Overview
Silicone materials are synthetic polymers with a backbone of alternating silicon and oxygen atoms, often combined with organic side groups. First developed in the early 20th century, these materials bridge the gap between organic and inorganic chemistry. Their unique molecular structure grants exceptional properties including wide temperature stability (-60°C to 300°C), UV resistance, and physiological inertness. Silicones exist in various forms - fluids, resins, rubbers, and gels - each tailored for specific industrial applications.
Physical and Chemical Properties
Silicones demonstrate remarkable thermal stability, maintaining flexibility at low temperatures while resisting degradation at high temperatures. Their low surface tension (20-22 mN/m) creates water-repellent characteristics, making them ideal for waterproofing applications. Chemically inert, silicones resist oxidation, ozone, and many chemicals. They exhibit excellent dielectric properties (breakdown voltage 15-20 kV/mm) and low thermal conductivity (0.2 W/m·K). The materials' mechanical properties vary significantly with crosslink density - from pourable liquids to tough elastomers with 800% elongation.
Main Applications
In construction, silicone sealants account for approximately 30% of global consumption, valued for their weatherproofing capabilities in glazing and expansion joints. The medical sector utilizes implant-grade silicones for devices like pacemaker leads due to biocompatibility. Electronics manufacturing employs silicone gels for potting sensitive components, while the automotive industry uses them in gaskets and vibration dampers. High-consistency rubber (HCR) serves in kitchenware and bakeware, with food-grade formulations meeting FDA standards.
Safety and Storage
Most silicone products are non-toxic and classified as Generally Recognized As Safe (GRAS) for food contact. However, uncured products may contain volatile siloxanes requiring proper ventilation during application. Storage recommendations include keeping containers tightly sealed to prevent moisture absorption (which can affect curing). Liquid silicones should avoid freezing, while rubber products benefit from cool (below 30°C), dark conditions to prevent premature aging. Shelf life typically ranges 6-12 months from production.
B2B Procurement Guide
Industrial buyers should specify: 1) Form (fluid, gel, rubber), 2) Cure mechanism (RTV, HTV, addition), 3) Hardness (Shore A for rubbers), 4) Viscosity (for liquids), and 5) Certifications required (FDA, USP Class VI). Bulk purchasing (500kg+) typically reduces costs by 15-25%. Consider regional suppliers for liquid products to minimize shipping costs. Technical datasheets should provide comprehensive rheological, mechanical, and thermal properties. Leading manufacturers include Dow, Wacker, and Momentive.
Related Manufacturers
- 主营：杜仲素、对位酯、丙烯酸酯、二氧化硫脲、乙基麦芽酚、饲料添加剂、油酸基硬脂酸、二苯基硅二醇
- 主营：硼酸酐、阻聚剂、己二酸、氯化锂、发泡剂、乙二醇、醋酸铜、硅酸钠、正癸醇、新癸酸、环烷油、腰果酚、十二醇、酒石酸、碳酸锂、三甘醇、油菜酸、二甘醇、碳酸钾、甲酸钠、硅酸镁、棕榈油、6-氯嘌呤、微晶石蜡、磷酸一铵
- 主营：DMF、DMAC、二丙酮醇、四甲基胍、马来酸酐、丙二醇、乙二醇、甲酸、甲醇、十二醇、柠檬酸、己二醇、甘油、四氢呋喃、碳酸丙烯酯、吐温、无水氯化钙、乙酸乙酯、氢氧化钠、二乙醇胺、司盘、过硫酸钠、氧化钙、氯化钾
- 主营：切削液、改善油、热硅脂、有机硅树脂、触点改、导热硅、测漏剂、一电子、除焊条、导热膏、三防胶、润滑油、三防漆、散热膏、标记液、擦拭布、润滑剂、清洗剂、去除剂、遮蔽剂、粘合剂、浓缩液、散热剂、润滑脂、聚氨酯、稀释剂
- 主营：uv结构胶、弹性垫圈、导电银胶、环氧导热胶
- 主营：丙乳砂浆、结构加固、道钉锚固剂、有机硅烷、环氧砂浆、氯丁胶乳水泥砂浆、不发火砂浆、防静电水泥砂浆、高强无收缩灌浆料、支座灌浆料、环氧树脂结构胶、聚合物防腐砂浆、路面修补料、耐酸胶泥、不发火细石混凝土、混凝土色差修复剂、聚合物砂浆、聚合物水泥浆、钢筋阻锈剂、混凝土抗渗剂、抗硫酸盐防腐剂、铝酸盐无机防腐砂浆、金刚砂耐磨地坪、井盖修补料
- 主营：耐火材料、酸性硅溶胶、碱性硅溶胶、硅溶胶
- 主营：农药渗透剂、纺织润滑剂、七甲基三硅氧烷、新型有机硅材料、硅油、甲基MQ硅树脂、乙烯基MQ硅树脂、农用助剂、涂料助剂、化妆品成膜剂
- 主营：二乙基、氯乙酰、甘氨酸、硫酸锆、催化剂、聚合物、苯甲醇、褪黑素、氯吡嗪、生姜油、清洗剂、丙戊酸、水合物、氨乙基、醋酸钠、碳酰肼、磺酸钠、化妆品、去除剂、紫草素、杀菌剂、孜医药、粘连剂、酮咯酸、电镀液
- 主营：处理剂、硅橡胶、压敏胶、导热材料、阻尼油、指纹液、绝缘涂料、涂料树脂、羟基硅油、防指纹油、涂料基料、二甲硅油、甲基硅油、乙烯基硅油、塑料脱模剂、塑料添加剂、高温润滑剂、流平润滑剂、电子灌封胶、塑胶改性剂、阻尼润滑油、硅树脂乳液、云母带胶水、结构控制剂、缓降阻尼脂
- 主营：第三方检测、科研服务机构、塑料制品成分分析、金属材料元素分析、涂料成分检测、橡胶制品成分检测、清洗剂成分分析、表面处理剂配方分析、油墨成分分析、科学指南针
- 主营：云母板、压敏胶、消泡剂、有机硅、三防漆、硅树脂、硅橡胶、流平剂、耐腐涂料、甲基硅油、树脂涂料、水性硅油、粉末涂料、耐候涂料、胶带胶水、披覆涂料、耐热涂料、乙烯基硅油、MQ硅树脂、电泳漆、云母板胶水
- 主营：干燥剂、稳定剂、碘化钾、固香剂、洗涤剂、柔软剂、乙酸铅、催化剂、乙酸钾、氧化锌、水杨酸钠、分析试剂、感光乳剂、香精香料、食品添加剂、磷酸二氢锰、离子化试剂、磷酸二氢钾、颜料中间体、磷酸二氢钠、电镀络合剂、水质处理剂、低泡润湿剂、水分保持剂、金属洗净剂
- 主营：纺织品、检测技术、纺织面料、覆面材料、检测中心、五氯苯酚、儿童服装、童装绳索、检测平台、服装机械、检测设备、纤维检测、检测实验室、儿童服饰安全
- 主营：双组份水性有机硅漆、无机涂料