside the screw extruder is 8.5MPa, and the shell of the screw extruder is heated by electricity, The diameter of the screw is 120mm, the aspect ratio of the screw is 30:1, the temperature of the 1-6 zone of the screw ...

Embodiment 2

[0047] Such as figure 1 , step 1, preparing the original precursor wire of polyester ceramic SFC material

[0048] a. Put polyethylene terephthalate slices in a stirring dryer, heat, stir, and dry to obtain a dried polyester ceramic material, wherein the drying temperature is 120°C, and the dried polyethylene terephthalate The moisture content of the ester is 0.5%;

[0049] b. Add the anti-alkali modified additive ceramic powder into the dry polyethylene terephthalate slices, stir and mix evenly, then send it into the screw melt extruder, heat and melt, mix evenly, and make Obtain polyester mixture, wherein, the weight ratio of polyethylene terephthalate is 80:5:5, the rotating speed of screw extruder is 20rpm, and the absolute pressure in the screw extruder is 9.0MPa, and the screw extruder The temperature of each zone is: 228°C, 256°C, 276°C, 280°C, 272°C, 274°C: the temperature of the extrusion head of the screw extruder is 274°C;

[0050] c. Extrude the molten polyester...

Embodiment 3

[0063] Such as figure 1 , step 1, preparing SFC precursor

[0064] a. Put polyethylene terephthalate slices and ceramics in a stirring dryer, heat, stir, and dry to obtain dry polyester and ceramic materials, wherein the drying temperature is 120 ° C, and the SFC moisture content after drying is 1%;

[0065] b. Add the anti-alkali modification additive and polyester ceramics into the dried polyethylene terephthalate slices, stir and mix well, then send them into the screw melt extruder, heat and melt, mix evenly, and make Obtain polyester mixture, wherein, the weight ratio of polyethylene terephthalate, polyethylene and polypropylene is 90:15:0.5, the rotating speed of screw extruder is 15rpm, and the absolute pressure in the screw extruder is 9.5 MPa, the temperature of each zone of the screw extruder is: 234°C, 250°C, 274°C, 276°C, 266°C, 270°C: the temperature of the extrusion head of the screw extruder is 270°C;

[0066] c. Extrude the molten polyester ceramic mixture t...

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Abstract

The invention relates to the technical field of SFC polymer ceramic fiber monofilament materials, in particular to an SFC polymer ceramic fiber monofilament material and a preparation method thereof.The preparation method comprises the following steps that firstly, SFC polymer ceramic fibers are prepared through the technology that ultra-high-strength modified polyester materials are polymerized with ultra-fine grain nano-ceramics, the SFC polymer ceramic fibers are synthesized into an SFC material, and the SFC material is prepared; the SFC material and the alkali-resistant performance additive are mixed and melted and then are subjected to spinning treatment, mixed SFC polymer ceramic fiber mother yarn is prepared, and the alkali-resistant performance additive comprises a ceramic powder material; 2, compounding the mixed modified polymer ceramic powder into SFC polymer ceramic monofilaments, and carrying out tension heat setting treatment to obtain an SFC material; step 3, carrying out first stretching treatment on the mixed SFC polymer ceramic fiber original monofilament to prepare a first stretched mixed SFC polymer ceramic filament; and 4, carrying out secondary stretching treatment on the heat-set SFC polymer ceramic fiber monofilament to prepare the alkali-resistant modified SFC polymer ceramic fiber monofilament.

Description

technical field [0001] The invention relates to the technical field of SFC polyceramic fiber monofilament material, in particular to an SFC polyceramic fiber monofilament material and a preparation method thereof. Background technique [0002] The preparation method of ultra-high-strength modified polyester material polymerized ultra-fine-grained nano-ceramic technology (abbreviation: SFC polyceramic fiber) and the SFC polyceramic fiber prepared by this method refer to a variety of polymeric material catalysts, reinforcing agents, stabilizers, Binder, dispersant, high-molecular-weight polymerizing agent, and ultrafine-crystalline nano-ceramic powder are used as raw materials to produce SFC polyceramic fiber. [0003] The production process of SFC poly-ceramic fiber compounded by ultra-high-strength modified polyester material polymerization ultra-fine-grained nano-ceramic technology (abbreviation: SFC poly-ceramic fiber) includes two parts: polycondensation and melt polymeri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/18D01F1/10
CPCD01F8/14D01F8/18D01F1/10
Inventor 彭书成陈美兰
Owner 杜强华微(北京)高新材料科技有限公司
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