Particle-stabilized foams using sustainable materials

A technology of foam and particles, applied in the direction of climate sustainability, sustainable waste treatment, ceramic material production, etc., can solve problems such as high carbon dioxide emissions and large amounts of surfactants
CN112334429APending Publication Date: 2021-02-05ETH ZZURICH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ETH ZZURICH
Publication Date
2021-02-05

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Abstract

Described is a method of preparing foams, wherein a suspension comprising an aqueous liquid, particles and at least one surfactant is provided, wherein the at least one surfactant at least partially hydrophobizes a surface of the particles, and wherein the suspension comprising the particles having the at least partially hydrophobized surface is foamed. The at least one surfactant is selected fromsurfactants having a backbone chain comprising at least nine carbon atoms, the at least one surfactant preferably being an amphiphilic molecule consisting of a tail coupled to a head group, wherein the tail comprises the backbone chain comprising at least nine carbon atoms.
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Description

technical field

[0001] The present invention relates to the field of foam formation. Background technique

[0002] Modern insulation is expected to reduce total energy costs by 20% by 2030. However, today's modern solutions must also adapt to changing regulations, such as using non-flammable, non-toxic and environmentally friendly materials. Currently, many major industrial actors are unable to meet these requirements. Although made by toxic processes and highly flammable, polymer solutions such as expanded polystyrene (EPS) or polyurethane (PU) are most commonly used due to their low thermal conductivity. Other solutions, such as glass wool or mineral wool, are not flammable, but are energy-intensive to manufacture and can cause human health problems. Recent solutions such as porous cements or aerogels tend to achieve low thermal conductivity while being flame retardant and non-toxic during their manufacture. However, the former option is high in CO2 emissions, while ae...

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
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