Fluoroplastic foam sheet

MF-Fluorosheet is a fluoroplastic foam sheet (fluoroplastic sponge) with heat resistance, non-adhesiveness, low dielectric constant and low dielectric loss tangent.
This product has an even lower dielectric constant than PTFE, which has an extremely low dielectric constant among plastics, and is expected to play an active role in high-frequency communication applications. We have a lineup of three types according to hardness to meet customers' applications.

Table of Contents

• Features of MF-Fluorosheet (general properties, thermal properties)
• Physical Properties
• Low dielectric constant and dissipation factor
• Surface condition observation
• Effects of chemicals
• Effects during heating
• Thermal conductivity
• Applications
• Product Size/Processing Method
• Environmental Survey Response
• Samples/Inquiries

1.MF-Fluorosheet Features

• 100% fluoropolymer impurity-free foam
  Heat resistant, chemical resistant, non-adhesive, water repellent, chemical adsorption, breathable, low dielectric constant, etc.
• Thickness, length, and shape can be adjusted according to the application, such as tubular or sheet form, and can be crushed by tightening and compressing
  Insulation cover, filtration sheet (oil-water separation membrane), gasket (when tightened)
• Due to the different structure from stretched sheets, there is less expansion and contraction due to heat, which reduces problems during installation and use when used as gaskets, etc.

Entry	PTFE	MF-60P	MF-70P	MF-75P	Test conditions
Hardness	80	72	52	39	Durometer A Peak value
	95	83	68	50	Asker C
Density[g/cm3]	2.15	0.86	0.62	0.51
Tensile strength[MPa]	Unmeasured	2.42	1.20	0.67	JIS K 6251
Growth[％]	Unmeasured	81	71	59	JIS K 6251
Porosity[％]	0	60	71	76	(Fluoropolymer density - fluoropolymer foam density)/PTFE density x 100
Amount of wear[mg]	Unmeasured	142	261	1245	JIS K 7204
					Load = 250g, Wear wheel = H-22, Number of revolutions = 1000, Rotational speed = 60rpm
Breathability[sec/100ml]	Unmeasured	3.8	1.3	0.6	JIS P 8117 (Garre densometer)
Dielectric constant	Unmeasured	1.37	1.27	1.22	IPC TM-650 2.5.5.13 (Cavity resonator method) Frequency: 20GHz
Dielectric tangent	Unmeasured	0.00021	0.00017	0.00016

		PTFE	MF-Fluorosheet [MF-75P]
Physical properties	Specific gravity	2.15	0.49
	Thickness[mm]	1.28	0.62
	Specific heat capacity[J/g/K]	1.125	1.822
	Thermal diffusivity[mm2/s]	0.108	0.061
	Thermal conductivity[W/mK]	0.261	0.054

Equipment used: Xe flash analyzer (NETZSCH)
Measuring conditions: Laser flash method at a set temperature of 25°C

2. Physical properties

Table.1 Contact angle to water

Elapsed time[ms]	C.A[°]
	PTFE	MF-75P
1000	76.7	103.8
3000	76.5	104.9
5000	76.7	103.8
7000	76.7	103.8
9000	76.5	103.8

Machine used : Contact angle meter DM-501 (Kyowa Chemical)

Figure.1 Contact angle to water (MF-75P)

Table.2 Contact Angle to Ethanol

Elapsed time[ms]	C.A[°]
	PTFE	MF-75P
1000	42.6	62.5
1500	42.3	49.3
3000	41	3.4

Figure.2 Contact angle to ethanol (MF-75P)

3. Low dielectric constant and low dielectric loss tangent

Entry	Unit	Conditions	MF-60PS	MF-70PS	MF-75PS
Dielectric constant	-	Frequency 20GHz	1.37	1.27	1.22
Dielectric tangent	tanδ	Frequency 20GHz	0.00021	0.00017	0.00016

For more information, click here to download the PDF.

4. Surface condition observation

5. Effects of chemicals

1. Drop acid, alkali, or oil and observe the change in appearance

Chemicals used

• 0.1 mol/L Hydrochloric acid
• 0.1 mol/L sodium hydroxide solution
• Silicon oil

Immediately after dropping

1 hour later

No change in any of the above
⇒ No deterioration due to acid or alkali was observed.

2. Immersion in acid, alkali, and oil to investigate dimensional changes

Chemicals used

• 0.1 mol/L Hydrochloric acid
• 0.1 mol/L sodium hydroxide solution
• Silicon oil

Conditions

Room temperature 25°C, 72hour

No dimensional change in any of the samples
No deterioration was observed

6. Effect on heating

Instrument used: GCMS-QP2010 (Shimadzu Corporation)
Measuring conditions : Thermal desorption method (DESP), 200°C

	PTFE	MF-75P
Detected substance	None	None

When heated at 200°C, none of the gases, etc. generated were observed.

7. Applications

It is expected to play an active role in the field of semiconductors, where outgassing is minimal and a siloxane-free environment is preferred.

Insulation covers, filtration sheets (oil-water separation membranes), gaskets (when tightened), etc.

8. product size/processing method

Size: We will cut to your desired size within the range of MAX size (20 mm thick) and provide it to you.
Product shape: Sheets, tubes and cylindrical shapes are also available. Ordering quantity: We accept orders from 1 sheet/1 piece.

9. Environmental Survey Compliance

We can submit documents related to various environmental surveys such as RoHS, ChemSHERPA, SDS, etc.

10.Sample/Inquiries

We would be happy to provide you with products tailored to your application.

Please feel free to contact us through [Contact Us] on our website regarding inquiries about our products.