CN104140692B - Modified nano-titanium dioxide that a kind of hydrophobic effect is good and preparation method thereof - Google Patents

Abstract

The invention discloses a modified nano-titanium dioxide with good hydrophobic effect, which is characterized in that it is prepared from the following raw materials in parts by weight: nano-titanium dioxide 85-90, polyurethane 6-7, zinc oxide 2-3, Titanate coupling agent TC-114? 0.8-1.2, magnesium aluminum spinel powder 1-2, methyl methacrylate 3-5, high-density polyethylene 4-6, aluminum nitride 1-1.5, dioxypentoxide Vanadium 1.5-2.5, modified silica 2-3; the present invention changes the surface properties of nano-titanium dioxide by adding oxidative and other inorganic waterproof components and polyurethane and other organic waterproof components, and the prepared nano-titanium dioxide powder is not only It has very good hydrophobicity and excellent light stability, and the high molecular polymer is fully mixed with the powder through a special treatment method, which increases the strength of the powder, and is convenient to operate and easy to control.

Description

A kind of modified nano-titanium dioxide with good hydrophobic effect and preparation method thereof

technical field

The invention relates to the field of industrial fillers, in particular to a modified nano-titanium dioxide with good hydrophobic effect and a preparation method thereof.

Background technique

Nano-titanium dioxide is an important multi-purpose inorganic functional material with many excellent properties. It is widely used in the automotive industry, cosmetics, wastewater treatment, coatings and other industries. Emulsion method, airgel method, titanium alkoxide pyrolysis method, and chemical vapor deposition method; however, no matter what method is used, the nano-titanium dioxide prepared is hydrophilic, and it is difficult to disperse uniformly in the organic medium, thus limiting the production capacity of nano-titanium dioxide. Applications. After the modification of nano-titanium dioxide particles, the hydrophilicity of its surface can be transformed into hydrophobicity, and a series of properties such as light absorption, potential, wetting, and dispersion will be significantly improved, and its application fields will be further broadened, and its advantages will be further expanded. Excellent performance.

Contents of the invention

The purpose of the present invention is to provide a modified nano-titanium dioxide with good hydrophobic effect and a preparation method thereof.

In order to realize the purpose of the present invention, the present invention is implemented through the following schemes:

A modified nano-titanium dioxide with good hydrophobic effect is prepared from the following raw materials in parts by weight: nano-titanium dioxide 85-90, polyurethane 6-7, zinc oxide 2-3, titanate coupling agent TC- 1140.8-1.2, magnesium aluminum spinel powder 1-2, methyl methacrylate 3-5, high-density polyethylene 4-6, aluminum nitride 1-1.5, vanadium pentoxide 1.5-2.5, modified silica 2-3;

The modified silicon dioxide is made of the following raw materials in parts by weight: silicon dioxide 55-60, nano jade powder 4-6, white corundum powder 5-7, silane coupling agent kh5601-2, nano barium sulfate 1- 2. Acrylic acid-2-hydroxyethyl ester 3-4, dimethyl fumarate 3-5, cobalt naphthenate 2-4, water 50-60; the preparation method is to add nano silicon dioxide, nano jade powder, Silane coupling agent kh560, nano-barium sulfate, and water are stirred evenly, then white corundum powder, 2-hydroxyethyl acrylate, and dimethyl fumarate are added, heated to 130-150°C, mixed and stirred for 25-35 minutes, cooled to room temperature, then add the remaining ingredients, stir at 1200-1500 rpm for 1-2 hours, dry at 60-70°C, and grind to obtain the product.

A modified nano-titanium dioxide with good hydrophobic effect described in the present invention is made by the following specific steps:

(1) Mix nano-titanium dioxide, zinc oxide, titanate coupling agent TC-114, and vanadium pentoxide evenly into the grinder, grind at a speed of 1500-2000 rpm for 15-20 minutes, pulverize and grind finely, Get mixed powder for later use;

(2) Put high-density polyethylene, aluminum nitride, and magnesium-aluminum spinel powder into the mixing tank, heat up to 80-90°C, stir for half an hour, and continue to add polyurethane, methyl methacrylate Esters, continue to heat up to 130-160°C, stir for 15-20 minutes and then pour out to obtain rubber powder;

(3) Mix the mixed powder and rubber powder evenly, add an appropriate amount of water, stir evenly, ultrasonically oscillate at 80°C for 1-2 hours, and then continue grinding for 20-30 minutes to form a suspension for use;

(4) Mix the suspension with modified silicon dioxide, stir at 800-1000 rpm for 10-15 minutes, dry, and put it into a nano pulverizer to pulverize.

The beneficial effects of the present invention are: the present invention changes the surface properties of nano-titanium dioxide by adding inorganic waterproof components such as oxidative properties and organic waterproof components such as polyurethane, and the prepared nano-titanium dioxide powder not only has good hydrophobicity, Moreover, it has excellent light stability, and the high molecular polymer is fully mixed with the powder through a special treatment method, which increases the strength of the powder, and is convenient to operate and easy to control.

specific implementation plan

The present invention will be described in detail below through specific examples.

