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특허 상세정보

Acid resistant glass fibers

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B32B-009/00    C03C-013/00    D02G-003/00   
미국특허분류(USC) 428/392 ; 106/50 ; 106/52 ; 428/375
출원번호 US-0692160 (1976-06-02)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 29  인용 특허 : 0
초록

Acid resistant glass fibers are prepared by treating the surface of a siliceous glass fiber with an aqueous acid solution to increase the silica content thereof. The aqueous acid solution is removed from the surface of the glass fibers and the fibers are heated to dehydrate or partially dehydrate the surface. The glass fibers as produced have a dual composition; the outer surface of the fiber is rich in silica in relation to the core of the fiber. The fibers so formed are highly resistant to acid attack.

대표
청구항

A glass fiber having a dual composition, one composition comprising the core of the fiber, the second composition comprising the surface of the fiber and in which the surface composition has a high concentration of SiO2 therein, the dual composition being formed by acid treating a glass fiber having a composition comprising by weight 52 to 58 SiO2, 12 to 20 percent Al2O3, 12 to 25 percent CaO, 0 to 8 percent MgO, 0 to 13 percent B2O3, 0 to 3 percent Na2O +K2O and 0 to 1 percent F2, said acid treatment being conducted at a pH, temperature and time suffici...

이 특허를 인용한 특허 피인용횟수: 29

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