What is the difference between helmet material, ABS composite material, FRP, and carbon fiber? How c

1. ABS engineering plastics.

ABS engineering plastics are PC ABS (engineering plastic alloy), the Chinese name in the chemical industry is plastic alloy, the reason why it is named PC ABS, because this material has both the excellent heat and weather resistance of PC resin.

Dimensional stability and impact resistance, and excellent processing fluidity of ABS resin. Therefore, it is used in thin-walled and complex-shaped products to maintain its excellent properties, as well as to maintain the formability of plastic and a material composed of esters.

2. Glass fiber reinforced plastic (FRP).

i.e. fiberglass.

Reinforced material is a new type of composite material developed in the early 20th century, which has many advantages such as light weight, high strength, anti-corrosion, heat preservation, insulation, sound insulation and so on. The earliest composite material to appear was fiberglass, which has nothing to do with steel. There is no iron in FRP at all, and it is not a composite of glass and steel.

In fact, FRP is a material made of glass fiber compounded with one or more thermosetting or thermoplastic resins, such as phenolic resins.

Epoxy resin, polyester resin.

polyimide resin, etc.

3. Carbon fiber.

It is a fibrous carbon material. It is a kind of strength greater than steel, less dense than aluminum, more corrosion-resistant than stainless steel, more resistant to high temperature than heat-resistant steel, and can conduct electricity like copper, with many valuable electrical, thermal and mechanical properties.

of new materials. Aircraft made of composite materials made of carbon fiber and plastic are not only lightweight, but also consume less power, have high thrust and less noise; An electronic computer made of carbon fiber.

disks, which can increase the storage capacity and computing speed of the computer; Carbon fiber reinforced plastics are used to make spacecraft such as satellites and rockets, which have high mechanical strength and low mass, which can save a lot of fuel.

Definitely carbon fiber is the best, ** is also very expensive, and generally the good ones are more than 1000.

ABS resin is one of the five major synthetic resins, its impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties are excellent, but also has the characteristics of easy processing, stable product size, good surface gloss, easy to paint, coloring, can also be surface spraying metal, electroplating, welding, hot pressing and bonding and other secondary processing, widely used in machinery, automobiles, electronic appliances, instrumentation, textiles and construction and other industrial fields, is a widely used thermoplastic engineering plastics.

Composite

Materials), is the composition of two or more materials with different properties on a macroscopic basis through physical or chemical methods. Various materials complement each other in terms of performance, resulting in a synergistic effect, so that the comprehensive performance of composite materials is better than that of the original materials and meets various requirements. The matrix materials of composite materials are divided into two categories: metal and non-metal.

Metal substrates are commonly used in aluminum, magnesium, copper, titanium and their alloys. Non-metallic matrices mainly include synthetic resins, rubber, ceramics, graphite, carbon, etc. Reinforcement materials mainly include glass fiber, carbon fiber, boron fiber, aramid fiber, silicon carbide fiber, asbestos fiber, whisker, metal wire and hard fine particles.

Glass fiber reinforced plastic (FRP), also known as GRP, is a fiber-reinforced plastic, which generally refers to a matrix of unsaturated polyester, epoxy resin and phenolic resin reinforced with glass fiber. Reinforced plastics with glass fiber or its products as reinforcing materials are called glass fiber reinforced plastics, or glass fiber reinforced plastics. Due to the different types of resins used, it is known as polyester FRP, epoxy FRP and phenolic FRP.

Light and hard, non-conductive, high mechanical strength, less utilization, corrosion resistance. It can be used instead of steel to make machine parts and shells of automobiles and ships.

Carbon fiber (carbon

fiber), as the name suggests, is a new generation of reinforced fibers that not only have the inherent intrinsic properties of carbon materials, but also have the soft processability of textile fibers. Compared to conventional glass fiber (GF), Young's modulus is its 3

times more; Compared with Kevlar fiber (KF-49), it not only has about twice the Young's modulus, but also does not dissolve or swell in organic solvents, acids and alkalis, and has outstanding corrosion resistance. In 1981, some scholars soaked Pan-based CF in the strong alkali NaOH

In solution, more than 30 years have passed, and it still retains its fibrous form.

Difference: Carbon fiber material is the material with the highest mass-strength ratio. Materials can be distinguished according to the cross-section, and the specific performance can not be distinguished by the naked eye, and can only be tested by destructive tests.

Among them, ABS is anisotropic, FRP and carbon fiber composites are anisotropic, and the tensile strength in the fiber direction is the highest.

The impact resistance, solvent resistance and aging resistance of PP are stronger than ABS, and the commercially available helmets have instructions that the material is the former, please give preference to the former. ABS is only easy to process and mold**, but its properties are far inferior to polyolefin molecules. Here's a practical explanation:

Solvent resistance: PP is resistant to general organic solvents, ABS is not resistant to acetone, xylene and ethyl acetate, etc., and will be whitish and swollen when immersed in ethanol.

Impact resistance: The strength modulus of PP is at least twice that of ABS, and it is not easy to produce brittleness and stress breakage.

Aging resistance: PP is commonly found in 10-year life of plumbing pipe fittings, which company uses ABS for water pipes? Thermal expansion and cold contraction are easy to crack.

Due to the influence of the PAN and PS ends in the copolymer structure, ABS is only suitable for rapid hot melt molding as shells, and the advantages are limited to this.

This question has been supplemented and revised since November 23, 2021, and has replaced the previous version on December 22, 2020).

