http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109880344-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K7-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L75-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K9-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05K9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-04 |
| filingDate | 2019-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109880344-B |
| titleOfInvention | Preparation method of low-reflection high-shielding waterborne polyurethane electromagnetic shielding composite foam |
| abstract | The invention relates to the field of functional composite materials, in particular to a preparation method of low-reflection high-shielding waterborne polyurethane/graphene-loaded iron cobalt/expanded microsphere-loaded silver electromagnetic shielding composite foam. The invention realizes the low-reflection high-shielding characteristic of the shielding material by regulating the density of different fillers and fully utilizing a freezing orientation method. Firstly, the expanded microsphere-loaded silver nanoparticles with excellent conductivity, the graphene-loaded iron-cobalt nanoparticles with balanced conductivity and magnetism and water-soluble polyurethane are mixed, and the electromagnetic shielding foam is prepared by a freeze-drying method. The local distribution of the fillers is realized by regulating and controlling the densities of different types of fillers, and the high-efficiency foam shielding performance can be ensured by the upper-layer low-density high-conductivity expanded microsphere loaded with silver nano particles; the lower-layer high-density magnetic graphene loaded iron-cobalt nanoparticles can reduce electromagnetic wave reflection, and electromagnetic waves are effectively absorbed through hysteresis loss. Electromagnetic shielding composite foam with low reflection and high shielding characteristics is obtained. |
| priorityDate | 2019-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.