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High-strength anti-shedding nylon powder paint

A technology of nylon powder coating and nylon powder, which is applied in the direction of powder coating, polyamide coating, epoxy resin coating, etc. It can solve the problems of high hazard, unfavorable wide application, complex composition, etc., and achieve the effect of increasing the bonding force

Inactive Publication Date: 2016-12-07
SHANGHAI COBIL CHEM COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating has good anti-corrosion performance, no pollution, and is not easy to fall off during use. However, the coating needs to add harmful aniline during the preparation process, and the composition is complex. It is not conducive to wide application

Method used

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  • High-strength anti-shedding nylon powder paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] S1, take 100 kg long carbon chain engineering nylon PA11, 0.5 kg bisphenol A epoxy resin, 0.2 kg polymerizable hindered phenol antioxidant and phosphite antioxidant compound, 0.1 kg 2,4-dihydroxydiphenyl Methanone, 0.5 kg leveling agent and 0.5 kg nucleating agent are placed in the reactor, mixed evenly through high-speed stirring, extruded and pelletized through a twin-screw extruder to obtain modified nylon resin particles;

[0029] S2, feed liquid nitrogen, freeze the modified nylon resin particles in S1 to -100°C, and keep for 30 minutes

[0030] Zhong, the frozen modified nylon resin particles are ground into nylon powder by a cryogenic mill;

[0031] S3, pack and seal the nylon powder ground in S2 with a PE film liner bag, and wait for the nylon powder to

[0032] When returning from the frozen state to room temperature, the nylon powder is dried by a crawler microwave dryer, and the moisture content of the dried nylon powder is ≤0.1%;

[0033] S4, sieve the nyl...

Embodiment 2

[0035] S1, take 100 kg long carbon chain engineering nylon PA12, 1 kg bisphenol A epoxy resin, 1 kg polymerizable hindered phenol antioxidant and amine antioxidant compound, 0.5 kg 2-(2-hydroxy-3-tertene Butyl-5-methylphenyl)-5-chlorobenzotriazole, 1 kg leveling agent and 1 kg nucleating agent were placed in the reactor, mixed evenly through high-speed stirring, extruded and cut by twin-screw extruder pellets to obtain modified nylon resin pellets;

[0036] S2, feed liquid nitrogen, freeze the modified nylon resin particles in S1 to -125°C, and keep for 45 minutes

[0037] Zhong, the frozen modified nylon resin particles are ground into nylon powder by a cryogenic mill;

[0038] S3, pack and seal the nylon powder ground in S2 with a PE film liner bag, and wait for the nylon powder to

[0039] When returning from the frozen state to room temperature, the nylon powder is dried by a crawler microwave dryer, and the moisture content of the dried nylon powder is ≤0.1%;

[0040] ...

Embodiment 3

[0042] S1, take 100 kg long carbon chain engineering nylon PA1012, 0.7 kg bisphenol A epoxy resin, 0.6 kg polymerizable hindered phenol antioxidant and phosphite antioxidant compound, 0.3 kg 2-(2-hydroxy-3 - tert-butyl-5-methylphenyl)-5-chlorobenzotriazole, 0.75 kg leveling agent and 0.8 kg nucleating agent in the reactor, mixed evenly through high-speed stirring, extruded by twin-screw extruder Pelletizing to obtain modified nylon resin particles;

[0043] S2, feed liquid nitrogen, freeze the modified nylon resin particles in S1 to -150°C, and keep for 60 minutes

[0044] Zhong, the frozen modified nylon resin particles are ground into nylon powder by a cryogenic mill;

[0045] S3, pack and seal the nylon powder ground in S2 with a PE film liner bag, and wait for the nylon powder to

[0046]When returning from the frozen state to room temperature, the nylon powder is dried by a crawler microwave dryer, and the moisture content of the dried nylon powder is ≤0.1%;

[0047] S...

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Abstract

The invention discloses a high-strength anti-shedding nylon powder paint and a preparation method thereof. The nylon powder paint is composed of a nylon resin, an epoxy resin, a high-temperature-resistant antioxidant, an ultraviolet stabilizer, a leveling agent and a nucleator. The preparation method comprises the following steps: stirring the nylon resin, epoxy resin, high-temperature-resistant antioxidant, ultraviolet stabilizer, leveling agent and nucleator at high speed, extruding and cutting, refrigerating, drying and screening to obtain the high-strength anti-shedding nylon powder paint. The high-strength anti-shedding nylon powder paint has the advantages of favorable adhesive force with the metal layer and very high binding firmness, can not have the problem of nylon coating shedding after long-time outdoor use, and can well protect the inner layer metal.

Description

technical field [0001] The invention relates to the technical field of nylon composite powder coatings, more specifically, the invention relates to a high-strength anti-shedding nylon powder coating applied to outdoor iron coatings. Background technique [0002] Outdoor iron parts are particularly prone to rust due to long-term exposure to the air. The current treatment methods [0003] One is to brush a layer of anti-rust paint on the surface of the iron parts. The anti-rust paint can protect to a certain extent, but the anti-rust paint will slowly oxidize and fall off after a period of time under outdoor conditions, so that the inner iron parts are gradually exposed. Rust; In addition, the anti-rust paint itself is solvent-based, which will cause environmental pollution. Another solution is to apply a layer of epoxy powder coating or PE powder coating on the surface of iron parts. Both epoxy powder and PE powder are powder coatings, and there is no problem in terms of en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D177/02C09D177/06C09D163/00C09D5/03C09D7/12
CPCC09D177/02C08L2201/08C08L2205/03C09D5/033C09D177/06C08L63/00C08K5/132C08K5/524C08K5/3475C08K5/17
Inventor 吴杰
Owner SHANGHAI COBIL CHEM COMPANY