Application characteristics of LED curing system
Quick answer: In most UV systems, photoinitiators are selected by balancing wavelength fit, through-cure, color control, and line speed. Buyers usually compare a blended package instead of one isolated product.
The difference between LED curing and high pressure mercury curing and application characteristics
Output waveform is different.
1. Traditional UV mercury lamp curing machine produces UV light looks bright, high heat, the spectrum is very wide 220nm-420nm are covered, the real role in the effective curing of a certain UV spectrum only part of its energy, a significant part is in the visible section (stray light) and generate heat, easy to make the processing workpiece heat deformation.
2. LED UV curing machine, issued by a high-purity single-wavelength ultraviolet light, it belongs to the cold light source, the current market for commercial applications of light sources: 365nm, 385nm, 395nn, 405nm four kinds of light source equipment.
Environmental protection comparison.
1. LED UV curing machine does not contain mercury, ozone-free, green, environmentally friendly, is the best alternative to traditional UV light source
2. Traditional UV mercury lamp curing oven contains mercury, ozone, low environmental indicators
Heat impact.
1. LED UV curing machine cold light source without thermal radiation, the surface temperature of the bearer is low, a complete solution to the rapid light, liquid crystal production in the long-term problem of thermal damage; especially suitable for liquid crystal sealing, film printing and other requirements of low-temperature occasions
2. Traditional UV mercury lamp curing machine heat, the bearer by high temperature deformation
Ease of use.
1. LED UV curing machine without preheating, instant lighting, instantly reach 100% power UV output
2. Traditional UV mercury lamp preheating time is long, a long time to reach the work requirements
Service life: 1.
1. life is more than 10 times the traditional UV curing machine, about 20000-25000 hours.
2. low service life, UV mercury lamp service life of 800 hours
Output energy.
1. LED UV curing machine with high energy, stable light output, uniform light spot, improve quality
2. Traditional UV mercury lamp curing machine wave crest wide, light spot to the surrounding decreasing, uneven
Structural differences
1. LED UV curing machine equipment structure is simple and easy to integrate, can be customized
2. Traditional UV mercury lamp curing machine large size, complex structure
Operating factors
1. LED UV curing machine life is not affected by the number of switches
2. Traditional UV mercury lamp curing machine switch times affect the life
Cost of use
1. LED UV curing machine maintenance costs are zero, the use of LED UV oven to save at least 10,000 yuan per year / unit of consumables costs.
2. traditional UV mercury lamp curing machine regularly updated lamps and other equipment, high costs
LED curing on the UV light curing resin performance requirements
1, fast curing, curing heat requirements are not high. LED curing device does not generate heat, belonging to the cold light source, high temperature is the reaction is a catalyst, LED cold light source system is not conducive to curing.
2, temperature-sensitive substrates, require the resin reaction exothermic as low as possible to avoid excessive exothermic resin reaction, resulting in deformation of the substrate.
3, under aerobic curing conditions, has a strong antioxidant resistance to aggregation. LED light source for a single wavelength, the existing commercial 365nm, 385nm, 395nm, 405nm are deep curing, unfavorable to surface curing.
A practical selection route for photoinitiator-related projects
When technical buyers or formulators screen photoinitiators, the most useful decision frame is usually cure quality plus application fit: which package cures reliably, keeps appearance acceptable, and still works under the lamp, film thickness, and substrate conditions of the actual process.
- Match the package to the lamp first: mercury lamps, UV LEDs, and visible-light systems can rank the same photoinitiators very differently.
- Check depth cure and surface cure separately: a film that feels dry on top can still be weak underneath.
- Balance yellowing with reactivity: the strongest deep-cure route is not always the best commercial choice if color or migration risk becomes unacceptable.
- Use the final formula as the benchmark: pigment load, monomer package, and film thickness can all change the apparent ranking of the same initiator.
Recommended product references
- CHLUMINIT 819: Useful when a formulation needs stronger absorption and deeper cure support.
- CHLUMINIT 1173: A practical comparison point for classic short-wave UV initiation.
- CHLUMINIT ITX: A useful long-wave support route in many printing-ink packages.
- CHLUMINIT CQ: A direct reference for visible-light and color-sensitive curing discussions.
FAQ for buyers and formulators
Why are blended photoinitiator packages so common?
Because one product may control yellowing or lamp fit well while another improves cure depth or line-speed performance, so the full package is often stronger than any single grade.
Should incomplete cure always be solved by adding more initiator?
Not automatically. The real limitation may be the lamp, film thickness, pigment shading, or the rest of the reactive system rather than simple under-dosage.
Contact Us Now!
If you need Price, please fill in your contact information in the form below, we will usually contact you within 24 hours. You could also email me info@longchangchemical.com during working hours ( 8:30 am to 6:00 pm UTC+8 Mon.~Sat. ) or use the website live chat to get prompt reply.