When should a buyer select SWCNT rather than MWCNT?

Select SWCNT when low additive mass, a fine percolating network, or a thin conductive layer creates enough value to justify stricter dispersion, rheology, handling, and qualification controls. Select MWCNT when cost, processing latitude, and production robustness dominate.

Why do CVD growth, purification, and chirality matter?

CVD growth influences tube diameter and chirality distribution, which affect metallic or semiconducting behavior. Purification changes catalyst residue, defects, bundle state, tube damage, and dispersibility, so the current grade evidence matters more than the generic SWCNT label.

Does Aurexene Materials supply SWCNT powder, dispersion, or conductive slurry forms?

Aurexene Materials manufactures SWCNT powder and supplies selected aqueous dispersions and conductive slurry forms. Confirm the grade, concentration, carrier, surfactant, viscosity method, storage conditions, and document status before selection.

When should SWCNT be avoided?

Avoid SWCNT when a lower-cost carbon route meets the target, when black color or nanotube handling is unacceptable, or when dispersion, viscosity, filtration, resistance uniformity, finished-layer EMI, or cell-level performance cannot be validated.

單壁碳奈米管 (SWCNT)

SWCNT 是一種碳奈米管，由捲成單一圓柱形壁的石墨烯片形成。昱烯瓴新材料生產單壁奈米碳管粉體，並提供特定等級的分散體和導電漿料路線，以供客戶資格驗證。

SWCNT 的材料定義

單壁碳奈米管 (SWCNT) 與多壁碳奈米管 (MWCNT) 的差異。商業供應商等級可以包含結構的分佈；用於命名 Aurexene 材料等級的 1-2 壁措辭是等級特定的形態，可能包括少量雙壁部分，而不是 SWCNT 的一般定義。

Aurexene 材料 SWCNT 粉體和分散體等級

昱烯瓴新材料生產單壁奈米碳管粉體並提供水分散體和導電漿料路線。直徑、長度、純度、殘留物、濃度和黏度值僅屬於指定的供應商等級。在購買或放大之前確認當前特定等級的 TDS 和 COA。

SWCNT 導電網路的工作原理

高長徑比管可以以低附加質量橋接導電域。結果取決於分散、保留管長度、結電阻、手性分佈、基質相互作用、厚度和加工歷史；沒有通用添加量或電導率保證。

SWCNT 與 MWCNT 及其他碳路線

當精細的低添加量網路或薄導電層需要更嚴格的加工控制時，請選擇單壁奈米碳管。當成本、熟悉度和更寬的製程窗口更重要時，請選擇多壁奈米碳管或導電炭黑。使用下面的直接比較指南來做 ESD 和 EMI 決策。

應用適配

ESD 和其他低添加量導電網路用途非常適合篩選。 EMI 是一種有條件的優質層路線，由配方、厚度、分散、頻率、接地和測試條件控制。先進的電極和儲能用途需要漿料、電極和電池級驗證。

驗證要求

確定基質系統、載體、分散劑、固體、添加順序、剪切、過濾、幾何形狀、乾燥、調節、電阻方法和老化計劃。在樣品核准之前審查當前的 TDS、SDS 和 COA，然後在擴大規模之前驗證完整的客戶流程。

採購常見問題

結構化買家常見問題解答涵蓋單壁奈米碳管與多壁奈米碳管、CVD 生產、純化、手性、提供的形式、避免邊界以及擴大規模之前所需的證據。

文件與詢問

需求審查→等級和供應形式選擇→文件和樣品審查→客戶配方和製程驗證→放大報價。

請求 SWCNT 等級、文件、樣品和報價支援

材料識別與規格狀態

Approved values for Density are not published; confirm them during quotation or sample review.

可供等級

等級	形式	粒徑	純度	典型用途	供應狀態
YXL1.0-P	SWCNT powder; supplier-reported 1–2-wall morphology may include a minor double-wall fraction	Supplier grade value—1–2 nm center diameter; 2–8 um length	Supplier grade value—>98% carbon; residue <1%	Low-loading conductive-network and ESD screening	Confirm current YXL1.0-P TDS and COA
YXL1.5-P	SWCNT powder; supplier-reported 1–2-wall morphology may include a minor double-wall fraction	Supplier grade value—1.5–2.5 nm center diameter; 2–10 um length	Supplier grade value—>98% carbon; residue <1%; supplier graph reports G/D >=100	Low-loading conductive-network, ESD, and thin-layer screening	Confirm current YXL1.5-P TDS and COA
YXL2.0-P	SWCNT powder; supplier-reported 1–2-wall morphology may include a minor double-wall fraction	Supplier grade value—2–3 nm center diameter; 3–11 um length	Supplier grade value—>98% carbon; residue <1%	Conductive slurry, coating, and composite development	Confirm current YXL2.0-P TDS and COA
YXL04M / YXL02B	Surfactant-free aqueous SWCNT dispersion in water; 0.4 wt% / 0.2 wt%	Supplier grade value—bundle diameter 3–30 nm (peak 10 nm); length 0.29–6.2 um (peak 1.39 um)	Supplier grade value—>95% carbon purity	Water-based SWCNT dispersion screening	Confirm carrier, 60 / 90 mPa·s viscosity basis, storage, TDS, and COA
YXL-DL / YXL-DH	YXL1.5-P aqueous dispersion with anionic surfactant; 0.05 wt% / 0.2 wt%	Supplier grade value—1.5–2.5 nm center diameter	Supplier grade value—>95% carbon purity	Thin conductive film and ESD screening	Confirm 1400 mPa·s viscosity basis, storage, TDS, and COA
YXL-PB / YXL-PBN	YXL2.0-P dispersion; 0.4 wt% in water/cellulose or NMP/acrylate polymer	Supplier grade value—2–3 nm center diameter	Request current grade-specific TDS and COA	Customized conductive slurry and coating development	Confirm carrier compatibility, storage, TDS, and COA

特性	數值	方法
CAS／身分	308068-56-6
Reference-grade powder bulk density	0.10 g/cm³ for Sigma-Aldrich catalog grade 773735; not a 昱烯瓴新材料 grade specification	External catalog benchmark reported under ASTM D7481
True density versus bulk density	True/material density and loose or tapped powder bulk density are different quantities and must not be substituted	Confirm definition, sample conditioning, and method for the selected grade