Powder-Free Natural Latex
Overview
Powder-Free Natural Latex is a purified form of natural rubber latex processed to remove allergenic proteins and dispensing with powder lubricants like cornstarch. Derived from the Hevea brasiliensis tree, it retains the material's natural elasticity while reducing risks of irritation. Modern manufacturing uses centrifugation and leaching to achieve protein levels below 50μg/g, meeting stringent medical standards. The powder-free characteristic eliminates particulate contamination, making it ideal for sensitive applications like surgical environments.
Physical and Chemical Properties
As a colloidal dispersion of rubber particles in water, powder-free latex typically contains 30-60% dry rubber content (DRC). Its viscosity ranges from 30-100 cP at 25°C, adjustable with ammonia stabilizers. The material vulcanizes at 100-140°C, forming cross-linked polymers with tensile strength exceeding 25 MPa. The absence of powder additives enhances clarity and reduces surface friction coefficient to 0.2-0.4. Unlike synthetic alternatives, natural latex demonstrates superior tear resistance (≥30 N/mm) and elongation at break (≥800%).
Main Applications
Medical sector consumes over 60% of powder-free latex production, particularly for examination gloves and surgical drapes where powder residue could compromise sterility. Its use in condoms provides unmatched thinness (0.03-0.07mm) with high burst pressure resistance. Industrial applications include elastic thread for clothing and vibration dampeners. Emerging uses encompass eco-friendly adhesives and biodegradable balloon products, capitalizing on the material's environmental credentials compared to petroleum-based synthetics.
Safety and Storage
Proper storage requires ammonia preservation (0.2-0.6% w/w) to prevent bacterial growth, with shelf life of 6-12 months in HDPE containers. Freezing must be avoided as it causes irreversible coagulation. Type I latex allergies affect approximately 1-6% of the population, necessitating clear labeling. Manufacturers comply with ASTM D1076 and ISO 2004 standards, conducting rigorous endotoxin testing (<20 EU/g) for medical-grade products.
B2B Procurement Guide
Bulk buyers should specify dry rubber content (DRC) tolerance (±2%), mechanical stability time (>650s), and volatile fatty acid number (<0.05). Medical-grade procurement requires certificates for ISO 10993 biocompatibility testing. Leading producing regions include Thailand, Malaysia, and Vietnam. Container-load shipments (20MT) typically offer 5-8% cost advantages over smaller quantities. Just-in-time delivery models help mitigate storage degradation risks.
Related Manufacturers
- 主营：酸度调节剂、金属清洗剂、n甲基吡咯烷酮、天然胶乳、聚异丁烯
- 主营：导热油、二甘醇 二乙二醇、二价酸酯、天然胶乳、二甲基乙酰胺、聚乙二醇、乙二醇丁醚、异构十二烷、二甲基亚砜、二丙二醇甲醚、白油、丙二醇、三甘醇 三乙二醇、聚异丁烯、废油凝固剂、溶剂油、二甲基乙醇胺、乙醇、乙二醇、三乙醇胺、一乙醇胺、N甲基二乙醇胺、石油磺酸钠、甲基丙二醇
- 主营：dop、航空煤油、防冻液、无水柠檬酸、乙二醇、丙二醇、丙三醇、三乙醇胺、二甲基亚砜、甲基吡咯烷酮、聚乙二醇、桐油、氯化石蜡、乙醇、酒精、乙酸乙酯、溶剂油、冰醋酸、甲醇、环氧大豆油、邻苯二甲酸二辛酯、二乙二醇、磷酸
- 主营：石墨烯、甘油、片碱、天然乳胶、钛白粉、USP级甘油、聚合氯化铝、软水盐、小苏打、乙二醇、融雪剂、甲缩醛、液碱、氨水、草酸、DMF
- 主营：丙三醇、油漆油墨稀释剂、三乙醇胺、天然乳胶、二甲基亚砜、乙二醇、各类溶剂
- 主营：树脂合、木质素、分析纯、天然胶乳现货、化学试剂、涂覆金属、己二醇酯、油墨pu树脂、水性pu树脂、二乙二醇酯、二酸二甲酯、聚酯多元醇、树脂固化剂、水性聚氨酯、聚酰胺树脂、聚氨酯树脂、聚氨酯弹性体、水性喷墨打印、聚碳酸酯二醇、面料柔软整理、己二酸乙二醇、改性聚酰亚胺
- 主营：丙二醇、丙三醇、乙二醇、天然乳胶、eva150ev150、原厂原包、三井杜邦、1.4丁二醇、一水柠檬酸
- 主营：有机化工原料、聚丙二醇、聚乙二醇、二丙二醇、甘油、二甘醇、二甲基亚砜
- 主营：减水剂、纤维素、甲酸钙、天然乳胶、双氰胺、增塑剂
- 主营：邻苯二甲酸二辛酯、氯化石蜡、脂肪酸甲酯、天然乳胶、锌锭、D60溶剂油、碳氢清洗剂、丁苯橡胶、N-甲基二乙醇胺、二价酸酯、生物柴油、异构烷烃、D80溶剂油、二丙二醇甲醚、二乙二醇、防水乳液、三乙醇胺、环氧大豆油、三元酸、石油磺酸钡、石油磺酸钠、防锈剂、异构十六烷烃、异构十二烷烃、界面剂乳液
- 主营：黄丹粉、除漆剂、红丹粉、无水氟化钾、除锈剂、脱塑剂、黄血盐钾、磷酸三丁酯、硅磷晶、硫氰酸钠
- 主营：异丙醇、苯甲醇、二丁酯、天然橡胶、酸酯dbe、二甲苯、醋酸乙酯、醋酸丁酯、二辛酯、醋酸甲酯、醋酸正丙酯、醋酸仲丁酯、纯苯、三甲苯、四甲苯、溶剂油、正丁醇、甲醇、乙醇、乙二醇、碳酸二甲酯、三乙醇胺、磷酸、三氯乙烯
- 主营：溴化剂、催化剂、西曲氯铵、用于天然、电镀添加剂、表面活性剂、气相色谱分析、琥珀酰基氯亚胺
- 主营：松香、萜烯树脂、石油树脂、白乳胶、天然乳胶、环氧树脂、丙烯酸树脂、酚醛树脂、马林酸树脂、达玛树脂、附着力促进剂、二氧化硅、丁苯橡胶、水性氯丁胶乳、水性丁苯胶、水性增粘乳液、水性聚氨酯、增稠剂、消泡剂、抗氧剂、水晶滴胶、AB胶、水性黄胶、美缝剂、色浆色精
- 主营：天然乳胶、石油化工