SiO2 aerogel modified polypropylene melt-blown nonwoven material and preparation method thereof

A non-woven material, polypropylene melt-blown technology, applied in non-woven fabrics, single-component polyolefin rayon, melt spinning and other directions, can solve problems such as the oil absorption ratio to be improved, and achieve low production cost and simple process. , the effect of good mechanical properties

Inactive Publication Date: 2020-04-21
宿迁市美达净化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its oil absorption ratio needs to be improved

Method used

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  • SiO2 aerogel modified polypropylene melt-blown nonwoven material and preparation method thereof
  • SiO2 aerogel modified polypropylene melt-blown nonwoven material and preparation method thereof
  • SiO2 aerogel modified polypropylene melt-blown nonwoven material and preparation method thereof

Examples

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preparation example Construction

[0034] A preparation method of silica airgel modified polypropylene melt-blown nonwoven material, the steps are as follows:

[0035] (1) Hydrophobic SiO 2 Preparation of airgel

[0036] Add 52ml of tetraethylorthosilicate, 221ml of absolute ethanol, and 13ml of deionized water into the beaker, and adjust the pH value to 3 with a hydrochloric acid ethanol solution with a concentration of 1mol / L. After stirring for 50 minutes, add ammonia water ethanol solution with a volume ratio of 1:20 to adjust the pH of the solution to 6, and then stir for 20 minutes to obtain SiO 2 Sol. Gel at room temperature. After gelling, the SiO 2 The wet gel was soaked in absolute ethanol, aged at room temperature for 2 days, and the aged SiO 2 The wet gel was soaked in hexamethyldisilazane for 2d for surface modification. After surface modification, the SiO 2 The wet gel was soaked in absolute ethanol and aged at room temperature for 2 days. The aged composite was subjected to CO 2 Supercri...

Embodiment 1

[0051] A preparation method of silica airgel modified polypropylene melt-blown nonwoven material, the steps are as follows

[0052] (1) Add 52ml of tetraethylorthosilicate, 221ml of absolute ethanol, and 13ml of deionized water into a beaker, and adjust the pH value to 3 with a hydrochloric acid ethanol solution with a concentration of 1mol / l. After stirring for 50 minutes, add ammonia water ethanol solution with a volume ratio of 1:20 to adjust the pH of the solution to 6, and then stir for 20 minutes to obtain SiO 2 Sol. Gel at room temperature. After gelling, the SiO 2 The wet gel was soaked in absolute ethanol, aged at room temperature for 2 days, and the aged SiO 2 The wet gel was soaked in hexamethyldisilazane for 2d for surface modification. After surface modification, the SiO 2 The wet gel was soaked in absolute ethanol and aged at room temperature for 2 days. The aged composite was subjected to CO 2 Supercritical drying treatment to obtain hydrophobic SiO 2 Ai...

Embodiment 2

[0057] A preparation method of silica airgel modified polypropylene melt-blown nonwoven material, the steps are as follows:

[0058] (1) Add 52ml of tetraethylorthosilicate, 221ml of absolute ethanol, and 13ml of deionized water into a beaker, and adjust the pH value to 3 with a hydrochloric acid ethanol solution with a concentration of 1mol / l. After stirring for 50 minutes, add ammonia water ethanol solution with a volume ratio of 1:20 to adjust the pH of the solution to 6, and then stir for 20 minutes to obtain SiO 2 Sol. Gel at room temperature. After gelling, the SiO 2 The wet gel was soaked in absolute ethanol, aged at room temperature for 2 days, and the aged SiO 2 The wet gel was soaked in hexamethyldisilazane for 2d for surface modification. After surface modification, the SiO 2 The wet gel was soaked in absolute ethanol and aged at room temperature for 2 days. The aged composite was subjected to CO 2 Supercritical drying treatment to obtain hydrophobic SiO 2 A...

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Abstract

The invention provides a preparation method of an SiO2 (Silicon Dioxide) aerogel modified polypropylene melt-blown nonwoven material. The preparation method comprises the following steps of (1) usingtetraethyl orthosilicate as a silicon source, preparing SiO2 aerogel by a sol-gel method, and performing crushing after the SiO2 aerogel is subjected to hydrophobic modification to obtain hydrophobicSiO2 aerogel powder; (2) mixing the hydrophobic SiO2 aerogel powder with polypropylene slices, and performing melting granulation to obtain an SiO2 aerogel/ polypropylene composite masterbatch; and (3) performing melt-blowing after the SiO2 aerogel/ polypropylene composite masterbatch and pure polypropylene are mixed to prepare the SiO2 aerogel modified polypropylene melt-blown nonwoven material.Compared with a polypropylene melt-blown nonwoven material before modification, the modified material has higher oil absorption performance and a higher oil holding rate. The SiO2 aerogel modified polypropylene melt-blown nonwoven material provided by the invention has good mechanical properties, low production cost and a simple process, is hopeful to realize scaled production, and can be used foremergency treatment of oil stain and oil spilling leakage.

Description

technical field [0001] The invention relates to a silica airgel modified polypropylene melt-blown nonwoven material, which is made of hydrophobic SiO 2 Airgel and polypropylene are prepared as raw materials for meltblown nonwovens. Background technique [0002] Airgel is a nanoporous network structure formed by the aggregation of nanoparticles. It has the characteristics of low thermal conductivity, high porosity, and high specific surface area. It has broad application prospects in the fields of heat insulation and adsorption. Commercial polypropylene melt-blown non-woven materials, the fiber diameter can reach micron level, these superfine fibers with capillary structure increase the number of fibers per unit area and the specific surface area, so that the melt-blown cloth has good filterability, oil absorption, etc., can be used for Air and liquid filtration, oil absorption and other fields. However, its oil absorption ratio needs to be improved. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D04H1/4291D01D1/04D01D1/06D01D1/09D01D5/08D01F1/10
CPCD04H1/4291D01D5/08D01D1/04D01D1/065D01D1/09D01F6/46D01F1/10D10B2505/00
Inventor 崔升沈晓冬李建平刘伟宋梓豪杨照军
Owner 宿迁市美达净化科技有限公司
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