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Method for directly preparing fiber product fron poly lactic acid polymerized smelting body

A technology of polylactic acid and melt, which is applied in the field of polymer materials, can solve the problems that restrict the industrialization process of fiber products, and achieve the effects of ensuring spinnability, less equipment investment, and saving energy consumption

Inactive Publication Date: 2007-01-24
恒天长江生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is the shackles of this traditional thinking that restricts the industrialization process of preparing fiber products from polylactic acid polymer melts.

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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  • Method for directly preparing fiber product fron poly lactic acid polymerized smelting body
  • Method for directly preparing fiber product fron poly lactic acid polymerized smelting body
  • Method for directly preparing fiber product fron poly lactic acid polymerized smelting body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Please combine figure 2 , between the discharge port of the discharge pump 2 of the polylactic acid polymerization reaction device 1 and the feed port of the spinning box 8, a melt pipeline 4 that is placed in the jacket 5 and has a length of 180 meters in a straight line is connected. , the jacket 5 is connected with a medium introduction interface 3 for introducing the heat transfer medium, that is, the heat transfer oil, into the jacket cavity 12, and a medium outlet interface 11 for introducing the heat transfer medium, that is, the heat transfer oil, out of the jacket cavity 12. The interfaces 3 and 11 are respectively connected to the medium inlet and outlet pipes 6 and 10 , and the medium inlet and outlet pipes 6 and 10 are connected to the heat transfer oil furnace 7 . When the polylactic acid polymer melt obtained after the polymerization reaction of the polymerization reaction device 1 is completed by the discharge pump 2, and the temperature is in the range ...

Embodiment 2

[0026] Please combine image 3 , the polylactic acid polymerized melt with a temperature of 175°C-185°C obtained after the polymerization reaction of the polymerization reaction device 1 is completed from the discharge pump 2 is directly sent to the spinning box 8 through the melt pipeline 4 with a linear distance of 20 meters, The temperature of the heat-conducting oil in the jacket 5 is the same as that of the polylactic acid polymer melt. After the fiber products spun from the spinning box 8, that is, the polylactic acid fiber products are oiled in the subsequent process, they are continuously drawn by the feeding roller to the drafting process. After the hot roller is drawn 3-6 times, it is continuously taken up on the bobbin of the coiling system to become FDY filament or BCF filament after air deformation treatment, which can be directly used in textile fabrics and fiber products of carpets. In this embodiment, since the linear distance from the discharge port of the dis...

Embodiment 3

[0028] The polylactic acid polymer melt obtained by the polymerization reaction of the polymerization reaction device 1 with a temperature of 185°C is directly sent to the spinning box 8 through the melt pipeline 4 with a linear distance of 100 meters by the discharge pump 2, and the heat conduction in the jacket 5 The temperature of the oil is 185°C. The obtained fiber product 9, that is, the polylactic acid fiber product, is bundled under the action of the godet roller of the subsequent process, and then drawn by multiple rollers, crimped, heat-set, cut, and unhaired. , Become short fiber. After the short fiber is spun, it is used for textile fabrics, and can also be directly used for the production of textile product fillers or short fiber non-woven fabrics, and the rest are the same as those described in Example 1.

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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Abstract

A poly - lactic acid polymerization fusant directly preparing fiber method belongs to high molecular material applied technology field. It contains installing fusant pipe located in jacket between polyreaction device discharging pump material outlet and spinning box feed inlet, discharging pump directly feeding obtained poly - lactic acid polymerization fusant into spinning box through fusant pipe, leading-in heat-insulated heat conducting medium to jacket internal circulation, spinning box to make spinning to led poly - lactic acid polymerization fusant to obtain fiber products. Said invention has advantages of ensuring fiber quality and simple technological process.

Description

technical field [0001] The invention relates to a method for directly preparing fiber products from a polylactic acid polymer melt, and belongs to the technical field of polymer material applications. Background technique [0002] Polylactic acid is a new biodegradable polymer material that uses renewable starch or glucose as the initial raw material and is finally polymerized through multiple preparation processes. It was officially industrialized in the United States in 2002. The trade name is PLA. my country is in the research and development stage and has not yet entered Industrial production. [0003] At present, individual manufacturers in our country are trying to prepare fiber products from the polylactic acid polymerization melt obtained by the polymerization reaction of the polymerization reaction device. The method is as follows: first, put lactide and additives into the polylactic acid polymerization reaction device for polymerization reaction The obtained polyla...

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): D01F6/62D01D5/08
Inventor 李振华
Owner 恒天长江生物材料有限公司
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