Microencapsulated red phosphorus flame-retardant polypropylene fiber and preparation method thereof
A technology of microencapsulated red phosphorus and flame-retardant polypropylene fiber, which is applied in the field of flame-retardant fibers, can solve the problems such as no reports of microencapsulated red phosphorus flame-retardant polypropylene fibers, etc., and achieve less addition, good thermal stability, and good compatibility Effect
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Embodiment 1
[0029] 1. Raw material composition
[0030] A kind of microcapsule red phosphorus flame-retardant polypropylene fiber, its raw material mass percentage is,
[0031] Microencapsulated Red Phosphorus 1%
[0032] Polypropylene chips 99%
[0033] The microcapsule red phosphorus model is Doher-6100; appearance: reddish particles, P content: %≥40 volatile matter≤1%, decomposition temperature: ≥400°C, capsule core density at 25°C: 0.69g / cm 3 , Moisture absorption: ≤0.5%;
[0034] 2. Preparation method
[0035] A preparation method of microencapsulated red phosphorus flame-retardant polypropylene fiber, the specific steps are:
[0036] (1) microcapsule red phosphorus and polypropylene fiber slices are mixed evenly, and are spun according to the chemical fiber spinning process;
[0037] (2) Heat the spinneret at a temperature of 260°C to 300°C. After spinning, the cooling air temperature is 28°C to 32°C, the wind speed is 1 m / s to 2 m / s, and the drafting speed is 1200 m / min to 140...
Embodiment 2
[0041] 1. Raw material composition
[0042] A kind of microcapsule red phosphorus flame-retardant polypropylene fiber, its raw material mass percentage is,
[0043] Microencapsulated Red Phosphorus 5%
[0044] Polypropylene chips 95%
[0045] The microcapsule red phosphorus model is Doher-6100; appearance: reddish particles, P content: %≥40 volatile matter≤1%, decomposition temperature: ≥400°C, capsule core density at 25°C: 0.69g / cm 3 , Moisture absorption: ≤0.5%;
[0046] 2. Preparation method
[0047] A method for preparing microencapsulated red phosphorus flame-retardant polypropylene fibers is the same as in Example 1, wherein the spinneret is trilobal in shape.
[0048] The denier of the final microcapsule red phosphorus flame-retardant polypropylene fiber is 0.5 denier.
Embodiment 3
[0050] 1. Raw material composition
[0051]A kind of microcapsule red phosphorus flame-retardant polypropylene fiber, its raw material mass percentage is,
[0052] Microencapsulated Red Phosphorus 8%
[0053] Polypropylene chips 92%
[0054] The microcapsule red phosphorus model is Doher-6100; appearance: reddish particles, P content: %≥40 volatile matter≤1%, decomposition temperature: ≥400°C, capsule core density at 25°C: 0.69g / cm 3 , Moisture absorption: ≤0.5%;
[0055] 2. Preparation method
[0056] A method for preparing microencapsulated red phosphorus flame-retardant polypropylene fibers is the same as in Example 1, wherein the spinneret is cross-shaped.
[0057] The denier of the final microcapsule red phosphorus flame-retardant polypropylene fiber is 1.5 denier.
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