Johns Manville

Other

Zhihua Guo

Jawed Asrar

Souvik Nandi

Albert George Dietz, Iii

Albert G Dietz

Mingfu Zhang

Uranchimeg Lester

Gautam Sharma

Kiarash Alavi

Michael Ketzer

Kiarash Alavi Shooshtari

Luke Saylor Weith

Elam Leed

WeRNer Groh

Philip Christopher Sharpe

Dana G Miloaga

Gerold Albert

Albert F Dietz

Luke S Weith

Rui Ferreira

Albert G Dietz Iii

Iii Albert G Dietz

Processes of making a non-woven glass fiber mat are described. The process may include forming an aqueous dispersion of fibers. The process may also include passing the dispersion through a mat forming screen to form a wet mat. The process may further include applying a carbohydrate binder composition to the wet mat to form a binder-containing wet mat. The binder compositions may include a carbohydrate, a nitrogen-containing compound, and a thickening agent. The binder compositions may have a Brookfield viscosity of 7 to 50 centipoise at 20° C. The thickening agents may include modified celluloses such as hydroxyethyl cellulose (HEC) and carboxymethyl cellulose (CMC), and polysaccharides such as xanthan gum, guar gum, and starches. The process may include curing the binder-containing wet mat to form the non-woven glass fiber mat.

Viscosity modified formaldehyde-free binder compositions and methods

Fiber-containing mats for lead acid batteries are described. The mats may include a plurality of fibers, a binder holding the plurality of fibers together, and one or more additives incorporated into the mat, where the additives may include one or more compounds selected from benzyl benzoate and a glycol ester. Additional fiber-containing mats include a plurality of woven or non-woven fibers and the one or more additives. The fiber-containing mats having the one or more additives may be used in lead-acid batteries that include a positive and negative electrode, a separator, and one or more pasting mats.

Fiber-containing mats with additives for improved performance of lead acid batteries

According to one embodiment, a plate or electrode for a lead-acid battery includes a grid of lead alloy material, a paste of active material applied to the grid of lead alloy material, and a nonwoven fiber mat disposed at least partially within the paste of active material. The nonwoven fiber mat includes a plurality of fibers, a binder material that couples the plurality of fibers together, and a conductive material disposed at least partially within the nonwoven fiber mat so as to contact the paste of active material. In some embodiments, the nonwoven fiber mat may have an electrical resistant of less than about 100,000 ohms per square to enable electron flow on a surface of the nonwoven fiber mat.

Conductive mat for battery electrode plate reinforcement and methods of use therefor

According to one embodiment, a nonwoven fiber mat for reinforcing a plate or electrode of a lead-acid battery includes a plurality of glass fibers and an acid resistant binder that couples the plurality of glass fibers together. The nonwoven fiber mat also includes a wetting component that is applied to the glass fibers and/or nonwoven fiber mat to increase the wettability of the nonwoven fiber mat such that the nonwoven fiber mat exhibits an average water wick height of at least 0.5 cm after exposure to water for 10 minutes conducted according to method ISO8787. The wetting component may be dissolvable in an acid solution of the lead-acid battery such that a significant portion of the nonwoven fiber mat is lost due to dissolving of the wetting component.

Battery electrode plate reinforcement mat having improved wettability characteristics and methods of use therefor

A lead-acid battery electrode including a tubular bag. The tubular bag includes a textile fabric, wherein the textile fabric includes a consolidated binder with thermoplastic properties and at least one electrically conductive additive.

Gauntlet lead-acid battery systems

Soy protein and carbohydrate containing binder compositions are described. The binder compositions may include a carbohydrate, a nitrogen-containing compound, and a soy protein. The binder compositions may also optionally include thickening agents such as modified celluloses and polysaccharides.

Soy protein and carbohydrate containing binder compositions

Acid-resistant and biosoluble glass compositions and products made therefrom. The glass compositions exhibit acid resistance, durability in white water as may be used in a wet laid fabrication process, and good biosolubility. In another aspect, a glass fiber mat is made from such a glass composition, and may be used in the manufacture of lead-acid batteries, for example as a pasting material or battery separator.

Battery containing acid resistant nonwoven fiber mat with biosoluble microfibers

Viscosity-modified carbohydrate binder compositions are described. The binder compositions may include a carbohydrate, a nitrogen-containing compound, and a thickening agent. The binder compositions may have a Brookfield viscosity of 7 to 50 centipoise at 20&#xb0; C. The thickening agents may include modified celluloses such as hydroxyethyl cellulose (HEC) and carboxymethyl cellulose (CMC), and polysaccharides such as xanthan gum, guar gum, and starches.

Viscosity modified formaldehyde-free binder compositions

Embodiments of the invention provide methods and apparatuses for enhancing electron flow within a battery, such as a lead-acid battery. In one embodiment, a battery separator may include a conductive surface or layer upon which electrons may flow. The battery separator may include a fiber mat that includes a plurality of electrically insulative fibers. The battery separator may be positioned between electrodes of the battery to electrically insulate the electrodes. The battery separator may also include a conductive material disposed on at least one surface of the fiber mat. The conductive material may contact an electrode of the battery and may have an electrical conductivity that enables electron flow on the surface of the fiber mat.

Mat made of glass fibers or polyolefin fibers used as a separator in a lead-acid battery

Glass-fiber mats for lead-acid batteries are described. The glass-fiber mats may include a plurality of glass fibers held together with a binder. The binder may be made from a binder composition that includes (i) an acid resistant polymer, and (ii) a hydrophilic agent. The hydrophilic agent increases the wettability of the glass-fiber mat such that the glass-fiber mat forms a contact angle with water or aqueous sulfuric acid solution of 70&#xb0; or less. Also described are methods of making the glass-fiber mats that include applying a binder composition to the glass fibers, and including a hydrophilic agent in the glass fiber mat that increases the wettability of the mat. The hydrophilic agent may be added to the binder composition, applied to the glass-fiber mat, or both.

Acid resistant glass mats that include binders with hydrophilic agents

According to one embodiment, a nonwoven fiber mat includes between 10% and 50% by weight of a plurality of first glass fibers having an average diameter of less than 5 &#x3bc;m and between 50% and 90% by weight of a plurality of second glass fibers having an average diameter of greater than 6 &#x3bc;m. The nonwoven fiber mat also includes an acid resistant binder that binds the first and second glass fibers together. The nonwoven fiber mat has an average pore size of between 1 and 100 &#x3bc;m and exhibits an air permeability of below 100 cubic feet per minute per square foot (cfm/ft) as measured by the Frazier test at 125 Pa according to ASTM Standard Method D737.

Small pore size nonwoven mat with hydrophilic/acid resistant filler used in lead acid batteries and applications therefor

Embodiments of the invention provide an absorptive glass mat (AGM) battery having a positive electrode, a negative electrode, and a nonwoven fiber separator positioned between the electrodes. The separator includes a mixture of glass fibers having diameters between about 8 &#x3bc;m to 13 &#x3bc;m and glass fibers having diameters of at least 6 &#x3bc;m and a silane sizing. An acid resistant binder bonds the glass fibers to form the separator. A wetting component is applied to the separator to increase the wettability such that the separator has or exhibits an average water wick height of at least 1.0 cm after exposure to water for 10 minutes. A conductive material is disposed on at least one surface of the separator such that when the separator is positioned adjacent an electrode, the conductive material contacts the electrode. An electrical resistance of less than 100,000 ohms per square enables electron flow about mat.

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Centennial, CO, United States of America

Zhihua Guo