Nitrocellulose plastic
(1) Introduction
The nitrocellulose plastic is a plastic made of cotton linters or other natural cellulose such as grass and wood which is nitrated into nitrocellulose and then added with 20-30% plasticizer camphor. Its commercial name is Celluloid, and its English abbreviation is CN.
(2) Identification features
The natural color is translucent, and it has a camphor taste when rubbed; it is easy to soften and deform in boiling water, decomposes when the temperature is l00°C, and burns at 170°C; when it is exposed to fire, it burns violently and belongs to flammable plastic; the burning flame is yellow. There is a camphor taste released, and there is less residue after burning.
(three) performance
1. The dyeing is bright, and the pigment can be added to make an opaque product.
2. The softening temperature is low. When heated at 80 °C, it can be processed arbitrarily, and the molding size is relatively stable.
3. It is stable to oil and soluble in many organic solvents, but it is not affected in 5% ethanol, carbon tetrachloride and gasoline.
4. In the dilute acid and dilute alkali solution, the surface color can be changed, and it is easy to be decomposed in a concentrated acid or alkali solution.
5. Under the long-term effect of light and heat, camphor will gradually sublimate, which will restore the inherent hard and brittle nature of nitrocellulose, making the product easy to break.
(4) Use
Celluloid is mainly used for making cultural and educational supplies, such as triangle ruler, pen holder, musical instrument case, etc. It can also make eyeglass frames, umbrella handles, etc.; it is also often used as toys, combs, soap boxes, etc. Because of its light weight and good elasticity, it is a good raw material for table tennis.
Euro profile Lock Cylinder is used for Cylinder Lock by unscrews tools. It is easily rekeyed and easy to use with high security.
Advantage:
The main advantage is easy to be removed and mounted without using special tools.
Because the cylinder is profiled euro standard, it can be used for all cylinder lock from different manufacturer. So, once user need to rekey their lock, they just need to change the lock cylinder.
The cylinder in different formats that can all be used the same type of key. This may have the user make the choice of KEY ALIKE SYSTEM,MASTER KEY SYSTEM which were convenience to use with high security.
Type of cylinder
Reversible computer key(also named Dimple key or Hollow coding) lock cylinders. 6pins / 7pins /10 Pins are available to assure the high security. The special device achieve the snapping.
Reversible computer key with snaking key way to supply more code combination. Also, the bump can be resistant.
Telescopic pin cylinder are made for high security , high level quality with big quantity`s combination
Teeth key cylinder with high security.
MK/KA/YKA/GMK are available
The usage of lock cylinder system :
Individually Keyed System(KD)
With an individually keyed system,each cylinder can be opened by its unique key.
Key Alike (KA)
This system allows for a number of cylinders to be operated by the same code key.It is ideally suited to residential and commercial applications such as front and back doors.
Master Keyed (MK)
A master-keyed system involves each lock having its own individual key which will not operate any other lock in the system,but where all locks can be operated by a single master-key.This is usually applied in commercial environments.
Grand Master Keyed (GMK)
This is an extension of the master-keyed system where each lock has its own individual key and the locks are divided into 2 or more groups.Each lock group is operated by a master-key and the entire system is operated by one grand master-key.This is ideally utilized in complex commercial systems.
Euro Profile Cylinder Lock,Brass Euro Cylinder Lock,Euro Lock,Computer Key Lock
Rayma(SJZ) International Trading Co., Ltd. , http://www.raymalock.com