序章
化学手袋は、手を保護し、危険物質への曝露を防ぐために、化学、工業、実験室の現場で広く使用されている必須の個人用保護具 (PPE) です。手袋の素材によって特定の化学物質や環境に対する保護が提供されるため、適切な化学手袋を選択することが重要です。原材料と製造プロセスは、さまざまな種類の化学手袋の機能と用途を決定する重要な物理的および化学的特性を与えます。
Common Raw Materials
Chemical gloves are typically made from synthetic rubber, natural rubber latex, nitrile, neoprene, polyethylene, polyvinyl chloride (PVC), and other specialty materials. Here is an overview:
| 材料 | 説明 |
|---|---|
| Natural Rubber Latex | Derived from the sap of rubber trees; stretchy and flexible; provides good chemical resistance except to petroleum products |
| Nitrile | Synthetic rubber; more chemical-resistant than natural latex with added durability |
| Neoprene | Synthetic rubber; protective against oils, greases, acids, caustics and alcohols |
| ポリエチレン | Thermoplastic polymer; very chemical-resistant; limited stretch and dexterity |
| PVC | Thermoplastic vinyl polymer; chemically resistant; rigid yet flexible |
The raw materials are selected based on the target chemical and physical properties needed for the glove’s intended functions. The materials are formulated, compounded with additives, and manufactured using various processes like dip molding, injection molding etc.
Key Functions
Chemical gloves serve a range of key functions:
耐薬品性
The gloves act as a protective barrier between hazardous chemicals and the skin. Different rubber and plastic materials have specific permeation breakthrough times and degradation resistance levels to different solvents, acids, oils etc. Selecting the right chemical resistance is vital.
Physical Protection
The gloves shield against physical hazards like cuts, abrasions etc. Thicker gloves provide better puncture and abrasion resistance.
Grip and Dexterity
The gloves must provide good grip and finger dexterity for handling equipment and objects. Nitrile, latex and rubber blends optimize grip and feel.
Comfort and Breathability
Given the extended wear times required, comfort features like breathability, sweat management and ergonomic fit are also important.
Selection Criteria
Key criteria for selecting chemical glove types include:
| Criteria | 説明 |
|---|---|
| Resistance to Target Chemicals | Match the glove material to the specific chemical resistance needed |
| Breakthrough Time | The time taken for the chemical to permeate through the glove material |
| Thickness | Thicker gloves (5-6 mil) provide better chemical resistance |
| Grip Requirement | Whether good dexterity and finger sensitivity is needed |
| Visibility Requirements | Some settings require high visibility colored gloves |
Proper glove selection is based on carefully evaluating the application requirements, glove capabilities, and doing trial assessments.
結論
Chemical gloves are vital PPE made from specialty rubber and plastic formulations. The right choice comes down to selecting materials with chemical compatibility, adequate breakthrough times, grip, comfort and durability for the target use environment and tasks. By carefully balancing these key properties and functions, chemical gloves provide indispensable protection to millions of workers daily across industrial and laboratory settings while enhancing safety and productivity.
よくある質問
What are some common disposable glove types?
Common disposable options include nitrile, latex, vinyl and neoprene gloves in a range of lengths, thicknesses and finishes. Disposable nitrile gloves provide the best all-round chemical resistance.
What are some signs of 化学 glove damage or failure?
Signs include color changes, stiffening, softening, swelling, shrinkage, tackiness, cracks or punctures. Damaged or worn gloves should be replaced immediately.
Should fabric liners be used with chemical gloves?
Yes, fabric liners significantly improve comfort and sweat absorption compared to wearing gloves directly on skin over extended periods. However, they also increase glove bulk.
Should chemical gloves be re-used?
No, chemical gloves should always be worn only once then discarded per usage instructions. Used gloves likely have microscopic perforations and chemical residue risks from prior exposures. Reuse seriously compromises protectiveness.
What are some innovations in chemical glove materials?
Active innovations are focused on improving chemical resistance, comfort and breathability. Key trends include use of liquid crystal polymer films, fluorocarbon rubbers, silicone coatings and activated carbon air filters.
