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Preparation method of functional composite PTA

A functional and aqueous solution technology, which is applied in the field of preparation of functional composite PTA, can solve problems such as short interaction time, poor mutual fusion, and no consideration, so as to improve antibacterial function and quality effect, improve dispersion and compatibility, and promote The effect of oxide crystal growth

Inactive Publication Date: 2018-08-17
ZHEJIANG MODERN TEXTILE IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method has the following disadvantages: due to the short interaction time between the antibacterial functional modifier and the synthetic material matrix, the mutual fusion is poor, and the synergistic effect is not sufficient, so the function of the antibacterial modifier cannot be fully exerted, and it will also Affect the mechanical properties of polyester
[0006] In the existing literature, the preparation of PTA is mainly considered from the purification process, that is, to reduce the content of impurities such as p-carboxybenzaldehyde, and to reduce the impact of such impurities on the reaction of PTA in the subsequent polycondensation reaction. It is hardly considered by developing some The new PTA variety is applied to some special materials, such as the preparation of modified materials with antibacterial function, etc.
Therefore, the PTA product has always been single and almost unchanged

Method used

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  • Preparation method of functional composite PTA

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Effect test

Embodiment 1

[0072] A preparation method of a functional composite terephthalic acid with antibacterial function, comprising the steps of:

[0073] (1) In parts by mass, 11 parts by mass fraction of 8% hydrofluoric acid aqueous solution, 5 parts by mass fraction of 2% fluorosulfonic acid aqueous solution, 0.4 part of molybdenum disulfide, 0.3 part of lithium oxide, 0.5 part of Calcium pyrophosphate, 0.7 parts of magadiite powder and 1.3 parts of silicon oxide whiskers are mixed, ground with a high-energy ball mill at 45°C for 2h, and then moved to a titanium-lined hydrothermal reactor at 170°C under pressure 3MPa, reacted for 10h, atomized, separated and dried, calcined at 530°C for 4.5h, ground with a ball mill, moved to a stirred plasma reactor, and carried out radio frequency plasma at 55Pa and 60W power with nitrogen as the carrier gas Treat for 9 minutes, then add it to 11 parts of ethanol solution with a mass fraction of 30% tert-butyldimethylsilyl chloride, ultrasonically disperse a...

Embodiment 2

[0079] A preparation method of a functional composite terephthalic acid with antibacterial function, comprising the steps of:

[0080] (1) In parts by mass, 10 parts by mass fraction of 8% hydrofluoric acid aqueous solution, 4 parts by mass fraction of 2% fluorosulfonic acid aqueous solution, 0.2 part of molybdenum disulfide, 0.2 part of lithium oxide, 0.4 part of Calcium pyrophosphate, 0.5 parts of magadiite powder and 1.2 parts of silicon oxide whiskers are mixed, ground with a high-energy ball mill at 40°C for 3h, and then moved to a titanium-lined hydrothermal reactor at 160°C under pressure 4MPa, reacted for 12h, atomized and separated and dried, calcined at 520°C for 5h, ground with a ball mill, moved to a stirred plasma reactor, and carried out radio frequency plasma treatment at 60Pa and 40W power with nitrogen as the carrier gas 10min, then added to 12 parts of 30% tert-butyldimethylchlorosilane ethanol solution, ultrasonically dispersed at 75°C for 2h, filtered, full...

Embodiment 3

[0086] A preparation method of a functional composite terephthalic acid with antibacterial function, comprising the steps of:

[0087] (1) In parts by mass, 12 parts by mass fraction of 8% hydrofluoric acid aqueous solution, 6 parts by mass fraction of 2% fluorosulfonic acid aqueous solution, 0.6 part of molybdenum disulfide, 0.5 part of lithium oxide, 0.6 part of Calcium pyrophosphate, 0.8 parts of magadiite powder and 1.5 parts of silicon oxide whiskers are mixed, ground with a high-energy ball mill at 50 ° C for 1 h, and then moved to a titanium-lined hydrothermal reactor at 180 ° C under pressure 2MPa, reacted for 8h, atomized and separated and dried, calcined at 540°C for 4h, ground with a ball mill, moved to a stirred plasma reactor, and carried out radio frequency plasma treatment at 50Pa and 80W power with nitrogen as the carrier gas 8min, then added to 10 parts of 30% tert-butyldimethylchlorosilane ethanol solution, ultrasonically dispersed at 65°C for 3h, filtered, f...

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Abstract

The invention relates to a preparation method of functional composite pure terephthalic acid (PTA). The preparation method comprises the following steps: (1) mixing a hydrofluoric acid water solutionand a fluorosulfonic acid water solution with molybdenum disulfide, lithium oxide, calcium pyrophosphate, magadiite powder and silicon oxide crystal whiskers, then carrying out a hydrothermal reaction, carrying out solid-liquid separation, calcination, plasma treatment and organic silicon modification to prepare special antibacterial modified powder; (2) mixing acetic acid with deionized water, then adding a sodium hexametaphosphate water solution, the special antibacterial modified powder obtained in the step (1), aluminium-chromium phosphate and titanium dioxide, carrying out mixing, and carrying out beating and dispersing to obtain a special antibacterial agent; and (3) mixing the special antibacterial agent prepared in the step (2) with crude terephthalic acid slurry, carrying out crystallizing, carrying out solid-liquid separation, and then carrying out drying and hydrorefining to obtain the functional composite PTA. The functional composite PTA provided by the invention has an excellent antibacterial function.

Description

technical field [0001] The invention relates to the technical field of PTA materials, in particular to a preparation method of functional composite PTA. Background technique [0002] PTA (Pure terephthalic acid) is purified terephthalic acid. PTA is the lower-end product of petroleum. Petroleum produces light gasoline (alias naphtha) through a certain process, extracts MX (mixed xylene) from naphtha, and then extracts PX (paraxylene). PTA uses PX as a raw material, acetic acid as a solvent, and under the action of a catalyst, it oxidizes in liquid phase to generate crude terephthalic acid, and then undergoes hydrogenation refining, crystallization, separation, and drying to obtain purified terephthalic acid. [0003] PTA is an important bulk organic raw material, which is widely used in all aspects of people's life and national economy. Most of the PTA in the world is used to produce synthetic materials. Harmful microorganisms existing in people's living environment parasi...

Claims

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Application Information

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IPC IPC(8): C08G63/83C08G63/183C08K13/06C08K9/00C08K9/12C08K3/04C08K3/22C08K3/30C08K7/10C08K3/32D01F6/92D01F1/10
Inventor 李琪凌荣根陶仁中胡克勤范艳苹胡超
Owner ZHEJIANG MODERN TEXTILE IND RES INST
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