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A preparation method and product of a superhydrophobic polymer composite coating containing nanoparticles

A technology of nano-particles and composite coatings, which is applied in the treatment of dyed low-molecular organic compounds, coatings, and dyed organic silicon compounds. It can solve the problems of complex preparation processes and harsh conditions, and achieve low cost and simple methods. Effect

Active Publication Date: 2016-09-07
中国人民武装警察部队杭州士官学校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the technical problems such as the complex preparation process and harsh conditions of adding nano-particle hydrophobic materials, the present invention proposes a simple method for preparing a super-hydrophobic polymer composite coating containing nanoparticles. Modification, while eliminating the pH adjustment process in the process of hydrophobic treatment of nanoparticles, the modified nanoparticles are added to the polymer composite coating, through the bonding of nanoparticles-coupling agent and the long chain of fluoropolymer molecules interaction to achieve stability

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  • A preparation method and product of a superhydrophobic polymer composite coating containing nanoparticles
  • A preparation method and product of a superhydrophobic polymer composite coating containing nanoparticles
  • A preparation method and product of a superhydrophobic polymer composite coating containing nanoparticles

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Effect test

Embodiment 1

[0035] (1) Superhydrophobic modification of nanoparticles

[0036] 5 mL of aminopropyltriethoxysilane (Nanjing Pinning Coupling Agent Co., Ltd., KH-550) was hydrolyzed in 10 mL of methanol and 100 mL of deionized water at room temperature for 2 h, and silica (particle size 15 ± 5nm, Aladdin Reagent Co., Ltd.) 6g modification reaction 1h. Cool to room temperature, suction filter, wash, dry at 130°C overnight and lightly grind to obtain modified particle powder. After the powder passes through a 100-mesh stainless steel sieve, take 0.12g and add it to 3.00g polyperfluoroethylene propylene emulsion (Shanghai Puchun Industrial Co., Ltd., FEPD121), dilute with 0.5g N, N-dimethylformamide to an appropriate concentration , followed by magnetic stirring for 30 minutes and ultrasonic dispersion for 20 minutes to obtain the coating.

[0037] (2) Coating and curing of paint on the surface of metal materials

[0038] The paint is applied on the steel that has been sanded and cleaned, h...

Embodiment 2

[0040] (1) Superhydrophobic modification of nanoparticles

[0041] 5 mL of glycidyl etheroxypropyl trimethoxysilane (Nanjing Pinning Coupling Agent Co., Ltd., KH-560) was hydrolyzed in 10 mL of isopropanol and 100 mL of deionized water at room temperature for 3 h, and aluminum oxide ( 30nm, Aladdin Reagent Co., Ltd.) 6g modification reaction 2h. Cool to room temperature, suction filter, wash, dry at 130°C overnight and lightly grind to obtain modified particle powder. After the powder passes through a 100-mesh stainless steel sieve, take 0.24g and add it to 3.00g polytetrafluoroethylene emulsion (Guangdong Likalong Technology Co., Ltd., viscosity is 750-800cst), dilute with 0.5g methylpyrrolidone to an appropriate concentration, and then successively The coating was obtained by magnetic stirring for 30 minutes and ultrasonic dispersion for 20 minutes.

[0042] (2) Coating and curing of paint on the surface of metal materials

[0043] The coating is applied on the aluminum m...

Embodiment 3

[0046] (1) Superhydrophobic modification of nanoparticles

[0047] 5mL of γ-(methacryloyloxy)propyltrimethoxysilane (Nanjing Pinning Coupling Agent Co., Ltd., KH-570) was hydrolyzed in 10mL of carbon tetrachloride and 100mL of deionized water at room temperature for 4 hours, and the Add 6 g of silicon dioxide (particle size: 15±5 nm, Aladdin Reagent Co., Ltd.) into the water bath for modification reaction for 3 h. Cool to room temperature, suction filter, wash, dry at 130°C overnight and lightly grind to obtain modified particle powder. After the powder passes through a 100-mesh stainless steel sieve, take 0.36g and add it to 3.00g ethylene tetrafluoroethylene copolymer emulsion (Shanghai Puchun Industrial Co., Ltd., F-40), dilute with 0.5g acetone to a suitable concentration, and then magnetically stir for 30min successively and ultrasonic dispersion for 20min to obtain the coating.

[0048] (2) Coating and curing of paint on the surface of metal materials

[0049] The pai...

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Abstract

The invention discloses a method for preparing a super hydrophobic polymer composite coating containing nano particles. The method comprises the following steps: firstly, mixing a coupling agent with a hydrolysis promoter and deionized water to carry out hydrolysis at normal temperature; adding the nano particles, reacting at 50-100 DEG C for 0.25-5 hours under magnetic agitation, so as to obtain modified nano particle powder by post-treatment; sieving the modified nano particle powder, and mixing with a fluorine-containing polymer emulsion; and evenly agitating after diluting by a diluent, coating on a metal substrate, and cooling to room temperature after high-temperature solidification and annealing treatment. The invention proposes a simple method for preparing the super hydrophobic polymer composite coating containing the nano particles. The nano particles are modified by the coupling agent, meanwhile, the adjusting process of pH in the hydrophobic treating process of the nano particles is removed, the modified nano particles are added to the polymer composite coating, and the stable target is achieved by interaction of bonding of a nano particle-coupling agent and a fluorine-containing polymer molecular chain.

Description

technical field [0001] The invention relates to the field of preparation of polymer composite coatings, in particular to a preparation method of a superhydrophobic polymer composite coating containing nanoparticles and a product thereof. Background technique [0002] Fluoropolymers are substances with relatively low surface energy, low friction and high temperature corrosion resistance, which make them widely used in the field of hydrophobic and non-stick. The intrinsic hydrophobic angle of fluorine-containing polymers is 90°-110°, which is still far from the requirement of hydrophobicity. Although fluoropolymers are materials with good hydrophobic potential applications, so far there are few studies on the hydrophobic properties of fluoropolymers. The main reason is that fluoropolymers are saturated with -CF 2 The structure determines its chemical inertness, and its polymer polymerization modification may not necessarily achieve the desired effect. [0003] The use of ino...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/18C09D123/08C09D129/10C09D7/12C09C1/28C09C1/40C09C1/36C09C3/08C09C3/12
Inventor 陈尔余王海斌王琦贾贤补
Owner 中国人民武装警察部队杭州士官学校
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