醫院用的石膏粉與普通工業或建筑用石膏粉存在顯著差異，其特殊性主要體現在醫療適用性、性能穩定性和安全保障性等方面，這些特性是滿足臨床治療需求的關鍵。

　　The gypsum powder used in hospitals has significant differences from ordinary industrial or construction gypsum powder, and its special characteristics are mainly reflected in medical applicability, performance stability, and safety assurance. These characteristics are key to meeting clinical treatment needs.

　　從成分純度來看，醫院用石膏粉有著極高的純凈度要求。它以天然石膏為原料，經過嚴格的篩選、煅燒和研磨工藝，去除了原料中含有的雜質，如泥沙、重金屬、微生物等。高純度的成分能減少對人體組織的刺激，降低傷口感染的風險，尤其適用于直接接觸皮膚或創口的固定場景，這是普通石膏粉難以達到的標準。

　　From the perspective of ingredient purity, hospital gypsum powder has extremely high purity requirements. It uses natural gypsum as raw material and undergoes strict screening, calcination, and grinding processes to remove impurities such as sediment, heavy metals, microorganisms, etc. contained in the raw material. High purity ingredients can reduce irritation to human tissues and lower the risk of wound infection, especially suitable for fixed scenarios where there is direct contact with the skin or wounds, which is a standard that ordinary gypsum powder cannot meet.

　　凝固時間的可控性是其重要特性之一。醫院用石膏粉在與水混合后，凝固時間需在臨床操作的合理范圍內，一般可通過調整石膏粉的顆粒大小、煅燒溫度等工藝參數進行精確控制。例如，用于骨折臨時固定的石膏粉，凝固時間通常控制在 5-15 分鐘，既能保證醫生有足夠時間塑形，又能快速硬化形成穩固支撐；而用于制作模具的石膏粉，可能需要更長的凝固時間以確保塑形精度。這種可控性避免了因凝固過快影響操作或過慢延誤治療的情況。

　　The controllability of solidification time is one of its important characteristics. After mixing gypsum powder with water in hospitals, the solidification time should be within a reasonable range of clinical operation. Generally, precise control can be achieved by adjusting process parameters such as particle size and calcination temperature of gypsum powder. For example, the setting time of gypsum powder used for temporary fixation of fractures is usually controlled within 5-15 minutes, which can ensure that doctors have enough time to shape and quickly harden to form stable support; The gypsum powder used for making molds may require a longer solidification time to ensure molding accuracy. This controllability avoids situations where too fast solidification affects the operation or delays treatment.

　　凝固后的強度與透氣性平衡是其核心優勢。醫院用石膏粉凝固后需具備足夠的強度，能為骨折部位提供穩定的支撐，防止斷骨移位，促進骨骼愈合。同時，它還需具備一定的透氣性，允許皮膚正常呼吸和汗液蒸發，減少因長期包裹導致的皮膚潮濕、瘙癢甚至感染。這種強度與透氣性的平衡，是通過優化石膏晶體結構實現的，普通石膏粉往往難以兼顧兩者。

　　The balance between strength and breathability after solidification is its core advantage. After the solidification of gypsum powder in hospitals, it needs to have sufficient strength to provide stable support for the fracture site, prevent bone displacement, and promote bone healing. At the same time, it also needs to have a certain degree of breathability, allowing the skin to breathe normally and sweat to evaporate, reducing skin moisture, itching, and even infection caused by long-term wrapping. The balance between strength and breathability is achieved by optimizing the crystal structure of gypsum, which is often difficult to balance with ordinary gypsum powder.

　　無菌性是醫院用石膏粉的基本要求。在生產過程中，石膏粉需經過嚴格的滅菌處理，如高溫滅菌、輻射滅菌等，確保產品不含致病菌。滅菌后的石膏粉會采用無菌包裝，防止運輸和儲存過程中的二次污染。這種無菌特性對于開放性骨折、術后傷口固定等場景至關重要，能直接降低交叉感染的風險，保障患者的治療安全。

　　Sterility is a basic requirement for hospital gypsum powder. During the production process, gypsum powder needs to undergo strict sterilization treatment, such as high-temperature sterilization, radiation sterilization, etc., to ensure that the product does not contain pathogenic bacteria. The sterilized gypsum powder will be packaged sterile to prevent secondary contamination during transportation and storage. This aseptic property is crucial for scenarios such as open fractures and postoperative wound fixation, as it can directly reduce the risk of cross infection and ensure the safety of patient treatment.

　　可塑性與貼合度也是其突出特點。醫院用石膏粉在凝固前具有良好的可塑性，醫生可根據患者肢體的形態進行精確塑形，使石膏固定更加貼合肢體輪廓，提高患者的舒適度，同時避免因固定不牢導致的治療效果不佳。例如，在關節部位的固定中，石膏粉能隨肢體曲線塑形，既保證固定效果，又減少對關節周圍組織的壓迫。

　　Plasticity and fit are also prominent features of it. Gypsum powder used in hospitals has good plasticity before solidification. Doctors can accurately shape the patient's limbs according to their shape, making the plaster fixation more in line with the contour of the limbs, improving the patient's comfort, and avoiding poor treatment results caused by weak fixation. For example, in the fixation of joint parts, gypsum powder can shape the body according to the limb curve, ensuring the fixation effect and reducing the compression on the surrounding tissues of the joint.

　　此外，醫院用石膏粉還具有良好的耐水性和穩定性。在患者進行局部清潔或接觸少量水分時，凝固后的石膏不易軟化或潰散，能維持固定形態；同時，它在常溫下化學性質穩定，不易與皮膚分泌物、藥物等發生反應，減少對皮膚的刺激。

　　In addition, gypsum powder used in hospitals also has good water resistance and stability. When patients undergo local cleaning or come into contact with a small amount of water, the solidified gypsum is not easily softened or collapsed, and can maintain a fixed shape; At the same time, it has stable chemical properties at room temperature and is not easily reactive with skin secretions, drugs, etc., reducing irritation to the skin.

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