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Mais de 1200 tipos de fornecimento de matérias-primas plásticas

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Matérias-primas exportadas para mais de 60 países

Embalagem de materiais de polipropileno industrial de fibra automotiva


O polipropileno (PP) é um polímero de hidrocarbonetos linear, expresso como CnH2n. PP, como o polietileno (ver PEAD, L/LLDPE) e polibuteno (PB), é uma poliolefina ou polímero saturado. O polipropileno é um dos polímeros mais versáteis disponíveis com aplicações, tanto como plástico quanto como fibra, em praticamente todos os mercados de uso final de plásticos.


categorias: Podutos > Plástico para uso geral > Polipropileno


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Specifications & Applications

Grade:

Other

visual inspection

Translucence

Application:

Washing machine parts, auto parts,

home appliance housings

Notes:

Processing conditions: Other

Technical parameters:

Items:

Test conditions (Statues)

Test method

Standard

Units

Physical performance

Melting flow index

2.16Kg

Q/SY DS0513

28.3

g/10min

tensile yield stress

 

Q/SY DS 0515

22.6

MPa

flexural modulus

 

Q/SY DS 0515

18

GPa

Mechanical Properties

Izod impact strength  

23℃

Q/SY DS 0517

19

J/m

Izod impact strength

-20℃

Q/SY DS 0517

287

J/m

Big grains and small grains

 

SH/T 1541

2.0

g/Kg

yellow index

 

Q/SY DS 0514

3.8

 

ash content

GB/T 93456

GB/T 9345

0.031

%

 

Polypropylene brief introduction

Polypropylene (PP) is a linear hydrocarbon polymer, expressed as CnH2n. PP, like polyethylene (see HDPE, L/LLDPE) and polybutene (PB), is a polyolefin or saturated polymer. Polypropylene is one of those most versatile polymers available with applications, both as a plastic and as a fibre, in virtually all of the plastics end-use markets.

Development

 

Following the work by Ziegler in Germany, the process for producing "stereoregular" polymers was perfected by Professor Giulio Nattain in Italy.  Natta produced the first polypropylene resin in Spain in 1954. Natta utilised catalysts developed for the polyethylene industry and applied the technology to propylene gas.

 

These new polymers with their ability to crystallise soon became popular and polypropylene is now a very successful product in many areas.  Commercial production began in 1957 and polypropylene usage has displayed strong growth from this date. The versatility of the polymer (the ability to adapt to a wide range of fabrication methods and applications) has sustained growth rates enabling PP to challenge the market share of a host of alternative materials in plethora of applications including... 

Type  Product
mouldings automotive components, sailing dinghies, etc.
fibres carpets, bailing twine, clothing, etc.
tape replaced jute
film biaxially oriented film (OPP)
foam structural foam, and low density packging (bead process similar to XPS)

 

Oriented polypropylene (OPP) has seen considerable growth, having replaced cellophane in virtually all applications.

 

The properties of Polypropylene include...

 

Semi-rigid

Translucent

Good chemical resistance

Tough

Good fatigue resistance

Integral hinge property

Good heat resistance

PP does not present stress-cracking problems and offers excellent electrical and chemical resistance at higher temperatures. While the properties of PP are similar to those of Polyethylene, there are specific differences. These include a lower density, higher softening point (PP doesn't melt below 160oC, Polyethylene, a more common plastic, will anneal at around 100oC) and higher rigidity and hardness. Additives are applied to all commercially produced polypropylene resins to protect the polymer during processing and to enhance end-use performance.

    Homopol Copolym
Density kgm3 905 905
Tensile Strength Mpa 33 25
Tensile Modulus  Gpa 1.4 1.0
Elongation at Break % 150 300
Hardness Rockwell "R" Scale 90 80
Notched Izod Impact kJm-1 0.07 0.1
Heat Distortion Temp (HDT) 0.45 MPa / °C 105 100
Heat Distortion Temp (HDT) 1.80 MPa / °C 65 60
Volume Resistivity   logÙm 19 19
Oxygen Index % 17 17

3 Chemical Structure 

Linear hydrocarbon polymer, little or no unsaturation. Similar to polyethylene in many properties, especially solution and electrical. However, the presence of the methyl group attached to every alternate backbone chain carbon atom can alter the properties in a number of ways:  

 

(1)    it can cause a slight stiffening of the chain - increasing the crystalline melting point (Tm);  

(2)    it can interfere with the molecular symmetry - depressing crystallinity and hence Tm.

