1、配料不同。外墻膩子粉和內墻膩子粉的主要區別就在于兩者之間的配料不同，由此造成的耐水性與硬度之間的區別。內墻膩子粉主要是以雙飛粉(大白粉)為主要原料，而外墻膩子粉則是以白水泥為主要原料，因此外墻膩子粉的耐水性和硬度比之內墻膩子粉來說要強上不少。

1. Different ingredients. The main difference between exterior wall putty powder and interior wall putty powder lies in the different ingredients between the two, resulting in differences in water resistance and hardness. The main raw material for interior wall putty powder is Shuangfei powder (large white powder), while the main raw material for exterior wall putty powder is white cement. Therefore, the water resistance and hardness of exterior wall putty powder are much stronger than those of interior wall putty powder.

2、性能不同。外墻膩子粉是以膠粉材料為基料配以黏結材料及其他助劑精細加工而成。其突出的特點為黏結強度高耐水性、耐堿性、施工性能好。它作為室外建筑物表面找平材料可一勞永逸。避免了開裂、起泡、粉化及脫落等現象的發生。內墻專用膩子粉具有鞏固性粘接強度、環保等特色。內墻膩子比較細膩。

2. Different performance. Exterior wall putty powder is finely processed using adhesive powder material as the base material, combined with bonding materials and other additives. Its outstanding characteristics are high bonding strength, water resistance, alkali resistance, and good construction performance. It can be used as a surface leveling material for outdoor buildings once and for all. Avoiding the occurrence of cracking, foaming, pulverization, and peeling. The special putty powder for interior walls has characteristics such as consolidating adhesive strength and environmental protection. The inner wall putty is relatively delicate.

3、環保性能。在環保方面，外墻膩子粉和內墻膩子粉兩者間也依然沒有太大區別，環保性能基本是相同的。由于外墻膩子要抵抗風吹日曬所以粘性大、強度高，但是環保指數就稍低。反之內墻膩子就比較健康環保，所以內墻不外用，外墻不內用。

3. Environmental performance. In terms of environmental protection, there is still not much difference between exterior wall putty powder and interior wall putty powder, and their environmental performance is basically the same. Due to its resistance to wind and sun, the exterior wall putty has high viscosity and strength, but its environmental protection index is slightly lower. On the contrary, interior wall putty is more healthy and environmentally friendly, so interior walls are not used externally and exterior walls are not used internally.

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