博文

目前显示的是 六月, 2017的博文

The safety of borosilicate glass

图片
Borosilicate glass  has a high content of SiO2 and B2O3, which makes its network integrity and density than ordinary sodium silicate glass, and has excellent thermal properties. Such as its thermal expansion coefficient is generally less than 60 × 10_7 / ℃, and ordinary sodium silicate glass is about (90 ~ 100) × 101 / ℃. Borosilicate glass thermal shock resistance △ T is generally greater than 150 ℃, known as hard glass or special hard glass, ordinary sodium silicate glass is less than 100 ℃. Therefore, borosilicate glass has good thermal stability, can be used in utensils cooking utensils, building fire and other fields. Because the borosilicate glass has excellent thermal properties, it is safe to make the container.SJZ JINXUAN TRADING CO., LTD.is the  Borosilicate glass   supplie r  .The Expansion coefficient of our product is 3.3-3.8 x106, so all our borosilicate glassware can be used for oven, microwave, freezer and dishwasher safe. All of our products have...

The introduction of Borosilicate glass

图片
B orosili cate glass  (aka hard glass), is the use of glass in the condition of high conductive properties, through the glass heating to realize glass melting, using advanced production process, because the expansion coefficient of line heat (3.3 + 0.1) * 10-6/K, also known as "borosilicate glass 3.3". It is a special glass material of low expansion rate, high temperature resistance, high strength, high hardness, high transmittance and high chemical stability, because of its excellent properties, is widely used in solar energy, chemical industry, pharmaceutical packaging, electric light, craft accessories industry. Its good performance has been widely recognized by all circles of the world, especially in the solar energy field. The developed countries such as Germany, America and the United States have already carried out more extensive promotion.Borosilicate glass (aka hard glass), is the use of glass in the condition of high conductive properties, through the glass heating...

What is the advantage of high temperature resistant glass?

图片
High temperature resistant glass  is relatively semi-tempered high temperature resistant glass, it is through the high temperature annealing treatment, the glass surface to form a super compressive stress, while the glass mechanical strength has also been strengthened special glass. After the steel heat treatment of glass surface stress is generally between 80 ~ 200Mpa. Which is characterized by broken broken obtuse angle particles, the degree of damage to the human body greatly reduced. Its strength is 4-5 times the strength of ordinary glass, semi-tempered high temperature glass 2-3 times, and has good thermal stability, heat treatment after the high temperature tempered glass, can withstand 180 ℃ -200 ℃ hot and cold Repeated temperature difference test. Semi-tempered high temperature glass applications mainly confined to the dining table and the like, in large construction and industrial machinery and equipment, are not allowed to use semi-steel high temperature glass, for two r...

The overview of heat resistant glass

图片
Heat-resistant glass  (refers to the special heat-resistant boric acid, silicic acid components, can withstand hot and cold fusion temperature changes in the special glass.The coefficient of thermal expansion (the ratio of glass body expansion due to temperature increase) is relatively small,even in the sharp temperature changes are not broken.With low expansion, thermal shock, high temperature, corrosion resistance, high strength and a series of excellent performance.Its raw material prices higher than ordinary glass, manufacturing costs are higher, so the sales price of heat-resistant glass than ordinary glass, tempered glass high.Heat-resistant glass material using high safety factor, will not happen similar to the phenomenon of glass blew blew;thermal expansion coefficient is small, resistant to a wide range of temperature changes (≥ 120 ℃), heat up to the maximum temperature of 1200 ℃.Heat-resistant glass for containers, bottles, experimental beaker, industrial boiler mirror, ...

Do you know the difference between borosilicate glass and ordinary glass?

图片
Borosilicate heat-resistant glass  is a type of "cooked glass", the cost is quite expensive, fully meet the international environmental testing standards. Due to its own heat and anti-instantaneous temperature difference performance requirements, the use of high-boron silicon material to replace the "raw glass" in a large number of lead, zinc and other harmful heavy metal ions, so its brittleness and weight is far less common in life ordinary " But also to ensure that, in the case of instantaneous temperature difference will not burst; its weight, than with a large number of heavy metal ions in the "raw glass" light more; in appearance, it seems with the ordinary glass also has Difference, visually out of the "raw glass" hard, crisp feeling. 1, the composition of raw materials: high borosilicate glass containing boron trioxide and silica in the amount of ordinary glass is higher, even boron content can reach 14%, silicon content of 80%. ...

Is high borosilicate glass toxic?

图片
Crystal glass, ordinary glass and high-borosilicate glass is the main material of glass containers, most manufacturers make high-grade glass containers are selected  high-borosilicate glass , so far the majority of manufacturers on the market indicate the product material is high borosilicate glass. We know that the glass is generally considered the most healthy container due to its stability and transparency. But many people think that in the hot environment, high borosilicate glass will lead to lead, and lead is a toxic substance, this argument is right? High-borosilicate glass has a particularly excellent high temperature resistance, high chemical stability, low expansion rate. It is widely used in pharmaceutical packaging, jewelry, drinking water containers and other products industry.The thermal expansion coefficient of borosilicate glass is (3.3 ± 0.1) × 10-6 / K, also known as "borosilicate glass 3.3. The main component of borosilicate glass is 12.5 ~ 13.5% boron, contai...

