CN104610803A

CN104610803A - Activated rice hull ash-containing polyethylene powder coating for metal corrosion prevention and preparation method thereof

Info

Publication number: CN104610803A
Application number: CN201510054522.4A
Authority: CN
Inventors: 张庆
Original assignee: Wuhu Baoyi Amusement Equipment Co Ltd
Current assignee: Wuhu Baoyi Amusement Equipment Co Ltd
Priority date: 2015-02-02
Filing date: 2015-02-02
Publication date: 2015-05-13

Abstract

The invention relates to a polyethylene powder coating and in particular relates to an activated rice hull ash-containing polyethylene powder coating for metal corrosion prevention and a preparation method thereof. The powder coating is prepared from the following raw materials in parts by weight: 0.2-0.5 part of tolytriazole sodium salt, 1-2 parts of polyoxyethylene, 4-6 parts of rice hull ash, 5-8 parts of silicone master batch, 4-5 parts of acetyl tri-n-butyl citrate, 2-3 parts of vinyl trialkylsilane, 0.01-0.02 part of lemongrass oil, 0.3-0.5 part of potassium permanganate, 5-8 parts of pigments, 2-3 parts of an antioxidant and 50-60 parts of polyethylene. The low-cost rice hull ash is subjected to modified activation treatment, the compatibility between the rice hull ash and a high polymer material is greatly improved, the reinforcing effect is good, the raw material utilization rate is improved, and other components are combined. The prepared polyethylene powder coating has excellent liquidity and adhesiveness during use, is flat, firm, difficult to crack and drop, antibacterial, preservative and fragrant in smell, contains metal corrosion-resistant components and is especially suitable for coating the surface of metal materials.

Description

A kind of anti-corrosion of metal polyethylene powder coating containing activation rice hull ash and preparation method thereof

Technical field

The present invention relates to a kind of polyethylene powder coating, be specifically related to a kind of anti-corrosion of metal polyethylene powder coating containing activation rice hull ash and preparation method thereof.

Background technology

Polyethylene powder coating occupies very large proportion in existing thermoplastic powder coating, its advantage main manifestations is that raw material is cheap, resistance to chemical attack, good electrical insulating property and low-temperature stability, but its shortcoming is also obvious, during use, physical strength is poor, and film adhesive is poor, easily chaps in surface, anticorrosion and weathering resistance also has much room for improvement, expanding the use range of polyethylene powder coating to continue, improving its competitive power in like product, improving its use properties imperative.

The poly performance approach of current improvement is mainly divided into physically modified and chemical modification two kinds of methods, although these method of modifying are all widely used at present, also positive effect has been played at the aspect of performance improving polyethylene powder coating, but, no matter be modified filler, the macromolecular material of blending and modifying or grafting, cross-linking monomer, consistency and the binding activities of they and polyethylene base-material are particularly important, are also to ensure modification efficiency, improve the basic of raw material availability; Therefore improve the performance that these tradition are material modified, simultaneously in conjunction with the use of novel material, the polyethylene powder coating that performance is more excellent can be developed.

Summary of the invention

The object of the invention is to, prepare a kind of anti-corrosion of metal polyethylene powder coating containing activation rice hull ash and preparation method thereof, the material modified activity of wherein adding is improved, and modification efficiency is higher, to achieve these goals, the technical solution used in the present invention is as follows:

A kind of anti-corrosion of metal polyethylene powder coating containing activation rice hull ash and preparation method thereof, it is characterized in that, this powder coating is made up of the raw material of following weight part: benzotriazole sodium 0.2-0.5, polyoxyethylene 1-2, rice hull ash 4-6, silicone master batch 5-8, acetyl tributyl citrate 4-5, vinyl trialkyl silane 2-3, lemongrass essential oil 0.01-0.02, potassium permanganate 0.3-0.5, pigment 5-8, oxidation inhibitor 2-3, polyethylene 50-60;

Described a kind of anti-corrosion of metal polyethylene powder coating containing activation rice hull ash and preparation method thereof, its preparation method is:

