SH-450 Epoxy Black / Gray cathodic electrophoretic coating is… Hubei Longsheng Sihai New Materials Co., Ltd. Independently developed by the limited company New One Electrophoretic coating. This Product Having The coating film exhibits a smooth, fine, and glossy appearance. The bath solution demonstrates excellent stability, allowing for extended replacement intervals. It also offers strong resistance to cratering and superior resistance to contamination. 。 Excellent corrosion resistance, with strong edge coverage and superior rust‑prevention performance. High penetration power and excellent internal–external uniformity. The coating exhibits a full, rich appearance and outstanding substrate concealment. Good and other characteristics. The product exhibits excellent applicability to a wide range of metallic substrates.

II. Original paint performance Indicator

Project	Technical indicators			Inspection criteria
Project	Emulsion	Black Color paste	Gray paste
Appearance	Milky white liquid	Black A viscous liquid, free of lumps.	Gray, viscous liquid, free of lumps.	Visual estimation
Solid content ( 120℃ ，1h ), %	33 .0±2.0	50 .0±2.0	50 .0±2.0	GB/T6751
Fineness , mu m	----	15	15
pH value ( 25℃ )	6.8±0. 2	4.8±0.2	4.8±0.2	pH meter
Electrical conductivity ( 25℃ ), μs/cm	1000±300	----	----	HG/T3335
Storage stability ( 5-35℃ )	No delamination; no significant differences compared with the state prior to storage.			Visual estimation

Note: When measuring pH and conductivity, follow Resin /Pure water = 1: 1 Dilution

Three , Mixing ratio and method

Ratio: Color paste: Emulsion: Purified water =1:4:5 or 1:5:6

Four , On-site Tank Solution Management Project

Excellent bath‑solution parameters and coating quality stem from rigorous on‑site process‑parameter control and equipment maintenance. Depending on their specific operating conditions, production lines may adopt different management procedures and specifications. The recommended application parameters are listed in the table below for reference.

Category	Project	Control indicator
		New plating solution	Anolyte
Electrophoresis tank	Proportioning	1:4:5/1:5;6	--
	Ripening time ， h	48h	--
	Solid content ( 120℃ ，1h ), %	16±2	--
	pH value	5.6-6.2	2.0-3.5
	Electrical conductivity ， microseconds /cm	15 00± 500	300-80 0
	Yan Jibi	0.25-0.35
	Penetration Power (Four-Box Method) cm, ≥	45
	L effect	The horizontal surface is smooth and even, with no noticeable difference from the vertical surface.
	Solvent content , %	1.2-2.5
	Electrophoresis voltage , V	0-300
	Tank solution temperature , °C	30±2
	Electrophoresis time , s	60–180
Drying oven	Set furnace temperature , °C	180–200
Curing conditions	Drying time ( 170±5℃)	2 0 min (substrate holding time)

Five 、 Product Coating Performance Specifications

Project		Indicator	Inspection criteria
Appearance	Smooth and even, free from defects such as pinholes and sink marks.		Visual estimation
Hardness	H, ≥	H	GB/T6739
Cupping	mm, ≥	6	GB/T9753
Adhesion	level	0	GB/T9286
Flexibility	mm	1	GB/T1731
Impact	Kg.cm	50	GB/T1732
Luster	60⁰	≥50	GB/T9754
Water resistance	( 40℃ ), h, ≥	240	GB/T1733
Acid resistance	( 0.05N H2SO4) ， h, ≥	48	GB/T9274
Alkali resistance	( 0.1N NaOH) , h, ≥	72	GB/T9274
Thermal stability	40℃ × 98%, 240 h	The expansion is not obvious. No delamination occurs during the adhesion test.	GB/T 1740
Gasoline resistance	70# or 90#, 24h	No bubbling, no wrinkling Rust-proof , does not fall off	GB/T 9274-1988
Drying Performance Test	≥20 times	No abnormalities on the coating surface.	GB/T6753.2
* Salt spray resistance	(Thickness greater than 15 um) ,h, ≥	1000	GB/T1771

*Bonder standard phosphated steel sheet, unidirectional corrosion spread ≤ 2 mm 。

Six , storage, packaging, and transportation

Storage: It is recommended to store this product in a well-ventilated area at low temperature ( 5 ℃-3 5 °C) storage, Avoid the sun Light Direct sunlight . Product shelf life Six months; if the product is retested beyond this period and still meets the standards, it may continue to be used.
Packaging: Standard packaging 20L Plastic bucket ， also Packaging can be customized upon request. ；
Transportation: This product is a water-based coating. ， Non-flammable and non-explosive substances ， Store and transport as non-hazardous materials. During transportation, protect from direct sunlight and avoid freezing (＞ 5℃) 。

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SH-460 Integrated Bottom-Coat Cathodic Electrodeposition Coating

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