Products
GL3018 with excellent performance used for Optical Fiber
Type and application
| Type | Product | Application and advantages |
| GL3018 | PBT resin | Secondary Coating Materials Used for Optical Fiber |
Product description
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.
| Properties | Advantages | Description |
| Mechanical properties | High stability | Small shrinkage scale, small volume changingin using, good stability in forming. |
| High mechanical strength | Good modulus, good extension performance,high tensile strength, the lateral pressure of loosetube is higher than requirement of standard . | |
| Thermal properties | High distortion temperature | Whether in the case of high load or low load ,the performance of distortion is excellent |
| Hydrolytic properties | Anti-hydrolysis | High performance of anti-hydrolysis make opticalcable more longer life than requirement of standard. |
| Chemical properties | Chemical resistance | PBT can tolerate most of polarity chemical reagent atroom temperature. And PBT is not compatible withfilling gel. at high temperatures and susceptible to erosion. |
Processing technology The recommended processing temperature：
| Zone | Extruder body 1 | Extruder body 2 | Extruder body 3 | Extruder body 4 | Extruder body 5 | Flange | Extruder neck | Extruder head 1 | Extruder head 2 | Hot water | Warm water |
| /℃ | 250 | 255 | 260 | 265 | 265 | 265 | 265 | 255 | 255 | 35 | 30 |
Package: Two package ways, : 1. It is packed 900/1000KG per bag with the inner lining of aluminum foil material, outer lining of PE woven material. 2. It is packed 25KG per bag with inner lining of aluminum foil material , outer lining of kraft paper material.
Storage and transport
Transportation: It should not be exposed to get wet or humidity during transportation, and keep it dry, clean, complete and pollution-free. Storage: It is stored in a clean, cool, dry and ventilated warehouse away from the source of fire. If the product is found to be damped in rainy reason or with high moisture in the air, It can be used one hour later after it is dried at the temperature of 120℃ .
GL3018 properties
| No. | Inspected properties | Unit | Standardrequirement | Typical | Inspection method |
| 1 | Density | g/cm3 | 1.25 ～1.35 | 1.31 | GB/T1033-2008 |
| 2 | Melting Index（250℃、2160g） | g/10min | 7.0 ～ 15.0 | 12.5 | GB/T3682-2000 |
| 3 | Moisture content | % | ≤0.05 | 0.03 | GB/T20186.1-2006 |
| 4 | Water Absorption | % | ≤0.5 | 0.3 | GB/T1034-2008 |
| 5 | Tensile strength at yield | MPa | ≥50 | 52.5 | GB/T1040.2-2006 |
| Elongation at yield | % | 4.0 ～ 10 | 4.4 | GB/T1040.2-2006 | |
| Elongation at break | % | ≥100 | 326.5 | GB/T1040.2-2006 | |
| tensile modulus of elasticity | MPa | ≥2100 | 2241 | GB/T1040.2-2006 | |
| 6 | Flexural modulous | MPa | ≥2200 | 2243 | GB/T9341-2000 |
| Bending strength | MPa | ≥60 | 76.1 | GB/T9341-2000 | |
| 7 | Melting point | ℃ | 210 ～ 240 | 216 | DTA |
| 8 | Shore hardness | - | ≥70 | 73 | GB/T2411-2008 |
| 9 | Izod impact 23℃ | KJ/m2 | ≥5.0 | 9.7 | GB/T1843-2008 |
| Izod impact -40℃ | KJ/m2 | ≥4.0 | 7.7 | GB/T1843-2008 | |
| 10 | Coefficient of linear expansion（23 ～ 80℃） | 10-4K-1 | ≤1.5 | 1.40 | GB/T1036-1989 |
| 11 | Coefficient of volume resistance | Ω.cm | ≥1×1014 | 3.1×1016 | GB/T1410-2006 |
| 12 | Heat distortion temp 1.8M pa | ℃ | ≥55 | 58 | GB/T1634.2-2004 |
| Heat distortion temp 0.45 M pa | ℃ | ≥170 | 178 | GB/T1634.2-2004 | |
| 13 | thermal hydrolysis | ||||
| Tensile strength at yield | MPa | ≥50 | 51 | GB/T1040.1-2006 | |
| Elongation at break | % | ≥10 | 100 | GB/T1040.1-2006 | |
| 14 | Compatibility between material and filling compounds | ||||
| Tensile strength at yield | MPa | ≥50 | 51.8 | GB/T1040.1-2006 | |
| Elongation at break | % | ≥100 | 139.4 | GB/T1040.1-2006 | |
| 15 | Loose tube anti side pressure | N | ≥800 | 825 | GB/T228-2002 |
| 16 | Appearance | GB/T20186.1-2006 3.1 | According to | GB/T20186.1-2006 | |
Note: 1.The product should be dried and sealed package. It is recommended to use hot air to avoid moisture before using. temperature controlled within （80~90）℃;
Company Profile
Qingdao Sinorwel New Material Technology Co., Ltd. is a high-tech enterprise specializing in the research, development, promotion and application of new materials in different industrial fields. Committed to providing green, environmentally friendly, clean and efficient industrial basic raw materials for enterprise users in different industrial fields around the world; Continuously to help global industrial enterprise customers save energy, reduce consumption, reduce emissions, and enhance efficiency.
The company firmly adheres to the core needs of global industrial enterprise customers and leverages its rich technological and experiential advantages to make equity investments in six major industrial fields. Selected OEM factories strictly produce according to formulas and technical standards, continuously and stably providing higher cost-effective products and service to global industrial enterprise customers.
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