Borosilicate glass Why add B2O3

图片
Borosilicate glass , English called "borosilicate glass", the main component of alkali borosilicate glass (R2O-B2O5-SiO2) and non-alkali-low silicon borate glass (RO-B2O5-SiO2) glass, add Into the B2O3 borosilicate glass 5 aspects of the effect: 1, eliminate color, increase transparency and clarity. Borosilicate glass due to the relatively high content of B2O3, B2O3 has a superior elimination of glass color difference effect, this has to eliminate the color of the glass, also known as white glass, which in the prism, the lens is actually a wide range of practical production process , An effective solution to the light diffuse reflection and light diffuse problem. 2, thermal stability, a wide range of applications. Borosilicate glass is also known as heat-resistant glass, the thermal expansion coefficient is only 2/5 of ordinary glass, so in household appliances, environmental engineering, chemical engineering, lighting, precision machinery, bio-engineering, safety protect...

Boron boride glass boron anomalies

Boron anomaly refers to the borate or  borosilicate glass , with the increase in B2O3 content, some properties of the phenomenon of extreme values. This is caused by the transformation of triangular [BO3] to tetrahedral [BO4], where [BO3] is intelligent to form a layered network, while [BO4] can participate in the framework network with [SiO4] to enhance the stability of the network. The transformation process is mainly affected by two factors: ① the number of free oxygen, triangular [BO3] only obtained free oxygen can be converted into tetrahedron [BO4]; ② [SiO4] number, tetrahedron [SiO4] isolation. These two factors can cause boron anomaly, which can be measured by Na2O / B2O3 and [BO4] / [SiO4] respectively. The former corresponds to Na2O-B2O3- SiO2 glass, which corresponds to alkali-free low-borosilicate borate glass. For Na2O-B2O3-SiO2 glass, when Na2O / B2O3> 1, there is enough free oxygen in the glass, and the added B2O3 can be changed from triangular to tetrahedron. The...

Heat resistant glass should pay attention to matters

图片
Heat resistant glass  is used at high temperatures, improper use easily lead to glass burst, which will not only give yourself or the company caused serious losses, but also very easy to hurt. Therefore, the correct use of heat resistant glass products is very necessary. Need to pay attention to the following points: 1, first of all, need to pay attention to the installation of heat resistant glass, installation is a direct impact on the use of glass, heat resistant glass for the safety, please refer to our website, which has a detailed description. 2, pay attention to the maximum allowable working temperature of the glass: the maximum allowable working temperature is an important parameter in the heat resistant glass, the production temperature of our equipment is absolutely not allowed to exceed the maximum allowable working temperature of the glass, otherwise it will cause glass Burst. 3, pay attention to the maximum allowable working pressure of the glass: many heat resistant g...

Use of heat resistant glass

图片
heat resistant glass  is a kind of glass which can be used for a long time in a certain high temperature environment. It has the characteristics of very good mechanical strength and rapid temperature difference. In the high temperature environment, the heat-resistant glass can maintain its chemical properties for a long time Temperature and optical transparency. Lamps are instruments that can transmit light, distribute, and change the light distribution of the light source, including all the zero parts necessary for securing and protecting the light source except the light source, as well as the line accessories necessary for connection to the power supply. It is necessary to use light to choose a transparent material for the job, and light and heat is always inseparable, so the light of the place, the temperature is relatively high, so the heat-resistant glass is the best choice for lighting glass. High temperature glass good light transmission performance and heat resistance, mak...

Properties and Application of Borosilicate Glass

图片
Borosilicate glass  has many excellent properties, some properties are non-metallic glass and metal crystals do not have. Borosilicate glass has a higher strength than the general borosilicate. Such as amorphous Fe80B20, the breaking strength of 3700MPa, is the general structural steel 7 times, is close to the ideal whisker level; thickness of only 2 ~ 3μm borosilicate glass ribbon, can still maintain a very high strength, Elasticity is better than the average metal, the full strength of up to 50% or more; while maintaining high strength, borosilicate glass also has a high toughness to amorphous Pb80Si20 as an example. When the breaking strength of 2650MPa, the deformation can still be 30% to 50% of the cold rolling processing, Vickers hardness (Hv) up to 1000MPa or so, the equivalent of high hardness tool steel level, can support high-strength wear magnetic head. In addition, borosilicate glass generally has a high resistivity (greater than 100Ω · cm at room temperature), the resi...

What is the superiority of heat resistant glass

图片
Heat resistant glass  is a special glass for high-temperature industrial window glass, and its superior characteristics are the following. 1, has a very superior thermal shock resistance, which is the most important performance of heat resistant glass special. Because of its excellent thermal shock resistance, so in a certain high temperature environment, the glass should not be long-term high temperature baking and deformation. 2, the window with the heat resistant glass also has a good transparency, the transparency effect will not be lost due to high temperature. 3, heat resistant glass thermal expansion coefficient are relatively low. 4, the dielectric constant is low, at room temperature are not conductive. 5, softening temperature is high, the use of high temperature, suitable for a variety of relatively high operating temperature observation port. 6, Machinable superior performance, can be a series of hot and cold processing. 7, good chemical stability, the general water, ac...