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A kind of preparation method of fluorescent polytetrafluoroethylene sewing thread

A technology of polytetrafluoroethylene, sewing thread, used in the manufacture of rayon, yarn, textiles and paper

Active Publication Date: 2021-07-30
灵氟隆新材料科技江苏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of fluorescent polytetrafluoroethylene sewing thread, which solves the problem in the prior art that the bag body usually uses fluorescent powder to detect leaks after the bag is installed, and there is no suitable inspection method for whether the sewing thread is broken

Method used

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  • A kind of preparation method of fluorescent polytetrafluoroethylene sewing thread
  • A kind of preparation method of fluorescent polytetrafluoroethylene sewing thread
  • A kind of preparation method of fluorescent polytetrafluoroethylene sewing thread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Fluorescent paste preparation:

[0033] Take 10# white oil, 7.4Kg, put it into the enamel barrel, turn on the high-speed mixer, rotate at 300 rpm, add 0.3kg of 300# liquid paraffin, 0.2kg of coupling agent NXH-105, increase the speed to 1000 rpm Add 0.1kg of B01-600PTFE superfine powder, and finally add 0.2kg of KYD Lande fluorescent powder, stir for 20 minutes and let it stand for 2 hours for use.

[0034] Fluorescent PTFE sewing thread preparation:

[0035] 1. Ingredients Take 30 grams of the fluorescent paste prepared above, dilute with 300ml of solvent oil D80, take 1kg of PTFE dispersion resin DF204, mix the two, mix them by hand, put them into a large plastic bucket with a volume of 50L, and pack 30kg in total.

[0036] 2. Let stand for 100 hours.

[0037] 3. Heat preservation: Pack 3kg of the above-mentioned static resin into 5L stainless steel buckets, place them in an oven at 70°C, and heat them for 8 hours.

[0038] 4. Pre-pressing, take out the heat-preser...

Embodiment 2

[0046] The preparation of fluorescent paste is the same as in Example 1

[0047] Fluorescent PTFE sewing thread equipment:

[0048] 1. Ingredients Take 40 grams of fluorescent paste, dilute with 350ml of solvent oil D80, take PTFE dispersion resin DF-2041kg, mix the two, stir them by hand, put them into a large plastic bucket with a volume of 50L, and pack 30kg in total.

[0049] 2. Let stand for 120 hours.

[0050] 3. Heat preservation. Pack 3kg of the above-mentioned resin after standing still into 5L stainless steel buckets, place them in an oven at 70°C, and keep heat for 10 hours.

[0051] 4. Pre-pressing, take out the heat-preserved resin from the stainless steel barrel, weigh 350g and add it to the pre-pressing mold, extrude it into a rod with a diameter of 24mm on the pre-pressing machine, the pre-pressing machine pressure is 4.5MPa, push Speed ​​6m / min.

[0052] 5. Extrude, put the material rod into the extruder, the mold temperature is 80°C, the extrusion speed is...

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Abstract

The invention discloses a preparation method of fluorescent polytetrafluoroethylene sewing thread. Paraffin 3%, white oil 74%. The preparation method of fluorescent paste is as follows: add white oil into the enamel container, turn on the high-speed mixer, and add liquid paraffin and coupling agent in sequence. Increase the rotation speed to 1000 rpm, add polytetrafluoroethylene ultrafine powder and fluorescent powder in turn, after the materials are added, increase the rotation speed to 3000 rpm, stir for 20 minutes, remove the mixer, and let the slurry stand for 2 hours for use. Fluorescent PTFE sewing thread is finally formed through steps such as batching, standing, heat preservation, and pre-pressing. Beneficial effects of the present invention: the self-contained fluorescence of the product can effectively solve the problem that in the prior art, the bag body usually uses fluorescent powder to detect leaks after the bag is installed, and there is no suitable inspection method for whether the sewing thread is broken. This method is simple, easy to implement, low in cost, and easy to popularize and use.

Description

technical field [0001] The invention belongs to the sewing thread preparation technology, in particular to a preparation method of fluorescent polytetrafluoroethylene sewing thread. Background technique [0002] Polytetrafluoroethylene (PTFE) material has excellent acidity and alkalinity, corrosion resistance, water resistance and oxidation-reduction resistance, as well as excellent high and low temperature resistance and flame retardancy, and its long-term temperature resistance can reach 260 ° C. The main suture material for high temperature resistant filter bags. Since PTFE has no suitable solvent and has a very low melt index, it cannot be melt-spun using the traditional large chemical fiber production method. [0003] At present, there are two main processes for producing filter bag sewing thread monofilament for bag type dust removal. One is the slitting process of stretched film, referred to as "film cutting". One is to use the billet extrusion process, referred to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/46D02G3/02D02G3/34D01F6/48D01F1/10
CPCD01F1/10D01F6/48D02G3/02D02G3/34D02G3/46D10B2321/042D10B2401/20
Inventor 张建军陈银青陈迎妹薛士临
Owner 灵氟隆新材料科技江苏有限公司