Flame-retardant polyester composition and foaming beads and plate thereof
A technology of flame-retardant polyester and composition, which is applied in the fields of flame-retardant polyester composition and its foamed beads and foamed sheets, and can solve the problems of cell shape and expansion ratio control of polyester foamed materials , Poor flame retardant and antistatic properties of polyester foam beads and sheets, which affect molding applications, etc.
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Embodiment 1
[0126] (1) Preparation of flame retardant
[0127] Add 7 parts by weight of triphenylphosphine oxide and 3 parts by weight of cobalt nitrate into ethanol, stir at a rate of 100rpm, and then use microwave to heat the mixture under stirring. The heating power is 50w, the temperature is 40°C, and the reaction time is 4h. The material after microwave heating reaction is carried out supercritical drying, obtains the complex Co(OPPh of the formation of triphenylphosphine oxide and cobalt nitrate 3 ) 2 (NO 3 ) 2 .
[0128] The above-prepared complex Co(OPPh 3 ) 2 (NO 3 ) 2 Mechanically stir and homogenize with magnesium hydroxide at a stirring speed of 10 rpm to obtain a flame retardant.
[0129] (2) Preparation of carbon nanofiber antistatic agent
[0130] Coal tar pitch with a carbon content of more than 80 mol% is used as a carbon source, and the mixed acid of phosphoric acid / nitric acid / hydrochloric acid (volume ratio 1:1:1) is used for grinding pretreatment to obtain a...
Embodiment 2
[0147] (1) The preparation method of the flame retardant and (2) the preparation method of the carbon nanofiber antistatic agent are the same as in Example 1, except that the raw material formula and reaction conditions shown in Table 1 and Table 2 are the same. For example, the flame retardant formed in this embodiment is the complex Ni(OPOt) formed by trioctylphosphine oxide and nickel nitrate 3 ) 2 (NO 3 ) 2 .
[0148] (3) Preparation of polyester base resin PET102
[0149] The polyester is PET (FD520).
[0150] Take by weighing 100 parts by weight of the above-mentioned polyester, then add a lubricant (taking the weight of the above-mentioned polyester as 100 parts by weight, the amount of lubricant added is 0.1 part by weight), and then the mixture is added to a high-speed stirrer and mixed uniformly, and then The mixed material is fed into the feeder of the twin-screw extruder manufactured by Nanjing Coperion Co., Ltd., and the material enters the twin-screw through...
Embodiment 3
[0162] (1) The preparation method of the flame retardant and (2) the preparation method of the carbon nanofiber antistatic agent are the same as in Example 1, except that the raw material formula and reaction conditions shown in Table 1 and Table 2 are the same. For example, the flame retardant formed in this embodiment is the complex Co(OPOt) formed by trioctylphosphine oxide and cobalt nitrate 3 ) 2 (NO 3 ) 2 .
[0163] (3) Preparation of polyester base resin PET103
[0164] PET / PA alloy, PET is FG730, PA is L1250Y, and the weight ratio is 4:6.
[0165] Weigh 100 parts by weight of the above-mentioned PET / PA alloy, then add a lubricant (based on the weight of the above-mentioned PET / PA alloy as 100 parts by weight, the amount of lubricant added is 0.1 parts by weight), and then the mixture is added to a high-speed stirrer and mixed Evenly, then add the mixed material to the feeder of the twin-screw extruder manufactured by Nanjing Coperion Co., Ltd., the material enters...
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