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Transparent PC is aging resistant, what additives need to be added

PC materials are generally mainly transparent materials. Fluorescent brighteners, antioxidants, ultraviolet absorbers, and stabilizers need to be added to effectively improve the transparency of the appearance and environment. It is best to choose additive additives that are more suitable for the processing process. Example: Reicht's fluorescent brighteners are classified and are used in different places according to their application fields.

Adding hindered phenolic antioxidants (such as 1010) can block the free radical chain reaction and avoid yellowing and embrittlement of materials. It is especially suitable for high-temperature injection molded PC products. Ultraviolet radiation from the light stabilizer will cause cracking and atomization on the PC surface. By absorbing or scattering ultraviolet energy by hindered amine light stabilizers (such as 944), the service life of outdoor PC products (such as lampshades and windows) can be significantly extended and transparency can be maintained.

It will accelerate the destruction of the molecular structure and accelerate the yellowing rate; third, long-term exposure to high temperature environments, such as close to heating electronic equipment, will also change the properties of the material and aggravate yellowing. The reason why high-quality PC shells yellows more slowly is that they use high-purity raw materials, which have fewer impurities and stronger basic anti-aging capabilities; secondly, antioxidants, ultraviolet absorbers and other additives are added in the production process. Effectively delay the process of oxidation and light aging.

However, if the user requires the service life of the PC sun board to be at least 5 years or even longer, the amount of anti-aging additives required is very high, and the extruded board will turn yellow itself, which will affect the appearance. It is simple and cost-effective in occasions where service life and appearance requirements are not high. It is recommended to use weatherproof masterbatch or anti-UV masterbatch to better and evenly disperse the anti-aging active ingredients in the PC board, maximize the anti-aging effect, and avoid production. Dust pollution during the process is more environmentally friendly.

Lens scratches easily

1. If the storage method is wrong, the lens is placed downward, placed in the same bag as hard objects such as keys and mobile phones, or the mirror cloth is not folded (repeated scratching at the fiber knots), scratches can easily be caused.

2. Abnormal scratches If it is a new lens that has just been purchased within 1-2 months, there will be obvious scratches. This probability is abnormal. It may be due to poor wear resistance of the coating on the lens itself, which belongs to quality issues. If you have been maintaining your lenses in the correct way, such as wiping them with a special eyeglass cloth and preventing the lenses from touching hard objects when storing them, scratches still appear quickly, which also means that the lens coating process is defective and the quality is not up to standard.

3. PC (polycarbonate) lenses: Known for their excellent toughness and safety properties, are not easy to break, and are suitable for making rimless glasses. However, the surface of PC lenses is easy to scratch and has poor thermal stability. They are usually used to make sunglasses rather than optical glasses. Resin lenses: are a common high-quality choice. They are light and have good impact resistance and have strong absorption of ultraviolet light.

4. Falling off the nose pad itself will not directly damage the lens, but it will cause the frame to be unbalanced. When wearing, the lens is more likely to come into contact with the face or other objects, increasing the risk of scratching during daily use. It is recommended to stop wearing it immediately and send it to a professional optical shop for repair. Technicians will reinstall or replace the nose pad and check the frame for other invisible damage to ensure comfort and safety to wear.

What kind of preservatives are added to plastic pc

1. Antioxidant polycarbonate is susceptible to oxygen and high temperatures during processing or long-term useWhat additives do anti-scratch pc add, causing the molecular chain to break. Adding hindered phenolic antioxidants (such as 1010) blocks free radical chain reactionsWhat additives do anti-scratch pc addAvoid yellowing and embrittlement of materialsWhat additives do anti-scratch pc add, especially suitable for high-temperature injection molded PC products. Ultraviolet radiation from the light stabilizer will cause cracking and atomization on the PC surface.

2. The core categories of plastic preservatives include stabilizers, antioxidants and light stabilizers, which play a key role in preventing plastic aging and degradation. stabilizerWhat additives do anti-scratch pc add: Resistance to heat and chemical degradation During plastic processing, stabilizers protect the material structure by neutralizing the effects of heat or chemical substances.

3. Basic relationship between PC material and PEBS Plastic PC (polycarbonate) belongs to engineering plastics, and its raw material components do not contain PEBS (ethylene bisstearamide). However, in the processing of PC materials, PEBS is often introduced as a functional additive. The main role of PEBS in PC processing·Improving processabilityWhat additives do anti-scratch pc add: Adding PEBS can reduce the viscosity of PC melt, make the material easier to flow, and reduce equipment energy consumption.

Anti-scratch pc model

Hello! It is a pleasure to explain the impact resistance for you: 10436 and 1711AF are PC lenses, which can pass ANSI Z81 impact resistance test, labeled "Z87+". Anti-scratch: 10436 has anti-scratch hard coating, while 1711AF is anti-fog coating, but from scratch resistance, 10436 anti-scratch performance is better than 1711AF, and 1711AF anti-fog performance is better than 10436.

If the budget is limited, ABS+PC hybrid materials can also balance cost performance and basic compression resistance. PC material: close to plastic light (5-5kg/24 inches), good resilience is not easy to crack, surface wear patterns can prevent scratches. Aluminum-magnesium alloy: Anti-collision ceiling (4kg+/24 inches), metallic luster shows a high-level feeling, but it is easy to leave dents when scratched.

The full-coverage protective shell (third-party accessory) suitable for daily scenes is made of high-strength TPE/TPU material, and the edge cushion can absorb the drop impact; the skin-like coating design is non-slip and not easy to get fingerprints, improving holding stability.

"Scratch resistance" directly affects the service life. Key differences will be found when comparing surface hardness parameters: the Mohs hardness of composite PC is generally at 3B, and obvious scratches may appear after 3-5 checkings of luggage; Covestro materials rely on the surface. Hardening treatment can reach 4H level, which is equivalent to a level of protection for metal keys to leave no traces when they are scratched, which has special significance for violent sorting scenarios at airports.

How durable is spectacle lenses made of PC material?

PC material eyeglass lenses have excellent impact resistance, but their surface hardness is low and they are easy to scratch. Daily use requires a coating process to improve durability. Impact resistance The impact resistance of polycarbonate (PC) material is more than 10 times that of ordinary resin lenses. It can withstand impact energy of about 80-100 joules. It meets the U.S. FDA impact resistance standards and is suitable for sports protection or children.

Glasses made of PC are light and impact-resistant and suitable for sports or children, but their wear resistance and optical properties are not as good as resin lenses. Material characteristics PC (polycarbonate) lenses have an impact resistance that is more than 10 times that of ordinary resin lenses and are about 20%-30% lighter. However, the surface hardness is low and it is easy to scratch, so hard coating is needed. The UV blocking rate is about 99%, and no additional UV coating is required.

PC eyeglass lenses are very durable and suitable for daily use. They are one of the mainstream lens materials on the market. PC lenses have excellent impact resistance. Their impact resistance is more than 10 times that of traditional resin lenses. They can effectively prevent the lens from breaking during sports and accidental impacts, so they are especially suitable for children, teenagers and people who love sports. It also has 100% UV resistance and blocks UV light without additional coating.

This is the end of the introduction of what additives to add to anti-scratch PC and scratch resistant PC. slot machine ph casino,slot ph casino,slot machine casino,slot casino,slot ph,BAY888.com The world's leading slot game platform, providing exciting gaming experience and generic rewards. Join now and start your journey to victory!。