What Are Phosphate Binders?
Phosphate cement is a kind of air-hardening cementitious material made by phosphoric acid or phosphate solution cementing various refractory aggregates.
Phosphate cement
Right!
- Chinese name
- Phosphate cement
- Definition
- Refractory aggregate cemented with phosphoric acid or phosphate solution
- Belongs to
- Hard gelling material
- Category
- material
- Phosphate cement is a kind of air-hardening cementitious material made by phosphoric acid or phosphate solution cementing various refractory aggregates.
- An air-hardening cementitious material made by phosphoric acid or phosphate solution cementing various refractory aggregates. Phosphate cements can be divided into cements such as aluminum phosphate, magnesium phosphate, zinc phosphate and sodium polyphosphate according to the composition of the cement. According to the different properties of the aggregate, they can be divided into inorganic phosphate and organic phosphate cement. Different types of materials can be divided into high alumina, clay, silicon and magnesium phosphate cement; according to the hardening characteristics of the cement, can be divided into cold-setting and thermosetting phosphate cement.
This kind of cement has plasticity before coagulation and hardening, and can be made into products of various shapes according to engineering needs. The phosphate solution usually used as a cement is acidic. If the aggregate is alkaline, the cement can harden at normal temperature. If the aggregate is neutral or acidic, the cement needs to be heat treated at a suitable temperature or mixed to promote coagulation. To harden.
Phosphate cement can be made into various refractory concrete, refractory coatings or non-burning refractory products by pouring, vibration, mechanical pressing, ramming and spraying. It not only has the characteristics of general cementitious materials, such as plasticity, low-temperature hardening, admixability, etc., but also has the characteristics of refractory materials and high-temperature ceramics, such as: high fire resistance; high cold (hot) mechanical strength; thermal shock stability Good; good impermeability and impact resistance; high load softening temperature and chemical stability; strong high temperature adhesion.
Since the advent of zinc phosphate cement for dentists since the beginning of the 19th century, phosphate cement has grown to more than 20 varieties so far, which are respectively used as insulation materials and refractory coatings in the aviation industry; as high-temperature cements and agents in the electronics industry. Electrical coatings; adhesives in mechanical cutting; high-temperature adhesives in testing technology; and heat-resistant, corrosion-resistant and wear-resistant linings in industrial high-temperature kilns.