 

Isotactic Polypropylene Molecular Image

Isotactic Polypropylene Molecular Image

Isotactic

Syndiotactic Polypropylene Molecular Image

Syndiotactic Polypropylene Molecular Image

Atactic Polypropylene Molecular Image

 

Syndiotactic

 

Atactic Polypropylene Molecular Image

In the case of very regular polymers, ISOTACTIC form, the net result is a melting point some 30oC higher than that for HDPE.

 

The methyl group also has a chemical effect, i.e. tertiary carbon atom provides a site for oxidation - PP less stable than PE, also peroxides and radiation lead to chain scission rather than cross-linking.

 

Manufacturers quote "isotactic index" - amount insoluble in hot solvent - which indicates (?) the percentage isotactic polymer in the grade. N.B. usually 90-95% isotactic. Glass transition around 0oC presents problem of embrittlement and this can be altered by copolymerisation (with ethylene  block copolymers) and/or blending with rubber, e.g EPM. Polypropylene does not crystallise so readily as polyethylene, it tends to supercool, and this becomes worse at higher molecular weights.

 

Applications

 

Buckets, bowls, crates, toys, medical components, washing machine drums, battery cases, bottle caps. Elastomer modified for bumpers, etc. Talc filled for additional stiffness at elevated temperatures - jug kettles, etc. OPP films for packaging (e.g. crisps, biscuits, etc.). Fibres for carpets, sports clothing.

 

Hot Tags: Packing automotive fibre industrial polypropylene materials , manufacturers, suppliers, factory, Customized

Category
Grade
MFI
Density
Major Applications
Homopolymer - Extrusion
F103
3.3
0.9
BOPP Film Grade - General Purpose, Lamination & Metallizable films
T30S
3.3
0.9
Raffia Tapes ,Woven Sacks for Packaging Fertilizers, Cement, Polymers, Carpet Backing ,FIBC etc.
T103
3.3
0.9
Thermoformed Cups, Containers & Other disposable items
F110
11
0.9
TQ and Cast Films for General Purpose Packaging etc.
Homopolymer – Injection Molding
M103
3
0.9
General Purpose Injection Molding
M106
6
0.9
General Purpose Injection Molding
M108
8
0.9
General Purpose Injection Molding
M110
10
0.9
General Purpose Injection Molding, Furniture etc.
Impact Copolymer – Injection Molding
M304
3.5
0.9
General Purpose Injection Molding
M310
10
0.9
Battery Boxes
M311T
10
0.9
Compounding, Automotive Components, Luggage and Industrial Components
M312
12
0.9
Compounding, Industrial Components, Automotive Components, Luggage, Pails, Houseware, Sanitary Wares etc.
M315
15
0.9
General Purpose Injection Molding
M325
25
0.9
Compounding, Automotive Components, Houseware, Appliances parts, Extrusion Coating
M340
40
0.9
Appliance & White Goods, Automotive component, Compounding,TWIM
M307
7
0.9
General Purpose Injection Molding
Random Copolymer – Blow Molding
B202S
1.9
0.9
Bottle & Containers for Medical and Transparent Products (e.g. IV Fluid Bottles) etc
B200
1.9
0.9
General Purpose Blow Molded & Thermoformed Items, Sheets for Files & Folders.
M212S
12
0.9
High Clarity Containers, Household items,Injection Syringe, Laboratory products & ISBM Bottles

Our company Covering an area of about 73500 square meters, it currently has 4 modern production workshops with more than 450 employees. In addition to the headquarter in Luoyang, our company has also established a oversea factory in Cambodia.We have more than 23 year’s rich experience in the plastic industry. Our main products include PP, PE, GPPS HIPS, ABS, PVC,SBS, PP BIG BAG, etc and can provide more than 1200 kinds of plastic raw materials. Our company has successfully passed five system certifications of quality management, environmental management, occupational health and safety management, energy management, and food safety management through continuously optimized adjustments, As the products meet international standards, the company has made business contacts with more than 80 countries and regions such as Southeast Asia, Central Asia, North America, South America, and Europe, etc.

We have established long-term cooperative relations with more than 60+ well-known enterprises all over the world

Our company has 12 certifications and 57+ patents.

23 years' experience Professional purchasing consultant with a supply chain of 1200+ plastic raw materials in China.

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