This article talks about whether ultraviolet light can penetrate PC boards. best online philippines,best slots casino ph,best slots casino ph,best slots ph,philippines slots casino, BAY888.com The world's leading slot game platform, providing exciting gaming experience and generic rewards. Join now and start your journey to victory!，If you can happen to solve the problem you are facing right now, don't forget to pay attention to this site and get started now!
List of contents for this article:
- 1、How many years does a pc endurance board generally last? Is outdoor exposure easy to age? How can maintenance extend life?_ Baidu...
- 2、Why is PC endurance board easy to age? Double-sided UV coating to solve
- 3、Can ultraviolet sterilization penetrate through plastic plates?
How many years does a pc endurance board generally last? Is outdoor exposure easy to age? How can maintenance extend life?_ Baidu...
1. The service life of PC endurance boards is affected by many factors, generally about 5 to 10 years. Regarding outdoor exposure: PC endurance boards are relatively easy to age under outdoor exposure. Ultraviolet light in the sun accelerates changes in its molecular structure, causing aging phenomena such as yellowing, embrittlement, and reduced transparency of the plate. However, some higher-quality PC endurance boards now add anti-ultraviolet additives, which can delay the aging rate to a certain extent.
2. PC endurance boards can usually be used for 10 to 20 years, and the specific life is affected by material quality, use environment and maintenance methods. Outdoor exposure will accelerate aging, but standardized maintenance can significantly extend service life. Effect of outdoor exposure on PC endurance boards Ultraviolet light is the main factor leading to the aging of PC endurance boards. Long-term exposure can cause surface yellowing, light transmittance reduction (about 2%-5% per year), and impact resistance attenuation.
3. The PC endurance board can normally be used for about 10 to 15 years. If it is exposed outdoors, it will easily age. If it is properly maintained, it can be extended to more than 20 years. Key factors affecting the service life of PC endurance boards 1) Materials with good quality, such as plates made of new polycarbonate raw materials, have strong ultraviolet resistance and aging properties and can be used for more than 15 years; recycled materials or inferior raw materials may only be used for 3 to 5 years.
4. The service life of PC endurance boards is usually about 10-15 years. Outdoor exposure is prone to aging, and can be extended to more than 20 years through scientific maintenance. The core influencing factors for the service life of PC endurance boards are raw material quality: boards made of new polycarbonate (PC) raw materials have stronger anti-ultraviolet and anti-aging properties, and the life span can reach more than 15 years; boards made of recycled materials or inferior raw materials, the life span may be only 3-5 years.
Why is PC endurance board easy to age? Double-sided UV coating to solve
PC endurance boards are prone to aging mainly due to ultraviolet damage. Double-sided UV coatings effectively delay aging by blocking ultraviolet rays, uniformly protecting, and enhancing coating adhesion, extending the service life to more than 15 years. The reason why PC endurance boards are prone to aging is ultraviolet damage is the core factor: 60% of the ultraviolet light in the sun is transmitted through direct reflection, and 40% is transmitted through diffuse reflection. Buildings, glass curtain walls, asphalt pavements, smoke in the air, etc. can reflect and diffuse ultraviolet light.
This is achieved by applying an anti-ultraviolet agent to the surface of the PC endurance board.
Key factors affecting the service life of PC endurance boards 1) Materials with good quality, such as plates made of new polycarbonate raw materials, have strong ultraviolet resistance and aging properties and can be used for more than 15 years; recycled materials or inferior raw materials may only be used for 3 to 5 years. 2) The surface of high-quality PC endurance board has a UV coating, which can block more than 99% of ultraviolet light and avoid problems caused by ultraviolet radiation. This is the key to extending outdoor life.
The core role of UV coating The main function of PC endurance board is to resist sunlight and aging, and its core lies in the type of UV absorber.
Anti-ultraviolet coating: A UV coating will be added to the surface of high-quality PC endurance boards, which can block more than 99% of ultraviolet rays and prevent the plates from breaking molecular chains, yellowing and becoming brittle due to ultraviolet radiation. It is the key to extending outdoor life. Use environment: Under outdoor high temperature, high humidity, and strong ultraviolet rays (such as tropical areas), the aging rate of the plates will accelerate; while in indoor or sheltered environments, the life can be extended to more than 20 years.
Can ultraviolet sterilization penetrate through plastic plates?
1. Ultraviolet sterilization generally cannot effectively penetrate ordinary plastic plates, but some special plastics may have certain transparency, depending on the plastic material, thickness and ultraviolet wavelength.
2. Ultraviolet sterilization cannot penetrate ordinary plastic plates, but specially modified plastics may have certain transparency, depending on the type, thickness and ultraviolet wavelength of the plastic. Principle of interaction between ultraviolet ray and plastic The penetration of ultraviolet ray is limited: Ultraviolet ray (especially in the commonly used UVC band, with a wavelength of 200-280nm) has high energy but weak penetration ability. The molecular structure of ordinary materials will scatter, absorb or reflect ultraviolet ray, making it difficult to penetrate dense structures.
3. The penetration ability of ultraviolet light is limited. Most ordinary plastic plates will block the UVC band (the main force of sterilization). Whether it can penetrate depends on the material, thickness and ultraviolet wavelength. Interpreting the penetration possibility according to circumstances, take the common UVC ultraviolet light (wavelength 200-280nm) as an example: the light transmittance of ordinary plastics (such as PP, PVC, HDPE) is usually less than 50%, and thicker plastic plates (≥2mm) may completely block ultraviolet light.
4. Whether ultraviolet sterilization can penetrate through plastic plates needs to be discussed on a case-by-case basis. Ordinary plastic plates will significantly block UVC ultraviolet rays, resulting in a significant reduction or even ineffectiveness of the sterilization effect. The specific analysis is as follows: Transparent plastic plate: partially transparent but the effect is attenuated. If the plastic plate is made of transparent materials (such as some polypropylene or polycarbonate), ultraviolet light (especially in the UVC band, 200-280 nm) can partially penetrate, but the intensity will be significantly reduced due to the absorption and scattering of the material.
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