What are the characteristics of the type of filler for nylon? Characteristics of nylon material

Calcium carbonate (CACO3) Calcium carbonate is divided into two types: heavy and light. Uncoated fine-grained calcium carbonate acts as a true reinforcing agent in nylon, improving tensile strength, excellent surface quality, high heat deflection temperature, excellent rigidity and toughness, and resistance to many solvents, fuel oils, vegetable oils, and animal oils. Calcium carbonate filled nylon reduces the cost of raw materials and is widely used in gears for appliances, household goods, washing machines and automobiles.

Silicates include mica, talc, wollastonite, and kaolin. For crystalline nylon, talc has the role of a nucleating agent, which can improve the size and integrity of nylon crystals, reduce crystallization defects, and improve the performance of nylon. The use of aminosilanes as coupling agents can improve the interfacial adhesion of silicate and nylon.

The use of metal powders in the form of aluminum, bronze, lead, molybdenum, copper and nickel results in high heat deflection temperatures and conductivity. Nylon is filled with 80% barium ferrite and can be used as a small magnet.

Fillers with needle-like, rod-shaped, and layered crystalline structure characteristics can not only be used as fillers to reduce production costs, but also have a certain strengthening effect. Most conventional fillers are directly added to nylon resin, which will cause the decline of some properties of nylon plastics, such as impact strength, tensile strength, surface gloss and processing fluidity, etc., but the reinforcing filler will not cause a decrease in tensile strength after surface treatment or direct addition, but will improve tensile strength to a certain extent. In recent years, with the continuous development of filler shape control and crushing technology, ultra-fine inorganic fillers can improve the rigidity and toughness of plastics at the same time, becoming a very promising inorganic filler, which integrates reducing costs and improving rigidity and toughness, which is incomparable to most materials.

However, in general, the reinforcement and modification effect of fillers is far less than that of reinforced fibers, and can only be used in some occasions where the strength requirements are not too high.

Performance: Nylon is a ductile angular translucent or milky white crystalline resin, which is used as an engineering plastic.

The molecular weight of nylon is generally 10,000. Nylon has high mechanical strength, high softening point, heat resistance, low friction coefficient, wear resistance, self-lubrication, shock absorption and sound absorption, oil resistance, weak acid resistance, alkali resistance and general solvent resistance, good electrical insulation, self-extinguishing, non-toxic, odorless, weather resistance.

Good, poor staining. The disadvantage is that the water absorption is large, which affects the dimensional stability and electrical properties, and the fiber reinforcement can reduce the water absorption of the resin, so that it can work at high temperature and high humidity. Nylon with fiberglass.

The affinity is very good. It is often used to make combs, toothbrushes, clothes hooks, fan bones, mesh bag ropes, fruit packaging bags and so on. It is non-toxic, but it should not be in long-term contact with acids and bases.

It is worth noting that the tensile strength of nylon after the addition of glass fiber.

It can be increased by about 2 times, and the temperature resistance is also improved.

The shrinkage rate of nylon is 1% to 2%.

Peculiarity. 1 DuPont.

Tactel nylon makes the fabric soft and comfortable, and its good moisture absorption can balance the humidity difference between the air and the body, thereby reducing the pressure on the body, with an adjustment effect.

2 Exceptionally lightweight and easy to maintain.

3. It is machine washable, the drying time is three times faster than cotton, it only needs to be slightly ironed or non-ironed, it is not easy to deform, and it has significant anti-wrinkle ability.

4 Due to its excellent resilience, it can be stretched back to its original state.

In the process of buying clothes and pants in our daily life, we are all too familiar with the fabric of nylon. However, in order to know the fabric of the clothing more clearly, many people will have questions, what kind of material is nylon? What are the advantages and disadvantages of nylon fabrics?

First, nylon is a man-made fiber, which is chemically a condensed polymer. It is composed of carbon, hydrogen, oxygen, and then synthesizes hexamethylenediamine and adipic acid, and polymerizes these chemicals to form nylon. It is also often referred to as nylon or polyamide.

Nylon is often widely used as a substitute for traditional materials, such as wood, metal, etc., as a material for various structures.

Advantages of nylon fabrics:1. Good toughness, strong compressive ability and high impact strength.

2. High fatigue resistance, after strong and repeated twists and turns, it can also maintain the original mechanical strength. Therefore, it is often used for elevator handrails, bicycle plastic rims and other substances with obvious periodic fatigue.

3. The friction coefficient is small and the surface is smooth.

4. Strong alkali resistance and corrosion resistance. Therefore, it can be used as a packaging material for fuels, lubricants, etc.

Disadvantages of nylon fabrics:1. Low heat resistance.

2. The ability to resist low temperature is weak.

3. Poor antistatic properties, as clothing, it is necessary to avoid substances that are easy to generate static electricity.

4. Poor water absorption, and the size is often unstable.

Polyamide is referred to as nylon (PA), and there is.

Nylon rods, nylon sheets, nylon sheets, etc.

Characteristics of Nylon:

After absorbing water vapor, the mechanical properties will change, the toughness of the material will be better, and the impact tolerance will be stronger, but the elastic modulus will decrease, depending on the ambient air, temperature and time of absorption of water vapor, the change in properties at a specific depth can only affect the surface layer of the material, for thick-walled parts, its central area is not affected.

