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Overview of UV Monomers

Overview of UV Monomers

Compared to organic solvents, diluents that can participate in photocuring film-forming reactions are called reactive diluents. These are small organic molecules containing polymerizable functional groups, and thus they are commonly referred to as monomers. In early photocuring systems, the reactive diluents used were typically conventional addition-polymerization monomers, such as styrene, N-vinylpyrrolidone, methyl acrylate, and 2-ethylhexyl acrylate. However, due to their low boiling points, strong odors, and high toxicity, these monomers are now rarely employed. Moreover, certain individual monomers are highly viscous liquids or even solids at room temperature and do not possess any diluting effect; therefore, it is more appropriate to refer to them as monomers rather than reactive diluents.

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2025

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Hydroxyacrylate monomer

Hydroxyacrylate monomer

In the synthesis of polyurethane acrylates, hydroxy esters of acrylic acid react with NCO groups to introduce acryloyloxy groups. These acryloyloxy groups typically reside at the chain ends of polyurethane prepolymers.

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2025

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The “Alien Family” of the Chemistry World

The “Alien Family” of the Chemistry World

Isocyanates—this name might sound like it belongs to the “Alien” family of the chemical world, but don’t be alarmed! In fact, they’re a group of versatile creators, adept at crafting all sorts of polyurethane masterpieces in the molecular realm.

10

2025

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The “Two-Gun Hero” of the Alcohol Family

The “Two-Gun Hero” of the Alcohol Family

Alcohols are like little elves in the organic world, their hydroxyl groups—tiny hands—gripping tightly onto carbon atoms in hydrocarbon chains or side chains attached to benzene rings, as if they’ve caught hold of the very pulse of the chemical universe. Depending on the type of hydrocarbon chain involved, alcohols can be classified into fatty alcohols and aromatic alcohols—much like chemical twins: one hailing from the fatty family, the other from the aromatic family, yet both sharing the same alcoholic heritage. Based on the kind of carbon atom to which the hydroxyl group is attached, alcohols further divide into primary alcohols, secondary alcohols, and tertiary alcohols—three brothers within the alcohol family, each playing a distinct role. And according to the number of hydroxyl groups present in a molecule, alcohols can be categorized as monohydric alcohols, dihydric alcohols, and trihydric alcohols—akin to the Three Musketeers of the alcohol world, each more versatile than the last. The number of hydroxyl groups determines their performance capabilities on the chemical stage.

10

2025

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The “Sun Wukong” of light-curing resins—watch me transform 72 times!

The “Sun Wukong” of light-curing resins—watch me transform 72 times!

Within the PUA family, classified according to the structure of the isocyanate, polyurethane acrylates can be divided into aliphatic PUAs and aromatic PUAs. Aliphatic PUAs, derived from aliphatic and cycloaliphatic isocyanates, are renowned for their excellent light and weather resistance, resistance to yellowing, lower viscosity, and good flexibility. They exhibit well-rounded overall performance but tend to be relatively more expensive. On the other hand, aromatic PUAs, synthesized from aromatic isocyanates, contain benzene rings, making them relatively rigid. The cured films produced by these PUAs boast high mechanical strength and hardness, as well as good heat resistance, and they are more affordable. However, they have a slight tendency to yellow over time and exhibit poorer weather resistance.

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2025

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The UV coating with the fastest photocuring rate currently available.

The UV coating with the fastest photocuring rate currently available.

The presence of optical fiber coatings enables optical fibers to maintain long-term stability and low signal-loss performance even when operating over long distances in complex environments. The importance of optical fiber coatings to the overall performance of optical fibers can be summarized as follows: Without high-quality optical fiber coatings, there would be no high-quality fiber-optic networks—and consequently, there would be no high-speed internet as we know it today.

10

2025

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The “tough guy” among tough guys in light-curing resins

The “tough guy” among tough guys in light-curing resins

Phenolic epoxy acrylate is prepared by reacting phenolic epoxy resin with acrylic acid. The phenolic epoxy resin itself is first obtained through a polycondensation reaction between phenol and formaldehyde, yielding a linear, low-molecular-weight phenolic resin, which is then reacted with epichlorohydrin to produce the corresponding epoxy compound. Since the final esterification product—phenolic epoxy acrylate—has a relatively high viscosity, a certain amount of diluent is typically added during the early stages of the synthesis reaction to reduce its viscosity.

10

2025

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The Mother of Electronic Products

The Mother of Electronic Products

A PCB—known in Chinese as a printed circuit board, or sometimes referred to as a printed wiring board—is a crucial electronic component. It serves as the structural support for electronic components and also acts as the medium through which these components are electrically interconnected. For this reason, it’s often called the “mother of electronic products.” Don’t underestimate this seemingly ordinary board—it’s actually a kaleidoscope of the electronics world, turning our technological dreams into reality.

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2025

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