http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113981733-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e164bcc4bd54075650f89b687ea057ff |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H13-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21F13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-69 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-69 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H13-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21F13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-10 |
| filingDate | 2021-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b36e52589bffa2acb2890dbabd17f8cc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e3ca07b40637d5ffb9ee9af3a569448d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dcfe9c38ed8996760e2b4e801f80b5a5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2d6056a5dd944f1d06bf7e9efce64b79 |
| publicationDate | 2022-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113981733-A |
| titleOfInvention | A kind of paper preparation method with high proportion of phosphogypsum whiskers replacing fibers |
| abstract | The invention discloses a paper preparation method with a high proportion of phosphogypsum whiskers replacing fibers, which comprises the following steps: (1) adding anhydrous phosphogypsum whiskers with a length of 200 μm to 1000 μm into a non-polar solvent to prepare a solid liquid mixture, adding a coupling agent to the solid-liquid mixture, obtaining surface-modified phosphogypsum whiskers after the stirring reaction, and mixing the surface-modified phosphogypsum whiskers with pulp fibers to form a mixed slurry; (2) Adding water to the mixed slurry in step (1) to make a slurry concentration of 1%, adding a retention aid with a mass of 0.2-0.5wt% of the mixed slurry, after dispersion and papermaking, a high proportion of phosphogypsum whiskers can be obtained to replace fibers paper. The invention uses high-length phosphogypsum whiskers as raw materials, and through surface modification and design of a new retention aid system, realizes the preparation of paper with a whisker replacement rate exceeding 50%. High value utilization. |
| priorityDate | 2021-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.