SH-460 Black, bottom and base integrated / Gray cathodic electrophoretic coating is… Hubei Longsheng Sihai New Materials Co., Ltd. Independently developed by the limited company New One Electrophoretic coating. It combines both aging resistance and salt-spray resistance. It is widely used in… Application scenarios for the bottom‑face‑unification requirement.

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 ), %	30 .0±2.0	45 .0±2.0	55 .0±2.0	GB/T6751
Fineness , mu m	----	15	15
pH value ( 25℃ )	6.0 ±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

III. Tank solution Parameter

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, ≥	55
	Solvent content , %	1.2-2.5
	Liquid level difference , centimeter	10-15
	MEQ value	30±5
	Electrophoresis voltage , V	0-300
	Breakdown voltage , V	≥350
	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)

Four 、 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
Weather resistance ( UVA-340 Type)	Light retention rate ≥ 85% , △ E ≤ 3.0	500	GB/T23987-2009
* Salt spray resistance	(Thickness greater than 15 um) ,h, ≥	500	GB/T1771

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

Five , 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 After 6 months, if the product is retested beyond the expiration date 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-450 Cathodic Two-Component Electrophoretic Coating

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SH-450 Cathodic Two-Component Electrophoretic Coating

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