KR20200042934A - 섬유 강화 열가소성 수지의 혼련 방법, 가소화 장치 및 압출기 - Google Patents
섬유 강화 열가소성 수지의 혼련 방법, 가소화 장치 및 압출기 Download PDFInfo
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Abstract
Description
도 2(a) 및 2(b)는 2축 스크류 압출기에서 강화 섬유와 열가소성 수지가 혼련된 상태를 나타내고, 도 2(a)는 2축 스크류 압출기의 상류측의 단면도이고, 도 2(b)는 2축 스크류 압출기의 하류측의 단면도이다.
도 3은 본 발명의 제 2 실시형태에 따른 성형 장치의 부분 단면을 나타내는 정면도이다.
도 4(a) 및 4(b)는 본 발명의 다른 실시형태에 따른 단축 스크류 압출기의 단면도이고, 도 4(a)는 압출기의 상류측의 단면도이다. 도 4(b)는 강화 섬유 투입구의 하류측의 단면도이다.
도 5(a)~5(c)는 본 발명의 제 3 실시형태에 따른 성형 장치를 나타내고, 도 5(a)는 성형 장치의 부분 단면을 나타내는 정면도이고, 도 5(b) 및 5(c)는 각각 도 5(a)에서 X-X 및 Y-Y를 따라 취한 제 3 실시형태에 따른 성형 장치를 구성하는 2축 스크류 압출기의 단면도이다.
도 6(a) 및 6(b)는 2축 스크류 압출기에서 강화 섬유와 열가소성 수지가 혼련된 상태를 나타내고, 도 6(a)는 본 발명의 제 3 실시형태에 있어서 사용된 2축 스크류 압출기의 단면도이고, 도 6(b)는 관련 기술의 2축 스크류 압출기의 단면도이다.
도 7은 본 발명의 제 3 실시형태에 따른 성형 장치에 의해 성형된 성형품에 포함된 탄소 섬유의 사진이다.
도 8은 관련 기술에 따른 성형 장치에 의해 성형된 성형품에 포함된 탄소 섬유의 사진이다.
1C 성형 장치 2A 2축 스크류 압출기
2B 사출 장치 2C 2축 스크류 압출기
3 강화 섬유 공급 장치 4 성형 다이
5 형 체결 장치 6 강화 섬유 공급 장치
7 로봇 암 9 실린더
11 스크류 12 호퍼
13A 제 1 강화 섬유 투입구 13B 강화 섬유 투입구
13C 강화 섬유 투입구 14A 제 2 강화 섬유 투입구
15 다이 17a, 17b 보어
18, 19 강화 섬유 롤 21 배럴 칩
24 클리어런스 25, 26 기아 구간
27 혼련 구간 28, 29 강화 섬유
31 사출 노즐 32, 33 강화 섬유 롤
34, 35 강화 섬유 36 절단 장치
37 강화 섬유 롤 38 강화 섬유
40 실린더 41 보어
42 스크류 50 실린더
51 보어 53 스크류
54 배럴 칩 55 강화 섬유
Claims (12)
- 가소화 장치를 사용하여 섬유 강화 열가소성 수지를 얻기 위한 섬유 강화 열가소성 수지 혼련 방법으로서,
상기 가소화 장치는 실린더 및 그 실린더에 삽입된 스크류를 포함하고,
상기 방법은 열가소성 수지와 강화 섬유를 상기 실린더에 공급하고 스크류를 회전시키는 단계를 포함하고,
상기 강화 섬유가 상기 실린더에 공급될 때, 상기 실린더 내의 복수의 상이한 개소로부터 상기 강화 섬유가 공급되는 섬유 강화 열가소성 수지 혼련 방법. - 제 1 항에 있어서,
상기 가소화 장치는, 상기 실린더의 보어와 상기 스크류 사이의 클리어런스가 소정의 실린더 위치로부터 상류측보다 하류측이 더 커지도록 구성되고, 상기 강화 섬유가 상기 실린더에 공급되는 상기 복수의 개소 중 적어도 하나는 상기 소정의 실린더 위치의 하류측으로부터 공급되는 섬유 강화 열가소성 수지 혼련 방법. - 제 1 항 또는 제 2 항에 있어서,
상기 강화 섬유가 상기 실린더에 공급되는 상기 복수의 개소 중 소정의 1개소로부터 다른 개소까지의 구간에 있어서, 전단력은 상기 스크류의 형상에 의해 다른 구간보다 더 크게 설정되는 섬유 강화 열가소성 수지 혼련 방법. - 실린더; 및 그 실린더 내에서 회전가능한 스크류를 포함하는 섬유 강화 열가소성 수지 가소화 장치로서,
