Welcome To Jiyuan Zhengyu Industrial Co., Ltd. Official website!

                        Jiyuan Zhengyu Industrial Co., Ltd.

                        News

                        Location:Home > News

                        Introduction of Medicinal Glass

                        發布時間:2019-01-11 09:41:12 文章來源:nvhdufom 點擊次數:1101次

                          Medicinal glass refers to the glass specially used for drug packaging, generally refers to glass bottles and containers.

                          Medicinal glass refers to the glass specially used for drug packaging, generally refers to glass bottles and containers. According to the glass material, it can be divided into soda-lime glass and borosilicate glass. According to the manufacturing process, it can be divided into moulding bottle, control bottle and ampoule. Chemical property is one of the important criteria to measure the quality of medicinal glass, and the important parameter is linear thermal expansion coefficient. Does long-term storage of drugs reflect glass? According to the coefficient of linear thermal expansion, medicinal glasses are classified accordingly. International Standard ISO 12775 - 1997 "Classification of Normally Mass Produced Glass by Composition and Test Method" classifies medicinal glass into three categories:

                          = 1 GB2 3.3 borosilicate glass

                          The linear thermal expansion coefficient of the glass is as follows: a=(3.3+0.1)*10(-6) K(-1) (20-300 C). The chemical composition of the glass is as follows:

                          SiO 2 81%, B2O 312 13%, R2O 4%, AlO 3 2 3%.

                          = 2 GB2 neutral glass

                          The linear thermal expansion coefficient of this glass is: a=(4-5)*10(-6) K(-1) (20-300 C). Its chemical composition is as follows:

                          SiO 2_75% B2O 3 8-12% R2O 4-8% RO < 5% Al2O3 2-7%.

                          = 3 GB2 soda-lime glass

                          The linear thermal expansion coefficient of the glass is as follows: a=(8-10)*10(-6) K(-1) (20-300 C). Its chemical composition is as follows:

                          SiO 2 70-75% R2O 12-16% RO 10-15% AlO 3 0.5-2.5%



                      1. 13653912512
                        PHONE
                      2. 13653912512
                        MASSAGE
                      3. map
                        MAP
                      4. ewm
                        QRCODE
                      5. TOP

                        QQ

                        86 18021577953

                        sss在线视频,青柠视频在线观看高清,久久中精品中文字幕