Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High chemical resistance borosilicate glass and purpose thereof

A high chemical-resistance boron and chemical boron technology, which can be applied to the types of packaging items, special packaging items, medical containers, etc., can solve the problems of borosilicate glass unable to meet the requirements of pharmaceutical packaging, large investment and strict process conditions.

Inactive Publication Date: 2010-06-02
SHANDONG LINUO NEW MATERIAL
View PDF0 Cites 83 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of my country's pharmaceutical industry, the quality requirements for pharmaceutical packaging materials are getting higher and higher. The borosilicate glass at the beginning of corresponding development cannot meet the requirements of pharmaceutical packaging. The production equipment and methods commonly used in the world require strict process conditions and relatively high investment. Big

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] High chemical resistance borosilicate glass is prepared as follows:

[0053] 1. Calculate the weight of raw materials based on oxides by weight, weigh the raw materials and mix them uniformly, melt them at 1560 ° C, and then pour them into steel molds; each composition is listed in Table 1 below (based on oxides by weight % ), coefficient of thermal expansion α 20 / 300 [10 -6 K -1 ], conversion temperature Tg (°C), softening point E (°C), working temperature V (°C), density ρ (g / cm 3 )

[0054] 2. Determine the chemical resistance according to the following method:

[0055] Acid resistance test method: GB / T15728---1995 consumes 0.5ml of 0.02mol / l HCl solution per gram of glass

[0056] Alkali resistance test method: GB / T6580---1997 consumes 135mg / dm 3

[0057] Water resistance test method: GB12416.2-90 consumes 0.85mg / dm 3

[0058] Each composition of table 1 (by weight % is based on oxide meter) and performance

[0059]

[0060]

[0061] Tabl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses high chemical resistance borosilicate glass, comprising the following components based on oxides in percentage by weight: 71-75 SiO2, 3-6 Al2O3, 8-10 B2O3, 4-10 Na2O and 0-2.5 K2O, 0-1.2 CaO, 0-1 MgO, 1-3 BaO and 0-0.3 CeO2, wherein Na2O+K2O ranges from 7 to 10, and CaO+MgO ranges from 0 to 1.2. The invention has the following advantages: 1. As2O3, Sb2O3, BaSO4 and other harmful substances are not used in constituents, and the borosilicate glass can be used as a material for packing medicines; and 2. tested by experiments, the high chemical resistance borosilicate glass prepared from the constituents by the traditional production equipment has the coefficient of heat expansion ranging from 5.0*10<-6> K<-1> to 6.0*10<-6> K<-1>, the inversion temperature Tg ranging from 520 DEGC to 572 DEGC, the softening point ranging from 765 DEGC to 782 DEGC, the working temperature ranging from 920 DEGC to 1200 DEGC and the density ranging from, 2.32 g / cm<3> to 2.5g / cm<3>, which meet the requirement on medicinal packing and reduces the production cost.

Description

technical field [0001] The invention relates to a high chemical resistance borosilicate glass and its application. Background technique [0002] my country adopts an expansion coefficient of 7.0×10 -6 k -1 Low borosilicate glass is used to make primary packaging materials for medicines. This glass is a pharmaceutical packaging material independently developed by my country. The properties of medical glass mainly include chemical stability, thermal stability and mechanical strength. Relevant standards have been formulated for alkali resistance. The national standards for water resistance of medicinal glass in my country are GB12416.1-90, GB12416.2-90 and national standard GB4771-84 for alkali resistance, which are the inner surface of medical glass containers and Test methods and grading standards for water resistance and alkali resistance of glass materials. The material basically meets the standard requirements, but exceeds the standard requirements after secondary process...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C03C3/095A61J1/00
Inventor 郑树祥史生宏孙翔
Owner SHANDONG LINUO NEW MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com