In the lime calcium based water-resistant putty, as a lime finishing product, Ca (OH) 2 in lime calcium powder (the main component is the mixture of Ca (OH) 2, Cao and a small amount of CaCO3) reacts with CO2 in the air to produce crystalline calcium carbonate. In the process of calcium carbonate crystal formation, a closely intertwined crystal network is formed, so as to improve the strength of the slurry. In addition, the solid volume of calcium carbonate is slightly larger than that of calcium hydroxide, so the hardened slurry becomes stronger.

濟南膩子粉廠家

Jinan putty powder manufacturer

由以上可以看出灰鈣基耐水膩子，質(zhì)量好壞就是灰鈣質(zhì)量一定好，氫氧化鈣含量達到要求，氧化鈣含量越低越穩(wěn)定，膩子不反粘反稠變硬沉淀，不開裂脫粉。氧化鈣含量高會直接影響纖維素保水直接影響纖維素的添加量，使做出來的膩子粉反稠，灰鈣中氧化鈣含量高說明生產(chǎn)灰鈣時生石灰沒有熟透，其他重金屬離子含量越低越好，避免收光時表面發(fā)黑。

It can be seen from the above that the quality of gray calcium based water-resistant putty is that the quality of gray calcium must be good. The content of calcium hydroxide meets the requirements. The lower the content of calcium oxide, the more stable it is. The putty does not anti stick, thicken, harden and precipitate, and does not crack and de powder. The high content of calcium oxide will directly affect the water retention of cellulose, directly affect the addition amount of cellulose, and thicken the putty powder. The high content of calcium oxide in lime calcium indicates that the quicklime is not mature when producing lime calcium, and the lower the content of other heavy metal ions, the better, so as to avoid blackening the surface during light receiving.

其次重鈣粉（雙飛粉），碳酸鈣含量80%以上，其他伴生礦粉和雜質(zhì)少，白度達到90%以上和細度325目以上，含有鋁離子和其他活性礦物，甚至重鈣廠往里面有生石灰，容易和纖維素產(chǎn)生凝聚，使纖維素保水失效，膩子膏體變稠變硬，表面粗糙，沒有細膩光滑油亮的感覺。

Secondly, heavy calcium powder (Shuangfei powder) contains more than 80% calcium carbonate, less other associated mineral powder and impurities, with whiteness of more than 90% and fineness of more than 325 mesh. It contains aluminum ions and other active minerals. Even there is quicklime in the heavy calcium plant, which is easy to agglomerate with cellulose, resulting in failure of water retention of fibronectin, thickening and hardening of putty paste and rough surface, No delicate, smooth and shiny feeling.

其次如果纖維素質(zhì)量不好也會導(dǎo)致膩子粉反稠假凝，纖維素引起的膩子粉假凝反稠是因為纖維素中的一些成分發(fā)生反應(yīng)所導(dǎo)致，和陽光直射，溫度沒有關(guān)系，并不是說用有問題的纖維素做出的膩子粉放在陽光下就反稠放在陰涼處就不會反稠，而是只要加水調(diào)成膏狀后過段時間就會變稠假凝。請記清只是變稠假凝，如果膩子膏體變得又干又澀沒有多數(shù)是生產(chǎn)灰鈣時灰鈣沒有熟透所致，偶爾也和重鈣中的雜質(zhì)有關(guān)。

Secondly, if the quality of cellulose is poor, it will also lead to the anti thickening and anti thickening of putty powder. The pseudo thickening and anti thickening of putty powder caused by cellulose is caused by the reaction of some components in cellulose, which has nothing to do with direct sunlight and temperature. It does not mean that the greasy powder made of problematic cellulose will be anti thickened in the sun and will not be anti thickened in the shade, But as long as you add water to make it into a paste, it will thicken and solidify after a period of time. Please remember that it is only thickening and false coagulation. If the putty paste becomes dry and astringent, it is not mostly caused by the lack of maturity of gray calcium during the production of gray calcium, and occasionally related to the impurities in heavy calcium.