Perlite door core board (also known as: perlite fire door core board) is made of expanded perlite, high temperature resistant inorganic aggregate, high temperature resistant inorganic binder as the main material, and processed through a set of processes. The core board is a natural green fireproof material that replaces the core material such as rock wool and aluminum silicate.
Perlite fire door core board perlite fire door core board This product is non-toxic, odorless, non-combustible, non-corrosive steel plate, high temperature at 1100 °C, no deformation, and the detection of combustion performance reaches Grade A. The latest research and development of perlite fireproof board is to meet the requirements of GB12955-2008 fire door national new standard for fire door filling materials. Our company has made further research on perlite fireproof board and introduced a set of one capable of simulating GB7633-87 And the experimental furnace of the Fire Test Method for Rolling Curtains, the perlite limit test was carried out on the perlite fireproof board, and the heating curve in the furnace was completely carried out according to the following diagram specified in GB7633-87. The representative values ​​of the time-temperature relationship are shown in the following table: time t ( min ) 5 10 15 30 60 90 120 temperature °C 556 659 718 821 925 986 1029 With the further specification of energy efficiency and fire protection requirements for modern buildings, rock wool, Aluminosilicate (the door core was completely eliminated by the state. The perlite fireproof (door core) board was chosen by modern fire doors and windows (commonly used in developed countries).
L-Ascorbic Acid, also known as Vitamin C, is a six-carbon lactone produced by plants and some animal species but not by humans and other primates. Ascorbic Acid functions as an enzymatic cofactor for multiple enzymes, serving as an electron donor for monooxygenases and dioxygenases.
- CAS No.: 50-81-7
- Molecular formula: C6H8O6
- Molecular Weight: 176.124
Application:
1. Antiscorbutic, antiviral
2. Analgesic, antipyretic
3. Physiological antioxidant. Coenzyme for a number of hydroxylation reactions; required for collagen synthesis. Widely distributed in plants and animals. Inadequate intake results in deficiency syndromes such as scurvy. Used as antimicrobial and antioxidant in foodstuffs.
L-Ascorbic Acid
L-Ascorbic Acid,Vitamin C 50-81-7,Ascorbic Acid
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