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添加剂在腻子粉中起什么作用?

来源: 日期:2021-08-31 发布人:juyehe

腻子粉中的小秘密,腻子粉中的胶粉和添加剂决定了腻子粉好不好施工,抗裂吗,防水吗,所以今天就来简单介绍一下这些添加剂和它的作用。

The little secret of putty powder is that the rubber powder and additives in putty powder determine whether the putty powder is good for construction, crack resistance and waterproof, so let's briefly introduce these additives and their functions today.
纤维素醚是腻子粉的主要添加剂胶粉 纤维素醚用作增稠剂和保水剂。虽然添加比例非常低(0.02%-0.7%),但作用非常重要。腻子粉中使用的纤维素醚主要是甲基羟乙基纤维素醚(MHEC)和甲基羟丙基纤维素醚。简称MC,MC特性:粘着性和施工性这是两个互相影响的因素;保水性,避免水分的快速蒸发,使得砂浆层的厚度能显著降低。
Cellulose ether is the main additive of putty powder. Rubber powder cellulose ether is used as thickener and water retaining agent. Although the addition ratio is very low (0.02% - 0.7%), it plays a very important role. The cellulose ethers used in putty powder are mainly methyl hydroxyethyl cellulose ether (MHEC) and methyl hydroxypropyl cellulose ether. MC for short, MC characteristics: adhesion and constructability, which are two factors affecting each other; Water retention, avoid rapid evaporation of water, and significantly reduce the thickness of mortar layer.
1、淀粉醚:能增加砂浆稠度。
1. Starch ether: it can increase the consistency of mortar.
2、引气剂:通过物理作用在砂浆中引入微气泡,降低砂浆密度,施工性更好。主要是脂肪磺酸钠盐和硫酸钠盐加入比例为0.01%-0.06%。
2. Air entraining agent: micro bubbles are introduced into the mortar through physical action to reduce the mortar density and improve the workability. It is mainly sodium fatty sulfonate and sodium sulfate, with the addition ratio of 0.01% - 0.06%.
3、保凝剂:用它来获得预期的凝结时间。常用甲酸钙,加入比例为0.5%-2.5%。
3. Coagulant: use it to obtain the expected setting time. Calcium formate is commonly used, and the addition ratio is 0.5% - 2.5%.
4、缓凝剂:主要应用于石膏灰浆和石膏基填缝料中。主要是果酸盐类,通常在0.05%-0.25%。
4. Retarder: mainly used in gypsum mortar and gypsum based joint filler. Mainly fructates, usually 0.05% - 0.25%.
5、疏水剂(防水剂:可防止水渗入到砂浆中,同时砂浆仍能保持敞开状态以进行水蒸气扩散。主要用具有疏水性的聚合物可再分散粉末,特点是在多年后也不会被雨水从灰浆中冲洗掉,所以具有使用寿命明显延长的优点,并提高了硬化砂浆与基材之间的粘接力。
5. Hydrophobic agent (waterproof agent): it can prevent water from penetrating into the mortar, and the mortar can still remain open for water vapor diffusion. It mainly uses hydrophobic polymer redispersible powder, which is characterized in that it will not be washed away from the mortar by rainwater after many years, so it has the advantage of significantly prolonging the service life and improving the adhesive force between the hardened mortar and the substrate.
6、超塑化剂:主要用在有较高要求的自流平干粉砂浆中。
6. Superplasticizer: mainly used in self leveling dry powder mortar with high requirements.
7、纤维分为长纤维和短纤维。长纤维主要用于增强和加固;短纤维用来影响改善砂浆的性能和需水量。
7. Fibers are divided into long fibers and short fibers. Long fiber is mainly used for reinforcement and reinforcement; Short fibers are used to improve the performance and water demand of mortar.
8、消泡剂:主要用来降低砂浆中的空气含量。主要用无机载体上的碳氢化合物、聚乙二醇等其他的添加剂还有颜料、增稠剂、增塑剂等。
8. Defoamer: mainly used to reduce the air content in mortar. It mainly uses hydrocarbons, polyethylene glycol and other additives on inorganic carriers, as well as pigments, thickeners, plasticizers, etc.
9、触变润滑剂:改善砂浆触变性和润滑性,延长施工开放时间以及抗流挂性,常规产品为LBCB-1触变润滑剂用量0.3-0.5%。
9. Thixotropic lubricant: improve the thixotropy and lubricity of mortar, prolong the construction opening time and sagging resistance. The conventional product is lbcb-1, and the amount of thixotropic lubricant is 0.3-0.5%.