Flurine® Wide molecular weight distribution Fluoroelastomer

Model: 26404,6504,26704

Item specifics

Features: Wide molecular weight distribution

Uses: Shaft seals, gaskets, O-rings, extruded shapes, mo

Forms: White or light-yellow flake

Review

Description

Description

Flurine® 26404,26504 and 26704 are wide molecular weight distribution Fluoroelastomer, which is comprised of vinylidene fluoride (VF2) and hexafluoropropylene (HFP).

Frequently used in many industries including automotive, fluid power, appliance and chemical industries. It improves the processing performance and has good fluidity.

It is resistant to oils, fuels, aliphatic series, aromatic hydrocarbons, lubricants, and most mineral acids.

Technical Specifications

General
Features	Wide molecular weight distribution
Uses	Shaft seals, gaskets, O-rings, extruded shapes, molded tubing
Forms	White or light-yellow flake
Items	Typical Value				Test Method
Items	26404	26504		26704	Test Method
Physical Properties
Fluorine Content（mass%）	66	66		66
Density（g/cc）	1.81~1.83	1.81~1.83		1.81~1.83	ASTM D297
Mooney Viscosity	40~49	50~59		65~79	ASTM D1646 ML 1+10 at 121°C
Water content	0.1	0.08		0.08	ASTM D 5668
Solubility	Soluble in lower ketones and esters
Vulcanization Properties
T10（s）	<70	<70		<70	ASTM D5289
T90（s）	<140	<140		<140	ASTM D5289
Mechanical Properties
Tensile strength（MPa）	14	14		14	ASTM D412 Method A
100% Modulus	4.8	5		5.2	ASTM D412 Method A
Elongation at Break（%）	170	170		170	ASTM D412 Method A
Tearing Strength（KN/m）	19	19		19	ASTM D624
Hardness, Shore A	74	74		74	ASTM D2240, Type A
Compression Set	18	18		18	ASTM D395, Test B 70 hours at 200℃
Air-oven aging					ISO 188 After Dry Heat Aging;70 hours at 230℃
Tensile strength change rate（%）	-15	-12		-10	ASTM D412 Method A
Elongation at Break change rate（%）	-10	-8		-6	ASTM D412 Method A
Hardness change, Shore A	-2	-2		-1	ASTM D2240, Type A
Thermal Properties
Glass Transition Temp, Tg（℃）	-20	-20		-20	ASTM D1329
Brittleness Temperature（℃）	-30	-30		-30	ASTM D2137
Chemical resistance Properties
Resistance to liquids					3 # standard oil
Volume change rate（%）	2	2		2	ASTM D471 72 hours at 150℃
Mass change rate（%）		1		1	ASTM D471 72 hours at 150℃
Formulation			Curing condition
Polymer 100 MT carbon black，N990 30			Press			Oven
Calcium hydroxide 6 Magnesium oxide 3			Press			Oven
Fluorocure-5# 2.5			6min at 177°C			24h at 230°C

Process Safety Instructions

1）Store and use all fluoroelastomers only in a well-ventilated area.

2）Do not smoke in areas contaminated with dust from fluoroelastomers.

3）Avoid eye contact. After handling fluoroelastomers wash any skin that came in contact with the product with soap and water.

4）Potential hazards, including evolution of toxic vapors, exist during compounding or processing under high temperatures.

5）Before processing the fluoroelastomers, read and consult the MSDS, and follow all label directions and operation cautions..

Packaging And Storage

1）Fluoroelastomers be packed in PVC bags in the shape of rubber film, each bag weight 5KGS, and finally be put into a carton. Each carton contains 5 bags with net weight 25KGS.

2）It must be stored in a clean, cool, and dry place. The storage life is one year from the date of production. It must be re-inspected if over one year and only can use if qualified.

3）It is transported as non-dangerous chemicals. Avoid excessive vibration and far away from pollution, sunshine and water during the transport.