0
Because phenol formaldehyde is a resin it is usually a mixture of chain lengths and cross linking. For this reason, you would not expect it to have a fixed melting point - rather it would usually have either a melting point range or a decomposition temperature (depending on the structure). As an example, the company Polyols and Polymers lists the melting point range of their POLYTONE PF 201 product as 700C-850C while their POLYTONE AP 132 product has a "softening point" of 970C-1100C but no melting point. Bakelite - which is one of the many types of phenol formaldehyde resin - is a thermosetting plastic which has no melting point; it has a decomposition point. As an example, the Bakelite manufactured by Jiacheng-Chem Enterprises Ltd. has a listed decomposition point range of 240~ 280°C. Again, because it is a mixture of polymer sizes and degree of cross linking, it doesn't have just one fixed temperature; it has a range over which the many different molecules will decompose. The temperatures under which phenol formaldehyde will melt, soften, or decompose are also affected by the amount of residual monomers still present in the polymer matrix.
What else can I help you with?
Melting point for LPG?
what is lpgs melting point
Why is phenol formaldehyde used?
Phenol formaldehyde adhesives are generally hot press adhesives used extensively in the manufacture of plywood and other wood products such as flakeboard, oriented strand board and laminated veneer lumber. The reason it dominates this market is its relatively low cost, ability to achieve high quality bonds rapidly with the application of heat, and for its durability that equals or exceeds wood, when exposed to severe service environments.
Melting point for tin?
Tin is a metal,it exist in solid form. It have a low melting temperature of 232 C (449.47 F).
What is the melting point of Polycarbonate roofing?
PC melting temp is approx 265 deg C, however its glass trans temp is 145 deg C - begins to 'soften'. Working limits are therefore below this value
What is a calciner?
A calciner is a person or object which calcines - which heats something without melting it, in order to drive off water - especially in the case of heating up limestone to form quicklime.
What are monomers of bakelite?
phenol and formaldehyde!!!
What is phenol formaldehyde impregnated paper?
Pertinax
Tell you three characteristics of formaldehyde?
Three characteristics of formaldehyde is melting point(−92 °C) , boiling point(−21 °C), and it is a colorless gas.
What chemical is contained in embalming fluid and its melting point is -97.8 degrees Celsius.?
It is possible that you think to formaldehyde (melting point -92 0C).
What is the color of phenol formaldehyde resin after it is prepared?
Phenol formaldehyde resin is typically prepared as a colorless or slightly yellowish liquid. The color can vary depending on the specific formulation and processing conditions used during preparation.
What are the key factors that influence the phenol-formaldehyde reaction?
The key factors that influence the phenol-formaldehyde reaction include the ratio of phenol to formaldehyde, the pH level of the reaction mixture, the temperature of the reaction, and the presence of catalysts or inhibitors. These factors can affect the rate of the reaction, the formation of desired products, and the overall efficiency of the process.
Is phenol a solid or liquid?
Phenol is a viscous liquid or can be crystals as phenol has a melting point of 40.5°C which would make it a solid at room temperature.
What is the Commercial name of phenol formaldehyde polymer?
Bakelite (plastic) invented by Leo Baekeland.
What is the state of phenol at 25 C degrees?
Phenol is a solid at room temperature (25°C). It has a melting point of 40.5°C, so at 25°C, it would exist in a solid state.
What is the structure of bakelite?
Bakelite is a thermosetting plastic made from the polymerization of phenol and formaldehyde. The structure consists of a three-dimensional network of cross-linked chains, giving it its rigid and heat-resistant properties.
What were the first plastics made of?
Two of the earliest plastics were:Bakelite = phenol formaldehydePolyurethane = urea formaldehyde
Chemical properties for the Phenol formaldehyde?
Simple phenolic resins are condensation polymers formed from phenol and formaldehyde. Therefore, they contain only the elements found in phenol and formaldehyde: carbon, hydrogen, and oxygen. The characteristic bond for a cured phenolic resin is a methylene group, derived from a formaldehyde molecule, joining two aromatic rings derived from two phenol molecules. A wide variety of structural formulas are possible, because resins can be made from a variety of ratios between phenol and formaldehyde.
