Polypropylene grade naming Daquan

I. National Standard Nomenclature

Naming method

PPB-MP-300--M

PPB----------Characteristic Unit 1

MP-----------Feature unit 2

300-----------Characteristic unit 3

M------------- Feature Unit 4

Feature unit 1

Characteristic unit 1 is English polypropylene - Polypropylene abbreviation PP, all grades are the same.

The abbreviation code indicating the type of propylene polymer is:

H - propylene homopolymer

R——propylene random copolymer

B——propylene block copolymer

Feature unit 2

Characteristic unit 2 is the main use or processing method, important properties and additives of polypropylene products. They are all coded with the corresponding English letters. The code numbers are arranged from left to right, which are called first, second, third and fourth. Indicates that the material use or processing method is written in the first place, and important properties, additives, etc. are written in the second to fourth places. See Table 1.

Table 1 Code used by feature unit 2

Feature unit 3

Characteristic unit 3 represents a nominal value of the melt flow rate of the polymer. The nominal value of the melt flow rate is expressed by the resin of the melt flow rate nominal value multiplied by 100 times, but not less than three integers. If there are only two integers after multiplying by 100 times, then a zero should be added before the two integers; if the value after multiplying by 100 times is four integers, then this number is used as the code.

Feature unit 4

The characteristic unit 4 is a remark indicating the type of polymerization of the polymer, and if necessary, the designation of the main use or characteristic of the material. New grades, new uses and new special fillers can be added.

Table 2 Code used by feature unit 4

Taking the grade PPB-MP-300--M in the example as an example, it represents a low ethylene content block copolymer for injection molding, has a melt index MI of 3.00, and is resistant to impact. Reply to "PP" to view more PP articles

2. Enterprise standard brand nomenclature

The name of the polypropylene resin grade is composed of three parts: the first part is the code name of the processing method of the material, the second part is the code name of the nominal melt flow rate of the material, and the third part is the polymer polymerization type. The code name indicates.

first part:

The processing method of the material, using the first letter of the English code, the following code is used in this Catalogue:

F----squeeze flat film; M----injection;

H----coating; T----extruding flat yarn;

I----blown film; Y----spinning;

G----General

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. If there are only two integers after multiplying by 100 times, then a zero should be added before the two integers; if the value after multiplying by 100 times is four integers, then this number is used as the code.

Example 1: MFR is 2, 2 00 = 200, then 200 is code:

Example 2: MFR is 0.45, 0.45 is 00=45, and 045 is used as the code name;

Example 3: The MFR is 20, 20?00=2000, and the code is 2000.

Supplementary note to the second part

In order to distinguish the materials by the same number of granulations, the last digit of the melt flow rate code is distinguished by "0" or "1" in the designation of the grade: that is, the "1" indicates that the material only passes through One granulation, and "0" indicates that the material was subjected to secondary granulation.

the third part:

When the polymerization type of the polymer is a homopolymer, the third portion is omitted. Other polymer polymerization type codes are represented by:

Additional notes to Part III:

If necessary, list the main use or characteristics of the material at the end of the third part. For example, the brand F800EPS is taken as an example, which represents a melt index of 8.0 g/10 min, which is used for extruding a flat film random terpolymer and has lubricating properties.

Introduce the brand nomenclature

The name of the introduced brand is the naming method of several famous big companies abroad (ba sell, etc.), and the name of the brand is extended after the introduction of domestic enterprises.

Taking EP2C37F as an example, it can be divided into four parts from the back to the front: F, 37, C, EP2, which are called first, second, third and fourth parts respectively. The meanings of the various parts are as follows:

Part 1: Product use

A antistatic

B blow molding

F film type

G universal type

S drawing, fiber

P pipe

R injection molding

Part II: Product Use Additional Instructions

30 general purpose, suitable for long-term use when the ambient temperature reaches 90 degrees

33 universal grade for outdoor sunlight up to 90 degrees

34 smooth

35 smooth and anti-adhesive

37 smooth and anti-adhesive

38 oxidation resistance is better than 30

40 good thermal stability, the temperature can reach 110 degrees

50 thermal stability is better than 40, the use temperature can reach 120 degrees

60 can be used in detergent solutions up to 120 degrees

Part III: 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:

This part of the uniform grade can be ignored.

EP impact copolymerization products

EP1 or EP2 random copolymer product

For an impact grade, the letters following the two numbers indicate:

M impact ethylene content 6%

R high impact ethylene content 9%

U ultra high impact ethylene content 12%

Therefore, EP2C37F represents a film material of 5.0~7.0, which is randomly copolymerized, with smoothness and anti-stick properties.