Halogen-free Flame Retardant Polyester Chip for Fire-resistant Fiber
Bright Semi-dull or Full-dull Flame-resistant PET Chip for Fire-resistant Yarn
Description: Flame retardant polyester chip is obtained by changing the molecular structure of polyester by linking to phosphorus element. The phosphorous compound exhibits excellent self-extinguishing and flame-retardant properties. It enjoys the characteristic of high strength, hydrolysis resistance, high-temperature resistance, UV-Resistance, and excellent spinnability. We can produce halogen-free flame retardant polyester chips, with phosphorus content from 6500ppm to 15000ppm. And the Limiting Oxygen Index (LOI) can be more than 32 under UL94 if phosphorus content reaches 7000ppm. When phosphorus content reaches 8500ppm, LOI can be more than 35.
Applications:
It is mainly used for the production of fire-resistant fiber. Such fiber is widely applied in the manufacturing of carpets, curtains, and home and car decoration, which has unique requirements for flame retardant properties.
Processing Way:
Considering the different lowing points between the regular and FR PET chips, there are two ways to produce FR fiber.
1. Using FR PET chips 100%.
The phosphorus content of the chips is around 6500 ppm.
The limit Oxygen Index of the FR fiber is around 30.
2. Using FR PET chips and regular PET chips (or bottle-grade PET chips)
The phosphorus content of the chips can be 14000 ppm.
The radio of FR and regular PET chip is based on the Limit Oxygen Index requirement of the final product.
In this way, we need to use Conjugate Spinning technology.
That’s to say, dry the regular and FR PET chips separately.
Compared with Method 2, Method 1 is easier to operate but has a higher production cost.
Parameters Table:
Full-dull Grade
| No. | Items | Unit | Test Result | |
| 1 | Intrinsic Viscosity (IV) | dl/g | 0.678 | |
| 2 | Melting Point (Tm) | ℃ | 242 | |
| 3 | Carboxyl End Groups (-COOH) | mol/t | 10.21 | |
| 4 | Color Value | L | 81.4 | |
| a | -1.19 | |||
| b | 7.08 | |||
| 5 | DEG Content | % | 3.1 | |
| 6 | Phosphorus Content | ppm | 6500 | |
| 7 | TiO2 Content | % | 2.8 | |
| 8 | Moisture Content | % | 0.5 | |
Semi-dull Grade
| No. | Items | Unit | Test Result |
| 1 | Intrinsic Viscosity (IV) | dl/g | 0.7015 |
| 2 | Melting Point (Tm) | ℃ | 242 |
| 3 | Carboxyl End Groups (-COOH) | mol/t | 32 |
| 4 | Color Value / b | 5 | |
| 5 | Moisture Content | w% | 0.2 |
| 6 | Agglomerate Particle | 10 pm/mg | 8 |
| 7 | Ash Content (excluding TiO2) | w% | 0.5 |
| 8 | Fe Content | w% | 0.0002 |
| 9 | Irregular Chip & Powder | w% | 0.3 |
| 10 | DEG Content | w% | 2.9 |
| 11 | TiO2 Content | w% | 0.3 |
| 12 | Phosphorus Content | ppm | 6500 |
Bright Grade
| No. | Items | Unit | Test Result |
| 1 | Intrinsic Viscosity (IV) | dl/g | 0.6912 |
| 2 | Melting Point (Tm) | ℃ | 242 |
| 3 | Carboxyl End Groups (-COOH) | mol/t | 33 |
| 4 | Color Value / b | 6 | |
| 5 | Moisture Content | w% | 0.3 |
| 6 | Agglomerate Particle | 10 pm/mg | 9 |
| 7 | Ash Content (excluding TiO2) | w% | 0.2 |
| 8 | DEG Content | w% | 3.0 |
| 9 | Phosphorus Content | ppm | 7000 |
Note:
1. The central number of the test items can be adjusted according to customer demand.
2. The standard of the test can be changed if we get a new edition about the method of the test.
Packaging:
We offer international standard packaging for better storage, safety, and handling.
*HDPE Plastic Bags – 25 kgs Bag packing
*Jumbo Bags – 1000 kgs Jumbo bags packing
All the above-listed packaging is with moisture-proof liner inside and customized packing is available upon your request.
Storage: Separately stored in a dry, ventilated warehouse equipped with fire-fighting facilities according to different grades and lot numbers.
Safety Precautions:
- Keep away from fire and heat sources for storing and transportation.
- Can not be transported or stored together with oil, acid, alkali chemicals, etc.
- Proper measures should be taken to avoid damage to packing materials and injury.