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Filament for cord thread and preparation method thereof

A technology for cords and filaments, which is applied in the field of filaments for cords and its preparation, can solve the problems of difficult rubber dipping and poor rubber adhesion, and achieve low adhesion, strong rubber adhesion, and reduced The effect of the greenhouse effect

Active Publication Date: 2019-04-02
CATHAY R&D CENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the disadvantages in the prior art that the filament materials for cords are not easy to be dipped in rubber and have poor adhesion with rubber after dipping, the present invention provides a filament for cords and a preparation method thereof. The filaments for cords are made of leather The core structure, the polyamide material of the cortex is easy to dip into the glue, the polar amide bond and the rubber have strong adhesion, and has good wear resistance, resilience and fatigue resistance as the cortex material; the polyester material of the core layer has high strength and rigidity, and the mold High volume, as a skeleton material to provide support

Method used

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  • Filament for cord thread and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] (1) Dry the polyethylene terephthalate resin in a continuous hot air drying tower, the drying temperature is 160°C, the drying time is 20h, and then heated to a molten state to form polyethylene terephthalate Melt, as core material;

[0092] (2) Dry the polyamide 56 resin in a vacuum drum dryer, the drying temperature is 100°C, the drying time is 25 hours, and then heated to a molten state to form a polyamide 56 melt as a skin layer material;

[0093] (3), the polyamide 56 melt and the polyethylene terephthalate melt are merged in the composite spinning assembly through their respective melt pipes, and extruded through the skin-core composite spinneret to form as-spun filaments. The proportion of core components is accurately adjusted by a metering pump, the content of the skin layer is 20wt%, and the content of the core layer is 80wt%;

[0094] (4) Process the as-spun yarn to obtain the filament for cord.

[0095] The relative viscosity of polyamide 56 resin 96wt% su...

Embodiment 2

[0103] (1), drying polytrimethylene terephthalate resin in a continuous hot air drying tower, the drying temperature is 145 ° C, the drying time is 28h, and then heated to a molten state to form a polytrimethylene terephthalate melt, as core material;

[0104] (2) Dry the polyamide 510 resin in a vacuum drum dryer, the drying temperature is 95°C, the drying time is 25h, and then heated to a molten state to form a polyamide 510 melt as a skin layer material;

[0105] (3), the polyamide 510 melt and the polytrimethylene terephthalate melt are merged in the composite spinning assembly through their respective melt pipes, extruded through the skin-core composite spinneret to form as-spun filaments, and the skin-core assembly The proportion is accurately adjusted by the metering pump, the content of the skin layer is 40wt%, and the content of the core layer is 60wt%;

[0106] (4) Process the as-spun yarn to obtain the filament for cord.

[0107] The polyamide 510 resin has a relati...

Embodiment 3

[0115] (1) Dry the polyethylene terephthalate resin in a continuous hot air drying tower, the drying temperature is 130°C, the drying time is 30h, and then heated to a molten state to form polyethylene terephthalate Melt, as core material;

[0116] (2) Dry the polyamide 66 resin in a vacuum drum dryer at a drying temperature of 125°C and a drying time of 15 hours, and then heat it to a molten state to form a polyamide 66 melt as a skin layer material;

[0117] (3), the polyamide 66 melt and the polyethylene terephthalate melt are merged in the composite spinning assembly through their respective melt pipes, and are extruded through the skin-core composite spinneret to form as-spun filaments. The proportion of core components is accurately adjusted by a metering pump, the content of the skin layer is 50wt%, and the content of the core layer is 50wt%;

[0118] (4) Process the as-spun yarn to obtain the filament for cord.

[0119] The polyamide 66 resin has a relative viscosity...

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Abstract

The invention provides a filament for a cord thread and a preparation method thereof. The filament for the cord thread has a skin-core structure; a polyamide material of a skin layer is easy to be impregnated; a polar amido bond has high adhesiveness to rubber; as a skin layer material, the polyamide material has high abrasive resistance, rebound resilience and fatigue durability; a polyester material of a core layer has high strength, high rigidity and high modulus; the polyester material is used as a framework material for providing a support function.

Description

technical field [0001] The invention relates to the technical field of polyamide fibers, in particular to a filament for cords and a preparation method thereof. Background technique [0002] As the skeleton material of rubber composite materials, cord is widely used in rubber tires, conveyor belts, rubber shoes and other fields. In the field of tires, cord is used as the skeleton of automobile tires, and as a reinforcing material, it determines the quality and performance of tires. According to the tire application field, the performance requirements of the cord are not completely the same. The ideal cord should have the advantages of high strength, high modulus, fatigue resistance, aging resistance, impact resistance, good dimensional stability, and good elasticity. [0003] At present, polyethylene terephthalate and polyamide cord are widely used. There are two production methods for cord wire, one is the conventional two-step method, and the other is the one-step drawin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/12D01F8/14D01D1/04D01D5/08D01D5/088D01D5/16D01D5/34D01D10/02C08L21/00C08L77/02C08L77/06C08L67/02
CPCD01D1/04D01D5/08D01D5/088D01D5/16D01D5/34D01D10/02D01F8/12D01F8/14C08L21/00C08L77/06C08L67/02C08L77/02
Inventor 孙朝续徐晓辰秦兵兵刘修才
Owner CATHAY R&D CENT CO LTD
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