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发明公开
CN109534348A 一种抗开裂纳米二氧化硅溶胶及其制备方法 无效 - 撤回

一种抗开裂纳米二氧化硅溶胶及其制备方法
摘要：
本发明公开了一种抗开裂纳米二氧化硅溶胶，是以工业硅粉为主要原料，KOH作为催化剂反应得到的纳米级二氧化硅溶胶，并公开了其制备方法。本发明提供的一种抗开裂纳米二氧化硅溶胶，能够有效善其成膜时收缩较大，涂膜易龟裂的问题，并且所制得的纳米二氧化硅溶胶具有透光性好、硬度大等特点。本发明的纳米二氧化硅溶胶相较于其他同类二氧化硅溶胶结构力学性能提高，被广泛应用于保温抗开裂涂料领域。本发明的制备方法制备条件较温和，转化率高，产物稳定性好。
摘要（英）：

The invention discloses a cracking resistant nano-silica sol and a preparation method thereof. The cracking resistant nano-silica sol is nanoscale silica sol obtained by reaction of industrial siliconpowder as the main raw material and KOH as a catalyst. The cracking resistant nano-silica sol provided by the invention can effectively improve the problems of large shrinkage during film formation and easy cracking of the coating film, and the prepared nano-silica sol has the characteristics of good light transmission, high hardness and the like. Compared with other similar silica sol, the nano-silica sol provided by the invention has improved structural mechanical properties, and is widely applied to the field of heat preservation and cracking resistant paint. The preparation method provided by the invention has mild preparation conditions and high conversion rate, and the product has good stability.

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