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添加劑在膩子粉中起什么作用？

來源：http://www.wavc.cn 日期：2021-08-31 發布人：

膩子粉中的小秘密，膩子粉中的膠粉和添加劑決定了膩子粉好不好施工，抗裂嗎，防水嗎，所以今天就來簡單介紹一下這些添加劑和它的作用。

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.

纖維素醚是膩子粉的主要添加劑膠粉纖維素醚用作增稠劑和保水劑。雖然添加比例非常低（0.02%-0.7%），但作用非常重要。膩子粉中使用的纖維素醚主要是甲基羥乙基纖維素醚（MHEC）和甲基羥丙基纖維素醚。簡稱MC，MC特性：粘著性和施工性這是兩個互相影響的因素；保水性，避免水分的快速蒸發，使得砂漿層的厚度能顯著降低。

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：能增加砂漿稠度。

1. Starch ether: it can increase the consistency of mortar.

2、引氣劑：通過物理作用在砂漿中引入微氣泡，降低砂漿密度，施工性更好。主要是脂肪磺酸鈉鹽和硫酸鈉鹽加入比例為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、保凝劑：用它來獲得預期的凝結時間。常用甲酸鈣，加入比例為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、緩凝劑：主要應用于石膏灰漿和石膏基填縫料中。主要是果酸鹽類，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、疏水劑（防水劑：可防止水滲入到砂漿中，同時砂漿仍能保持敞開狀態以進行水蒸氣擴散。主要用具有疏水性的聚合物可再分散粉末，特點是在多年后也不會被雨水從灰漿中沖洗掉，所以具有使用壽命明顯延長的優點，并提高了硬化砂漿與基材之間的粘接力。

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、超塑化劑：主要用在有較高要求的自流平干粉砂漿中。

6. Superplasticizer: mainly used in self leveling dry powder mortar with high requirements.

7、纖維分為長纖維和短纖維。長纖維主要用于增強和加固；短纖維用來影響改善砂漿的性能和需水量。

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、消泡劑：主要用來降低砂漿中的空氣含量。主要用無機載體上的碳氫化合物、聚乙二醇等其他的添加劑還有顏料、增稠劑、增塑劑等。

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、觸變潤滑劑：改善砂漿觸變性和潤滑性，延長施工開放時間以及抗流掛性，常規產品為LBCB-1觸變潤滑劑用量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%.

上一篇：解析多樣石膏粉的不同應用
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