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采用一种两端含有双-NH2基的黑色染料,将带有偶氮的有机黑色染料接枝到聚酰亚胺的链段上,采用一步合成法制成含偶氮发色团的黑色共聚聚酰亚胺;通过改变温度、原材料配比来合成高黏度黑色聚酰亚胺树脂。
Using a black dye containing bis-NH2 groups at both ends, an azo organic black dye is grafted to the polyimide segment, and a one-step synthesis method is used to form a black-containing azo chromophore copolymer Imide; by changing the temperature, the ratio of raw materials to synthesize high viscosity black polyimide resin.