Epoxy resin coating reinforced by polyethylene glycol terephthalate crystal and preparation method thereof

A technology of polyethylene terephthalate and epoxy resin coatings, applied in the direction of epoxy resin coatings, anti-corrosion coatings, coatings, etc. Problems such as high film cohesion, to achieve the effect of reducing cracks, excellent barrier properties, and good performance parameters

Pending Publication Date: 2022-04-12
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a body-shaped polycondensation polymer material, epoxy resin is prone to further increase in curing degree and aging phenomenon during use, and will form a high-density cross-linked network after curing. This network

Method used

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  • Epoxy resin coating reinforced by polyethylene glycol terephthalate crystal and preparation method thereof
  • Epoxy resin coating reinforced by polyethylene glycol terephthalate crystal and preparation method thereof
  • Epoxy resin coating reinforced by polyethylene glycol terephthalate crystal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1:

[0013] The epoxy resin coating which does not add polyethylene terephthalate crystallization is obtained as the following feed ratio (mass percentage content):

[0014]

[0015] The epoxy resin was placed in an oven, 20 min at 60 ° C, and after the viscosity drops, the appropriate amount of epoxy resin is dissolved with hexafluoropropyl alcohol, and it is manually stirred at normal temperature until the system is uniform, colorless and transparent. state. An epoxy resin curing agent, a leveling agent, a defoamer is added to the blended system, and after the glass rod is fully stirred, the seal is allowed to stand for 10 min, and the blend is applied to the tip iron sheet and placed at 100 ° C oven baking. Take out after 2 hours. The impedance of the polyethylene terephthalate epoxide epoxy resin coating is about 4 × 10 3 Ω.

Example Embodiment

[0016] Example 2:

[0017] The polyethylene terephthalate crystal enhanced epoxy resin coating is prepared as follows (mass percentage content):

[0018]

[0019]

[0020] The melt quenched polyethylene terephthalate is added to the hexafluoropropyl alkanol solvent, and the sealing is allowed to completely dissolve, then the epoxy resin is placed in an oven, 60 ° C heat-insulation treatment for 20 min, viscosity drop Thereafter, the polyethylene terephthalate / hexafluoropropanol system is added to the appropriate amount of epoxy resin, respectively. The polyethylene terephthalate / hexafluoro isopropanol / epoxy resin is manually stirred for 5 min until the system is uniform, colorless and transparent. The epoxy resin curing agent, a leveling agent, and an antifoaming agent are added thereto among the blended system. After the glass rod is sufficiently stirred, the seal is allowed to stand for 10 min, and the blend is applied to the tip iron piece and placed at 100 ° C oven b...

Example Embodiment

[0021] Example 3:

[0022] The polyethylene terephthalate crystal enhanced epoxy resin coating is prepared as follows (mass percentage content):

[0023]

[0024] The melt quenched polyethylene terephthalate is added to the hexafluoropropyl alkanol solvent, and the sealing is allowed to completely dissolve, then the epoxy resin is placed in an oven, 60 ° C heat-insulation treatment for 20 min, viscosity drop Thereafter, the polyethylene terephthalate / hexafluoropropanol system is added to the appropriate amount of epoxy resin, respectively. The polyethylene terephthalate / hexafluoro isopropanol / epoxy resin is manually stirred for 5 min until the system is uniform, colorless and transparent. The epoxy resin curing agent, a leveling agent, and an antifoaming agent are added thereto among the blended system. After the glass rod is sufficiently stirred, the seal is allowed to stand for 10 min, and the blend is applied to the tip iron piece and placed at 100 ° C oven baking. Afte...

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Abstract

The invention discloses a polyethylene glycol terephthalate crystal reinforced epoxy resin coating and a preparation method thereof, and the coating comprises the following raw materials by mass: 36.5-39.5% of epoxy resin; 0.5%-5% of polyethylene glycol terephthalate; 40% of hexafluoroisopropanol; 18.3% to 19.8% of a curing agent; 0.1% of a leveling agent; and 0.1% of a defoaming agent. The coating is prepared according to the steps of dissolving, compounding, stirring, blending curing, baking and the like, the mechanical property and the corrosion resistance of the cured epoxy resin are improved through the crystallization behavior of polyethylene glycol terephthalate in the coating, and the optimal compounding proportion is obtained.

Description

technical field [0001] The invention relates to a polymer material and a preparation method, in particular to a polyethylene terephthalate crystal-reinforced epoxy resin coating and a preparation method. Background technique [0002] Paint coating is currently the most economical and effective means to deal with metal corrosion. The most common and efficient anti-corrosion coating is mainly thermosetting resin material. Epoxy resin is a kind of thermosetting resin. During its curing process, there are extremely active polar groups such as epoxy group and hydroxyl group, which endow it with a high degree of adhesion, so its cured product has high strength and Adhesive properties, and widely used in coatings and adhesives. However, as a body-shaped polycondensation polymer material, epoxy resin is prone to further increase in curing degree and aging phenomenon during use, and will form a high-density cross-linked network after curing. This network structure makes the cohesion...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D5/08C09D7/65C09D7/20
Inventor 李照磊周立犇陈立庄郭伟杰周海骏
Owner JIANGSU UNIV OF SCI & TECH
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