Method for producing polypropylene concrete reinforced fiber

A technology of reinforcing fibers and production methods, applied in the field of polypropylene concrete/mortar reinforcing fibers, can solve problems such as preventing the application of polypropylene fibers, and achieve the effects of improved uniformity of fineness, high tensile strength and light specific gravity

Inactive Publication Date: 2005-03-23
NINGBO DACHENG ADVANCED MATERIAL
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AI Technical Summary

Problems solved by technology

[0004] The above-mentioned technical shortcomings prevent the application of polypropylene fibers in the field of construction

Method used

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  • Method for producing polypropylene concrete reinforced fiber
  • Method for producing polypropylene concrete reinforced fiber

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Embodiment Construction

[0016] The concrete process parameter of the present invention in production is as follows:

[0017] 1. Screw extruder: 50-70 rpm, pressure 50-90 kg, screw heating area, zone 1 230°C-260°C, zone 2 250°C-290°C, zone 3 270°C-300°C, zone 4 Zone 285°C-320°C, zone five 290°C-320°C, zone six 295°C-340°C, zone seven 290°C-315°C, zone eight 280°C-300°C.

[0018] 2. Melt filter: filter mesh density 250-300 mesh, heating temperature 270°C-290°C.

[0019] 3. Melt metering pump: 50CC-70CC, supply pump turns 18-26 rpm.

[0020] 4. Spinneret φ500mm×5000 holes, hole diameter 0.6-0.8mm, aspect ratio 1:8-12.

[0021] 5. The temperature of the frozen emulsion water is controlled at 5°C-10°C, and the elapsed time is 5-30 meters per minute.

[0022] 6. Hot roll drafting: hot roll temperature 80°C-100°C, activator oil bath temperature 90°C-100°C, activator oil bath concentration 6%-10%, drafting multiple 5-8 times.

[0023] 7. Crimp: The basic requirement is no crimp, and the back pressure of ...

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Abstract

The invention refers to a method of producing PP-concrete reinforcing fiber. The diameter of spinning aperture is 0.6-0.8 mm and the ratio of long diameters is 1:8-1:12, which can evenly spin high-intensity low-modular magnitude fiber. The equipment of filature adopts emulsion water for cooling; the fiber is cut into length specification of 8mm, 12mm and 19mm. The activating agent of fiber surface adopts organic silicon, oxosilane, alkyl-phosphate, aging-resisting agent and dispersant to carry through secondary activating treatment; fiber size, namely single thread is 20g / denier-30g / denier.

Description

technical field [0001] The invention relates to a polypropylene concrete / mortar reinforcing fiber, in particular to a concrete reinforcing fiber and a production process thereof which are applied to building concrete / mortar for anti-seismic, anti-cracking, anti-seepage and reinforcement, and achieve excellent results. Background technique [0002] At present, the annual production capacity of polypropylene fiber in China is hundreds of thousands of tons, accounting for a relatively large proportion of the total amount of chemical fibers in the country. The products are mainly polypropylene filaments, polypropylene staple fibers, and polypropylene tows, which are respectively used in the textile industry. And non-woven non-woven fabrics, geotextiles, carpets, cigarette filters and other fields. The manufacture of these products generally adopts conventional melt spinning and stretching, such as: (1) the production of polypropylene filaments is first melt-spun by screw extrusi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B16/06
CPCC04B16/0633
Inventor 陈成泗马永梅
Owner NINGBO DACHENG ADVANCED MATERIAL
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