Is it often dizzy by the wide range of polyolefin grades on the market? After reading this book, it's so easy that I no longer have to worry about I can not remember the grades of PP products!
A national standard name nomenclature
Naming method
PPB-MP-300 - M
PPB ---------- Features Unit 1
MP ----------- Feature Unit 2
300 ----------- Feature Unit 3
M ------------- Feature Unit 4
Feature unit 1
Feature unit 1 is an English abbreviation for Polypropylene, PP, all of which are the same.
The abbreviation code for the type of propylene polymer is:
H - propylene homopolymer
R - propylene random copolymer
B - propylene block copolymer
Feature unit 2
Feature unit 2 is the main purpose or processing method of polypropylene products, important performance and additives, etc. Use the corresponding English letters as the code. Code from left to right, followed by the first, second, third and No. 4. Said the use of materials or processing methods written in the first place, the important performance, additives, etc. written in the second to fourth place.
Table 1 Feature Unit 2 used by the code
Feature unit 3
Characteristic unit 3 represents the nominal value of the polymer melt flow rate The nominal value of the melt flow rate code is expressed as the resin after multiplying the nominal value of the melt flow rate by 100 times but not less than three integers, After 100 times only two integers, you should add a 0 before the two integers; if multiplied by 100 times the value of four integers, then the number as a code.
Feature unit 4
Feature 4 is a note that indicates the type of polymerization of the polymer and, where necessary, a code that lists the main uses or characteristics of the material, such as new grades, new uses, and new specialty fillers.
Table 2 Feature Unit 4 used by the code
Take for example the PPB-MP-300-M brand name, which represents a low-ethylene block copolymer for injection molding with a melt index MI of 3.00 and impact resistance. article
Two. Enterprise standard nomenclature
The designation of a polypropylene resin grade is made up of three parts: the first part is the code representation of the material processing method, the second part is the designation of the nominal value of the melt flow rate of the material, the third part is based on the polymerization type Code that.
first part
Material processing methods, the first letter of English as a code name, the "Product Catalog" in the use of the following code representation:
F ---- extrusion flat film; M ---- injection molding;
H ---- coating; T ---- extruded flat yarn;
I ---- blown film; Y ---- spinning;
G ---- common
the second part
The code for the nominal value of the melt flow rate is expressed as a value obtained by multiplying the nominal value of the melt flow rate by 100 times but not less than three integers and if there are only two integers after multiplying by 100 times Add a 0 in front of an integer; if multiplied by 100 times the value of four integers, then the number as a code.
Example 1: MFR is 2, 2, 00 = 200, 200 is the code:
Example II: MFR of 0.45, 0.45 condemnation 00 = 45, then to 045 for the code;
Example 3: MFR is 20, 20? 00 = 2000, the 2000 code.
The second part of the supplement
In order to distinguish between grades with the same designation of material due to different numbers of prills, the last digit of the melt flow rate designation is distinguished by '0' or '1' in the nomenclature of the grades: that is, Granulation at one time, while '0' indicates that the material is over-pelletized.
the third part
When the polymerization type of the polymer is homopolymer, the third part is omitted.Other examples of the polymer type designation are:
The third part of the supplement
If necessary, the code for the main purpose or characteristic of the material is listed at the end of Part 3. For example:
Take F800EPS as an example, its representative melt index is 8.0g / 10min, for the flat film extrusion of random terpolymer, and has lubricating properties.
Third, the introduction of grade nomenclature
The name of the introduction of the brand name several well-known foreign companies (Basell, etc.) naming method, the introduction of domestic enterprises after the extension of the brand name.
Take EP2C37F as an example, it can be divided into four parts from the back: F, 37, C, EP2, which are respectively called first, second, third and fourth parts.The meanings of each part are as follows:
The first part: product use
A antistatic
B blow molding
F film category
G Universal
S drawing, fiber
P pipe
R injection molding
Part II: Additional Information on Product Use
30 general purpose, suitable for long-term use when the ambient temperature reaches 90 degrees
33 general level, suitable for outdoor sunlight, temperature up to 90 degrees
34 smooth
35 slippery plus anti-sticking
37 slippery plus anti-sticking
38 anti-oxidation better than 30
40 thermal stability, the use of temperature up to 110 degrees
50 Thermal stability better than 40, use temperature up to 120 degrees
60 Use temperature in detergent solution up to 120 degrees
The third part: The product melt index (230 degrees, 21.6N)
D: 0.2~0.5
Q: 0.6~1.0
S: 1.5~2.0
T: 2.5~3.5
C: 5.0~7.0
X: 7.0~10.0
F: 10.0~14.0
V: 14~19
Z: 20~30
H: 30~40
fourth part
Uniform grades can be ignored.
EP Impact Copolymer Products
EP1 or EP2 Random Copolymer Products
For anti-impact brands, the letters following the two numbers indicate:
M Medium Impact Ethylene Content 6%
R high impact Ethylene content 9%
U Ultra High Impact Ethylene content 12%
Therefore, EP2C37F represents the melting point of 5.0~7.0, random copolymer film material, with smooth and anti-stick properties.