The short-term best use temperature is only suitable for extremely low mechanical stresses acting for a few hours.

The long-term maximum use temperature is based on the thermoplastic aging caused by oxygen, which will lead to a decrease in mechanical properties, which is applicable to the situation that the original tensile strength is reduced by 50% after being exposed to a certain temperature for more than 5000 hours (measured in a greenhouse), this value does not indicate the mechanical strength of the material under high temperature application, for thick-walled parts, only the surface of the material is affected by high-temperature oxidation, and the use of antioxidants can better protect the surface of the material, in any case, the central area of the material is not affected, The minimum applicable temperature is inherently affected by possible stress factors, such as crashes and shocks in the application, and the stated value refers to a certain minimum level of impact stress.

The above-mentioned electrical properties, obtained by measuring the natural state, dry materials, may be significantly different from other colors (especially black) or materials that absorb water.

The mechanical properties of fiber-reinforced materials are obtained by measuring the fiber in parallel to the direction of the fibers on the injection mold sample.

Different types of nylon have very different data, what kind of use do you need? I'll give you a set of reference data.

From a chemical point of view, nylon is a condensed polymer whose constituent units are connected by amides, so it is also a type of polyamide. Nylon is the world's first fully man-made fiber, and its raw materials are carbon, hydrogen, and oxygen. From these raw materials, two basic chemicals are generally synthesized, in most cases hexamethylenediamine and adipic acid.

They are mixed together and polymerized to form nylon.

One of the most common species of nylon is nylon 66, named after the six carbon atoms contained in its own diamine and adipic acid. In the chain of the polymer, hexamethylenediamine and adipic acid alternate with each other, so unlike other polymers (e.g. proteins), in nylon, the direction of the amide is constantly alternating.

Extended Materials. The emergence of nylon has changed the face of textiles, and its synthesis is a major breakthrough in the synthetic fiber industry, and it is also a very important milestone in polymer chemistry.

During World War II, the Allies used parachutes made of nylon (previously made of Asian silk), as well as tires, tents, ropes, and other military supplies. It was even used to make paper on which American currency was printed. At the beginning of the war, cotton accounted for 80% of the fibre raw material, and the other 20% was mainly wood fibre.

By August 1945, the share of cotton had fallen to 75 per cent, while the share of man-made fibres had risen to 25 per cent.

In Chinese mainland, nylon fiber was first developed by Jinzhou Organic Chemical Factory, hence the name nylon.

The main varieties in nylon are nylon 6 and nylon 66, which are absolutely dominant.

This is followed by nylon 11, nylon 12, nylon 610, nylon 612, nylon 1010, nylon 46, nylon 7, nylon 9, nylon 13, and new varieties include nylon 6i, nylon 9t and special nylon MXD6 (barrier resin) and so on.

There are many modified varieties of nylon, such as reinforced nylon, monomer cast nylon (MC nylon), reaction injection molding (RIM) nylon, aromatic nylon, transparent nylon, high impact (super tough) nylon, electroplated nylon, conductive nylon, flame retardant nylon, nylon and other polymer blends and alloys, etc., to meet different special requirements, widely used as metal, wood and other traditional material substitutes, as a variety of structural materials.

Billion Saint Nylon reminds you! 1.High mechanical strength, high tensile and compressive strength. The specific tensile strength is higher than that of metal, and the specific compressive strength is comparable to that of metal, but it is not as rigid as metal. The tensile strength is close to the yield strength and more than double that of ABS.

2.The fatigue resistance is outstanding, and the workpiece can still maintain the original mechanical strength after repeated bending. Common escalator handrails, new bicycle plastic rims and other occasions with obvious periodic fatigue effects are often used in PA.

3.High softening point, heat resistance (such as nylon 46, etc., high crystalline nylon) has a high heat deflection temperature and can be used for a long time at 150 degrees Celsius. After PA66 is reinforced with glass fiber, its heat deflection temperature reaches more than 250 degrees).

4.The surface is smooth, the coefficient of friction is small, and the wear is resistant. It has self-lubrication and low noise when it is used as a moving mechanical component, and can be used without lubricant when the friction effect is not too high; If you do need a lubricant to reduce friction or help dissipate heat, water, oil, grease, etc. are options.

As a result, it has a long service life as a transmission component.

5.Corrosion-resistant, very resistant to alkali and most salt liquids, but also resistant to weak acids, oil, gasoline, aromatic compounds and general solvents, inert to aromatic compounds, but not resistant to strong acids and oxidants. It can resist the erosion of gasoline, oil, fat, alcohol, weak sulfe, etc., and has good anti-aging ability.

It can be used as a packaging material for lubricating oil and fuel.

6.It is self-extinguishing, non-toxic, odorless, good weather resistance, inert to biological erosion, and has good antibacterial and anti-mildew ability.

7.It has excellent electrical properties. Good electrical insulation, nylon has high volume resistance, high breakdown resistance, and can be used as power frequency insulation material in a dry environment, even in a high humidity environment, it still has good electrical insulation.

8.The parts are lightweight, easy to dye, and easy to form. Due to its low melt viscosity, it can flow quickly. It is easy to fill the mold, the freezing point is high after the mold filling, and it can be quickly set, so the molding cycle is short and the production efficiency is high.

Abrasion resistance, high sliding, high toughness.