OPAQUE QUARTZ GLASS AND PRODUCTION METHOD THEREOF
[Problem] To provide an opaque quartz glass having excellent heat shielding properties, mechanical strength, and surface smoothness. [Solution] An opaque quartz glass having excellent heat shielding properties, mechanical strength, and surface smoothness, wherein silicon nitride beads having an aver...
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| creator | KUNIYOSHI MINORU ITO CHIEMI SUZUKI TAKAYA SUGANO YUKIHIRO |
| description | [Problem] To provide an opaque quartz glass having excellent heat shielding properties, mechanical strength, and surface smoothness. [Solution] An opaque quartz glass having excellent heat shielding properties, mechanical strength, and surface smoothness, wherein silicon nitride beads having an average size of 0.1-0.3 mm are used as a grinding medium in wet grinding of a slurry containing 45-75 wt% of silica powder dispersed in water so that the silicon nitride generated as a result of wearing of the silicon nitride beads functions as a foaming agent, whereby the opaque quartz glass includes independent spherical air bubbles having an average size of 2-30 mu m, has a density of 1.90-2.20 g/cm and a whiteness of 80 or more, and/or, when having a thickness of 3 mm, has a reflectance of light having a wavelength of 0.2-3 mu m of 80% or more, a bending strength of 70 MPa or more, and a surface roughness Ra for a baking-finished surface of 0.7 mu m or less.
【课题】本发明提供一种热线屏蔽性、机械强度、表面平滑性优异的不透明石英玻璃。【解决手段】本发明通过对将二氧化硅粉末 |
| format | Patent |
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【课题】本发明提供一种热线屏蔽性、机械强度、表面平滑性优异的不透明石英玻璃。【解决手段】本发明通过对将二氧化硅粉末</description><language>chi ; eng</language><subject>CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS ; CHEMISTRY ; GLASS ; JOINING GLASS TO GLASS OR OTHER MATERIALS ; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES ; METALLURGY ; MINERAL OR SLAG WOOL ; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS ; SURFACE TREATMENT OF GLASS</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201027&DB=EPODOC&CC=CN&NR=111836787A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201027&DB=EPODOC&CC=CN&NR=111836787A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KUNIYOSHI MINORU</creatorcontrib><creatorcontrib>ITO CHIEMI</creatorcontrib><creatorcontrib>SUZUKI TAKAYA</creatorcontrib><creatorcontrib>SUGANO YUKIHIRO</creatorcontrib><title>OPAQUE QUARTZ GLASS AND PRODUCTION METHOD THEREOF</title><description>[Problem] To provide an opaque quartz glass having excellent heat shielding properties, mechanical strength, and surface smoothness. [Solution] An opaque quartz glass having excellent heat shielding properties, mechanical strength, and surface smoothness, wherein silicon nitride beads having an average size of 0.1-0.3 mm are used as a grinding medium in wet grinding of a slurry containing 45-75 wt% of silica powder dispersed in water so that the silicon nitride generated as a result of wearing of the silicon nitride beads functions as a foaming agent, whereby the opaque quartz glass includes independent spherical air bubbles having an average size of 2-30 mu m, has a density of 1.90-2.20 g/cm and a whiteness of 80 or more, and/or, when having a thickness of 3 mm, has a reflectance of light having a wavelength of 0.2-3 mu m of 80% or more, a bending strength of 70 MPa or more, and a surface roughness Ra for a baking-finished surface of 0.7 mu m or less.
【课题】本发明提供一种热线屏蔽性、机械强度、表面平滑性优异的不透明石英玻璃。【解决手段】本发明通过对将二氧化硅粉末</description><subject>CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS</subject><subject>CHEMISTRY</subject><subject>GLASS</subject><subject>JOINING GLASS TO GLASS OR OTHER MATERIALS</subject><subject>MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES</subject><subject>METALLURGY</subject><subject>MINERAL OR SLAG WOOL</subject><subject>SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS</subject><subject>SURFACE TREATMENT OF GLASS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDD0D3AMDHVVCAx1DAqJUnD3cQwOVnD0c1EICPJ3CXUO8fT3U_B1DfHwd1EI8XANcvV342FgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8c5-hoaGFsZm5hbmjsbEqAEAZFwmwA</recordid><startdate>20201027</startdate><enddate>20201027</enddate><creator>KUNIYOSHI MINORU</creator><creator>ITO CHIEMI</creator><creator>SUZUKI TAKAYA</creator><creator>SUGANO YUKIHIRO</creator><scope>EVB</scope></search><sort><creationdate>20201027</creationdate><title>OPAQUE QUARTZ GLASS AND PRODUCTION METHOD THEREOF</title><author>KUNIYOSHI MINORU ; ITO CHIEMI ; SUZUKI TAKAYA ; SUGANO YUKIHIRO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN111836787A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2020</creationdate><topic>CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS</topic><topic>CHEMISTRY</topic><topic>GLASS</topic><topic>JOINING GLASS TO GLASS OR OTHER MATERIALS</topic><topic>MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES</topic><topic>METALLURGY</topic><topic>MINERAL OR SLAG WOOL</topic><topic>SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS</topic><topic>SURFACE TREATMENT OF GLASS</topic><toplevel>online_resources</toplevel><creatorcontrib>KUNIYOSHI MINORU</creatorcontrib><creatorcontrib>ITO CHIEMI</creatorcontrib><creatorcontrib>SUZUKI TAKAYA</creatorcontrib><creatorcontrib>SUGANO YUKIHIRO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KUNIYOSHI MINORU</au><au>ITO CHIEMI</au><au>SUZUKI TAKAYA</au><au>SUGANO YUKIHIRO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>OPAQUE QUARTZ GLASS AND PRODUCTION METHOD THEREOF</title><date>2020-10-27</date><risdate>2020</risdate><abstract>[Problem] To provide an opaque quartz glass having excellent heat shielding properties, mechanical strength, and surface smoothness. [Solution] An opaque quartz glass having excellent heat shielding properties, mechanical strength, and surface smoothness, wherein silicon nitride beads having an average size of 0.1-0.3 mm are used as a grinding medium in wet grinding of a slurry containing 45-75 wt% of silica powder dispersed in water so that the silicon nitride generated as a result of wearing of the silicon nitride beads functions as a foaming agent, whereby the opaque quartz glass includes independent spherical air bubbles having an average size of 2-30 mu m, has a density of 1.90-2.20 g/cm and a whiteness of 80 or more, and/or, when having a thickness of 3 mm, has a reflectance of light having a wavelength of 0.2-3 mu m of 80% or more, a bending strength of 70 MPa or more, and a surface roughness Ra for a baking-finished surface of 0.7 mu m or less.
【课题】本发明提供一种热线屏蔽性、机械强度、表面平滑性优异的不透明石英玻璃。【解决手段】本发明通过对将二氧化硅粉末</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS |
| title | OPAQUE QUARTZ GLASS AND PRODUCTION METHOD THEREOF |
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