FRP material is good! Its hardness is quite good, but ABS It is also an engineering plastic, from the characteristics but generally ABS has good fluidity Gloss ** cheap, used in some shells of household appliances; FRP is different, it has toughness and hardness, and the helmet is used to protect the head from the collision of low-grade and harder foreign objects, so ABS is not very good! Ordinary FRP helmets, in fact, the protective performance is not good at all, only the outer layer and the inner layer of two layers of fiberglass, and the middle is epoxy resin, very brittle, so under the strong external impact, the FRP helmet is easy to crack, so I think that the FRP helmet as a motorcycle helmet is unreasonable, and the user will bear a great threat to life.

If you value life and don't spare money, it is recommended to buy carbon fiber.

Of course it is good for ABS material. ABS is an engineering plastic, and its strength, toughness, life and other indicators are better than ordinary plastics. The washing machine and refrigerator liner are all made of ABS engineering plastics, and ordinary polypropylene materials must not be used.

PC material is better. ABS+PC refers to a trolley case made of ABS material mixed with PC material and PC material plus a layer of PC film.

The performance is between ABS and PC, and the slag cleaning combines the characteristics of both.

ABS material is denser, harder, and lower, but heavier, because it is hard, it may crack after impact, so it is not very practical. PC material is light and flexible, wear-resistant and heat-resistant, with better impact resistance and resilience, but the cost is relatively high, so the ABS+PC trolley case is still very durable.

Meaning:

Generally, the PC material is good, but some ABS materials are not bad, such as 747 and so on. The impact toughness of PC material is better than that of ABS, of course, **Huipai is also higher, but the anti-notch ability is relatively poor. Now there are very few pure ABS bags on the market, most of them are ABS substrate with PC film, so that the surface is brighter, and it also increases its impact resistance.

When you buy, you must ask clearly, many merchants use ABS+PC as PC to sell.

What material is better for the helmet, ABS or PC?

The helmet material is divided into three grades, the lowest grade is ABS composite, followed by FRP material, and the best material is carbon fiber composite. ABS composite material, ABS may not be smashed, but the compressive strength and rigidity are too poor, it is easy to smash and deform, and the protection ability is very limited. FRP is a glass fiber reinforced material, which is a material composed of glass fiber and one or several thermosetting or thermoplastic resins; Pressure, impact resistance and rigidity are much higher than ABS, but they will be heavier.

Carbon fiber is a new type of material with greater strength than steel, smaller density than aluminum, more corrosion-resistant than stainless steel, more resistant to high temperature than heat-resistant steel, and can conduct electricity like copper, and has many valuable electrical, thermal and mechanical properties.

Protection capacity in order: ABS "FRP" carbon fiber composite materials.

Helmet requirements are simply put, mainly two points, one is not broken, but not deformed, and the weight is also important.

ABS may not be smashed, but the compressive strength and rigidity are too poor, it is easy to smash and deform, and the protection capacity is very limited.

FRP pressure, impact resistance and rigidity are far more than ABS, but it will be heavier.

Carbon fiber composite materials are much more than FRP, and very light, is an ideal helmet material, but its cost is also dozens of times more than the previous two.

<> above performance parameters for reference.

Carbon fiber helmets have been widely used, if necessary, you can come to our factory to feel the performance of carbon fiber products.

1.Brief introduction.

Whether the helmet material is better ABS or PC material has always been a topic of concern. ABS is short for polystyrene-butadiene-styrene copolymer, while PC refers to polycarbonate. Both of these materials have very good impact resistance and are often used in the manufacture of safety protection products such as helmets and protective masks.

But which material is better? This article will detail the characteristics of ABS and PC materials and their application fields, so that readers can have a more comprehensive understanding.

2.Features of ABS material.

ABS material has excellent mechanical properties, is a high-strength, low-weight composite material, often used in the production of protective masks, mobile phone shells, auto parts and other products. Compared with PC material, ABS has a lower quality, and has better formability, easy to process and process molding, and it is more convenient to dye and spray.

3.Characteristics of the PC material.

PC material is a polymer with excellent mechanical properties and high impact resistance, so it is widely used in aerospace, construction, transportation and other fields. The PC helmet has good transparency and scratch resistance, and also has the effect of anti-ultraviolet rays, so it is more suitable for occasions that require a better field of vision. Although the texture of PC material is light, it is high and difficult to process.

4.Comparison of the advantages and disadvantages of ABS and PC materials.

Both ABS and PC materials are excellent protective materials, but each has its own unique advantages and disadvantages. ABS grades are relatively common,** lower,** and are easier to process and spray, but can deform or even dissolve in high temperatures or acidic environments. The PC material has better impact strength and protective performance, but its ** is higher and has poor heat resistance, and it is also greatly affected by humidity.

5.Applicable fields of ABS and PC materials.

ABS material is suitable for manufacturing products that require high color and surface treatment, such as mobile phone training simple shells, indoor and outdoor furniture, etc. The PC material is suitable for products that require high transparency and impact resistance, such as helmets, safety equipment, construction, automotive, aerospace and other fields.

6.Summary.

In the field of security such as helmets, PC materials are widely used. In contrast, ABS material** is more affordable, but its impact resistance and transparency are poor, so PC material has better impact resistance. When buying a helmet, you need to choose the right material according to your needs and budget.

Children use eps well. EPS foam liner EPS foam liner is different from general foam and soft plastic; The elastic cushioning capacity is better, the weight is light, and it is suitable for 2-5 year old babies. ABSABS is also ABS plastic, with high gloss, easy colorability and easy processing, cheap, good elasticity and toughness, but pay attention to the safety of the material, odor, dyeing and other harmful factors.

In addition, ABS plastic has a certain hardness and is not soft enough, so it is more suitable for children over 8 years old. For children around 12 years old, some parts may be used, the impact and protection strength is better than a good helmet, but the same leakage is heavy, there will be damage to the child's cervical spine head, which is why it is rare to see children wearing FRP helmets.