(1) first rice hull ash is calcined 2-3h in the nitrogen atmosphere of 500-600 DEG C, pulverize after being cooled to room temperature subsequently as 400-600 order micro mist, obtain pre-activate rice hull ash micro mist, again pre-activate rice hull ash micro mist being dropped into the concentration be mixed with by potassium permanganate is subsequently in the aqueous solution of 30-50g/L, soak 40-60min, subsequent filtration, after filtrate washes 3-5 time with water, add the vinyl trialkyl silane of 0.5-0.8 weight part, high-speed stirring mixing 1.5-2h, obtains modified active rice hull ash micro mist for subsequent use;

(2) polyoxyethylene is dissolved in the water of 10-15 weight part, again silicone master batch is dropped in polyvinyl alcohol water solution together with polyethylene, after high-speed stirring mixing 40-60min, mixture is dried removing moisture, last modified active rice hull ash micro mist and other remaining component adding step (1) gained again, pre-mixing 1-2h, drop into melting mixing extruding pelletization in twin screw extruder subsequently, pellet is sent into after fine powder worn into by pulverizing mill and is entered powder shifter classification again, to obtain final product.

The advantage of modified poly ethylene powder coating prepared by the present invention is: the rice hull ash of low cost is carried out modified active process, greatly improve the consistency of itself and macromolecular material, reinforcing effect is better, raw material availability improves, again in conjunction with other composition, obtained polyethylene powder coating shows good mobility and tack when using, coating is firmly smooth, not easy to crackly to come off, Antimicrobial preservative, fragrant, wherein containing preventing metal corrosion composition, is especially applicable to metal material surface application and uses.

Embodiment

The coating of the present embodiment is made up of the raw material of following weight part: benzotriazole sodium 0.4, polyoxyethylene 1.5, rice hull ash 5, silicone master batch 6, acetyl tributyl citrate 4, vinyl trialkyl silane 2.5, lemongrass essential oil 0.01, potassium permanganate 0.4, pigment 6, oxidation inhibitor 2, polyethylene 55.

The preparation method of this powder coating is:

(1) first rice hull ash is calcined 3h in the nitrogen atmosphere of 500-600 DEG C, pulverizing after being cooled to room temperature is subsequently 600 order micro mists, obtain pre-activate rice hull ash micro mist, again pre-activate rice hull ash micro mist being dropped into the concentration be mixed with by potassium permanganate is subsequently in the aqueous solution of 40g/L, soaks 50min, subsequent filtration, after filtrate washes 4 times with water, add the vinyl trialkyl silane of 0.6 weight part, high-speed stirring mixing 1.8h, obtains modified active rice hull ash micro mist for subsequent use;

(2) polyoxyethylene is dissolved in the water of 14 weight parts, again silicone master batch is dropped in polyvinyl alcohol water solution together with polyethylene, after high-speed stirring mixing 55min, mixture is dried removing moisture, last modified active rice hull ash micro mist and other remaining component adding step (1) gained again, pre-mixing 1.8h, drop into melting mixing extruding pelletization in twin screw extruder subsequently, pellet is sent into after fine powder worn into by pulverizing mill and is entered powder shifter classification again, gets the product packing of 200-300 order and get final product.

Polyethylene powder coating the performance test results obtained by the present embodiment is:

Claims

1. anti-corrosion of metal polyethylene powder coating containing activation rice hull ash and preparation method thereof; it is characterized in that, this powder coating is made up of the raw material of following weight part: benzotriazole sodium 0.2-0.5, polyoxyethylene 1-2, rice hull ash 4-6, silicone master batch 5-8, acetyl tributyl citrate 4-5, vinyl trialkyl silane 2-3, lemongrass essential oil 0.01-0.02, potassium permanganate 0.3-0.5, pigment 5-8, oxidation inhibitor 2-3, polyethylene 50-60.

2. a kind of containing anti-corrosion of metal polyethylene powder coating activating rice hull ash and preparation method thereof as claimed in claim 1, its preparation method is:

(1) first rice hull ash is calcined 2-3h in the nitrogen atmosphere of 500-600 DEG C, pulverize after being cooled to room temperature subsequently as 400-600 order micro mist, obtain pre-activate rice hull ash micro mist, again pre-activate rice hull ash micro mist being dropped into the concentration be mixed with by potassium permanganate is subsequently in the aqueous solution of 30-50g/L, soaks 40-60min, subsequent filtration, after filtrate washes 3-5 time with water, add the vinyl trialkyl silane of 0.5-0.8 weight part, high-speed stirring mixing 1.5-2h, obtains modified active rice hull ash micro mist for subsequent use;