A modified nano-titanium dioxide with good hydrophobic effect is prepared from the following raw materials in parts by weight (kg): nano-titanium dioxide 85, polyurethane 6, zinc oxide 2, titanate coupling agent TC-1140.8, magnesium Aluminum spinel powder 1, methyl methacrylate 3, high-density polyethylene 4, aluminum nitride 1, vanadium pentoxide 1.5, modified silicon dioxide 2;

The modified silicon dioxide is made of the following raw materials in parts by weight (kg): silicon dioxide 55, nano jade powder 6, white corundum powder 5, silane coupling agent kh5601, nano barium sulfate 2, acrylic acid-2-hydroxy Ethyl fat 3, dimethyl fumarate 3, cobalt naphthenate 2, water 50; the preparation method is to first add nano silicon dioxide, nano jade powder, silane coupling agent kh560, nano barium sulfate, water and stir evenly, then Add white corundum powder, 2-hydroxyethyl acrylate, and dimethyl fumarate, heat to 130-150°C, mix and stir for 25-35 minutes, cool to room temperature, then add the remaining ingredients, 1200-1500 rpm Stir for 1-2 hours under the same conditions, dry at 60-70°C, and grind to obtain the product.

A modified nano-titanium dioxide with good hydrophobic effect described in the present invention is made by the following specific steps:

(1) Mix nano-titanium dioxide, zinc oxide, titanate coupling agent TC-114, and vanadium pentoxide evenly into the grinder, grind at a speed of 1500-2000 rpm for 15-20 minutes, pulverize and grind finely, Get mixed powder for later use;

(2) Put high-density polyethylene, aluminum nitride, and magnesium-aluminum spinel powder into the mixing tank, heat up to 80-90°C, stir for half an hour, and continue to add polyurethane, methyl methacrylate Esters, continue to heat up to 130-160°C, stir for 15-20 minutes and then pour out to obtain rubber powder;

(3) Mix the mixed powder and rubber powder evenly, add an appropriate amount of water, stir evenly, ultrasonically oscillate at 80°C for 1-2 hours, and then continue grinding for 20-30 minutes to form a suspension for use;

(4) Mix the suspension with modified silicon dioxide, stir at 800-1000 rpm for 10-15 minutes, dry, and put it into a nano pulverizer to pulverize.

The specific surface area of the modified nano-titanium dioxide obtained in this example increases significantly

sample Raw Nano Titanium Dioxide Modified Nano Titanium Dioxide Specific surface area/m ² /g 90-200 160-250

Claims (1)

1. A modified nano-titanium dioxide with good hydrophobic effect, characterized in that it is prepared from the following raw materials in parts by weight: nano-titanium dioxide 85-90, polyurethane 6-7, zinc oxide 2-3, titanic acid Ester coupling agent TC-1140.8-1.2, magnesium aluminum spinel powder 1-2, methyl methacrylate 3-5, high-density polyethylene 4-6, aluminum nitride 1-1.5, vanadium pentoxide 1.5-2.5 , Modified silica 2-3; The modified silicon dioxide is made of the following raw materials in parts by weight: silicon dioxide 55-60, nano jade powder 4-6, white corundum powder 5-7, silane coupling agent kh5601-2, nano barium sulfate 1- 2. Acrylic acid-2-hydroxyethyl ester 3-4, dimethyl fumarate 3-5, cobalt naphthenate 2-4, water 50-60; the preparation method is to add nano silicon dioxide, nano jade powder, Silane coupling agent kh560, nano-barium sulfate, and water are stirred evenly, then white corundum powder, 2-hydroxyethyl acrylate, and dimethyl fumarate are added, heated to 130-150°C, mixed and stirred for 25-35 minutes, cooled to room temperature, then add the remaining ingredients, stir at 1200-1500 rpm for 1-2 hours, dry at 60-70°C, and grind to obtain the product; The modified nano-titanium dioxide with good hydrophobic effect is made by the following specific steps: (1) Mix nano-titanium dioxide, zinc oxide, titanate coupling agent TC-114, and vanadium pentoxide evenly into the grinder, grind at a speed of 1500-2000 rpm for 15-20 minutes, pulverize and grind finely, Get mixed powder for later use; (2) Put high-density polyethylene, aluminum nitride, magnesium aluminum spinel powder into the mixing tank, heat up to 80-90°C, stir for half an hour, continue to add polyurethane, methyl methacrylate Esters, continue to heat up to 130-160°C, stir for 15-20 minutes and then pour out to obtain rubber powder; (3) Mix the mixed powder and rubber powder evenly, add an appropriate amount of water, stir evenly, oscillate ultrasonically at 80°C for 1-2 hours, and then continue grinding for 20-30 minutes to form a suspension for use; (4) Mix the suspension with modified silicon dioxide, stir at 800-1000 rpm for 10-15 minutes, dry, and put it into a nano pulverizer to pulverize.