Overview
Calcium silicate is an inorganic compound composed of calcium, silicon, and oxygen, commonly occurring as wollastonite in nature. Industrially, it is synthesized through reactions between calcium oxide and silica at high temperatures. The material is valued for its thermal stability, chemical resistance, and mechanical strength. In B2B contexts, calcium silicate is supplied as a fine powder or fibrous product, with grades tailored for specific applications like insulation or construction. Its synthetic form often outperforms natural wollastonite in consistency and purity, making it preferred for precision industrial uses.
Physical and Chemical Properties
Calcium silicate exhibits a high melting point (1540°C) and low thermal conductivity, making it ideal for high-temperature insulation. Its insolubility in water and resistance to most chemicals ensure durability in harsh environments. The fibrous form provides reinforcing properties in composites. The material’s density (~2.9 g/cm³) and refractive index (1.63) are key for applications requiring lightweight yet durable solutions. Its pH in aqueous suspension is mildly alkaline, which contributes to corrosion inhibition when used as a coating additive.
Main Applications
In construction, calcium silicate serves as a fireproofing agent in boards and panels, meeting stringent safety standards. Its insulation properties are exploited in industrial pipes, furnaces, and aerospace components. The automotive industry uses it in brake pads and clutch facings for heat resistance. As a filler, it enhances the mechanical properties of plastics, rubber, and paints. In food and pharmaceuticals, high-purity grades act as anti-caking agents or excipients due to their inertness and low moisture absorption.
Safety and Storage
While calcium silicate is non-toxic, dust generation during handling requires respiratory protection (NIOSH N95 masks) and eye goggles. Prolonged skin contact may cause dryness; gloves are recommended. Storage areas should be moisture-free to prevent clumping. Spills should be cleaned with dry methods (avoid water). The material is non-flammable and does not emit hazardous fumes under normal conditions. For large-scale storage, use sealed containers or silos with desiccants to maintain product integrity.
