Shaped objects based on modified biochar and a polymer and methods for producing them
AssigneeMade of Air GmbH
InventorsDaniel SCHWAAG, Oliver Edward Christopher GOULD, Victoria LONGÁN RODRÍGUEZ
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Abstract
Subject of the invention is a method for producing a shaped object for construction applications, comprising the steps (a) providing a biochar in particulate form, which has been subjected to an oxidation reaction, (b) subjecting the biochar to a coupling reaction with a silane coupling agent, (c) mixing the biochar with a polymer, and (d) moulding the mixture. The invention also relates to shaped objects and construction materials which are obtainable by the method, and to a biochar material.
Claims16
A method for producing a shaped object for construction applications, comprising the steps
- (a) providing a biochar in particulate form, which has been subjected to an oxidation reaction,
- (b) subjecting the biochar to a coupling reaction with a silane coupling agent,
- (c) mixing the biochar with a polymer, and
- (d) moulding the mixture.
A shaped object comprising biochar in particulate form and a polymer, wherein the biochar has been subjected to an oxidation reaction after pyrolysis, wherein the oxidized biochar is modified with a silane coupling agent.
A biochar material in particulate form, wherein the biochar has been subjected to an oxidation reaction after pyrolysis, wherein the oxidized biochar is modified with a silane coupling agent which comprises a tertiary amine group, wherein the biochar was pyrolyzed at a temperature below 700° C., preferably below 600° C., wherein the specific surface area of the biochar before the oxidation reaction is between 75 and 500 m2/g, determined according to the BET method of ISO 9277:2010, wherein the biochar has an O/C element ratio of not more than 0.6, as determined according to DIN 51733.
Dependencies are inferred from the claim text.