Views: 0 Author: Site Editor Publish Time: 2024-09-18 Origin: Site
Nowadays, the emergence of various materials can still meet the needs of various industries. When some companies select refractory materials, they cannot simply consider the refractory degree, but also consider the refractory degree and heat resistance, and the compressive strength of the material.
As an important binding agent in the production of refractory materials, does sodium hexametaphosphate help the compressive strength of refractory materials?
There are two concepts for the compressive strength of refractory products. One is "normal temperature compressive strength", which is defined as the ratio of the ultimate compressive stress to the surface area that an object per unit area can withstand when it is destroyed at normal temperature.
The second is "high temperature compressive strength", which is defined as the ultimate compressive stress that a unit cross-sectional area can withstand without being damaged after the refractory product sample is fired to a specified high temperature condition.
Glassy industrial sodium hexametaphosphate dissolves slowly in water, so when used as a binder for refractory materials, it must be crushed into powder to accelerate its dissolution. It can be mixed with water in any proportion, so that refractory materials can be used because of their good fire resistance. Become material that people understand.
Sodium hexametaphosphate is a new refractory material with good properties among phosphates. It has good thermal shock stability, high compressive strength, strong slag corrosion and impact resistance, high load softening temperature and chemical stability. Its use temperature varies according to the variety and grade of raw materials, ranging from 1000 to 1800°C. For example, when some magnesium materials are used as refractory aggregates and powders, more industrial sodium hexametaphosphate is used as a combination.
In addition, it has a linear long chain configuration, which is adsorbed to the surface of the particles through the end groups, while the middle chain basically does not participate in bonding, which can provide additional electrostatic repulsion. The anions ionized after sodium hexametaphosphate is dissolved in water are adsorbed on the particle surface, increasing the electronegative property of the particle surface; in addition, the ionized Na+ ions can increase the thickness of the double electric layer. Under these two effects, sodium hexametaphosphate It has a dispersing effect.
The high-temperature industry and the refractory material industry have entered a new stage of development to improve quality and efficiency. The adaptability of refractory raw materials has also put forward new requirements beyond the traditional ones. The application of refractory materials has developed in the direction of specialization, comprehensiveness, greenness, and low consumption. , the main factor that diversifies the adaptability of refractory raw materials.
Henan Honghai Chemical Co., Ltd. is a professional production factory. Our factory introduces advanced technology from Domestic and abroad, The company produces phosphate and water treatment products, mainly producing polyacrylamide,EDTA 4 Na,EDTA 2 Na,sodium tripolyphosphate, sodium hexametaphosphate, sodium dihydrogen phosphate, sodium gluconate ,citric acid,soda ash.HEDP,AA.AMPS and other phosphate and water treatment agents.
Our products are widely used in urban water supply, clean,drainage, power, steel, chemical, oil, paper, medicine, food and many other fields.
Any requirements ,please Contact Us info@hhaichem.com or WhatsApp Number +8613271577251
