Fire retardant, fire retardant resin composition, and insulated electrical wire
A technology of resin composition and insulated wire, applied in the field of flame retardant resin composition, insulated wire, and flame retardant, can solve the problem of generating a large amount of corrosive gas, and achieve excellent productivity, good dispersibility, and excellent cold resistance. Effect
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Embodiment 1
[0045] [Preparation of flame retardant]
[0046] The flame retardant (referred to as surface-treated magnesium hydroxide in Tables 1 and 2) was prepared as follows. While stirring magnesium hydroxide [manufacturer: NIHON KAISUI CO.LTD., industrial magnesium hydroxide (average particle size 10μm)] in a high-speed mixer at 200°C, use about A polypropylene having a weight average molecular weight of 1000 as a surface treatment agent [manufacturer: CLARIANT (JAPAN) KK, trade name: 6102] was gradually put into the mixer for 5 minutes. Then, the mixture was stirred for another 20 minutes. The content of the surface treatment agent in the flame retardant is 0.1% by mass.
[0047] In this embodiment, all weight average molecular weights are weight average molecular weights measured by GPC in terms of polystyrene. The measurement conditions of GPC are explained below.
[0048] Column: [Manufacturer: TOSOH CORPORATION, trade name: TSK-gel]
[0049] Measuring temperature: 100℃
[0050] Solven...
Embodiment 2 to 7
[0057] Examples 2 to 7 (Table 1), Comparative Examples 1 to 7 (Table 2)
[0058] Except for setting the kind and content of the surface treatment agent contained in the flame retardant as described below, the flame retardant and the flame retardant resin composition were prepared in the same manner as in Example 1, thereby obtaining an insulated wire. The discharge amount of the produced flame-retardant resin composition was measured. Conduct cold resistance tests on insulated wires. The test results are shown in Tables 1 and 2.
Embodiment 2
[0060] ·Polypropylene [Manufacturer: Mitsui Chemicals Co., Ltd. (MITSUI CHEMICALS, INC.), trade name: NP055]
[0061] ·Weight average molecular weight: 5000
[0062] ·Content: 10% by mass
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Abstract
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