Agriculture Reference
In-Depth Information
G
lossary
A
Accelerator
- chemical substance (catalyst) that increases the rate of chemical
reaction.
Acoustic applications
- some composites are made to absorb sound.
Acoustic composites
-
composites designed to dampen vibrations or sound.
Additive
- a substance added to a foam mixture to enhance or achieve a property.
Adjustable speeds
- ability of pumps and mixers of machines to work at different
speeds.
After
-
cure
-
period of time for further cure after all chemical reactions have ceased.
Ageing
- accelerated tests to determine changes in properties over time.
Agitators
- mechanisms that mix chemical components in tanks before mixing
together.
Airflow -
a measure of the ease with which air passes through a foam sample.
Aliphatic
- division of organic compounds containing carbon with open-chain
structures.
Ambient
- normal temperature of a room or environment.
Amine catalyst
- compound used to accelerate a blowing reaction.
Antioxidants
- materials added to foam to resist oxidation and improve properties.
Antistatic agents
- chemicals added to prevent accumulation of electrostatic
charges.
Aromatic
- organic compounds containing a benzene ring.
Auxiliary blowing agent
- additive used in the production of foams that
supplements the primary blowing agent to make foam softer or lighter.
B
Ball rebound
- an American Society for Testing and Materials (ASTM) test used to
measure the surface resilience of a foamed product.
Batch mixer
- machine with a dispensing head in which all chemicals are mixed.
Batch mixing
- process in which all measured chemicals are mixed in one
container.
Batch tank
- large containers in which two or three chemicals are mixed
separately.
Blanket heater
- provides heat at desired levels for tanks containing chemicals.
Blowing agent
- a chemical compound that provides gas for foam expansion.
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