Method for producing phosphorus copolymerized flame-retarding terylene high-strength industrial yarns

A technology of flame retardant and production method of copolymerization, which is applied in the field of polyester spinning, can solve the problems that the esterification temperature cannot be too high, the decomposition of flame retardant affects the flame retardant effect, and the difficulty of increasing the melt viscosity, etc., so as to reduce dyeing Effects of cost, intrinsic viscosity reduction, and high hydrolytic stability
CN102199807AActive Publication Date: 2011-09-28ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO LTD
Publication Date
2011-09-28

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Abstract

The invention discloses a method for producing phosphorus copolymerized flame-retarding terylene high-strength industrial yarns, which is characterized by comprising the following steps: pumping ethylene glycol (EG) and purified terephthalic acid (PTA) into a pulping kettle according to a molar ratio of 1.15 for pulping; after uniform pulping, transferring the uniform pulp into an esterification kettle for esterification; after the esterification is accomplished, adding blended liquid of a flame retardant, uniformly mixing, and adding the mixture into a polymerization kettle; after the polymerization is accomplished, discharging and cutting to obtain flame-retarding polyester chips with a viscosity of 0.61; feeding the prepared flame-retarding polyester chips into a solid-phase polymerization system, and improving the viscosity to 0.90 to 1.10; and melting at a high temperature into molten spinning solution in a screw extruder, spinning by a spinning component, drawing, and thermally setting to obtain phosphorus copolymerized flame-retarding terylene high-strength industrial yarns. In the invention, a copolymerized flame-retarding modification process is used for flame-retarding modification of the polyester, and the obtained terylene industrial yarns have high strength and a permanent flame-retarding property.
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Description

Technical field:

[0001] The invention designs a production method of flame-retardant polyester industrial yarn, in particular a production method of phosphorus-based copolymerized flame-retardant polyester high-strength industrial yarn, and belongs to the technical field of polyester spinning. technical background:

[0002] According to the production process and the introduction of flame retardants, the flame retardant modification methods of polyester can be summarized into the following five types: (1): adding reactive flame retardants in the transesterification or polycondensation stage for co-condensation; (2): in Adding an additive flame retardant to the melt before melt spinning; (3): Composite spinning with ordinary polyester and polyester containing flame retardant components; (4): Reactive flame retardant on polyester or fabric Carry out graft copolymerization; (5): polyester fabric carries out flame-retardant post-treatment. Methods (1) to (3) belong to flame-ret...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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