3240 Epoxy Sheet

3240 Epoxy Sheet Production Description

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  3240 Epoxy Sheet is a combination of alkali-free glass fiber, epoxy resin and phenolic resin with the process of laminating, heat and pressure. It could be used for insulating structural parts in electrical and other industries. Also, Insulation Board 3240 is a good choice for Electrical Winding Insulation, Winding Wire Coating Insulation, Electrical Base, Shell, Motor, Switch Baseplate.

 

Properties

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  Insulating Material 3240 Epoxy Sheet has high mechanical and electrical strength, excellent rigidity, good dimensional stability, great dielectric property, low water absorption, stable electric insulation performance. All the amazing properties make the material to be one of the most popular materials in various industries.

  It can be machined to various shapes as insulation parts in which the mechanical and electrical properties is required.

Test Jig

Fixture PCB Testing Jig

Insulation Plate

Switch insulation Plate

Polish Gear

Mould in Cloth and Shoes

Insulation Part of Bakelite Sheet

Lithium Battery Pack

 

Technical Data for 3240 Grade A

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NO	TEST ITEMS	UNIT	TEST RESULT	TEST METHOD
1	Bending Strength Perpendicular to Laminations (A)	MPa	484	GB/T 1303.4-2009
2	Bending Strength Perpendicular to Laminations (B)	MPa	338
3	Apparent Bending Elastic Modulus (A)	MPa	2.19*104
4	Apparent Bending Elastic Modulus (B)	MPa	1.99*104
5	Compressive Strength Perpendicular to Laminations compressive	MPa	401
6	Parallel layer shear strength	MPa	31.5
7	Tensile Strength (A)	MPa	368
8	Tensile Strength (B)	MPa	187
9	Parallel Layer Impact Strength (Simply Supported Beam, Gap)	KJ/m²	59.4
10	Vertical Layer Breakdown Voltage (90℃ + 2℃, 25# transformer oil, 20s step by step boost, φ25mm/φ75mm cylinder electrode system)	kV/mm	15.5
11	Parallel Layer Breakdown Voltage (90℃ + 2℃, 25# transformer oil, 20s step by step boost, φ130mm/φ130mm flat plate electrode system)	KV	90.0
12	Relative Permittivity (50Hz)	-	4.90
13	Insulation Resistance after Soaking	Ω	4.1*1013
14	Density	g/cm3	1.96
15	Flammability	Grade	V-0
16	Water Absorption	mg	39.9
REMARK: 1. NO.5 the sample height is (10.32~10.39) mm; 2. NO.10 the sample thickness is (2.09~2.11) mm; 3. NO.11 the sample size is (100.01~100.07) mm*(25.20~25.31) mm*(5.06~5.20) mm thickness, the electrode spacing is (25.20~25.31) mm; 4. NO.15 the sample size is (18.87~12.99) mm*(4.23~4.28) mm; 5. NO.16 the sample size is (50.39~50.51)mm*(50.37~50.50)mm * (4.24~4.27) mm .

 

Technical Data for 3240 GradeB

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NO	TEST ITEMS		UNIT	TEST RESULT	TEST METHOD
1	Density		g/cm3	2.07	GB/T 1303.2-2009
2	Water Absorption		mg	6.0
3	Bending Strength Perpendicular to Laminations	A	MPa	203
		B		192
4	Modulus of Elasticity in Flexure	A	MPa	2.12*104
		B		2.38*104
5	Parallel Layer Impact Strength (Simply Supported Beam, Gap)	A	KJ/m²	47.4
		B		35.8
6	Parallel Layer Shear Strength	A	MPa	49.8
		B		52.7
7	Tensile Strength	A	MPa	147
		B		121 o
8	Compressive Strength Perpendicular to Laminations compressive		MPa	438
9	Insulation Resistance after Soaking		Ω	2.0*109
10	Vertical Layer Breakdown Voltage (90℃ + 2℃ oil, 20s step by step boost)		MV/m	8.6
11	Parallel Layer Breakdown Voltage (90℃ + 2℃ oil, 20s step by step boost)		kV	28.0
12	Flammability		-	V-1
13	Deflection Temperature under Load	A	℃	＞140
		B		＞140
14	Adhesive Strength		N	6324	GB/T 1303.6-2009
REMARK: 1. NO.2 the sample size is 50mm*50mm*50mm; 2. NO.8 the sample height is (9.05~9.56) mm; 3. NO.10 the sample thickness is (2.91~2.95)mm; 4. NO.11 the sample size is 100.00mm*5.08mm*24.10mm;

 

Factory

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  J&Q New Composite Materials Company is a foreign trade company controlled by Hebei JingHong Electronic Technology Co., Ltd., which is responsible for the export business of Hebei JingHong Electronic Technology Co., Ltd. The new factory of Hebei JingHong Electronics Co., Ltd. will be officially put into production in October 2022. Mainly produce FR4 sheet, 3240 epoxy sheet, Bakelite sheet, and 3026 phenolic cotton sheet. The total annual output of the new and old two factory reaches 43,000 tons, which will be the largest insulation board factory in China.

 

Production Process

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Packaging and Shipping

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Regular packing, Protect by Pallet

 

FAQ

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Q: Are you trading company or manufacturer ?

A: We are factory.

Q:What about the package of product?
A:1. Wooden pallet with carton. 2. Plastic pallet with carton. 3. Wooden wooden pallet with wooden case. 4. According to customer requirements.

Q:What's the payment?
A: Payment<=1000USD, 100% in advance

Payment>=1000USD 30%TT advance, 70% TT before shipping

Q:If I need sample,what should I do?
A:It's our pleasure to send sample for you.You can send me your delivery address by email or message.We will send you free sample at first time.

Q:Can you give me a discount price?
A:It is depending on the volume. The larger the volume is; the more discount you can enjoy.

Q:Why is your price a bit higher than other Chinese suppliers?
A:To meet the requirement of different customers and areas, our factory manufactures various kinds of quality for each . . . item at a wide range of price. We can offer the products of different quality levels depending on customer’s target price and quality requirement.

Q:How can you guarantee the quality of mass production is same with the sample sent to me before?
A:Our warehouse staff will leave another same sample in our company, with your company name marked on it, which our production will be based on.

Q:How can you deal with quality issues that customer feedback after receiving the goods?
A:1) Customers take photos of unqualified goods and then our sales staff will send them to Engineering Department to . verify.
2) If the issue is confirmed, our sales staff will explain the root cause and take corrective actions in coming orders.
3) Finally, we will negotiate with our customers to make some compensation.