Steven Robert Alberding

US Patent:

20170203552, Jul 20, 2017

Filed:

Mar 29, 2017

Appl. No.:

15/472819

Inventors:

- Newark DE, US
James R. Hanrahan - Newark DE, US
Steven R. Alberding - Middletown DE, US
Joseph W. Henderson - Elkton MD, US
Kevin J. Mabe - Elkton MD, US
Anit Dutta - Wilmington DE, US
Gregory D. Culler - Nottingham PA, US

International Classification:

B32B 27/12
B32B 7/12
B32B 27/32
B32B 27/06
B32B 5/02

Abstract:

Thermally insulative materials and articles are described. In one embodiment, the thermally insulative material comprises a polymer matrix, aerogel particles and expanded microspheres, wherein the aerogel particles are present in an amount of 30% by weight or greater, the polymer matrix is present in an amount of greater than or equal to 20% by weight and the expanded microspheres are present in an amount of 0.5% to 15% by weight, the percentages being based on the total weight of the polymer matrix, the aerogel particles and the expanded microspheres; and wherein the thermal conductivity of the thermally insulative material is less than 40 mW/m K at atmospheric conditions.

US Patent:

20150176749, Jun 25, 2015

Filed:

Dec 19, 2014

Appl. No.:

14/576439

Inventors:

- Newark DE, US
James R. Hanrahan - Newark DE, US
Steven R. Alberding - Middletown DE, US
Joseph W. Henderson - Elkton MD, US
Kevin J. Mabe - Elkton MD, US

International Classification:

F16L 59/02

Abstract:

The present invention is directed to a thermally insulative material comprising PTFE, including an expanded PTFE (ePTFE), having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. In one embodiment, the insulative material of the present invention includes aerogel particles and polytetrafluoroethylene (PTFE). The insulative material may be formed into articles that are hydrophobic, highly breathable, possess high strength, and which may be used in non-static applications such as dynamic flexing and the like. The insulative articles are flexible, stretchable, and bendable. Also, the insulative material has little to no shedding or dusting of fine particles. Aerogel particles having a particle density of less than about 100 kg/mand a thermal conductivity of less than or equal to about 15 mW/m K at atmospheric conditions (about 298.5 K and 101.3 kPa) may be used in the insulative material.