Discussion on the classification of photoinitiator TPO

Photoinitiator TPO is also known as photosensitizer or photocuring agent. Photoinitiator TPO is a kind of compound that students can absorb energy of certain wavelength and appear positive ions in the UV region (250 ~ 420nm) or visible region (400 ~ 800nm), so as to cause solidification of the cross-linking structure of a single network.
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TPO photoinitiator is the full name of UV curing photoinitiator, can be divided into three categories, how specific? Let's analyze it together.

1. Pyrolysis initiator: absorbs the ultraviolet light and quantum emitted by the lighting system, resulting in the adverse reaction of cross-joint working grounding, so that the liquid can become a solid material film in a few fractions of a second (e.g., 1173, 184, 907, 369, 1490, 1700, etc.). Reactor: photoinitiator absorption of light into ecology, the emergence of regular I functions, covalent bonds between adjacent carbon atoms extend, weaken and break, develop into a major basis.

2. Photosensitive material initiator: recapture hydrogen from China to form BP-like base. Hydrogen deprivation mechanism whereby the excited state of the photoinitiator begins to strip hydrogen atoms from atoms such as monomers and low-element prepolymers, initiating the reaction.

3. The ionic photoinitiator of Yang is another important photoinitiator. They include diazo salts, diaryl thiols, triaryl thiols, iron aromatic salts, sulfadioxone and siloxane ethers. It is characterized by photoactivation that puts the molecular level in a state of constant excitation learning, which can be unwound in a series of subsequent developments, and then can cause the asset (also called Braunsteric acid) to act as a polymerization of initiating epoxides, lactones, acetaldehydes, cycloethers, etc.

Photoinitiator TPO The photolysis of iodized salt I-250 commonly used can produce uniform separation and double heat, and can also produce acids and free radicals. So, not only can we initiate photophysis, but we can also initiate photophysis simultaneously, which is a common development characteristic.

The photoinitiator I-160 can conjugate with aromatic rings of three sulfur atoms, disperse positively, and have good thermal stability. In addition to yellow salt, the light activity of other industrial structures is declining, or the thermal stability quality is too poor. Triazine sulfur salt has good thermal stability. It does not decompose when heated to 300 ℃ and does not polymerize when mixed with a single gas.

According to the production fragments of photoinitiator TPO, photoinitiators can be divided into photoinitiators, photoinitiators and photoinitiators. In fact, there are only light initiators and light initiators in the industrialization at present. However, the light initiators are mainly used in our country, and the light initiators are not highly industrialized, so there are many researches on the light initiators.