EPDM rubber is petrol-resistant

Word explanation

Useful knowledge - common technical terms

RUBBER VARIETY:

NK or NR - natural rubber

Natural rubber (NK) is a polymer that is created through vulcanization; it is very popular because of its natural dynamic properties, such as elasticity, durability, tensile and abrasion resistance. However, because of its low protein content, it has poor aging and ozone resistance and less good oil and fat resistance. NK can, however, be mixed very well with synthetic rubber and thus improved IR isoprene rubber according to the desired requirements. Temperature resistance: from -40 to + 80 ° C

IR - isoprene rubber

Isoprene rubber (IR) is an artificially produced rubber whose structure is similar to the formally more stringent natural rubber. IR crystallizes a little less, which makes the raw processing a little more difficult. It does not contain any protein and its water resistance is therefore slightly better than that of natural rubber.

Its oil and grease resistance is just as low, tensile and abrasion resistance is slightly lower, but can be mixed with filler material and thus improved.

BR - butadiene rubber

Butadiene rubber (BR) contains neither a polar group nor a methyl group, which weakens the interaction between the macromolecules. BR increases its elasticity, abrasion and tensile strength and temperature resistance (-80 ° C to + 90 ° C). Its dynamic properties can be further improved if BR is processed with natural rubber (NK) and styrene-butadiene rubber (SBR).

SBR - styrene butadiene rubber

Styrene-butadiene rubber (SBR) can exhibit very different properties based on the mixture of butadiene and styrene components. SBR has good abrasion and tensile strength, resistance to acids, bases, alcohols and water, and swells a lot with gasoline, mineral oil and grease. Its temperature range is between -40 ° C and + 70 ° C.

NBR - nitrile butadiene rubber

Nitrile butadiene rubber (NBR) is mixed with different nitrile proportions (from 18 to 50%) and vulcanized. When the nitrile content is increased, the technical properties such as elasticity and compression set are gradually changed in the direction of tear resistance, oil and fuel resistance. NBR is very well suited for industrial seals, hoses, rubber gloves, etc., which are supposed to show increased resistance to abrasion and aging.

CR - chloroprene rubber

Chloroprene rubber (CR), also known as polychloroprene or neoprene, is chemically polar because of its chlorine content, its molecular chains are quite rigid and are similar to nitrile butadiene rubber. It shows just as good resistance to the effects of weather, ozone radiation and embrittlement, to mineral oils, fats and water. Its temperature resistance is between -40 ° C and + 100 ° C. Because of its properties, CR is very well suited for the production of hoses, jackets, profiles, molded parts, insulation and seals for the automotive and construction industries. CR is also used for foam and sponge rubber.


EPDM - ethylene propylene diene rubber, a particularly weather-resistant mixture

Ethylene-propylene diene rubber (EPDM) is similar in structure to butadiene rubber. It is dense and compact and its air permeability is a little higher than that of butadiene rubber. Its dynamic properties such as elasticity, durability, impact elasticity, tensile strength, elongation at break, and compression set resistance are better than those of butadiene rubber. EPDM has a high ozone resistance and good insulation properties; its temperature resistance is between -50 ° C and + 100 ° C. EPDM is easy to mix and therefore its desired properties can be improved, which makes it ideal for producing the best possible materials. Most of our rubber profiles are made from EPDM. Not suitable for gasoline, oils and solvents.

 

SPECIAL PROFILES:

Edge protection profiles: These profiles are diverse and are used for metal, glass, wood and plastic panels and frames. Their main function is to protect panels and frames from damage, but they also protect people from injury. It can be made of the same type of rubber as well as of different types of rubber (coextrusion): as rubber-rubber, rubber-foam rubber, rubber-PVC or even from rubber-metal.

U-profiles: Due to their shape, these rubber profiles / silicone profiles / foam rubber profiles can protect panel edges and movable sub-elements and serve the aesthetic room design by tastefully and appealingly finishing a surface in the room.

Cover and T-profiles: Cover and T-profiles made of EPDM or silicone are ideal for connecting molded parts (of the same or different types) technically and aesthetically, adapting different surfaces or covering gaps, recesses and joints. Rubber profiles made of EPDM and silicone have good weather, ozone and temperature resistance and can therefore also be used outdoors. T-profiles made of silicone can also be used with heatable devices.

