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●Introduction
Unlike conventional phenolic resin, the new type of phenolic
resin can cure at ambient temperature and atmosphere pressure.
It is as easy to process as polyester and suitable for all processes
used in glass fiber reinforced plastic industry. The product
made with the new type of phenolic resin shows superior fire
resistance, very low smoke generation and minimal toxic emission
as well as good anti-corrosion property and it can be used under
high temperature. It is widely used to make ventilation ducts
for trains, anti-flammation cable tray, vessels, pipes and inner
liners used under high temperature with anti-corrosion request.
●Physical properties and application
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Type
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NR9420
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NR9430
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NR9440
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NR9450
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SP-95
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Appearance
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Brownish viscous liquid
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Viscositycps(25℃)
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500-750
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400-750
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500-700
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3500-50000
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15000-20000
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Density
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1.200
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1.200
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1.200
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1.200
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PH Value
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6.5-7.5
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6.5-7.5
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6.5-7.5
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6.5-7.5
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6.5-7.5
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Solid content% ≥
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70
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70
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70
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80
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Gel timemin. ≥
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20
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20
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-
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-
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20
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Curing speedsec. ≤
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-
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-
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160
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140
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-
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Property
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High temperatureAnti-corrosion
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High temperatureAnti-flammation
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High temperatureAnti-flammation
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Anti-corrosionAnti-flammation
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Anti-flammation
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Process
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Filament winding
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Hand lay-up
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SMC
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Pultrusion
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Surface decoration
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●Properties
of final product
Compared with conventional FRP, the products made with NR9400 series
new type of phenolic resin
demonstrate the following advantages:
●Excellent fire resistance (oxygen index>80)
●Low smoke generation (Dm<10)
●Minimal toxic fume emission, less danger to life
●Higher service temperature up to 180℃(HDT>200℃)
which offers a wide range of application field of glass fiber
reinforced plastic
●Good corrosion resistance
●Typical properties of new type phenolic fiber reinforced plastic
(laminates 50% glass after 4 hours postcure at 60℃) |
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Item
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Test standard
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Value
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Flexural
strength MPa
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GB1449-83
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> 180
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Flexural
module Mpa
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GB1449-83
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> 6×103
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Tensile
strength MPa
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GB1447-83
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150
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Tensile
module Mpa
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GB1447-83
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> 6×103
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HDT ℃
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GB1634-94
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> 200
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Density
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GB1463-88
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> 1.47
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Oxygen index %
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GB8924-88
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> 80
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Optical density %
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GB10671-89
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＜7.9
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●Corrosion
resistant properties of new type phenolic fiber reinforced plastics
(Dipped in the chemicals for one
year under ambient temperature): |
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Chemicals
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Result
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Conclusion
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Appearance
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Strength retention %
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36%acetic acid
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No change on the surface
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132
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OK
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acetic acid
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92
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20%chloride acid
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96
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30%sulpher
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89
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80%sulfur acid
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96
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85%phosphoric acid
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97
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85%formic acid
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82
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15%silicofluoride acid
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85
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benzene
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100
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carbon tetrachloride
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99
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saturated sodium chloride solution
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91
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ethyl acetate
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75
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dichloroethane
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95
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trichloroethane
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93
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acetone
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Exposed
glass fiber found on the surface
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Fail
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10%sodium hydroxide
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10%nitric acid
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5%hydrofluoric acid
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