KR20160065997A - 섬유 강화 수지 적층체 - Google Patents
섬유 강화 수지 적층체 Download PDFInfo
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Abstract
(A)층: 강화 섬유에 수지 또는 수지 조성물을 함침시킨 프리프레그로 이루어지는 적층체이고, 상기의 강화 섬유의 체적 함유율 Vf의 2승과 평균 섬유 길이 Lamm의 곱이 2.0mm보다 크고 15mm 이하이다.
(B)층: 수지 조성물, 및 충전물 함유 수지 조성물로 이루어지는 군으로부터 선택되는 적어도 1종의 조성물로 이루어지는 시트이고, 상기 충전물의 체적 함유율 Vf의 2승과 충전물의 최대 길이의 평균값 Lbmm의 곱이 2.0mm 이하이다.
Description
도 2는 (A)층의 두께의 총계를 (B)층의 두께의 총계로 나눈 값이 3.0 초과인 섬유 강화 수지 적층체의 성형품의 사시도이다.
도 3은 (A)층의 두께의 총계를 (B)층의 두께의 총계로 나눈 값이 0.5 이상 3.0 이하인 섬유 강화 수지 적층체의 성형품의 사시도이다.
도 4는 (A)층의 복소 점성률을 (B)층의 복소 점성률로 나눈 값이 4.0 초과인 섬유 강화 수지 적층체의 성형품의 사시도이다.
도 5는 (A)층의 복소 점성률을 (B)층의 복소 점성률로 나눈 값이 0.85 미만인 섬유 강화 수지 적층체의 성형품의 사시도이다.
도 6은 (A)층의 복소 점성률을 (B)층의 복소 점성률로 나눈 값이 0.85 이상 4.0 이하인 섬유 강화 수지 적층체의 성형품의 사시도이다.
도 7은 본 발명에서 이용하는 프리프레그의 일례를 나타내는 도면이다.
도 8은 실시예 1에서 실시한 성형품의 사진이다.
도 9는 실시예 2에서 실시한 성형품의 사진이다.
도 10은 실시예 3에서 실시한 성형품의 사진이다.
도 11은 실시예 4에서 실시한 성형품의 사진이다.
도 12는 실시예 5에서 실시한 성형품의 사진이다.
도 13은 실시예 6에서 실시한 성형품의 사진이다.
도 14는 비교예 1에서 실시한 성형품의 사진이다.
도 15는 비교예 2에서 실시한 성형품의 사진이다.
도 16은 비교예 3에서 실시한 성형품의 사진이다.
7: 강화 섬유
8: 절입과 강화 섬유가 이루는 각도
9: 절입 길이
10: 절단된 강화 섬유의 길이
Claims (15)
- 하기 (A)층과 하기 (B)층이 적층되어 있고, 상기 (A)층의 두께의 총계를 상기 (B)층의 두께의 총계로 나눈 값이 0.5 이상 3.0 이하인 것을 특징으로 하는 섬유 강화 수지 적층체.
(A)층: 강화 섬유에 수지 a 또는 수지 조성물 a를 함침시킨 프리프레그로 이루어지는 적층체이고, 상기의 강화 섬유의 체적 함유율 Vf의 2승과 평균 섬유 길이 La의 곱이 2.0보다 크고 15 이하이다.
(B)층: 수지 조성물 b, 및 수지 c 및 충전물을 포함하는 충전물 함유 수지 조성물로 이루어지는 군으로부터 선택되는 적어도 1종의 조성물로 이루어지는 시트이고, 상기 충전물의 체적 함유율 Vf의 2승과 충전물의 최대 길이의 평균값 Lb의 곱이 2.0 이하이다. - 제 1 항에 있어서,
하기 식(1)을 만족시키는 것을 특징으로 하는 섬유 강화 수지 적층체.
