Extrusion of polyurethane composite materials
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-047/40
B29C-047/10
B29C-047/60
B29C-047/62
B29C-047/64
C08K-003/04
C08G-018/08
C08G-018/36
C08G-018/40
C08G-018/48
C08G-018/76
C08J-005/10
C08J-009/12
C08L-075/04
C08L-075/08
C08J-009/00
C08K-007/10
C08K-007/14
B29C-045/00
B29C-047/00
B29C-047/38
B29K-075/00
B29K-105/00
B29K-105/06
B29K-105/12
B29K-105/16
B29K-709/00
C08G-101/00
C08K-003/00
출원번호
US-0180805
(2014-02-14)
등록번호
US-9139708
(2015-09-22)
발명자
/ 주소
Brown, Wade H.
출원인 / 주소
Boral IP Holdings LLC
대리인 / 주소
Meunier Carlin & Curfman LLC
인용정보
피인용 횟수 :
2인용 특허 :
294
초록▼
Methods of extruding polyurethane composite materials are described. One method includes introducing at least one polyol and inorganic filler to a first conveying section of the extruder, transferring the at least one polyol and inorganic filler to a first mixing section of an extruder, mixing the a
Methods of extruding polyurethane composite materials are described. One method includes introducing at least one polyol and inorganic filler to a first conveying section of the extruder, transferring the at least one polyol and inorganic filler to a first mixing section of an extruder, mixing the at least one polyol and the inorganic filler in the first mixing section, transferring the mixed at least one polyol and inorganic filler to a second conveying section of the extruder, introducing a di- or poly-isocyanate to the second conveying section, transferring the mixed at least one polyol and inorganic filler and the di- or poly-isocyanate to a second mixing section, mixing the mixed at least one polyol and inorganic filler with the di- or poly-isocyanate in the second mixing section of the extruder to provide a composite mixture, and transferring the composite mixture to an output end of the extruder. Other related methods are also described.
대표청구항▼
1. A method of forming a polymeric composite material in an extruder, the method comprising: introducing at least one polyol and inorganic filler to a first conveying section of the extruder, wherein the inorganic filler comprises about 60 to about 85 weight percent of the polymeric composite materi
1. A method of forming a polymeric composite material in an extruder, the method comprising: introducing at least one polyol and inorganic filler to a first conveying section of the extruder, wherein the inorganic filler comprises about 60 to about 85 weight percent of the polymeric composite material;transferring the at least one polyol and inorganic filler to a first mixing section of an extruder;mixing the at least one polyol and the inorganic filler in the first mixing section;transferring the mixed at least one polyol and inorganic filler to a second conveying section of the extruder;introducing a di- or poly-isocyanate to the second conveying section, wherein the ratio of the di- or poly-isocyanate to the at least one polyol, based on equivalent weight, is about 0.5:1 to about 1.5:1;transferring the mixed at least one polyol and inorganic filler and the di- or poly-isocyanate to a second mixing section;mixing the mixed at least one polyol and inorganic filler with the di- or poly-isocyanate in the second mixing section of the extruder to provide a composite mixture; andtransferring the composite mixture to an output end of the extruder,wherein the method further comprises introducing fibrous material in the second conveying section or in a third conveying section, the third conveying section being located between the second mixing section and a third mixing section. 2. The method of claim 1, wherein the extruder is a twin screw extruder. 3. The method of claim 1, wherein the inorganic filler is fly ash. 4. The method of claim 1, wherein the first conveying section comprises one or more transfer screws. 5. The method of claim 1, wherein the first mixing section comprises a slotted screw. 6. The method of claim 1, wherein the first mixing section comprises a lobal screw. 7. The method of claim 1, wherein the first mixing section comprises a lobal screw and a slotted screw. 8. The method of claim 1, wherein the second conveying section comprises a transfer screw. 9. The method of claim 1, wherein the second mixing section comprises a reverse screw. 10. The method of claim 9, wherein the reverse screw comprises a reverse slotted screw. 11. The method of claim 1, further comprising adding one or more components of the composite mixture in the first conveying section of the extruder, the one or more components being selected from the group consisting of a catalyst, a surfactant, and a blowing agent. 12. The method of claim 11, further comprising blending the one or more components with the at least one polyol prior to introduction to the first conveying section. 13. The method of claim 1, further comprising mixing the mixed at least one polyol and inorganic filler and the di- or poly-isocyanate in the third mixing section subsequent to the second conveying section and prior to the second mixing section. 14. The method of claim 13, wherein the third mixing section comprises a reverse screw. 15. The method of claim 1, wherein the method further comprises introducing fibrous material in the second conveying section, and mixing the fibrous material with the mixed at least one polyol and inorganic filler and the di- or poly-isocyanate in the second mixing section. 16. The method of claim 1, wherein the inorganic filler comprises a particulate inorganic filler. 17. A method of forming a polymeric composite material in an extruder, the method comprising: introducing at least one polyol, inorganic filler, and one or more additional components to a first conveying section of the extruder, wherein the inorganic filler comprises about 60 to about 85 weight percent of the polymeric composite material, wherein the one or more additional components is selected from the group consisting of a catalyst, a surfactant, and a blowing agent, wherein the extruder is a twin screw extruder, and wherein the first conveying section comprises one or more transfer screws;transferring the at least one polyol, the inorganic filler, and the one or more additional components to a first mixing section of an extruder, wherein the first mixing section comprises a lobal screw;mixing the at least one polyol, the inorganic filler, and the one or more additional components in the first mixing section;transferring the at least one polyol, the inorganic filler, and the one or more additional components to a second conveying section of the extruder, wherein the second conveying section comprises a transfer screw;introducing a di- or poly-isocyanate and a fibrous material to the second conveying section, wherein the ratio of the di- or poly-isocyanate to the at least one polyol, based on equivalent weight, is about 0.5:1 to about 1.5:1;transferring the at least one polyol, the inorganic filler, the one or more additional components, the di- or poly-isocyanate, and the fibrous material to a second mixing section, wherein the second mixing section comprises a reverse screw;mixing the mixed at least one polyol, the inorganic filler, the one or more additional components, the di- or poly-isocyanate, and the fibrous material in the second mixing section of the extruder to provide a composite mixture; andtransferring the composite mixture to an output end of the extruder.
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