-
1.发明公开公开(公告)号：US20230203358A1
公开(公告)日：2023-06-29
申请号：US17928294
申请日：2021-05-31
Applicant: Aalto University Foundation sr
Inventor： Ari Seppälä , Roza Yazdani
IPC: C09K5/06
CPC classification number: C09K5/063
Abstract: Temperature responsive phase change bio-complexes (PCBC) with tunable physicochemical properties and preparation method thereof. The phase change bio-complexes consist of a phase change material (PCM) (or mixture of PCMs) and a polysaccharide (or combination of polysaccharides). The polysaccharide provides mechanical and thermal stabilization and the PCM provides temperature responsive properties to the complexation. In order to undergo complexation with polysaccharides, sugar alcohols and salt hydrates classifications of PCMs are preferred which results in compatibility and homogeneity of the bio-complexes. Addition of multivalent cations (water soluble salts) and/or salts of an acid tunes the thermophysical properties of the bio-complexes such as tunable temperature and latent heat of fusion and structural and thermal stability. These environmentally benign phase change bio-complexes can be applied in different form-stable formats such as powdered, films, pellets, sheets, beads, sponge etc. for thermal management purposes including thermal energy storage and thermal protection via heat absorbing-releasing, for instance, in building, packaging, electronics, temperature sensitive items (black boxes) and wearables.
-
2.发明授权公开(公告)号：US11203707B2
公开(公告)日：2021-12-21
申请号：US16346894
申请日：2017-11-02
Applicant: Aalto University Foundation sr
Inventor： Ari Seppälä , Salla Puupponen
Abstract: The present invention relates to a cold-crystallizing material having high latent heat, and a method of using the present material for heat storing. The material of the invention comprises of a phase change material and an additive which is preferably a hydrophilic polymer matrix. Preferably, sugar alcohols, such as erythritol or D-mannitol, are used as the phase change material. The polymer of the invention is preferably cross-linked and ionic, i.e. a polyelectrolyte. PCM stores a high amount of heat energy while melting and releases the stored thermal energy by cold-crystallization. Compared to previously studied cold-crystallizing materials, the latent heat of the cold-crystallizing material of the invention is considerably higher, and cold-crystallization is more repeatable in successive melting-crystallization cycles. The material can be used for heat storing. Heat energy can be released from the material by a heat pulse on demand. The method is particularly suitable for long-term heat storing.
-
3.发明申请公开(公告)号：US20190316017A1
公开(公告)日：2019-10-17
申请号：US16346894
申请日：2017-11-02
Applicant: AALTO UNIVERSITY FOUNDATION SR
Inventor： Ari Seppälä , Salla Puupponen
Abstract: The present invention relates to a cold-crystallizing material having high latent heat, and a method of using the present material for heat storing. The material of the invention comprises of a phase change material and an additive which is preferably a hydrophilic polymer matrix. Preferably, sugar alcohols, such as erythritol or D-mannitol, are used as the phase change material. The polymer of the invention is preferably cross-linked and ionic, i.e. a polyelectrolyte. PCM stores a high amount of heat energy while melting and releases the stored thermal energy by cold-crystallization. Compared to previously studied cold-crystallizing materials, the latent heat of the cold-crystallizing material of the invention is considerably higher, and cold-crystallization is more repeatable in successive melting-crystallization cycles. The material can be used for heat storing. Heat energy can be released from the material by a heat pulse on demand. The method is particularly suitable for long-term heat storing.
-
-
Search Results
3
records
(took 0.011 seconds)
