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A kind of preparation method of aluminum silver paste pigment and the product thereof

An aluminum-silver paste and pigment technology, which is applied in the directions of pigment paste, inorganic pigment treatment, chemical instruments and methods, etc., can solve the problems of coating peeling, poor stability of aluminum-silver paste, and product quality to be improved. The effect of reducing oxidation, good silver-white metallic luster, improving product quality and market competitiveness

Active Publication Date: 2021-10-29
SHANGHAI TITANOS IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned related technologies, the inventors found that the aluminum-silver paste produced by the above-mentioned method has poor stability. After coating and forming a film, the coating sometimes partially peels off, and the product quality needs to be improved.

Method used

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  • A kind of preparation method of aluminum silver paste pigment and the product thereof
  • A kind of preparation method of aluminum silver paste pigment and the product thereof
  • A kind of preparation method of aluminum silver paste pigment and the product thereof

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Embodiment 1

[0044] A method for preparing an aluminum-silver paste pigment, comprising the following steps: step 1, melting the aluminum powder at 700°C, stirring at a speed of 40r / min, and gradually adding phosphite antioxidants, the phosphite antioxidants are formed by Composed of 0.02kg of trilauryl phosphite, 0.05kg of diphenyl phosphite and 0.03kg of tri-isooctyl phosphite, mixed evenly, kept warm for 40min, and then cooled to below 50°C to obtain the primary product;

[0045] Step 2. Break the primary product into 0.3mm particles, add 10ml of aviation gasoline, and mix evenly to prepare a mixture. The mixture is subjected to a vacuum sintering process, and the sintering process temperature is raised to 970°C at a heating rate of 3.5-4°C / min. , and keep it warm for 2-3h, then cool down to below 60°C to obtain a semi-finished product;

[0046] Step 3: Put the semi-finished product through jet milling process to make 15-25μm powder, mix 0.1kg of diphenylmethane diisocyanate with the ab...

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Abstract

This application relates to the field of aluminum-silver paste pigments, and specifically discloses a preparation method of aluminum-silver paste pigments and the products thereof, including the following steps: step 1, melting aluminum powder, adding phosphite antioxidants and mixing uniformly , to obtain the primary product; step 2, crushing the primary product, adding aviation gasoline, and carrying out a vacuum sintering process to obtain a semi-finished product; step 3, making the semi-finished product into powder, mixing diphenylmethane diisocyanate and the above powder evenly, Raise the temperature to 70-90°C, add polyol while stirring, and then perform ultrasonic treatment to obtain a slurry; step 4, perform deoiling and centrifugal deoiling on the slurry, and dry the material after centrifugal deoiling to obtain solid particles; step 5, adding hydrogenated castor oil and coupling agent to the solid particles for kneading to obtain aluminum silver paste pigments. The prepared aluminum-silver paste pigment has good silver-white metallic luster, excellent adhesion level and good product stability.

Description

technical field [0001] The application relates to the technical field of aluminum-silver paste pigments, more specifically, it relates to a preparation method of aluminum-silver paste pigments and the products prepared therefrom. Background technique [0002] Aluminum silver paste pigment is an important and indispensable metal pigment in modern industrial products. Its main components are flake-like aluminum particles and solvents, and it is in the form of paste. It is characterized by smooth and flat surface of aluminum flakes, concentrated particle size distribution, regular shape, excellent light reflection ability and metallic luster. It can be used alone in paints, inks, and plastics to produce silver metallic effects; it can also be used in conjunction with other pigments , to produce a metallic effect in different colors such as gold. [0003] Aluminum silver paste pigments are divided into two types: floating type and non-leafing type. In the floating aluminum sil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/64C09C3/04C09C3/08C09C3/10C09D17/00C09D7/62
CPCC09C1/646C09C3/006C09C3/04C09C3/041C09C3/043C09C3/045C09C3/08C09C3/10C09D17/006C09D7/62
Inventor 周仲华王扬宁科成
Owner SHANGHAI TITANOS IND