685445

Halloysite nanoclay

• Sinônimo(s): Kaolin clay
• Fórmula linear: Al₂Si₂O₅(OH)₄ · 2 H₂O
• Número CAS: 1332-58-7
• Peso molecular: 294.19
• Número CE: 310-194-1
• Número MDL: MFCD11045913
• Código UNSPSC: 12162002
• ID de substância PubChem: 329760969
• NACRES: NA.23

Propriedades

• grau: for analytical purposes
• Formulário: nanopowder
• diâmetro × C: 30-70 nm × 1-3 μm , nanotube
• área da superfície: 64 m²/g
• cor: 75-96, Hunter Brightness
• índice de refração: n20/D 1.54
• tamanho de poro: 1.26-1.34 mL/g pore volume
• capacidade: 8.0 meq/g cation exchange capacity
• densidade: 2.53 (true specific gravity)
• cadeia de caracteres SMILES: O.O.O[Si](O)(O[Al]=O)O[Si](O)(O)O[Al]=O
• InChI: 1S/2Al.H4O7Si2.2H2O.2O/c;;1-8(2,3)7-9(4,5)6;;;;/h;;1-2,4-5H;2*1H2;;/q2*+1;-2;;;;
• chave InChI: HEFIDAICLOZRRO-UHFFFAOYSA-N

Descrição

Descrição geral

Halloysite nanoclay has a tube like morphology. It shows low electrical, thermal conductivity and strong hydrogen interactions, on account of which the inner hydroxyl groups show greater stability than the surface hydroxyl groups in halloysite. The loss of hole water occurs at nearly 300 °C.
Similar to montmorillonite, halloysite consists of two layers of aluminosilicate in 1:1 Al:Si ratio. Significant improvements in thermal, mechanical properties have been reported on addition of halloysite nanotubes in polymer composites.

Aplicação

Halloysite is frequently used as a reinforcement in various nanocomposites, some of which are listed here:
Isotactic propylene-halloysite nanocomposites.
Alloy composites by electroless/ autocatalytic deposition.
Poly(butylene terephthalate) (PBT) composites.
Zinc–halloysite nanotube (HNT) composite coatings.
Halloysite nanotube–hydroxyapatite–hyaluronic acid films.
Halloysite combined with polyamide, polypropylene, poly(ε-caprolactone) and fluroelastomers.
Its tube like morphology, high aspect ratio, and low percolation enables interesting applications as reinforcements in nanocomposites.

Informações legais

Product of Applied Minerals, Inc. Customers may obtain additional technical support and purchase commercial quantities at appliedminerals.com

Informações de segurança

• Código de classe de armazenamento: 11 - Combustible Solids
• Classe de risco de água (WGK): nwg
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable
• Equipamento de proteção individual: Eyeshields, Gloves, type N95 (US)