TH47251A - Aromatic polyamide fiber paper, the methods of manufacturing that material, and laminates made from that material. - Google Patents

Abstract

DC60 (19/07/43) type of fiber paper under the condition that Completely made of aromatic polyamide fiber formed by liquid crystal spinning method, fiber paper can be used as substrate material for circuit board, And it can show a high confidence in being Electrical insulation under High humidity, excellent dimensional stability after heating, and high heat resistance. Completely made of aromatic polyamide fiber formed by liquid crystal spinning method, fiber paper can be used as substrate material for circuit board, And it can show a high confidence in being Electrical insulation under High humidity, excellent dimensional stability after heating, and high heat resistance.

Claims (9)

1. Complete aromatic polyamide fiber paper exhibits the following characteristics: It consists of 60-97% (by weight) of aromatic polyamide fiber and 3-40% (by weight) of binder; the amount of ionic compounds in the aforementioned fiber paper is less than 0.5% (by weight); the crystallinity of the fiber paper is 45% or higher; and the apparent crystallinity (ACS: Apparent Crystallinity (110 plane)) is 50A or larger. 2. The aromatic polyamide fiber paper of claim 1 is characterized by the fact that the aromatic polyamide fiber is polyparaphenylene terephthalamide. 3. The fiber paper of claim 1 is characterized by the fact that the length of the complete aromatic polyamide fiber is 2.14 mm. 4. The aromatic polyamide fiber paper of claim 1 is characterized by the fact that the paper density is 0.45-0.85 g/cm³. 5. The aromatic polyamide fiber paper of claim 1 is characterized by the fact that the dimensional change in the paper is 0.03% or less after heating the paper to 300°C for 10 minutes. 6. The aromatic polyamide fiber paper of claim 1 is characterized by the fact that the coefficient of thermal expansion in the thickness direction of the paper is 50-400 ppm/°C. 7. The aromatic polyamide fiber paper of claim 1 is characterized by the fact that the electrical conductivity of the paper extract is 10 (mu)s/cm or lower. 8. Aromatic polyamide fiber paper, a complete representation of Claim 1, is characterized by the fact that its tensile strength is 1.5 kg/cm² or higher. 9. The laminate consists of at least one layer of fiber paper of Patent 1 saturated with a thermosetting resin, where the coefficient of thermal expansion of the laminate is 200 ppm/°C or less.