Glass cloth, prepreg and printed circuit board

• Main Authors: SUGIMURA MASAHARU, KAKIZAKI HIROTAKA, TACHIBANA, SHINICHIRO
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PRINTED CIRCUITS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention relates to a glass cloth, a prepreg and a printed circuit board. The purpose of the present invention is to provide a glass cloth having a low dielectric constant and excellent insulation reliability. A glass cloth obtained by weaving a glass filament comprising a plurality of glass filaments, the glass filaments having a B2O3 composition amount of 15 to 30% by mass, a SiO2 composition amount of 45 to 60% by mass, and a P2O5 composition amount of 2 to 8% by mass, and the glass cloth having a weight loss on ignition of 0.90 to 2.0% by mass. 本发明涉及玻璃布、预浸料以及印刷电路板。本发明的目的在于提供介电常数低、绝缘可靠性优异的玻璃布。一种玻璃布，其为对由多根玻璃单丝形成的玻璃丝进行织造而成的玻璃布，前述玻璃单丝中，B2O3组成量为15质量％～30质量％，SiO2组成量为45质量％～60质量％，P2O5组成量为2质量％～8质量％，前述玻璃布的灼烧失重值为0.90质量％～2.0质量％。