一、材质分类：按需选择的 “功能细分”

1、 Material classification: "Functional subdivision" selected as needed

济南石膏粉根据纯度和用途，主要分为三大类：

Jinan gypsum powder is mainly divided into three categories based on purity and usage:

建筑用石膏粉

Gypsum powder for construction

纯度约 80%-90%，含有少量杂质，凝固速度中等，硬度适中，适合墙面修补、石膏板生产等对精度要求不高的场景。包装上常标注 “建筑专用” 或 “装修用”，价格较为亲民，是家庭和工地的常用款。

Purity of about 80% -90%, containing a small amount of impurities, moderate solidification speed, moderate hardness, suitable for scenarios with low precision requirements such as wall repair and gypsum board production. The packaging is often labeled as "for construction purposes" or "for decoration purposes", and the price is relatively affordable, making it a common choice for households and construction sites.

高强石膏粉

High strength gypsum powder

纯度 95% 以上，经过特殊煅烧工艺，凝固后硬度更高（可达莫氏硬度 3-4 级），适合制作模具、雕塑等需要承重或精细造型的场景。这种石膏粉的颗粒更细，加水后流动性好，能填充模具的细微凹槽，成品表面光滑无气孔。

Purity of over 95%, after special calcination process, the hardness is higher after solidification (up to 3-4 levels of Mohs hardness), suitable for making molds, sculptures and other scenes that require load-bearing or fine shaping. This gypsum powder has finer particles, good flowability after adding water, and can fill the fine grooves of the mold. The finished product surface is smooth and free of pores.

特种石膏粉

Special gypsum powder

针对特殊需求添加外加剂，如防水石膏粉（用于卫生间墙面，减少水汽侵蚀）、快干石膏粉（10 分钟内凝固，适合紧急修补）、食品级石膏粉（用于豆腐制作的凝固剂，纯度和安全性要求极高）。

Add additives for special needs, such as waterproof gypsum powder (used for bathroom walls to reduce water vapor erosion), fast drying gypsum powder (solidifies within 10 minutes, suitable for emergency repairs), and food grade gypsum powder (used as a coagulant for tofu production, with extremely high purity and safety requirements).

二、选购石膏粉的实用建议

2、 Practical Suggestions for Choosing Gypsum Powder

1. 根据用途选 “类型”

1. Select "type" based on the purpose

墙面修补、石膏线安装：选普通建筑用石膏粉，凝固速度适中，成本低。

Wall repair and gypsum line installation: Choose ordinary building gypsum powder with moderate solidification speed and low cost.

模具制作、雕塑创作：选高强石膏粉，硬度高、表面细腻，避免成品开裂或粗糙。

Mold making and sculpture creation: Choose high-strength gypsum powder with high hardness and delicate surface to avoid cracking or roughness of the finished product.

潮湿环境使用：选标注 “防水” 或 “防潮” 的特种石膏粉，防止凝固后吸水软化。

Use in humid environments: Select special gypsum powder labeled as "waterproof" or "moisture-proof" to prevent it from absorbing water and softening after solidification.

2. 关注 “纯度与杂质”

2. Pay attention to "purity and impurities"

优质石膏粉呈均匀的白色，无明显泛黄或灰斑，杂质少（如黑色颗粒、结块）。取少量粉末溶于水，静置后沉淀少，说明纯度高，适合对强度和细腻度要求高的场景。

High quality gypsum powder is uniformly white, without obvious yellowing or gray spots, and has few impurities (such as black particles and clumps). Dissolve a small amount of powder in water and let it settle for a while, indicating high purity and suitability for scenarios that require high strength and fineness.

建筑用石膏粉允许少量杂质，但结块严重、有刺鼻气味的产品可能煅烧工艺不佳，凝固后强度不足，需避免购买。

Gypsum powder for construction is allowed to contain a small amount of impurities, but products with severe agglomeration and pungent odor may have poor calcination process and insufficient strength after solidification, and should be avoided from purchase.

3. 查看 “包装与标识”

3. View "Packaging and Labeling"

正规产品包装上应标注主要成分、用途、凝固时间、保质期（通常 6-12 个月）。注意生产日期，超过保质期的石膏粉可能凝固速度变慢或强度下降。

Regular product packaging should indicate the main ingredients, purpose, solidification time, and shelf life (usually 6-12 months). Pay attention to the production date, gypsum powder that has exceeded its shelf life may have a slower solidification rate or a decrease in strength.

工业用或特种石膏粉需确认是否符合相关标准（如食品级需有卫生许可标识），避免误用带来安全隐患。

Industrial or special gypsum powder needs to be confirmed to comply with relevant standards (such as food grade requiring hygiene license labeling) to avoid potential safety hazards caused by misuse.

本文由济南石膏粉友情奉献.更多有关的知识请点击:http://www.jnfhjc.com我们将会对您提出的疑问进行详细的解答，欢迎您登录网站留言.

This article is dedicated to friendship For more information, please click: We will provide detailed answers to your questions. You are welcome to log in to our website and leave a message