Polylactic acid flame-retardant material composite, polylactic acid flame-retardant material and preparation method thereof
A flame retardant material, polylactic acid technology, applied in the field of polylactic acid flame retardant material composition and polylactic acid flame retardant material and its preparation, can solve the problem that flame retardant polylactic acid material has not yet appeared, and achieve excellent flame retardant performance, Good flame retardant effect
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[0026] The preparation method of the glass powder can be: melting the mixture at 1000-1400°C for 30-60 minutes, then cooling to 25-35°C at a cooling rate of 5-10°C / min, and then pulverizing to obtain the glass powder. The melting can be carried out in a silicon carbon rod resistance furnace (the carbon-silicon box-type resistance furnace produced by Miqi Technology Co., Ltd.), and the cooling can be carried out in a muffle furnace (SRJX-2-9 produced by Wuhan Yahua Electric Furnace Co., Ltd. model muffle furnace), and the pulverization can be carried out in a pulverizer (the 750 type winnowing powder pulverizer produced by Henan Zhongzhou Heavy Industry Group Machinery Co., Ltd.). Through the above crushing method, the particle size of the crushed glass powder can be controlled within the above range. The melting point of the glass powder prepared above can be measured by the DTA-50 differential thermal analyzer produced by Shimadzu Corporation. The test conditions include: th...
Embodiment 1
[0039] This example is used to illustrate the polylactic acid flame retardant material composition and polylactic acid flame retardant material provided by the present invention.
[0040] 1. Raw material pretreatment
[0041] Put polylactic acid (polylactic acid produced by Natureworks in the United States, brand 3051D, injection molding grade, viscosity average molecular weight of 200,000, melting point of 168°C) in a vacuum drying oven, and dry at 0.05MPa, 90°C for 4h. The obtained polylactic acid has a water content of 0.02 wt%.
[0042] 2. Raw material mixing
[0043] Get 100 parts by weight of the above-mentioned processed polylactic acid, and 6 parts by weight of glass powder (Guizhou State High-tech New Material Company, SP series, melting point is 400-500 ° C, average particle diameter is 5um), join in a high-speed mixer (Zhangjiagang In the SHR-5A high-speed mixer produced by City Hongji Machinery Co., Ltd.), the mixing condition is: mixing at 60°C for 8 minutes.
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Embodiment 2
[0050] This example is used to illustrate the polylactic acid flame retardant material composition and polylactic acid flame retardant material provided by the present invention.
[0051] The preparation method of the polylactic acid flame retardant material is the same as in Example 1, except that the glass powder is obtained by self-made.
[0052] The homemade method of glass powder is: use Na 2 O weight is a basis, with 100 parts by weight of Na 2 O, 20 parts by weight Al 2 o 3 2, 50 parts by weight B 2 o 3 Add it into a high-speed mixer (SHR-5A high-speed mixer produced by Zhangjiagang Hongji Machinery Co., Ltd.), and mix at 55° C. for 6 minutes. Then the above mixture was melted at 1200° C. for 60 min in a silicon-carbon rod resistance furnace (the carbon-silicon box-type resistance furnace produced by Miqi Technology Co., Ltd.), and then melted in a muffle furnace (SRJX-2 produced by Wuhan Yahua Electric Furnace Co., Ltd.) -9 model muffle furnace) is cooled to 30 D...
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