High-wearability polyethylene powder coating containing nano-diamond grafted activated expanded perlite and preparation method of powder

A technology of expanded perlite and nano-diamond, applied in powder coatings, anti-corrosion coatings, coatings, etc., can solve problems such as poor adhesion of coating films, easy cracks on the surface, poor mechanical strength, etc., and achieve environmental corrosion resistance and modification Good reinforcement effect and improved mechanical strength

CN104610815AInactive Publication Date: 2015-05-13WUHU BAOYI AMUSEMENT EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-05-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a polyethylene powder coating, and specifically relates to a high-wearability polyethylene powder coating containing nano-diamond grafted activated expanded perlite and a preparation method of powder. The powder coating is prepared from the following raw materials in parts by weight: 0.01 to 0.02 part of nano-diamond powder, 5 to 7 parts of expanded perlite, 1 to 2 parts of polyving akohol, 12 to 15 parts of styrene-acrylonitrile copolymer, 4 to 5 parts of regular tributyl acetocitrate, 0.3 to 0.5 part of potassium permanganate, 1 to 2 parts of an organosilicon leveling agent, 2 to 3 parts of a silane coupling agent KH-550, 1 to 3 parts of an antioxidant, 5 to 8 parts of pigment, and 40 to 50 parts of polyethylene. According to the preparation method, the expanded perlite is activated, and the nano-diamond powder is grafted on the surface of the expanded perlite, so that the compatibility of materials can be improved, the padding modifying and reinforcing effects are improved, and the utilization rate of the raw materials is increased; the prepared polyethylene powder coating is high in mobility and adhesiveness during use; the coating layer is high in mechanical strength, wear resistance and environmental corrosion resistance, durable, and outstanding in protection effect.
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Description

technical field

[0001] The invention relates to a polyethylene powder coating, in particular to a high wear-resistant polyethylene powder coating containing nano-diamond grafted activated expanded perlite and a preparation method thereof. Background technique

[0002] Polyethylene powder coatings occupy a large proportion in the existing thermoplastic powder coatings. Its advantages are mainly manifested in cheap raw materials, chemical corrosion resistance, good electrical insulation and low temperature stability. However, its disadvantages are also obvious. Use When the mechanical strength is poor, the adhesion of the coating film is poor, the surface is easy to crack, and the anti-corrosion and weather resistance also need to be improved. Performance is imperative.

[0003] At present, the ways to improve the performance of polyethylene are mainly divided into two methods: physical modification and chemical modification. Although these modification methods are currently ...

Examples

Embodiment

[0011] The coating of this embodiment is made of the following raw materials by weight: nano-diamond powder 0.01, expanded perlite 6, polyvinyl alcohol 1.5, styrene-acrylonitrile copolymer 14, acetyl tri-n-butyl citrate 5, high Potassium manganate 0.4, silicone leveling agent 1.5, silane coupling agent KH-550 2.5, antioxidant 2, pigment 7, polyethylene 45.

[0012] The preparation method of this powder coating is:

[0013] (1) First calcinate the expanded perlite in a nitrogen atmosphere at 700-800°C for 2.3 hours, then cool it to room temperature and pulverize it into a 600-mesh fine powder to obtain pre-activated expanded perlite powder, and then put the pre-activated expanded perlite powder into Soak in an acidic aqueous solution with a concentration of 44.8g / L and a pH value of 5.5 prepared by potassium permanganate for 52 minutes, then filter, wash the filtrate with water for 4 times, and add 0.6 parts by weight of silane coupling agent KH-550 , nano-diamond, heated to 7...