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POSS-modified polypropylene melt-blown nonwoven fabric and preparation method thereof

A polypropylene melt-blown and non-woven fabric technology is applied in the field of non-woven fabrics to achieve the effects of soft hand feeling, low implementation cost and excellent mechanical properties

Inactive Publication Date: 2010-06-09
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the present invention, POSS nanoparticles are added to polypropylene to prepare polypropylene / POSS functional masterbatch, and then the melt-blown method is used to prepare POSS-modified polypropylene melt-blown ultrafine fiber nonwoven fabric with excellent mechanical properties. Corona discharge electret treatment has developed a new type of high-efficiency and durable electret filter material, and there are no relevant reports at home and abroad on this aspect of research

Method used

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  • POSS-modified polypropylene melt-blown nonwoven fabric and preparation method thereof

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preparation example Construction

[0030] The preparation method of the POSS modified polypropylene melt-blown nonwoven fabric electret of the present invention's design, comprises the steps:

[0031] (1) For the preparation of polypropylene functional masterbatch, first pour POSS and polypropylene slices into a high-speed mixer and mix for 30 minutes, and then add the mixed raw materials into the twin-screw compounding extruder, at a temperature of 130°C Melt extrusion, cooling in a water bath, cutting into pellets to obtain POSS modified polypropylene functional chips.

[0032] (2) To manufacture melt-blown nonwovens, feed the polypropylene functional masterbatch directly into the screw extruder, melt and extrude it at 250-280°C, and then filter it through a melt filter and measure it with a metering pump. It is sprayed out from the spinneret hole of the melt-blown die head, and under the action of hot air blowing at 250-280 °C on both sides of the spinneret hole of the melt-blown die head, it can be made int...

Embodiment 1

[0041] The polypropylene slices are directly fed into the screw extruder, melted and extruded at 280 ° C, and then filtered through the melt filter and metered by the metering pump, and then input into the spinneret hole of the melt-blown die and ejected in the melt Under the action of hot air blowing at 280°C on both sides of the spinneret hole of the injection die head, the melt-blown nano-microfiber can be made. By adjusting the speed of the screw and the metering pump, the weight of the fiber web can reach 50g / m 2 , and strengthened into a pure polypropylene melt-blown nonwoven fabric by its own waste heat on the receiving device.

[0042] The longitudinal and transverse breaking strengths measured by YG065 electronic fabric strength tester are 30N / 5cm and 24N / 5cm respectively.

Embodiment 2

[0044] (1) Preparation of polypropylene functional masterbatch, first pour 3wt% octavinyl POSS and polypropylene chips into a high-speed mixer and mix for about 30 minutes, then add the mixed raw materials into a twin-screw compounding extruder at 130 Melt and extrude at a temperature of about ℃, cool in a water bath, cut into pellets, and obtain polypropylene functional masterbatches.

[0045] (2) To manufacture melt-blown nonwovens, feed polypropylene functional masterbatch directly into the screw extruder, melt and extrude at 270°C, and then pass through the melt filter and metering pump, and then input into the melt The spinneret hole of the spray die head is sprayed out, and under the action of hot air blowing at 270°C on both sides of the spinneret hole of the melt blown die head, the melt-blown nano-microfiber can be made. By adjusting the speed of the screw and the metering pump, the fiber Mesh weight up to 50g / m 2 , and consolidated into the melt-blown nonwoven fabri...

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Abstract

The invention relates to a polyhedral silsesquioxane (POSS)-modified polypropylene melt-blown nonwoven fabric and a preparation method thereof. The nonwoven fabric is made of POSS-modified polypropylene melt-blown nano-micro fibers. According to the formula, the fibers comprise the following components in percentage by mass: PP 93-99 and POSS 1-7. The manufacturing method of the nonwoven fabric is based on the mass percentage formula of the fibers and comprises the following process steps: (1), adding POSS into polypropylene to prepare polypropylene functional mother particles; (2) preparing a POSS-containing polypropylene melt-blow nonwoven fabric; and (3) finally, processing the obtained nonwoven fabric with a high-voltage corona discharge electrets to obtain the POSS-modified polypropylene melt-blown nonwoven fabric. The nonwoven fabric is obviously improved in both mechanical property and filtering efficiency, and can be used in durable high-efficiency filter materials as well as heat insulation materials, antibacterial medical materials, oil absorbing materials and the like.

Description

Technical field [0001] The invention relates to nonwoven fabric technology, specifically a POSS modified polypropylene melt-blown nonwoven fabric and a preparation method. Background technique [0002] Melt-blown nonwovens are made by passing polymer slices through a screw extruder to melt them, then ejecting them into fibers through spinneret holes, and subjecting them to strong stretching under the blowing of high-speed hot air to form a melt-blown nonwoven fabric. Very fine fibers, these fibers adhere to each other on the mesh curtain to form a non-woven fabric. Melt-blown nonwovens have fine fibers and a relatively large surface area, making them ideal air filtration materials. At present, it is internationally agreed that melt-blown nonwoven fabrics (non-woven fabrics) are the best material for making air filter electrets. The melt-blown non-woven fabrics mainly used in China are melt-blown polypropylene fibers. [0003] The dust-capturing mechanism of melt-blown nonw...

Claims

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Application Information

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IPC IPC(8): D04H3/16D06M10/02
Inventor 程博闻宋晓艳康卫民刘亚
Owner TIANJIN POLYTECHNIC UNIV
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