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Thermoplastic moldable TPU (Thermoplastic Polyurethane) filament as well as preparation method and application thereof

A thermoplastic and polyvinylidene fluoride technology, which is applied in the manufacture of rayon, conjugated synthetic polymer rayon, textiles and papermaking, etc., can solve the complex process of base fabric and TPU lamination, troublesome production operations, and poor folding resistance and other problems, to achieve the effect of good setting effect, low boiling water shrinkage rate and high recovery rate

Inactive Publication Date: 2019-04-12
JINJIANG DAYI WARP KNITTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thickness of the TPU dual-temperature film composite fabric prepared by the above-mentioned technology is uniform, but its cold resistance, folding resistance and elasticity are weak. In addition, the above-mentioned preparation method also involves the process of compounding the base cloth and the TPU film. As we all know, The base fabric and TPU film need to be laminated before it can be applied to textile production, and the lamination process of the base fabric and TPU is relatively complicated, and the production operation is troublesome

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The invention provides a kind of thermoplastic shapeable TPU wire, comprising the following raw materials in parts by weight:

[0027] TPU 20g, polyvinylidene fluoride 20g with a weight average molecular weight of 450,000-540,000, polyvinyl butyral 5g, N-(2-ethoxyphenyl)-N'-(4-ethylphenyl)- Oxalamide 0.3g, oleamide 0.1g, erucyl 0.1g, tris[2,4-di-tert-butylphenyl]phosphite 0.5g;

[0028] The present invention further provides the preparation method of above-mentioned TPU silk, comprises the steps:

[0029] (1) Fully mix the above-mentioned raw materials in a high-speed mixer according to the proportioning ratio to form a mixture;

[0030] (2) Put the mixture in a screw machine at 200°C, the rotating speed of the screw machine is 800 rpm, the mixture is fully fused under the shearing, kneading and conveying of the screw, and is extruded through the die to form a filament, and then Vacuum cooling at 5°C for 1h;

[0031] (3) Send to the warp and pan head of the warp knit...

Embodiment 2

[0033] The invention provides a kind of thermoplastic shapeable TPU wire, comprising the following raw materials in parts by weight:

[0034] TPU 30g, polyvinylidene fluoride 10g with a weight average molecular weight of 450,000-540,000, polyvinyl butyral 10g, N-(2-ethoxyphenyl)-N'-(4-ethylphenyl)- 0.2g oxalamide, 0.16g oleamide, 0.24g erucamide, 0.2g triphenyl phosphite;

[0035] The present invention further provides the preparation method of above-mentioned TPU silk, comprises the steps:

[0036] (1) Fully mix the above-mentioned raw materials in a high-speed mixer according to the proportioning ratio to form a mixture;

[0037] (2) Put the mixture in a screw machine at 170°C, the rotating speed of the screw machine is 400 rpm, the mixture is fully fused under the shearing, kneading and conveying of the screw, and is extruded through the die to form a filament. Vacuum cooling at 0°C for 2 hours;

[0038] (3) send to the warp of warp knitting machine, pan head, make descr...

Embodiment 3

[0040] The invention provides a kind of thermoplastic shapeable TPU wire, comprising the following raw materials in parts by weight:

[0041] TPU 25g, polyvinylidene fluoride 15g with a weight average molecular weight of 550,000-650,000, polyvinyl butyral 8g, N-(2-ethoxyphenyl)-N'-(4-ethylphenyl)-ethyl Diamide 0.25g, oleamide 0.15g, erucyl 0.15g, tris[2,4-di-tert-butylphenyl]phosphite 0.3g;

[0042] The present invention further provides the preparation method of above-mentioned TPU silk, comprises the steps:

[0043] (1) Fully mix the above-mentioned raw materials in a high-speed mixer according to the proportioning ratio to form a mixture;

[0044] (2) put the mixture in a screw machine at 180°C, the rotating speed of the screw machine is 600 rpm, the mixture is fully fused under the shearing, kneading and conveying of the screw, and is extruded through the die to form a filament, and then Vacuum cooling at 3°C ​​for 1.5h;

[0045] (3) send to the warp of warp knitting ma...

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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PUM

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Abstract

The invention provides a thermoplastic moldable TPU (Thermoplastic Polyurethane) filament which is composed of raw materials of TPU, polyvinylidene fluoride, polyvinyl butyral, an ultraviolet absorbent, a lubricant and an antioxidant, wherein the weight-average molecular weight of the polyvinylidene fluoride is 450000-540000, or is 550000-650000. The TPU filament is made of the polyvinylidene fluoride of the specific weight-average molecular weight, the TPU and other raw materials, the TPU filament made of the raw materials has the characteristics of being good in cold resistance and fractureresistance, high in rebound rate, that is, the rebound rate after extreme extension is as high as 98%, low in low boiling water shrinkage rate, approximate to zero shrinkage in boiling water, light and transparent, good in molding effect, and not liable to deform after molding; for the thermoplastic moldable TPU filament made by using an environmental-friendly melting and spinning process, a conventional TPU membrane pressing process is avoided, processes can be simplified, and the production cost can be lowered.

Description

technical field [0001] The invention belongs to the technical field of TPU yarn and its preparation, and in particular relates to a thermoplastic shapeable TPU yarn and its preparation method and application. Background technique [0002] Thermoplastic elastomers are more and more widely used due to their excellent elongation at break, resilience, wear resistance, weather resistance and superior processing and molding methods compared to cast polyurethane. In particular, due to the rapid development of the polyurethane industry, the production capacity of raw material manufacturers has been continuously expanded, and the cost has been continuously reduced, thereby promoting the application and development of new rounds of polyurethane products. TPU film is thermoplastic polyurethane, which is divided into polyester type and polyether type. It is widely used in daily necessities, sporting goods, toys, decorative materials and other fields. Halogen-free flame-retardant TPU fil...

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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Application Information

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IPC IPC(8): D01F8/16D01F8/10D01F1/10
CPCD01F1/10D01F1/106D01F8/10D01F8/16
Inventor 蔡金成
Owner JINJIANG DAYI WARP KNITTING
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