Heat-resistant resin composition and automobile spoiler using same
一种耐热性树脂、组合物的技术，应用在车身、机动车、车身稳定等方向，能够解决工艺窗口窄、很难制造扰流板等问题
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Embodiment 1 to Embodiment 4 and comparative example 1 to comparative example 4
[0092] The components summarized in Table 1 below, 0.5 parts by weight of N'N-ethylenebisstearamide (trade name: EBA, manufacturer: SONGWON) as a lubricant, and 0.2 parts by weight of polyethylene wax (commodity Name: LC102N, manufacturer: LionChemicals), 0.2 parts by weight of octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (trade name: Songnox 1076) as an antioxidant , Manufacturer: SONGWON) and 0.2 parts by weight of 2,4-di-tert-butylphenol dihydrogen phosphite (trade name: PEP-24, manufacturer: ADEKA) were mixed to prepare a heat-resistant resin combination. The heat-resistant resin composition was kneaded in a twin-screw extruder at 260°C, thereby preparing a pelletized heat-resistant resin composition.
[0093] [Table 1]
[0094]
[0095] (1) The first copolymer
[0096] Trade name: DP280, manufacturer: LG Chemical, butadiene copolymer: 60% by weight, average particle size of butadiene copolymer: 0.3 μm
[0097] (2) The second copolymer
[0098] ①High molecular weigh...
experiment example 1
[0109] Each of the granular heat-resistant resin compositions of Example 1 to Example 4 and Comparative Example 1 to Comparative Example 4 was injection molded to manufacture samples. The performance of the sample was measured according to the following method. The results are summarized in Table 2.
[0110] (6) Izod impact strength (kg·cm / cm): According to ASTM D 256, a sample with a thickness of 3.2 mm is cut to measure the Izod impact strength.
[0111] (7) Melt flow index (g / 10min): Measured under the conditions of 220°C and 10 kg according to ASTM D 1238.
[0112] (8) Heat distortion temperature (°C): Measured according to ASTM D 648 using a sample with a thickness of 6.4 mm.
[0113] [Table 2]
[0114]
[0115] With reference to Table 2, it can be confirmed that in the case of the samples of Example 1 to Example 4 and Comparative Example 1 to Comparative Example 4, the heat distortion temperature increases as the content of the heat-resistant SAN copolymer increases.
[0116] Com...
Embodiment 5 to Embodiment 8 and comparative example 5 to comparative example 8
[0122] Set the temperature of the extruder cylinder of the blow molding machine (trade name: YELBT, manufacturer: YOUNGIL) to 195°C, set the internal temperature of the accumulator to 200°C, and set the die head at the end of the accumulator The temperature is set to 225℃, and the hydraulic pressure of the storage cylinder used to prepare the parison is set to 185kg / cm 2 .
[0123] First, the respective granular heat-resistant resin compositions summarized in Table 3 below were melted. The molten heat-resistant resin composition is added to the accumulator of the blow molding machine. Hydraulic pressure is applied to the heat-resistant resin composition melted in the accumulator, thereby preparing a parison. Here, the surface temperature of the parison discharged from the mold of the accumulator is 215°C, and its weight is approximately 5,400 g. The parison is blow molded in a mold to produce a molded product. The molded product is processed to make the spoiler. The average w...
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