Resin of crystal hadicraft articles

1.orthophthalic type unsaturated polyester resin
2.applicable to the making of colorless,transparent,crystal casting product
Resin of crystal handicraft articles(Unsaturated Polyester Resin)
Technical Indexes of Liquid Resin
Item
Unit
Value
Standard
Appearance

Transparent Sticky Thick Liquid
Visual
Chroma（PT-Co）

15-25

Acid Value
mgKOH/g
18-26
GB2895-82
Viscosity(25°C)
mPa.S
350-600
GB7193.1-87
Gel Time
min
3-5
GB7193.6-87
Non-Volatile
%
62-68
GB7193.3-87
Thermal Stability(80°C)
h
≥24
GB7193.5-87
Note:Gel Time is 25°C; in air bath, 0.5 ml cobalt isocaprylate solution and 0.5 ml MEKP solution were added into 50 g resin.
.
Performance Indexes of Resin Casting Substance
Item
Unit
Value
Standard
Barcol hardness≥
Barcol
41
GB3854-1983
Tensile strength ≥
MPa
60
GB2568-1995
Tensile modulus ≥
MPa
3100
GB2568-1995
Elongation at break≥
%
2.0
GB2568-1995
Flexural strength≥
MPa
100
GB2570-1995
Flexural modulus≥
MPa
3200
GB2570-1995
Impact strength≥
KJ/m2
7.0
GB2571-1995
H.D.T ≥
°C
65
GB1634-1989
Note: Environmental Temperature for Experiment: 23±2°C; relative humidity: 50±5%