公开(公告)号：JPH0377767B2

公开(公告)日：1991-12-11

申请号：JP13609784

申请日：1984-06-29

Applicant: NOK CORP

Inventor： KAKO MASAFUMI

IPC: B29C43/02 ,  B29C43/32 ,  B29K29/00 ,  B29L23/00 ,  B29L29/00 ,  B29L31/00 ,  C08J5/00

公开(公告)号：JPS63278943A

公开(公告)日：1988-11-16

申请号：JP11244987

申请日：1987-05-11

Applicant: NOK CORP

Inventor： KAKO MASAFUMI ,  YOSHIDA MINORU ,  SASAKI YASUYORI

IPC: C08J9/26 ,  C08F6/00 ,  C08L27/12 ,  C08L101/00

Abstract: PURPOSE:To obtain a uniform, a microporous body free of any residual substance by a simple process, by firing a prefoam formed from a specified polymer mixture solution comprising a heat-resistant polymer and a decomposable polymer. CONSTITUTION:A heat-resistant polymer (A) such as a fluororesin or a polyimide resin and a polymer (B) which can be depolymerized or thermally decomposed at 250-400 deg.C, such as a depolymerizable polymer (a) such as poly(meth)acrylate, polycarbonate, poly-alpha-methylstyrene or poytrifluorostyrene or a heat- decomposable polymer (b) such as a polyacrylic resin, PVA, polyacetal, polyamide, polyester, PP or PS are formed into dispersions in organic solvents or water as media or into solutions in organic solvents, and the formed dispersions or solutions are mixed together to obtain a polymer mixture solution. A prefoam obtained by impregnating a support such as a glass plate or a glass cloth by immersion is fired at a temperature higher than the decomposition temperature of component B to obtain a porous body of an average pore diameter of 0.01-10mu.

公开(公告)号：JPS6114916A

公开(公告)日：1986-01-23

申请号：JP13609784

申请日：1984-06-29

Applicant: Nok Corp

Inventor： KAKO MASAFUMI

IPC: B29C43/02 ,  B29C43/32 ,  B29K29/00 ,  B29L23/00 ,  B29L29/00 ,  B29L31/00 ,  C08J5/00

Abstract: PURPOSE:To obtain the void-free titled molded parts with uniform quality by a method wherein glycols, glycerin and water are added to polyvinyl alcohol and heated in order to plastify and, after that, mixed with filler and dried and finally thermoformed under compression. CONSTITUTION:Glycols such as ethylene glycol or the like or glycerin and water as plasticizer are added to polyvinyl alcohol and heated at 70-100 deg.C for 2-10hr in order to plastify said polyvinyl alcohol. Next, filler such as aluminum oxide, silicon dioxide, carbon black, red oxide or the like is mixed with the polyvinyl alcohol and kneaded. The resultant mixture is dried by hot air in a drying oven at 70-100 deg.C. After that, the dried mixture is thermoformed under compression at 130-180 deg.C inorder to obtain an aimed-at molded part.

Abstract translation: 目的：通过将乙二醇，甘油和水加入到聚乙烯醇中并加热以便塑化，然后与填料混合并干燥并最后在压缩下热成型的方法获得具有均匀质量的无空隙的标题模塑部件。 构成：将乙二醇等乙二醇或甘油和水作为增塑剂加入到聚乙烯醇中，并在70-100℃下加热2-10小时，以使所述聚乙烯醇塑化。 接下来，将填充剂如氧化铝，二氧化硅，炭黑，氧化红等与聚乙烯醇混合并捏合。 所得混合物在70-100℃的干燥炉中用热空气干燥。 之后，将干燥的混合物在130-180℃的压缩下热成型，以获得目标模制部件。