石膏粉是以石膏為主要原料加工而成的一種粉狀材料，以下是關于它的相關知識介紹：

Gypsum powder is a powdery material processed from gypsum as the main raw material. The following is an introduction to its related knowledge:

主要成分與分類

Main components and classification

主要成分：主要成分是硫酸鈣的水合物，根據所含結晶水的不同，可分為二水石膏、半水石膏和無水石膏。

Main components: The main component is the hydrate of calcium sulfate, which can be divided into dihydrate gypsum, hemihydrate gypsum, and anhydrous gypsum according to the different crystal water contained.

常見分類

Common Categories

建筑石膏粉：通常是半水石膏，由天然二水石膏經過煅燒、磨細而成，顏色一般為白色，也有灰色或其他顏色。

Architectural gypsum powder: usually semi hydrated gypsum, made by calcining and grinding natural dihydrate gypsum, with a color generally white, but also gray or other colors.

模型石膏粉：一般選用純凈的石膏礦石或化學石膏為原料，經過特殊加工制成，具有較高的純度和細度，顆粒細小均勻，適用于制作各種模型。

Model gypsum powder: Pure gypsum ore or chemical gypsum is generally used as raw materials, which are processed through special methods to produce high purity and fineness, with small and uniform particles, suitable for making various models.

高強石膏粉：是將天然二水石膏在高溫高壓下蒸煮，脫水生成的 α 型半水石膏，具有較高的強度和硬度。

High strength gypsum powder: It is an alpha type hemihydrate gypsum produced by steaming and dehydrating natural dihydrate gypsum under high temperature and pressure, with high strength and hardness.

粉刷石膏粉：以建筑石膏為主要原料，添加多種添加劑和輔料制成，用于墻面、頂棚等的抹灰和粉刷。

Gypsum powder for plastering: made from building gypsum as the main raw material, with various additives and auxiliary materials added, used for plastering and painting walls, ceilings, etc.

特性

characteristic

凝結硬化快：在加水攪拌后，能在較短時間內凝結硬化，一般初凝結時間在 6 分鐘至 30 分鐘左右，終凝時間在 30 分鐘至 60 分鐘左右，方便快速施工。

Fast setting and hardening: After mixing with water, it can set and harden in a relatively short time. Generally, the initial setting time is about 6 minutes to 30 minutes, and the final setting time is about 30 minutes to 60 minutes, which is convenient for rapid construction.

強度較高：硬化后的石膏制品具有一定的強度，高強石膏的強度更高，其抗壓強度可達到 25MPa 至 40MPa，能滿足不同應用場景的強度要求。

High strength: The hardened gypsum products have a certain strength, and the strength of high-strength gypsum is even higher. Its compressive strength can reach 25MPa to 40MPa, which can meet the strength requirements of different application scenarios.

防火性能好：石膏粉在遇火時，二水石膏中的結晶水會蒸發，吸收大量熱量，同時在表面形成一層水蒸氣隔膜，阻止火勢蔓延，具有良好的防火性能。

Good fire resistance: When gypsum powder encounters fire, the crystalline water in dihydrate gypsum evaporates, absorbing a large amount of heat, and forming a layer of water vapor membrane on the surface to prevent the spread of fire, with good fire resistance.

保溫隔熱：石膏制品的孔隙率較高，空氣在孔隙中不易流動，使其具有較好的保溫隔熱性能，能有效降低建筑物的能耗。

Thermal insulation: Gypsum products have a high porosity, making it difficult for air to flow through the pores, which gives them good thermal insulation performance and can effectively reduce the energy consumption of buildings.

吸音性能佳：石膏板等石膏制品能夠吸收和反射聲音，減少聲音的傳播，可用于對隔音要求較高的場所，如會議室、錄音室等。

Excellent sound absorption performance: Gypsum products such as gypsum boards can absorb and reflect sound, reducing the propagation of sound, and can be used in places with high requirements for sound insulation, such as conference rooms, recording studios, etc.

裝飾性好：具有良好的可塑性，可制成各種形狀和圖案的裝飾構件，表面光滑細膩，能滿足不同的裝飾需求。

Good decorative properties: It has good plasticity and can be made into various shapes and patterns of decorative components. The surface is smooth and delicate, which can meet different decorative needs.

