公开(公告)号：US20150218349A1

公开(公告)日：2015-08-06

申请号：US14684926

申请日：2015-04-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Stephen E. Amos ,  Robert W. Hunter ,  Ronald J. Israelson ,  Towako Takeishi ,  Mark J. Williams ,  Takujiro Yamabe

IPC: C08K7/28

CPC classification number: C08K7/28 ,  C08K2201/005 ,  Y10T428/2982 ,  Y10T428/2996

Abstract: The present disclosure provides a plurality of glass bubbles having an average true density of up to about 0.55 grams per cubic centimeter and a size distribution including a median size in a range from about 15 micrometers to 40 micrometers. A hydrostatic pressure at which ten percent by volume of the plurality of glass bubbles collapses is at least about 100 megapascals. In some embodiments, the plurality of glass bubbles is a graded fraction preparable by classifying a second plurality of glass bubbles, wherein the second plurality of glass bubbles has a higher percentage of glass bubbles with a size of up to ten micrometers than the first plurality of glass bubbles. Composites including the plurality of glass bubbles are also disclosed.

Abstract translation: 本公开提供了多个平均真实密度高达约0.55克/立方厘米的玻璃气泡，其尺寸分布包括在约15微米至40微米范围内的中值尺寸。 多个玻璃泡的10％（体积）塌陷的静水压力为至少约100兆帕。 在一些实施例中，多个玻璃气泡是通过对第二多个玻璃泡进行分类而制备的分级部分，其中第二多个玻璃气泡具有比第一多个玻璃泡具有高达十微米尺寸的较高百分比的玻璃气泡 玻璃泡沫。 还公开了包括多个玻璃泡的复合材料。