Bamboo pulp flame-retardant fiber and preparation method thereof
A flame retardant fiber and bamboo pulp technology, applied in the field of bamboo pulp flame retardant fiber and its preparation, can solve the problems of reduced fiber indexes, high gray iron content, poor reaction performance and the like
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Embodiment 1
[0018] The flame retardant of this embodiment is microcapsule red phosphorus, the concentration of the dispersion is 8%, the average particle diameter is 3.2 microns, the addition of dispersant nonylphenol polyoxyethylene ether is 2.1%, and the microcapsule red phosphorus dispersion is dissolved after The process is mixed with viscose, and the addition amount is 11% (p-methyl cellulose).
[0019] 1. Process flow: see attached Figure 1
[0020] 2. Process parameters:
[0021] Spinning glue index: methyl fiber content 7.9%; total alkali content 4.5%; viscosity 38 seconds; maturity 7.8ml (10% ammonium chloride value).
[0022] Acid bath indicators: sulfuric acid content 135.6g / l; zinc sulfate content 21.3g / l; sodium sulfate content 295g / l; bath temperature 48°C.
[0023] The acid activation solution is prepared with sulfuric acid, the pH value is 6.1, the temperature is 35°C, and the treatment time is 25 seconds.
[0024] 3. Fiber quality index:
[0025] Dry breaking strengt...
Embodiment 2
[0029] Present embodiment is to adopt concentration to be that 25% oligomeric phosphate utilizes the pre-spinning injection device to mix viscose, and wherein oligomeric phosphate average particle size is 2.1 micron, and dispersant agent sodium dodecylbenzene yellow acid add-on 0.8%, low The amount of polyphosphate added in the viscose is 24% (p-methyl cellulose).
[0030] 1. Process flow: see attached Figure II
[0031] 2. Process parameters:
[0032] Spinning glue index: methyl fiber content 10.2%; total alkali content 6.3%; viscosity 48 seconds; maturity 11.3ml (10% ammonium chloride value);
[0033] Acid bath indicators: sulfuric acid content 98g / l; zinc sulfate content 8.6g / l; sodium sulfate content 280g / l; bath temperature 63°C.
[0034] The acid activation solution is prepared with acetic acid, the pH value is 2.2, the temperature is 41°C, and the treatment time is 58 seconds.
[0035] 3. Fiber quality index:
[0036] Dry breaking strength: 1.93cN / dtex Wet breakin...
Embodiment 3
[0040] In this embodiment, the concentration of 38% melamine phosphate dispersion is mixed in the yellowing process in viscose fiber production, wherein the average particle diameter of melamine phosphate in the dispersion is 1.4 microns, and the dispersant fatty alcohol polyoxyethylene The addition amount is 3.2%, and the addition amount of melamine phosphate is 33% (p-methyl cellulose).
[0041] 1. Process flow: see attached Figure three
[0042] 2. Process parameters:
[0043] Spinning glue index: methyl fiber content 8.61%; total alkali content 5.52%; viscosity 35 seconds; maturity 10.6 (10% ammonium chloride value);
[0044] Acid bath indicators: sulfuric acid content 123.5g / l; zinc sulfate content 14.6g / l; sodium sulfate content 315g / l; bath temperature 58°C.
[0045] The acid activation solution is prepared with hydrochloric acid, the pH value is 3.7, the temperature is 56°C, and the treatment time is 40 seconds.
[0046] 3. Fiber quality index:
[0047] Dry break...
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