Flag profiles or P-profiles: Flag or P-profiles made of EPDM or silicone are particularly suitable for sealing windows, doors, slots, stoves, chimneys, hot and cold ventilation ducts, factory doors and gates.

D-profiles: D-profiles, also called tunnel profiles, are used in sealing technology (ovens, chimneys, boilers, etc.), for slip protection (glass, plastic, metal plates, etc.) and for damping vibrations (between parts, as a base, etc.) .) applied. Sensitive areas often require special resistance to oil, petrol, grease, acid, temperature, etc., which is why D-profiles are made from the materials NBR, FPM, HNBR, ACM. D-profiles are very often installed with double-sided adhesive tape.

L-profiles: These profiles are mainly made of chemically clean silicone or elastic EPDM, they are used to protect edges and surfaces, to maintain distances and for marking.

Half-round profiles: Half-round profiles are used effectively in sealing technology, for slip protection, for vibration damping, etc. Both rubber and silicone are suitable for the production of these profiles, which is why a wide range of materials can be used in production. Half-round profiles are also very often fixed with double-sided adhesive tape.

"H" profile: These rubber profiles are suitable for compensating for surface defects, connecting profiles for edging and protecting two adjacent panels, edges.

Door frame profile: Sealing profiles for doors: These seals are used to prevent the ingress of air and moisture.

Hose or pipe profiles: Hose for various purposes, even with FDA quality for the food industry. We can label the outer skin. We can also cut the hoses to specific lengths.

Roller shutter and finger protection profile: Roller shutters and sliding doors, panels and boards selected for roller shutter and finger protection profiles contain an all-round and matching groove, whereby the special part of the selected roller shutter and finger protection profiles are technically inserted. The design of these profiles effectively ensure the insulation of roller doors and sliding doors and also offer important protection for the hands that are used. When roller shutter and finger protection profiles on upgraded gates and doors, panels and boards are closed or closed, they ensure the desired insulation.

Crown profiles: In the sealing part of a crown profile, three or more continuous ribs or indentations are extruded, which can improve the effectiveness of the insulation with repeated contact with the required surface.

Fastening and sealing profiles: These rubber profiles are used to seal and clamp glass or plastic panels. For windows, glass walls, glass doors, etc. are used.

Angle profiles: This rubber profile / silicone profile is used to protect edges and surfaces, to maintain distances and to mark.

Shock absorber profile: Support profiles made of solid rubber for damping and sealing. Often used on glass carriers, panels, containers, locks, highways, noise barriers, etc.

Glass profiles:These profiles are used during installation to seal windows, glass walls or glass doors.

Protective mask profile: This rubber profile is used for insulation.


Silicone foam:
Silicone foam is a foamy, elastic material that has excellent thermal and acoustic insulation properties, as well as being waterproof, sterilizable and food-safe.

Rubber: Rubber is a particularly elastic material. Compared to most materials, it can be deformed with little effort and regains its original shape when the force is removed. The elastic basis of rubber is rubber, the properties of which largely determine the properties of the rubber articles made from it. There is a large number of industrially produced synthetic rubbers, the main constituent of which is petroleum or natural gas.

 

Features of the rubber:Rubber is elastic, exhibits elastic shape retention, and has higher tensile strength than raw rubber. In terms of its chemical structure, it consists of long molecular chains that are connected to one another by sulfur bridges. When pulling apart, the molecular chains arrange themselves next to each other and do not tear due to the sulfur bridges. When the force is stopped, the molecular chains rearrange themselves in their original structure.

Vulcanization:Rubber can be mixed individually and becomes an elastic material through the industrial process of vulcanization (methodically developed by Charles Goodyear, 1839). The chemical-technological process of vulcanization, in which the molecular chains of natural rubber are cross-linked by adding sulfur under heat and pressure, increases the resistance and durability of the finished product rubber. Vulcanized rubber has elasticity, durability, impact resilience, tensile strength, elongation at break, compression set resistance, hardness, resistance to abrasion, wear, ozone, and temperature, and can also be colored with additives