0.85≤A1/B1≤4.0 ···식(1)
A1: 상기 (A)층을 형성하는 수지 a의 연화점 또는 융점+40℃, 100rad/sec에서의 상기 (A)층의 복소 점성률의 절대값
B1: 상기 (A)층을 형성하는 수지 a의 연화점 또는 융점+40℃, 100rad/sec에서의 상기 (B)층의 복소 점성률의 절대값 - 제 1 항 또는 제 2 항에 있어서,
상기 (A)층의 두께의 총계를 상기 (B)층의 두께의 총계로 나눈 값이 1.0 이상 2.0 이하인 것을 특징으로 하는 섬유 강화 수지 적층체. - 강화 섬유에 수지 a' 또는 수지 a'를 포함하는 수지 조성물 a'를 함침시킨 프리프레그로 이루어지는 적층체인 (A)층과; 수지 b'를 포함하는 수지 조성물 b', 및 수지 c' 및 충전물을 포함하는 충전물 수지 조성물로 이루어지는 군으로부터 선택되는 적어도 1종의 조성물로 이루어지는 시트인 (B)층;이 적층되어 있고, 하기 식(1)을 만족시키는 것을 특징으로 하는 섬유 강화 수지 적층체.
0.85≤A1/B1≤4.0 ···식(1)
A1: 상기 (A)층을 형성하는 수지 a'의 연화점 또는 융점+40℃, 100rad/sec에서의 상기 (A)층의 복소 점성률의 절대값
B1: 상기 (A)층을 형성하는 수지 a'의 연화점 또는 융점+40℃, 100rad/sec에서의 상기 (B)층의 복소 점성률의 절대값 - 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
상기 (A)층 및/또는 상기 (B)층의 구성 수지가 열가소성 수지인 것을 특징으로 하는 섬유 강화 수지 적층체. - 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,
상기 (A)층을 형성하는 상기 프리프레그가, 상기 강화 섬유의 길이 방향을 가로지르는 방향으로 상기 강화 섬유를 절단하는 깊이의 절입을 갖는 것을 특징으로 하는 섬유 강화 수지 적층체. - 제 6 항에 있어서,
상기 (A)층을 형성하는 상기 프리프레그의 상기 절입이 직선상이고, 상기 절입과 상기 강화 섬유의 길이 방향이 이루는 각도가 30° 이상 60° 이하이며, 상기 프리프레그 1m2당 상기 절입의 길이의 총계가 20m 이상 150m 이하인 것을 특징으로 하는 섬유 강화 수지 적층체. - 제 1 항 내지 제 7 항 중 어느 한 항에 있어서,
상기 (A)층의 상기 강화 섬유의 평균 섬유 길이가 10mm 이상 50mm 이하인 것을 특징으로 하는 섬유 강화 수지 적층체. - 제 1 항 내지 제 8 항 중 어느 한 항에 있어서,
상기 (A)층과 다른 하나의 (A)층 사이에 상기 (B)층이 적층되어 있는 섬유 강화 수지 적층체. - 제 1 항 내지 제 9 항 중 어느 한 항에 있어서,
상기 (A)층 및 상기 (B)층을, 상기 (A)층을 형성하는 수지 및 상기 (B)층을 형성하는 상기 수지 조성물의 연화점 또는 융점 이상으로 가열하는 것에 의해 융착시켜 얻어지는 섬유 강화 수지 적층체. - 제 1 항 내지 제 10 항 중 어느 한 항에 있어서,
상기 (A)층의 상기 강화 섬유의 체적 함유율이 20% 이상 60% 이하인 것을 특징으로 하는 섬유 강화 수지 적층체. - 제 1 항 내지 제 11 항 중 어느 한 항에 있어서,
상기 (A)층의 상기 강화 섬유가 탄소 섬유인 것을 특징으로 하는 섬유 강화 수지 적층체. - 제 1 항 내지 제 12 항 중 어느 한 항에 있어서,
상기 (B)층의 상기 충전물이 리사이클재인 것을 특징으로 하는 섬유 강화 수지 적층체. - 제 1 항 내지 제 13 항 중 어느 한 항에 있어서,
상기 (A)층의 상기 강화 섬유의 평균 단섬유 섬도가 0.5dtex 이상 2.4dtex 이하인 탄소 섬유인 섬유 강화 수지 적층체. - 제 1 항 내지 제 14 항 중 어느 한 항에 있어서,
상기 (A)층의 상기 강화 섬유에 이용되는 섬유속의 필라멘트수가 3,000본 이상 100,000본 이하인 섬유 강화 수지 적층체.
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