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Preparation method of fluoride-free waterproof agent and product thereof

A fluorine-free water repellent and catalyst technology, applied in textiles and papermaking, liquid-repellent fibers, fiber treatment, etc., can solve the problems that fluorine-free water repellents are difficult to achieve waterproof effect, limited application, and the waterproof effect is not durable enough, etc. Achieve the effect of improving waterproof effect, high market prospect and strong adhesion

Pending Publication Date: 2020-11-17
染格材料科技(上海)有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Fluorine-containing water repellents have outstanding waterproof effects due to the excellent surface properties of fluorine-based substances, while fluorine-free water repellents are usually difficult to achieve a similar waterproof effect to fluorine-containing water repellents, so their applications are limited
Chinese patent CN108893985 discloses a fluorine-free waterproofing agent and its preparation method, which records a fluorine-free waterproofing agent containing nano-silica, but this type of waterproofing agent has compatibility between inorganic materials and organic materials problem, making the waterproof effect not durable enough

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  • Preparation method of fluoride-free waterproof agent and product thereof
  • Preparation method of fluoride-free waterproof agent and product thereof

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preparation example Construction

[0019] In order to solve the above problems, the first aspect of the present invention provides a kind of preparation method of fluorine-free waterproofing agent, comprises the following steps:

[0020] a. Mix organic solvent, catalyst and water, add tetraethyl orthosilicate and silane to obtain mixed solution;

[0021] b. Mix the above mixed solution, an alkane derivative with a carbon number ≥ 10, an emulsifier, an initiator, and water to obtain a fluorine-free waterproofing agent.

[0022] Step a in this application is the preparation of the modified nano silicon dioxide mixed solution.

[0023] From the perspective of increasing the reaction rate, in some preferred embodiments, the organic solvent is selected from a mixture of one or more of ethanol, ether, methanol, acetone, isopropanol, and tetrahydrofuran; further preferably, the The organic solvent is selected from one or more mixtures of ethanol, ether, and methanol.

[0024] In some preferred embodiments, the catal...

Embodiment 1

[0053] Embodiment 1 provides a kind of preparation method of fluorine-free waterproofing agent, comprises the following steps:

[0054] a. Mix 900g of absolute ethanol and 320g of water, adjust the pH to 3 with hydrochloric acid, stir at 55°C for 25min, and add dropwise 360g of tetraethyl orthosilicate and 10g of 3-glycidyl etheroxypropylmethyldiethoxy base silane, stirred at 60°C for 60 min to obtain a mixed solution.

[0055] b. Under nitrogen protection, mix 100g of the mixed solution in step a, 15g of dodecanol, 10g of cardanol polyoxyethylene polyoxypropylene ether (purchased from Shandong Youso Chemical Technology Co., Ltd., brand BGF-6), 2g Mix ammonium persulfate and 30g of water, and react at 80°C for 2 hours to obtain a fluorine-free waterproofing agent.

Embodiment 2

[0057] Embodiment 2 provides a kind of preparation method of fluorine-free waterproofing agent, comprises the following steps:

[0058] a. Mix 900g of absolute ethanol and 320g of water, adjust the pH to 10 with ammonia water, stir at 55°C for 25min, and add dropwise 360g of tetraethyl orthosilicate and 10g of 3-glycidyloxypropyltriethoxysilane , and stirred at 60°C for 60 min to obtain a mixed solution.

[0059] b. Under the protection of nitrogen, the mixed solution in 100g step a, 15g methyl octadecanoate, 10g linear fatty alcohol polyoxyethylene ether (purchased from Jiangsu Haian Petrochemical Plant, brand OE-2), 2g over Mix ammonium sulfate and 30g of water, adjust the pH to 8, and react at 80°C for 2 hours to obtain a fluorine-free waterproofing agent.

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Abstract

The invention discloses a preparation method of a fluoride-free waterproof agent. The preparation method comprises the following steps of a, mixing an organic solvent, a catalyst and water, and addingtetraethyl orthosilicate and silane to obtain a mixed solution; and b, mixing the mixed solution, an alkane derivative with the carbon atom number of more than or equal to 10, an emulsifier, an initiator and water to obtain the fluoride-free waterproof agent. According to the method, through tight combination of inorganic materials and organic molecules, secondary roughness can be constructed onthe rough surface of a fabric, the surface tension of the fabric is reduced, and the waterproof effect of the fabric is improved; and besides, the adhesive force between the waterproof agent and the surface of the fabric is high, excellent waterproof performance can be kept for a long time, and the market prospect is extremely high.

Description

technical field [0001] The invention relates to the field of textile auxiliaries, in particular to a preparation method of a fluorine-free waterproofing agent and products thereof. Background technique [0002] With the advancement of science and technology and the development of the economy, human beings have higher and higher requirements for the functionality of textiles, and fabrics with waterproof functions are gradually being used because of their special functions. In the process of textile processing, fabrics can be endowed with excellent waterproof properties by padding waterproofing agents and waterproofing coatings. Fluorine-containing waterproofing agents have once become the most popular waterproofing aids in the market due to their excellent waterproofing performance and stability. However, with the deepening of research, researchers found that fluorine-containing waterproofing agents have problems such as refractory degradation and bioaccumulation toxicity. T...

Claims

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Application Information

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IPC IPC(8): D06M13/513D06M11/74D06M15/53
CPCD06M13/513D06M11/74D06M15/53D06M2200/12Y02W30/91
Inventor 高琴文卓文明
Owner 染格材料科技(上海)有限公司
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