膩子粉和石膏粉是裝修中常用的兩種基礎材料，雖然外觀相似，但在成分、用途、施工特性等方面存在顯著差異。以下是兩者的主要區別：

　　Putty powder and gypsum powder are two commonly used basic materials in decoration. Although they have similar appearances, there are significant differences in composition, usage, and construction characteristics. The following are the main differences between the two:

　　1. 成分與材料特性

　　1. Composition and material properties

　　石膏粉：主要成分為硫酸鈣（CaSO?），由天然石膏煅燒后制成，顆粒較粗糙，呈灰白色或灰黃色，光澤度較低。其特點是硬化速度快、強度高，但不易打磨，通常需要添加膠水或其他材料混合使用。

　　Gypsum powder: The main component is calcium sulfate (CaSO?), which is made by calcining natural gypsum. The particles are rough, gray white or gray yellow, and the glossiness is low. Its characteristics are fast hardening speed and high strength, but it is not easy to polish and usually requires the addition of glue or other materials for mixing.

　　膩子粉：主要成分是滑石粉（碳酸鈣）和膠水，顆粒細膩，顏色雪白，光澤度較高。硬化速度慢，干燥后質地較軟，易于打磨，可直接兌水施工。

　　Putty powder: The main components are talcum powder (calcium carbonate) and glue, with fine particles, snow-white color, and high glossiness. Slow hardening speed, soft texture after drying, easy to polish, can be directly mixed with water for construction.

　　2. 用途與功能

　　2. Purpose and Function

　　石膏粉：主要用于基層處理，如填補孔洞、嵌縫、陰陽角修直以及墻面粗找平（厚度可達25mm）。因其硬度高，適合修復結構性缺陷，但需在后續使用膩子粉精找平。

　　Gypsum powder: mainly used for base treatment, such as filling holes, jointing, straightening internal and external corners, and rough leveling of walls (thickness up to 25mm). Due to its high hardness, it is suitable for repairing structural defects, but it needs to be leveled with putty powder in the future.

　　膩子粉：用于墻面精找平，為刷乳膠漆或貼壁紙提供光滑基面。其修補厚度一般不超過3mm，否則易開裂。適用于表面細膩處理，優化裝飾材料的附著力。

　　Putty powder: used for precise leveling of walls, providing a smooth base for applying latex paint or wallpaper. The repair thickness is generally not more than 3mm, otherwise it is prone to cracking. Suitable for surface refinement and optimizing the adhesion of decorative materials.

　　3. 施工特性

　　3. Construction characteristics

　　石膏粉：需控制加水量和攪拌速度，硬化快（約60分鐘內需用完），施工難度較高，適合有經驗的工人操作。常用于打點沖筋找平等粗找平工藝。

　　Gypsum powder: The amount of water added and mixing speed need to be controlled, and it hardens quickly (about 60 minutes to use up). The construction difficulty is high, and it is suitable for experienced workers to operate. Commonly used in the process of punching, leveling, leveling, and leveling.

　　膩子粉：施工簡便，直接兌水攪拌即可批刮，干燥后可輕松打磨。通常需分層施工，每遍厚度不超過1.5mm，總厚度控制在3mm以內。

　　Putty powder: easy to apply, can be directly mixed with water and scraped, and can be easily polished after drying. Usually, layered construction is required, with each layer having a thickness not exceeding 1.5mm and the total thickness controlled within 3mm.

　　4. 環保性與價格

　　4. Environmental friendliness and price

　　石膏粉：因需添加膠水，可能含甲醛，環保性較差；價格相對較低。

　　Gypsum powder: Due to the need to add glue, it may contain formaldehyde and has poor environmental friendliness; The price is relatively low.

　　膩子粉：多為水性材料，環保性較好（尤其是耐水膩子），但價格較高。

　　Putty powder: mostly water-based materials with good environmental friendliness (especially water-resistant putty), but the price is relatively high.

　　5. 其他差異

　　5. Other differences

　　手感：石膏粉粗糙，膩子粉細膩。

　　Texture: Gypsum powder is rough, putty powder is delicate.

　　顏色測試：石膏粉刷墻后發黃，膩子粉刷墻后保持白色。

　　Color test: Gypsum painted wall turns yellow, putty painted wall remains white.

　　硬化表現：石膏粉兌水后迅速變硬，膩子粉不易硬化。

　　Hardening performance: Gypsum powder quickly hardens after being mixed with water, while putty powder is not easily hardened.

　　總結

　　summary

　　石膏粉和膩子粉在裝修中需配合使用：石膏粉用于底層修復和粗找平，膩子粉用于表層精找平。兩者不可互相替代，正確的施工順序是先石膏后膩子，以確保墻面平整度和裝飾效果。

　　Gypsum powder and putty powder need to be used together in decoration: gypsum powder is used for bottom repair and rough leveling, while putty powder is used for surface finishing. The two cannot be replaced by each other. The correct construction sequence is gypsum first and then putty to ensure the flatness and decorative effect of the wall.

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