열가소성 수지가 상기 실린더에 공급되고 용융됨과 동시에 강화 섬유가 공급되고, 상기 열가소성 수지와 강화 섬유를 혼련하여 섬유 강화 열가소성 수지를 얻고,
상기 실린더는 상기 실린더 내의 복수의 개소에서 상기 강화 섬유가 투입되는 강화 섬유 투입구를 포함하고, 병행하여 상기 복수의 개소로부터 상기 강화 섬유가 투입되는 섬유 강화 열가소성 수지 가소화 장치. - 제 4 항에 있어서,
상기 실린더의 보어와 상기 스크류 사이의 클리어런스는 상기 강화 섬유 투입구의 상기 복수의 개소 중 소정의 개소로부터 상류측보다 하류측이 더 커지는 섬유 강화 열가소성 수지 가소화 장치. - 제 4 항에 있어서,
상기 가소화 장치는 2개의 스크류를 갖는 2축 스크류 압출기를 포함하고,
상기 실린더의 보어는 크기가 같은 2개의 원이 서로 부분적으로 중첩되는 단면 형상을 가짐으로써 상기 보어의 2개소에서 내향 배럴 칩을 형성하고,
상기 강화 섬유 투입구의 상기 복수의 개소 중 소정의 1개소로부터 하류측에 있어서, 상기 보어는 상기 배럴 칩 중 적어도 하나가 절단된 형상을 갖는 섬유 강화 열가소성 수지 가소화 장치. - 제 4 항 내지 제 6 항 중 어느 한 항에 있어서,
소정의 1개소에 위치된 상기 강화 섬유 투입구와 다른 1개소에 위치된 상기 강화 섬유 투입구 사이의 구간에 있어서는 다른 구간에 비해 혼련 시의 전단력이 큰 플라이트가 상기 스크류에 형성되는 섬유 강화 열가소성 수지 가소화 장치. - 실린더; 및 그 실린더 내에서 회전가능한 스크류를 포함하는 섬유 강화 열가소성 수지 압출기로서,
열가소성 수지가 상기 실린더에 공급되고 용융됨과 동시에 강화 섬유가 공급되고, 상기 열가소성 수지와 상기 강화 섬유를 혼련하여 섬유 강화 열가소성 수지를 얻고, 상기 얻어진 섬유 강화 열가소성 수지는 압출기에 의해 압출되고,
상기 실린더는 상기 실린더 내의 소정의 위치에서 상기 강화 섬유가 공급되는 강화 섬유 투입구를 포함하고,
상기 실린더의 보어와 스크류 사이의 클리어런스는 상기 강화 섬유 투입구 근방의 위치로부터 상류측보다 하류측이 더 커지는 섬유 강화 열가소성 수지 압출기. - 크기가 같은 2개의 원이 서로 부분적으로 중첩되는 단면 형상을 가짐으로써 2개소에서 내향 배럴 칩을 형성하는 보어를 갖는 실린더; 및
상기 보어에 회전가능하게 삽입되는 2개의 스크류를 포함하는 2축 스크류 압출기인 섬유 강화 열가소성 수지 압출기로서,
열가소성 수지가 상기 실린더에 공급되어 용융됨과 동시에 강화 섬유가 공급되고, 상기 열가소성 수지와 상기 강화 섬유를 혼련하여 섬유 강화 열가소성 수지를 얻고, 상기 얻어진 섬유 강화 열가소성 수지는 상기 압출기에 의해 압출되고,
상기 실린더는 상기 실린더 내의 소정의 위치에서 상기 강화 섬유가 공급되는 강화 섬유 투입구를 포함하고,
상기 강화 섬유 투입구 근방의 위치로부터 하류측에 있어서, 상기 보어는 상기 배럴 칩 중 적어도 하나가 절단되는 형상을 갖는 섬유 강화 열가소성 수지 압출기. - 제 9 항에 있어서,
상기 실린더의 보어와 상기 스크류 사이의 클리어런스는 상기 강화 섬유 투입구 근방의 위치로부터 상류측보다 하류측이 더 커지는 섬유 강화 열가소성 수지 압출기. - 제 8 항 내지 제 10 항 중 어느 한 항에 있어서,
상기 실린더의 상기 강화 섬유 투입구 근방의 구간은 수지 압력이 감소하는 기아 구간인 섬유 강화 열가소성 수지 압출기. - 제 8 항 내지 제 11 항 중 어느 한 항에 있어서,
상기 압출기는 절단 수단을 포함하고,
상기 강화 섬유는 상기 절단 수단에 의해 소정의 길이로 절단되어 상기 강화 섬유 투입구에 공급되는 섬유 강화 열가소성 수지 압출기.
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