Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method of making composite material.

A technology of composite materials and molten polymers, which is applied in the field of preparation of composite materials, can solve the problems of high density of composite materials and rupture of trapped gas glass microbubbles, etc.

Inactive Publication Date: 2009-03-18
3M INNOVATIVE PROPERTIES CO
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process typically produces significant amounts of trapped gas (e.g. air) and glass bubble collapse, resulting in higher or lower density composites than expected

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of making composite material.
  • Method of making composite material.
  • Method of making composite material.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] Unless otherwise specified, all parts, percentages, ratios, etc. in the examples and the rest of the specification are by weight, and all reagents in the examples are available, or from general chemical suppliers such as Sigma-Aldrich Company, Milwaukee , Wisconsin, or can be synthesized by conventional methods.

[0049] testing method

[0050] Determination of Volume Percent of Average Fractured Glass Microbubbles and Volume Percent of Trapped Gas

[0051] The furnace was heated to 600 °C and the ceramic crucible was placed in the furnace for 5 minutes. Cool the crucible in a desiccator and weigh it. The composite material sample to be tested is placed in the crucible, the sample and the crucible are weighed, and placed in a furnace heated to 600°C for 30 minutes. The crucible is removed from the furnace and weighed after cooling in a desiccator to obtain the mass of the crucible and the remaining glass. Calculate the following masses:

[0052] m c = (the quality...

Embodiment 1

[0071] Except that the vacuum port opening on the twin-screw extruder is located in zone 1 (Z1), and glass microbubbles are added using a gravimetric feeder located 38.0 cm downstream from zone 1 (Z1), and 116.0 cm downstream from zone 1 (Z1) Example 1 was prepared according to the procedure described in Comparative Example C-1, except that the molten polymer was added. The screw speed of the extruder was 75 rpm. The average collapse rate of glass microbubbles in the cooled composite was 1.2% by volume and the average entrapped gas in the composite was 3.5% by volume.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method of making composite material wherein a molten polymeric material is added to frangible solid particulates within a screw extruder.

Description

Background technique [0001] Typically friable solid particles such as glass bubbles or fibers etc. are mixed with polymeric materials to form composites. In conventional methods, friable solid particles are mixed with molten polymer material in a vessel with simple agitation. While such processes can produce high quality mixtures (eg, contain very little entrapped gas and have low levels of breakage of friable solids), such batch processes are generally more time consuming and / or more expensive than continuous processes. [0002] Various continuous processes for mixing friable solid particles with molten polymeric material have been invented, but those processes generally produce more entrapped gas and / or fractured friable solid particles than the batch processes described above, especially friable In the case of solid particles such as glass bubbles or fibers. For example, in a common continuous process, glass bubbles are added to a stream of molten polymer within the barre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B29C47/10B29C47/76B29C48/395B29C48/03B29C48/76
CPCB29C47/1081B29C47/0009B29C47/38B29K2105/16B29K2105/06B29C47/1045B29K2105/12B29C47/1027B29C48/288B29C48/297B29C48/03B29C48/2886B29C48/395B29C48/505B29C48/76
Inventor 马德琳·P·申巴赫迈克尔·C·马丁多玛修斯·恩瓦汶马哈里·J·马歇尔利·E·奥尔森布里奇特·A·本茨苏曼特里·维达格多
Owner 3M INNOVATIVE PROPERTIES CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com