樂泰 401

樂泰 401

Applicable substrates: metals, plastics and elastomers
Viscosity: Low viscosity
Curing time: 5 seconds
Packaging specifications: 20g/50g/500g
Color: Clear
Viscosity [cP]: 100
Filling Gap: 0.005 in. (0.15 mm)
Cure Time, Steel (Seconds): 5
Shear Strength, GBMS: 2,900 psi (20 N/mm²)
Temperature Range: -40°C to 121°C (-40°F to 250°F)

概述

樂泰 401 是 medium-viscosity, fast-curing cyanoacrylate (instant adhesive) designed as an all-rounder for bonding a wide variety of materials. It cures in seconds at room temperature when exposed to ambient moisture, forming a strong, rigid bond line.

It’s especially useful when you need to bond mixed substrates, ，包括：

  • Metals (steel, aluminum, copper, etc.)

  • Many plastics and elastomers

  • Porous and absorbent materials such as wood, leather, paper, cork and fabric

Typical characteristics (approximate, for positioning only):

  • 化學： 氰基丙烯酸乙酯

  • 外觀： 無色透明液體

  • 黏度： Medium (flows enough to wet surfaces, but not too runny)

  • 比賽時間 通常 a few seconds to under 30 seconds, depending on materials and gap

  • Service temperature (typical): around –40 °C to +80 °C

This balance of speed, strength and versatility is why Loctite 401 is often chosen as a “general-purpose” CA in both production and maintenance.

主要功能與優勢

  • Universal substrate compatibility
    債券 metals, most plastics, elastomers and porous substrates, making it ideal when you don’t want multiple different instant adhesives in stock.

  • 室溫下快速固定
    Achieves handling strength in 秒 on many materials, keeping assembly and repair work moving quickly.

  • 中等黏度，可控制流動性
    Thin enough to wick into tight joints, but viscous enough to 留在原地 and not run everywhere.

  • Good performance on porous materials
    Compared with very low-viscosity CAs, Loctite 401 is less likely to soak straight into substrates like wood, paper or leather, giving better actual bond-line build.

  • 單組分，使用方便
    No mixing, no heat; just apply to one surface and assemble. Great for line-side assembly, repair benches and field work.

  • Small amounts go a long way
    CAs work best in 薄鍵線, so only a small drop is needed, which helps control cost per joint.

典型應用

Loctite 401 is widely used in:

  • General industrial assembly

    • 黏合 plastic or rubber components to metal housings

    • Fixing small parts, clips, guides and pads

    • Quick fixture before mechanical fastening

  • 電子與電氣裝置

    • 保護 strain reliefs, grommets and cable boots

    • Bonding small plastic parts around switches, LEDs and connectors (where compatible)

  • Furniture, craft and hobby work

    • 黏合 wood, MDF, leather, cork and fabric in small fixtures and decorative elements

    • Quick repairs on fixtures and displays

  • 保養與維修 (MRO)

    • Rapid repair of broken plastic covers and knobs

    • 重新接合 rubber feet, gaskets and seals where flexibility is not critical

For low-surface-energy plastics (PP, PE, PTFE), you’ll typically pair Loctite 401 with a suitable 聚烯烴底漆 to improve adhesion.

How to Use Loctite 401

Always follow the latest Technical Data Sheet (TDS) and your plant procedures. This is a practical summary.

步驟 1 – 表面處理

  1. Ensure both surfaces are 乾淨、乾燥、無油、無灰塵、無脫模劑.

  2. Degrease metals and glossy plastics with a suitable solvent.

  3. Light abrasion (followed by cleaning) can improve adhesion on many metals and rigid plastics.

步驟二 – 申請

  1. 申請 a small drop or thin bead of Loctite 401 to 一名 的接合面。.

  2. 目標為 thin, even film—excessive adhesive will slow cure and can reduce final strength.

  3. For porous materials, you may need slightly more adhesive, but still avoid flooding the joint.

步驟 3 - 組裝

  1. Bring the parts together quickly and align them correctly; cure starts as soon as surfaces contact.

  2. Press together firmly to squeeze the adhesive into a very thin bond line.

  3. Hold parts in place until 處理強度 is reached (usually seconds to tens of seconds, depending on substrate, gap and humidity).

步驟 4 - 醃製與處理

  1. Avoid disturbing the joint until it has fully set.

  2. For maximum properties, allow 室溫下可保存 24 小時 after assembly before applying full load, especially on critical parts or larger bond areas.

步驟 5 - 清理

  • 抹去 立即擠出 使用相容的溶劑。.

  • Once cured, cyanoacrylate is best removed by 機械方式 (刮削、小心切割）或專用 CA 拆解機。.

安全與操作

  • 可在幾秒鐘內粘合皮膚和眼睛 – avoid contact with skin; never touch eyes if adhesive is present.

  • 用於 通風良好的區域; ；蒸氣會刺激眼睛和呼吸道。.

  • 穿著 安全眼鏡和合適的手套 (e.g., nitrile) when handling repeatedly or in production.

  • 遠離 cotton or wool; rapid polymerization can generate heat and cause material to harden or smoke.

  • 儲存於 陰涼乾燥處, tightly closed, ideally in the original container.

  • Dispose of adhesive and contaminated materials according to local regulations; don’t pour liquid CA into drains.

請務必參閱目前的 安全資料表 (SDS) before frequent or large-scale use.

常見問題

Q1: What is Loctite 401 mainly used for?
Loctite 401 is mainly used as a general-purpose instant adhesive 為 fast bonding of metals, plastics, elastomers and porous materials in assembly, repair and hobby applications.

Q2: How is it different from other Loctite instant adhesives?
Loctite 401 is positioned as a universal, medium-viscosity CA with good performance on porous and mixed substrates. Other grades may be optimized for low odor, high temperature, rubber-toughening, low viscosity wicking, etc.

Q3: Can Loctite 401 bond porous materials like wood and leather?
Yes. One of its strengths is handling 多孔材料 such as wood, leather, paper and fabric better than very thin CAs, which tend to soak in too quickly.

Q4: How fast does Loctite 401 cure?
It typically fixtures in seconds—often under 30 seconds—depending on material, gap and humidity. Full cure and maximum properties are usually reached within 二十四小時 室溫下。.

Q5: Does Loctite 401 need any mixing or heat?
不，它是一個 single-component, room-temperature curing adhesive activated by surface moisture. No mixing or external heat is required for normal use.

Q6: Can I use Loctite 401 on polyethylene or polypropylene?
On its own, adhesion to PE, PP and PTFE is poor. To bond these, you typically need a special primer for polyolefins, or a different adhesive system designed for those plastics.

Q7: Is the cured bond flexible?
Cured Loctite 401 forms a rigid bond line. It can tolerate some movement in small, stiff parts, but it is not a flexible adhesive. For joints that flex or peel significantly, a rubber-toughened CA or structural adhesive may be better.

Q8: How can I remove Loctite 401 if I make a mistake?
Uncured adhesive can often be wiped away with a suitable solvent. Once cured, removal usually requires 機械方法 (scraping, cutting, sanding) or a commercial cyanoacrylate debonder, and may damage the substrate.

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