Podcast
Questions and Answers
Buna S is a copolymer of ______ and styrene
Buna S is a copolymer of ______ and styrene
butadiene
GR-S is the abbreviation of Government Rubber ______
GR-S is the abbreviation of Government Rubber ______
Styrene
Buna S can be vulcanized with ______ and cured to a hardness equal to hard rubber
Buna S can be vulcanized with ______ and cured to a hardness equal to hard rubber
sulfur
Buna S must be compounded with a black pigment such as ______ to bring out its best physical properties
Buna S must be compounded with a black pigment such as ______ to bring out its best physical properties
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Buna S is the synthetic rubber normally used for tires and tubes as a substitute for ______
Buna S is the synthetic rubber normally used for tires and tubes as a substitute for ______
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Buna N is a copolymer of butadiene and ______
Buna N is a copolymer of butadiene and ______
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Buna N can be vulcanized with ______ and can be cured to hard rubber
Buna N can be vulcanized with ______ and can be cured to hard rubber
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Buna N has excellent resistance to ______
Buna N has excellent resistance to ______
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Buna N will resist heat up to ______
Buna N will resist heat up to ______
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Buna N is sometimes referred to as ______ rubbers
Buna N is sometimes referred to as ______ rubbers
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Study Notes
Synthetic Rubber Properties
- Buna N stiffens at -45°F, has good abrasion resistance, and good "breakaway" properties when used in contact with metal.
- It is adversely affected by ozone and sunlight, but its properties are improved by the addition of carbon black.
Buna N Applications
- Buna N is used for oil and gasoline hose, tank linings, hydraulic accumulator bags, gaskets, and seals.
Neoprene Properties
- Neoprene is a polymer of chloroprene, has good resistance to oil, and excellent resistance to heat, air, light, and flame.
- It has better light resistance than any other rubber.
- It can be vulcanized without sulfur but cannot be cured to as hard a condition as hard rubber.
Neoprene Applications
- Neoprene is used for oil-resistant hose, carburetor diaphragms, gaskets, shoe soles, barrage balloons, truck tires, cements, tape, and caulking.
Butyl Properties
- Butyl is a copolymer of isobutylene and small amounts of unsaturated hydrocarbons, has excellent gas impermeability, and can be vulcanized with sulfur.
- It cannot be hardened to the condition of hard rubber.
Butyl Applications
- Butyl is used for gas masks, plywood molding bags, life jackets, and chemical storage, and may become the first-choice material for tire tubes.
Thiokol Properties
- Thiokol is a polysulfide polymer, has the highest resistance to deterioration, and is particularly noted for its resistance to aromatic hydrocarbons and aromatic blended gasolines.
- It can be vulcanized with zinc oxide but not to a hardness comparable with hard rubber.
Thiokol Applications
- Thiokol is used for oil hose, tank linings for aromatic aviation gasolines, paint spray hose, gaskets, and seals.
Buna S Properties
- Buna S is a copolymer of butadiene and styrene, can be vulcanized with sulfur and cured to a hardness equal to hard rubber.
- It must be compounded with a black pigment such as carbon black to bring out its best physical properties.
Buna S Applications
- Buna S is the synthetic rubber normally used for tires and tubes as a substitute for natural rubber, and can be used to replace rubber in most applications.
Aircraft Plastics
- Plastics are a large group of synthetic and natural organic materials which can be molded under heat and pressure, cast, extruded, or fabricated into a variety of shapes.
- Plastics have been used in many aircraft applications, such as knobs, handles, paneling, and similar items.
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Description
Learn about the properties and applications of Buna N and Neoprene synthetic rubbers, including their resistance to extreme temperatures, abrasion, and contact with metal. Discover how these materials are used in hydraulic systems, tank linings, gaskets, and more.
