PBT Material Coating Material
PBT Plastic

T-PBT002 Green Environmental PBT Material Flame Retardant Polybutylene Terephthalate Plastic Coating Material Raw Material

PBT is very important secondary coating materials for Optical Fiber, It has excellent performance in mechanical
/thermal /hydrolytic / chemical resistance properties and easy to be mechanical processed.

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Green Environmental PBT Material is very important secondary coating materials for Optical Fiber. It has excellent performance in mechanical /thermal /hydrolytic / chemical resistance properties and easy to be mechanical processed.

Type and Application：
Type Product name Application blowing Tiny
T-PBT002 PBT resin used for optical fiber Secondary Coating Materials Used for blowing Tiny Optical Fiber

Features

  • Good modulus;
  • Good extension performance;
  • High tensile strength, the lateral pressure;
  • High  performance  of  anti-hydrolysis  make  optical  cable  more  longer  life;
  • PBT Coating material can tolerate most of polarity chemical reagent at room temperature;
  • PBT material is not compatible with filling gel. at high temperatures and susceptible to erosion;

Processing Technology

Processing
Two sets of plastic equipment
Screw Diameter  ¢45~ ¢60        Draw ratio 25:1
Production Speed
200m/min~400m/min
FOR  ¢60 ,Production speed >400m/min
The recommended processing temperature:
Type Extruder Extruder Extruder Extruder Extruder Flange Extruder Extruder Extruder Hot Warm
body 1 body 2 body 3 body 4 body 5 neck head 1 head 2 water water
T-PBT002 245 255 260 265 265 265 265 260 255 50 30
The recommended processing temperature FOR  ¢50 Production speed 200m/min~300m/min
Type Extruder
body 1		 Extruder
body 2		 Extruder
body 3		 Extruder
body 3		 Flange Extruder head 1 Extruder
head 2		 Hot water Warm water
T-PBT002 240 245 250 250 250 245 245 40 30

PBT Material Technology Parameters

Properties
Name PBT Type T-PBT002
All parameters inspected is according to Standard: GB/T20186.1-2006   YD/T1118. 1-2001
No. Inspected parameters Unit Standard Typical Inspection method
requirement
1 Density g /cm 3 1.25~1.35 1.31 GB/T1033-2008
2 Melting Index(250ºC,2160g ) g/10min 7.0~15.0 12.6 GB/T3682-2000
3 Moisture content % ≤0.05 0.03 GB/T20186. 1-2006
4 Saturation % ≤0.5 0.3 GB/T1034-2008
5 Tensile strength at yield MPa ≥50 55. 1 GB/T1040. 1-2006
Elongation at yield % 4.0~10 5.2 GB/T1040. 1-2006
Elongation at break % ≥50 163 GB/T1040. 1-2006
tensile modulus ofelasticity MPa ≥2100 2316 GB/T1040. 1-2006
6 Flexural mode MPa ≥2200 2311 GB/T9341-2000
Bending strength MPa ≥60 76.7 GB/T9341-2000
7 Melting point ºC 210~240 218 DTA
8 Shore hardness / ≥70 75 GB/T2411-2008
9 Izod impact strength 23ºC KJ/m2 ≥5.0 9.4 GB/T1843-2008
Izod impact strength -40ºC KJ/m2 ≥4.0 7.6 GB/T1843-2008
10 Coefficient of linear expansion    (23~ 10-4K- 1 ≤1.5 1.44 GB/T1036- 1989
80ºC)
11 Coefficient of volume Resistance Ω.cm ≥1×1014 4.3×1016 GB/T1410-2006
12 Heat distortion temp 1.8M pa ºC ≥55 58 GB/T1634.2-2004
Heat distortion temp 0.45 M pa ºC ≥170 174 GB/T1634.2-2004
   13 thermal hydrolysis
Tensile strength at yield MPa ≥50 54.8 GB/T1040. 1-2006
Elongation at break 0 ≥10 48 GB/T1040. 1-2006
Compatibility between material and filling compounds
   14 Tensile strength at yield MPa ≥50 54.7 GB/T1040. 1-2006
Elongation at break 0 ≥50 148 GB/T1040. 1-2006
   15 Loose tube anti side pressure N ≥800 983 GB/T228-2002
   16 Appearance GB/T20186. 1-2006    3. 1 Match GB/T20186. 1-2006
Note:
1.The product should be dried and sealed package. It is recommended that it should be use hot air to avoid moisture before using.
The Primary drying temperature should be 100ºC, The temperature in using should be controlled at 120ºC, Drying time should
be more than 2 hours, For the broken bag or after opening which is absorbed moisture, It should be increased drying time .
2.According to the size requirements of Loose Tube, the process parameters should be adjusted controlled by optical fiber’s
surplus length.
3.The above results are obtained based on specific production location and specific time to get sample.

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