Polyurethane
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MU40

Details
1. product features
◎ excellent heat resistance
◎ soft, good toughness
◎ can be adjusted according to the ratio of the bending elasticity
2. Main purpose
◎ Hand vacuum injection do
Four Connaught Catalog / a glance    
   Publishing date :2014.01.08
classification similarABS  similarABS  similarPP  similarPP  Transparent Transparent Heat Rubber-like
series MU-50 MU-52 MU-70S MU-79 MU62 MU-66 MU-40 MU-89-1
feature The most commonly used & nbsp; (Main Product) & nbsp; & nbsp; & nbsp; & nbsp; good impact resistance Good heat resistance, & nbsp; compatibility is good, do not bite more often stripping film Soft & nbsp; a small elastic modulus Can be used for a long time, & nbsp; suitable for large parts Colorless and transparent (Hard yellowing) as a colorless transparent acrylic approximation Excellent heat resistance Rubber-like hardness adjustable
project condition unit
product name A solution ﹣ MU-50A MU-52A MU-70A-2S MU-79A MU-62A MU-66A MU-40A MU-89-1A
Viscosity(25℃) B-type viscometer mPa∙s 750 850 1000 870.00  700.00  2000 200 470 
Specific gravity (25 ℃) 量杯法 g/cm3  1.12 1.11 1.07 1.10  1.05  1.03 1.01 1.00 
product name Solution B ﹣ MU-50B MU-52B MU-70B MU-79B MU62-B MU-66B MU-40B MU-89-1B
Viscosity(25℃) B Type viscometer mPa∙s 180 240 220 270.00  140.00  150 230 170 
proportion(25℃) Cup method g/cm3  1.19 1.19 1.16 1.18  1.20  1.08 1.16 1.16 
Ratio weightA/B % 100/200 100/200 100/140 100/200 100/150 100/200 100/400 100/100
volumeA/B % 100/190 100/190 100/130 100/187 100/130 100/190 100/350 100/86
You can use the time 25℃﹑100Gg Minute∙second 5 minutes 5 minutes 45 seconds 5 minutes 45 seconds 9 minutes 6 minutes 10 minutes 4 minutes 45 seconds 5 minutes
Standard curing conditions Liquid temperature ℃ 30-40℃ 25-40℃ 30-40℃ 25-30℃ 30-40℃ 30-40℃ 25-30℃ 25-30℃
Mold temperature ℃ 60-70℃ 60-70℃ 60-70℃ 60-70℃ 60-70℃ 60-70℃ 70℃ 60℃
Curing temperature ℃ 60~70℃x45 minutes 60~70℃x60 minutes 60~70℃x60 minutes 60~70℃x60~90 minutes 60~70℃x60-90 minutes 60~70℃x60-90 minutes 70℃xx60 minutes 60℃x70 minutes
Curing conditions Curing temperature ℃ ∙minute 70℃xx 45 Fenzhong 70℃x 45 Fenzhong 60℃x60 minutes 60℃x60 minutes 60℃x60 minutes 60℃x60 minutes 70℃x60 minutes 60 ℃ x 70 Fenzhong
Cured color Visually ﹣ white﹑milky﹑black white﹑milky﹑black white﹑black white﹑black Colorless and transparent Colorless and transparent Hazel White black
The proportion of cured JIS K 7112
   25℃		 g/cm3  1.22 – 1.18 1.20  1.21  1.13 1.21 1.12 
hardness JIS  K 7215 shoreD 82 83 72 74  75  85 80 90 
Tensile Strength JIS  K 7113 Mpa 64 69 32 48  64  66 47 17 
Tensile modulus Mpa 2140 2000 1100 ﹣ 2250  2100 1224 –
Elongation % 17 10 55 44  17  6 43 270 
Bending strength JIS  K 7171 Mpa 93 101 43 63  108  96 60 –
Flexural modulus Mpa 2200 2200 1000 1500  2460  2000 1233 –
Impact strength JIS K 7110 lzod
  V Notch		 KJ/m2 16 12 16 14  11  8 14 –
Heat distortion temperature JIS K 7191 Aggravation1.80Mpa ℃ 93 99.3 60 78  77  85 104 –
JIS K 7191 Aggravation0.45Mpa ℃ 101 105.5 79 ﹣ 84 ﹣ 138 –
Linear expansion coefficient TMA Method /℃ 8.8x10ˉ5 8.7x10ˉ5 1.3x
10ˉ4		 1.7x
10ˉ4		 9.3x
10ˉ5		 9.3x
10ˉ5		 12.1x
10ˉ5		 –
Shrinkage t=4 % 0.3 0.38 0.4 0.5  0.4  0.38 0.5 –
Remarks UL-94HB       cheap price     By hardness range adjustable MU-89-1C;ShoreA90~20