Method for producing polyester industrial yarn by one-step method
A polyester industrial yarn and footwork technology, which is applied in the field of polyester industrial yarn, can solve the problems of high strength, high modulus and low shrinkage rate, the product cannot reach high modulus, and low shrinkage can not be taken into account, and achieve high modulus, low shrinkage, etc. Improve the uniformity of viscosity and improve the effect of dry crystallization
Inactive Publication Date: 2010-03-17
SHANDONG HELON POLYTEX CHEM FIBER
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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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The invention discloses a method for producing polyester industrial yarn by a one-step method, comprising a solid-phase polymerization step, a fusing spinning step, a stretching and heat shaping stepand a winding and forming step. The method is characterized in that: in the solid-phase polymerization step, raw materials with the viscosity of 0.65+/-0.05dl/g, the content of terminal carboxyl groupof 24+/-3mol/t are cut into pieces and stuck to be materials with the viscosity of 1.035+/-0.01dl/g, the water content less than or equal to 20ppm and the content of the terminal carboxyl group lessthan or equal to 15mol/t through continuous solid-phase polymerization; in the fusing spinning step, the ratio of the length to the diameter of spinneret orifices of a spinneret plate for spinning is3:1, the deviation ratio of the aperture to the length of the spinneret orifice is +/-0.02, and the spinneret orifices are evenly arrayed in the spinneret plate; in the stretching and heat shaping step, four rollers are adopted for stretching and shaping; and in the winding and forming step, the winding speed is 6,300+/-500m/min. The polyester industrial yarn can simultaneously achieve the performances of high strength, high modulus and low shrinkage, and has breakage strength more than or equal to 8.2CN/dtex, initial modulus more than or equal to 110N/dtex, the modulus more than or equal to 5.0cn/dtex when 5 percent is stretched and dry heat shrinking percentage less than or equal to 4.1 percent.
Application Domain
Spinning head liquid feederMelt spinning methods
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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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Property | Measurement | Unit |
Breaking strength | >= 8.2 | cN/dtex |
Initial modulus | >= 110.0 | cN/dtex |
Modulus | >= 5.0 | cN/dtex |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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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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