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Novel polyethylene powder coating

A polyethylene powder, polyethylene technology, applied in powder coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor metal adhesion, poor compatibility of inorganic fillers, and unsatisfactory mechanical properties of coating films.

Inactive Publication Date: 2012-05-16
QINGDAO SANLI ZHONGDEMEI WATER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary polyethylene powder has unsatisfactory mechanical properties of the coating film, poor adhesion to metals, and poor compatibility with inorganic fillers, so it needs to be modified

Method used

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  • Novel polyethylene powder coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Composition of raw material parts by weight:

[0011] Linear Low Density Polyethylene 100 parts

[0012] Carbon nanofiber 5 parts

[0013] Epoxy resin (E-10) 10 parts

[0014] 3 parts of silane coupling agent

[0015] Micron inorganic filler 10 parts

[0016] 3 parts of powder additives

[0017] Put 10kg of linear low density polyethylene, 0.3kg of silane coupling agent and 1kg of micron-sized inorganic filler into a high-speed mixer, and after uniform mixing, add 1kg of epoxy resin, 0.5kg of carbon nanofiber mixed powder and 0.3kg of powder additives Mix together well. Put the mixed material into a twin-screw extruder to extrude and granulate, and the temperature of the extruder is 160-180°C. Put the prepared masterbatch granules in a pulverizer and grind them to the required particle size of the powder.

[0018] The obtained powder was sprayed on a standard board (No. 1 board) at 250°C to test its performance.

Embodiment 2

[0020] Composition of raw material parts by weight:

[0021] Linear Low Density Polyethylene 100 parts

[0022] Carbon nanofiber 10 parts

[0023] Epoxy resin (E-10) 15 parts

[0024] 3 parts of silane coupling agent

[0025] Micron inorganic filler 10 parts

[0026] 3 parts of powder additives

[0027] According to the above processing procedures, the plate (No. 2 plate) is tested for performance.

Embodiment 3

[0029] Composition of raw material parts by weight:

[0030] Linear Low Density Polyethylene 100 parts

[0031] Carbon nanofiber 5 parts

[0032] Epoxy resin (E-10) 15 parts

[0033] 3 parts of silane coupling agent

[0034] Micron inorganic filler 10 parts

[0035] 3 parts of powder additives

[0036] Make board (No. 3 board) according to the above processing procedure to test its performance.

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Abstract

The invention relates to a novel polyethylene powder coating, and especially relates to the preparation of the polyethylene powder coating compositely modified by carbon nanofibers and epoxy resin. The polyethylene powder coating of the invention comprises 100 parts of linear low density polyethylene (PE), 5-10 parts of carbon nanofibers, 10-15 parts of epoxy resin, 5-20 parts of micron-grade inorganic fillers, 1-3 parts of silane coupling agents, and 1-5 parts of powder additives. The preparation employs a parallel-exhausting twin-screw extruder, a high-speed mixer, and a high-speed pulverizer. The obtained product has high mechanical strength, good impact resistance, and excellent adhesion to metal substrates.

Description

1. Technical field [0001] The invention relates to a novel polyethylene powder coating, in particular to the preparation of a composite modified polyethylene powder coating with carbon nanofibers and epoxy resin. 2. Background technology [0002] Polyethylene powder coating is a thermoplastic powder coating made of polyethylene (PE) as the main raw material, adding various additives, mixing, pulverizing and grinding. The polyethylene powder coating film has excellent water resistance, acid and alkali resistance, chemical resistance, water absorption below 0.001%, good low temperature resistance, and no cracking at -40°C for more than 400 hours. Polyethylene powder coating endows the coating film with excellent leveling, soft texture and waxy feeling, and has been widely used in chemical equipment, chemical pipelines, chemical storage tanks, plates, wires, mechanical parts, light industrial appliances and food industries, etc. aspect. However, ordinary polyethylene powder h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D123/08C09D163/00C09D7/12C09D5/03
Inventor 张明亮王学成耿仁兵
Owner QINGDAO SANLI ZHONGDEMEI WATER EQUIP
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