Siloxane

Siloxane - thermoplastic silicone

For the production of thermoplastic products that combine the properties of thermoplastic elastomers and silicones.

• block copolymer of polydimethylsiloxane and polyurethane (more than 90% - siloxane)

• combines in its composition organic and inorganic components - rigid and elastic blocks:

The rigid organic block provides high mechanical strength in a wide temperature range, and the elastic siloxane block provides excellent elastomeric properties, elasticity at low temperatures, gas permeability, high resistance to UV radiation.

Transparent material with a high degree of light transmission (no yellowing), free of fillers, plasticizers and other additives. Possesses high adhesion to various materials (can be used as an adhesive) and high mechanical strength, including when heated. Does not contain volatile substances, stable and shelf stable indefinitely. Can be stained and recyclable.

Application options for Siloxane:

• Modifying additive for plastics processing
  Due to its block structure, Siloxane is compatible with organic polymers. Improves their rheological properties, filling of injection molds, as well as the removal of finished products. Reduces the load on the auger, improving productivity. It is introduced into the polymer in an amount of 0.2-2%.
• Modification of textile fibers
  When Siloxane is applied to textile fibers, a water-repellent breathable layer is formed.
• Use of Siloxane as base material

	Siloxane
	Grade A	Grade B	Grade V	Grade G
Application	Manufacturing of industrial elastomeric products; transparent film.			Manufacturing of industrial elastomeric products (including thin-walled).
	Used as a modifier for plastics processing; as a hydrophobic, breathable textile coating.
Recycling	Proccessed like thermoplastic.			Proccessed like thermoplastic. Especially suitable for processing by injection molding; production of thin-walled, filigree products is allowed.

Physical and mechanical properties

Property	Unit measurements	Siloxane
		Grade A	Grade B	Grade V	Grade G
Melt viscosity, 110°C	Pascal second	25000 - 40000	20000 - 25000	35000 - 45000	10000 - 20000
Melt viscosity, 150°C	Pascal second	10000 - 15000	7000 - 9000	15000 - 20000	50 - 500
Melt flow rate, 190 ° С, 2.16 kgf	g / 10 min		2,5	0,25	25
Остаточная деформация при сжатии (-18°C)	%	14	20	22	10
Permanent set at compression (+23°C)	%	23	75	75	44
Tensile strength	N / mm2 (kg / cm2)	4,0-5,5 (40-55)	4,0-6,0 (40-60)	4,0-6,0 (40-60)	3,0-5,0 (30-50)
Elongation at break	%	>400%	>400%	>400%	>400%
Stress at 100% elongation	N / mm2	1,5-2,0	0,9-1,5	1,2-2,0	1,5-1,7
Shore A hardness	-	40-55	45-55	50-60	50-55
Tear resistance	N / mm2	20-30	20-30	20-30	20-30
Moisture content	%	<0,3%	<0,3%	<0,3%	<0,3%