環保無毒：主要成分是天然石膏或化學石膏，不含有害物質，對人體和環境無害，符合環保要求。

Environmentally friendly and non-toxic: The main ingredient is natural gypsum or chemical gypsum, which does not contain harmful substances and is harmless to human health and the environment, meeting environmental protection requirements.

應用領域

application area 

建筑領域

Construction field

墻體材料：用于制作石膏板、石膏砌塊等墻體材料，具有質輕、防火、隔音、保溫等優點，可用于建筑物的內隔墻、吊頂等。

Wall material: Used for making wall materials such as gypsum board and gypsum blocks, it has the advantages of light weight, fire resistance, sound insulation, and thermal insulation, and can be used for interior partitions, ceilings, etc. of buildings.

墻面裝飾：粉刷石膏可用于墻面的找平、打底和裝飾，能使墻面平整光滑，提高墻面的美觀度。

Wall decoration: Gypsum plastering can be used for leveling, priming, and decorating walls, making them smooth and enhancing their aesthetic appeal.

地面找平和自流平：在一些地面施工中，石膏基自流平材料可用于地面的找平，具有施工速度快、平整度高的特點。

Ground leveling and self leveling: In some ground construction, gypsum based self leveling materials can be used for ground leveling, which has the characteristics of fast construction speed and high flatness.

工業領域

Industrial sector

模具制造：模型石膏粉和高強石膏粉常用于制造各種模具，如塑料模具、橡膠模具、陶瓷模具等，因其具有良好的成型性能和尺寸穩定性。

Mold manufacturing: Model gypsum powder and high-strength gypsum powder are commonly used to manufacture various molds, such as plastic molds, rubber molds, ceramic molds, etc., due to their good molding performance and dimensional stability.

造紙工業：可作為紙張的填料，能提高紙張的白度、平滑度和印刷適應性。

Paper industry: can be used as a filler for paper, which can improve the whiteness, smoothness, and printing adaptability of paper.

化工原料：是生產硫酸、硫酸銨等化工產品的重要原料。

Chemical raw materials: are important raw materials for the production of chemical products such as sulfuric acid and ammonium sulfate.

藝術領域

The arts

雕塑創作：藝術家常用石膏粉制作雕塑作品，它易于雕刻和塑形，能夠快速成型，可用于制作各種藝術造型。

Sculpture creation: Artists often use gypsum powder to create sculptures, which are easy to carve and shape, can be quickly formed, and can be used to create various artistic forms.

工藝品制作：在工藝品制作中，石膏粉可用于制作各種工藝品的模具，也可直接制作一些小型的石膏工藝品。

Craft production: In craft production, gypsum powder can be used to make molds for various crafts, and can also be directly used to make some small gypsum crafts.

儲存與使用注意事項

Storage and usage precautions

儲存：應儲存在干燥、通風良好的倉庫內，避免受潮。儲存時要注意防潮，垛底應墊高 100mm 以上，垛與垛之間應保持適當的距離，以便通風。

Storage: It should be stored in a dry and well ventilated warehouse to avoid moisture. When storing, attention should be paid to moisture prevention. The bottom of the stack should be raised by more than 100mm, and an appropriate distance should be maintained between stacks for ventilation.

使用

use

施工環境：施工環境溫度應在 5℃至 35℃之間，避免在高溫、低溫或潮濕的環境下施工，以免影響石膏粉的性能。

Construction environment: The temperature of the construction environment should be between 5 ℃ and 35 ℃, avoiding construction in high, low, or humid environments to avoid affecting the performance of gypsum powder.

攪拌均勻：在使用時，應按照規定的水灰比加水攪拌，攪拌要均勻，避免出現結塊現象。

Mixing evenly: When using, water should be added according to the specified water cement ratio and mixed evenly to avoid clumping.

注意凝結時間：由于石膏粉凝結硬化快，在攪拌后應盡快使用，避免因凝結而造成浪費。

Pay attention to setting time: Due to the fast setting and hardening of gypsum powder, it should be used as soon as possible after mixing to avoid waste caused by setting.

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