B2B Procurement Guide
Buyers should specify technical parameters such as purity (typically 95–99%), particle size distribution (e.g., 5–50 microns for fillers), and bulk density. Fibrous grades command higher prices due to specialized processing. MOQs for bulk orders range from 1 to 20 metric tons. Reliable suppliers provide certificates of analysis (CoA) for trace elements like iron and alumina. Spot prices fluctuate with silica and lime feedstock costs. For insulation applications, verify thermal conductivity ratings (commonly 0.05–0.10 W/m·K at 25°C).
Related Manufacturers
- 主营：矿棉板、轻钢龙骨、穿孔吸音板、硅酸钙板、石膏板、吸音板、烤漆龙骨、吊顶隔墙、吊顶天花板、矿棉装饰吊顶、岩棉、38龙骨
- 主营：注射级海藻糖、苯甲醇、三乙醇胺、硅酸钙、甜菊糖苷、注射级甘露醇、牛磺酸、醋酸钠、木糖醇、黄原胶、甘露醇、大豆油、薄荷脑、注射级木糖醇、二甲硅油、卡波姆、枸橼酸、磷酸氢二钠、磷酸氢二钾、明胶、十六醇、十八醇、聚维酮k30、注射级甘油
- 主营：低聚果糖、低聚木糖、甘露寡糖、硅酸钙厂家、菊粉、麦芽糖醇、木糖醇、纽甜、乳糖、乳糖醇、三氯蔗糖、聚葡萄糖、索马甜、瓜尔豆胶、果胶、海藻酸丙二醇酯、海藻酸钠、黄原胶、卡拉胶、可得然胶、大豆多糖、魔芋粉、塔拉胶、琼脂、沙蒿籽胶、明胶
- 主营：醋酸钴、硝酸铜、氯化钴、氟硅酸钠、氯化亚锡、三氯化铁、氯化铁、氧化钴、硫化钠、丙酸钠
- 主营：穿孔板、矿棉板、石膏板、穿孔硅酸钙板、纤维增强硅酸钙板、硅酸钙板、矿棉吸音板
- 主营：防火板、阻火包、阻火模块、硅酸钙板、防火泥、电缆防火涂料、钢结构防火涂料、防火密封胶、水泥压力板
- 主营：聚氨酯喷涂料、橡塑板、橡塑管、硅酸铝针刺毯、硅酸铝管、硅酸钙管、硅酸铝板、玻璃棉保温管、聚氨酯喷涂施工、聚氨酯胶、聚氨酯保温管、聚氨酯管壳、聚氨酯板、岩棉管
- 主营：硬脂酸镁、药用聚乙二醇、泊洛沙姆188、硅酸钙、泊洛沙姆407、聚乙二醇—15羟基硬脂酸酯、巴斯夫进口蓖麻油聚烃氧酯EL35、巴斯夫聚氧乙烯氢化蓖麻油RH40、巴斯夫进口Soluplus、微晶纤维素、聚维酮k30、聚维酮k90、羧甲淀粉钠、低取代羟丙纤维素、羟丙纤维素、羟丙甲纤维素、乳糖、麦芽糊精、交联聚维酮、交联羧甲纤维素钠、海藻糖、甘羟铝、聚丙烯酸钠、卡波姆、亚什兰进口羟乙基纤维素
- 主营：甘油、丙二醇、聚山梨酯80、硅酸钙、二甲硅油、二甲基亚砜、苯甲酸苄酯、苯甲醇、泊洛沙姆、聚丙烯酸钠、海藻糖、大豆磷脂、黄原胶、羧甲基纤维素钠、依地酸二钠、海藻酸钠、醋酸氯己定、葡萄糖酸氯己定、聚乙烯醇、聚维酮k30、交联聚维酮、交联羧甲基纤维素钠、RH40
- 主营：全氟三丁胺、二苄叉山梨醇、六氟丙烯二聚体、硅酸钙、六氟环氧丙烷二聚体、异丙醇铝、纳米勃姆石、二异戊基硫醚、隐色结晶紫、邻菲罗啉
- 主营：白炭黑、白僵菌、eva乳液、硅酸钙市场行情、棕榈蜡、pvc发泡剂、聚碳酸酯、聚乙烯蜡、苯甲酸铵、t-31固化剂
- 主营：锚固剂、硫酸铝、硫酸铜、硅酸钙建筑材料塑料、切削液、氧化铜、溴化钠、大苏打、导热油、腐植酸、净洗剂、活性炭、水杨酸、硫酸锰、漂白粉、玻璃粉、茶皂素、丁酸钠、磷酸钙、甲酸钠、硬脂酸、消泡剂、酵母硒、磷酸铁、铵明矾、硫酸钡
- 主营：固体酸催化剂、重组胶原蛋白、硅油、硅酸钙、特种硅油、聚硅氮烷、硼酸铝晶须、碳化硅晶须、t-BAMBP萃取剂、全氟三丁胺
- 主营：面条机、搓丝机、和面机、硅酸钙板生产线、米线机、水加热、牛筋面机、擀面皮机、棒辣片机、湿浆米粉、电动面粉、电动自熟、机冷面机、洗面和面、杂粮冷面机、酿皮洗面机、自熟粉条机、自熟年糕机、面粉搅拌机、商用米粉机、电动拌面机、电动洗面机、凉皮洗面机、饵丝饵块机、玉米面条机、荞麦面条机
- 主营：海藻酸钠、乳酸链球菌素、卡拉胶、硅酸钙、温轮胶、黄原胶、苯丙氨酸、亮氨酸、苏氨酸、谷氨酸、蛋氨酸、牛磺酸、谷氨酰胺、半胱氨酸、酪蛋白酸钠、柑橘黄、羧甲基纤维素钠、聚丙烯酸钠、柠檬酸、氨基丁酸、胍基乙酸、定优胶、L-硒-甲基硒代半胱、干酪素