Polypropylene PP code, what material is polypropylene PP

Huayu Rubber & Plastic is a thermoplastic resin made of propylene polymerization. There are three configurations: iso-gauge, unregulated and inter-regulated, and industrial products are mainly composed of iso-gauge substances. Polypropylene also includes copolymers of propylene with a small amount of ethylene.

It is usually a translucent colorless solid, odorless and non-toxic. Due to the regular structure and high crystallization, the melting point is as high as 167, heat resistance, and the products can be sterilized by steam is its outstanding advantage. density, is a lightweight general-purpose plastic.

Corrosion resistance, tensile strength 30MPa, strength, rigidity and transparency are better than polyethylene. The disadvantage is that the low temperature impact resistance is poor, and it is easy to age, but it can be overcome by modification and adding antioxidants. Features:

It is non-toxic, tasteless, low density, strength, stiffness, hardness and heat resistance are better than low-pressure polyethylene, and can be used at about 100 degrees. With good....

The meaning of the number symbol for plastic products is as follows:

Beverage bottles made of No. 1 PET can be filled with room temperature water in a short period of time, but not with high temperature water, nor should they be filled with acid and alkaline drinks, it is recommended not to reuse, and do not put the mineral water bottle in the car to expose to the sun.

Plastic containers made of No. 2 HDPE high-density polyethylene are commonly found in medicine bottles, cleaning products, and bath products. These products are not easy to clean thoroughly, so they are not suitable for use as water cups, etc., and should not be recycled.

No. 3 PVC (also known as "V") polyvinyl chloride.

Products made of No. 4 LDPE polyethylene are commonly used in raincoats, building materials, plastic films, plastic boxes, etc. Because these two types of materials have excellent plasticity and low price, they are more commonly used. However, they are rarely used in food packaging because they have a low heat-resistant temperature and may release harmful substances when they decompose at high temperatures.

No. 5 PP polypropylene is the only plastic box that can be put in the microwave oven and can be reused.

Plastic products made of No. 6 PS polystyrene cannot be used in high temperature, strong acid, and strong alkali environments.

No. 7 AS acrylonitrile-styrene resin, which has been mass-produced with this material, has a history of more than 10 years, which is much longer than the history of PS and PC, and has high safety. The cup made of this material has high transparency and is resistant to falling, and it can be known that the polypropylene PP code is No. 5.

Polypropylene, is a polymer made by polyaddition of propylene. It is a white waxy material with a transparent and light appearance. The chemical formula is (C3H6)N, the density is, flammable, the melting point is 189, it softens at about 155, and the service temperature range is -30 140.

It can resist the corrosion of acids, alkalis, salts and a variety of organic solvents below 80, and can decompose under high temperature and oxidation.

Polypropylene is widely used in the production of clothing, blankets and other fiber products, medical equipment, automobiles, bicycles, parts, transportation pipelines, chemical containers, etc., and is also used in food and pharmaceutical packaging.

Polypropylene is a non-toxic, odorless, tasteless milky white highly crystalline polymer, which is one of the lightest varieties of all plastics at present. It is particularly stable to water, with an absorption rate of only 001%, with a molecular weight of about 80,000 to 150,000.

The formability is good, but due to the large shrinkage rate (1% Thick-walled products are easy to dent, and it is difficult to meet the requirements for some parts with high dimensional accuracy, and the surface gloss of the products is good.

Features:

Polypropylene, referred to as PP, is a colorless, odorless, non-toxic, translucent solid substance. Polypropylene is a thermoplastic synthetic resin with excellent performance, which is a colorless and translucent thermoplastic lightweight general plastic.

It has chemical resistance, heat resistance, electrical insulation, and high-strength mechanical properties.

and good high wear-resistant processing performance, which makes polypropylene since its inception, it has been widely developed and applied in many fields such as machinery, automobiles, electronic appliances, construction, textiles, packaging, agriculture, forestry and fishery and food industry.

Polypropylene PP can be divided into three types: inter-gauge, iso-gauge and unregulated. When I make a woven bag, it is irregular. Other information is not very hard to find.

You are asking too generally, there are hundreds of grades of PP copolymerization (maybe more than that, even more) from the origin and melt flow rate of the grade I don't know how many solute grades you want to know and what product is used and your location, typical copolymer eps30r sp179 k7726 These three copolymers represent the solute range of 3 stages, low-solution copolymerization, medium-solution copolymerization and high-solution copolymerization, solutes are: 9-12 26-28

What are the grades of copolymer polypropylene?

There are really thousands of kinds of this.

You can list certain indicators, such as melt index, impact, etc., and I can list a few grades for you.

To make a braided belt, you can use T30 550J now**Around 10700 You can contact me.

Brushed grade PP, so many grades in China.

Polypropylene is divided into homopolymer and copolymer of propylene and ethylene or other olefins, and the homopolymer can be divided into three types: isometric PP, interregulated PP and random PP, with the largest amount of homopolymer isometric PP. Here, the performance of PP refers to homopolymer isometric polypropylene.

The performance of PP has the following points:

1) PP is a colorless, odorless, tasteless and non-toxic thermoplastic crystalline polymer.

2) The transparency of PP has a great relationship with the crystallinity, in order to improve the transparency and reduce the crystallinity, in the production of PP film, the water quenching method should be used to extrude the blown film, so that the PP has no time to crystallize, and improve the transparency.

3) Homopolymer equal gauge PP has poor cold resistance, and the molded packaging products cannot be used below 0. The solution to this shortcoming is the copolymerization of propylene and ethylene, which is an ethylene propylene copolymer with a mass fraction of 5 7 and can withstand -8 -10.

4) PP has good chemical resistance, acid resistance, alkali resistance, grease resistance, and solvent resistance.

5) The tensile strength and impact strength of PP are higher than those of PE, but the brittleness is high at low temperature, and heat and light are easy to make PP age.

6) PP has excellent electrical insulation performance and low surface energy. Like PE, PP is prone to static electricity.

Polypropylene is a polymer formed by the polyaddition of propylene.

It is a polymer made by propylene polyaddition, a thermoplastic synthetic resin with excellent performance, colorless, odorless, non-toxic, and a translucent solid substance.

Advantages of polypropylene:

1. The relative density is small, and it is one of the lightest varieties of plastic.

2. Good mechanical properties, except for impact resistance, other mechanical properties are better than polyethylene, and the molding processing performance is good.

3. It has high heat resistance, and the continuous use temperature can reach 110-120.

4. Good chemical properties, almost no water absorption, and no reaction with most chemicals.

5. The texture is pure and non-toxic.

6. Good electrical insulation.

7. The transparency of polypropylene products is better than that of polyethylene products with high density and void space.

Disadvantages of polypropylene:

1. The cold resistance of the product is poor, and the impact strength at low temperature is low. The manuscript is blind.

2. Products are susceptible to aging by light, heat and oxygen in use.

3. Poor colorability.

4. Flammable.

5. The toughness is not good, the electrostatic degree is high, and the dyeing, printing and adhesion are poor. <>