PEEK Plastic Granule Chemical Resistance
Internationally-known SWER is one of the most chemical-resistant indicators that is required to be used in the toughest fields.
PEEK, as poor as it conducts, is still susceptible to acids of high strength like a sulfur and nitro.
Looking at the technicalities, 20% - 30% nitric acid concentrations are used for passivation cases wherein the acidity is very much an importance factor.
Glass Filled PEEK Granule
Glass fiber modified PEEK (polyetheretherketone) is a composite material that reinforces PEEK resin by adding glass fiber (glass fiber).
PEEK Carbon Fiber Properties
1.This, by virtue of the glass fiber reinforced PEEK, scores much higher than pure PEEK in mechanical strength. Often, neat PEEK is known for tensile strength of 90-100MPa, following the addition of 30% glass fiber this strength smashes well up to 140-160 MPa. This figure may also rise when the glass fiber percentage is 40%. Despite the fact that the rate of augmenting this parametr drops above the 40% concentration of the glass fiber but, still, it has a great value in “Composite Materials Science and Engineering.”
2.Many things influence the PEEK and especially glass fibers, such as the market demand and raw material price fluctuations. Unable to provide actual figures in this case Nevertheless, PEEK weaved with glass fibers are relatively inexpensive when compared to carbon fiber-reinforced composite PEEK and are therefore a low-cost alternative to it. In general, PEEK products usually retail from $0.1-$10.00 a gram, based on the inherent brand category, certain grades, and bulk order.
3.Glass/carbon fiber-reinforced PEEK polymeric material, which is easily fabricated via the direct molding methods, has been shown to have the exact characteristics of HR-PEEK and can be ranked as the next generation of biocompatible implant material in orthopedic applications. By utilization of such procedures the billet could be made into a variety of complex forms that are capable to serve multitude of industrial performance tasks.
4.The percentage of glass fibers generally lies within a range from 5% to 60%; if special requirements, corresponding values are determined. In the range of less than 30% of glass fiber, the work on the improvement of material mechanical strength is carried out, and starting from 30% and further, the work is carried out to increase the material’s modulus. The fibers with up to 40% of the element added on, the strength and modulus show the linear addition of the material. Greater than 40% once the strength gain has slowed up, modulus still increases, thus for those cases where maximum resistance is required, this is a fundamental element.
5.Tensile test verifies that the initial modulus of PEEK while adding 10-20% glass fibers and varying around 100-200 MPa is remained the same during the deformation process. This vital fact is extremely evident that glass fibers provide a backbone for the structure of PEEK so that it remains stable under the stress of pulling apart.
PEEK Carbon Fiber
Pure virgin unfilled PEEK represents products without any addition of reinforcing fillers; demonstrate the property of pure resin, 100% polyether ether ketone. This elastic plastic is shown to be unbeatable to all other competing materials for its remarkable mechanical properties, heat resistance, and exceptionally high wear- and corrosion- resistant characteristics. Almost never-changing PEEK particles embody the unmodified characteristics of unflavored PEEK resin by eliminating any incorporations of additives such as glass and carbon fibers.
Unfilled PEEK Granule Properties
1.The empty PEEK (polyether ether ketone) demonstrates a strong resilience after the successful pass of all the mentioned below tests and the ISO-527 Standard. This material returns 5% absolute strain when stress level is in the range of 0~100MPa only; hence the superiority in its toughness and sturdiness. This data not only demonstrates the robustness of an unfilled PEEK but also how well it is like this to perform under stressing conditions.
2.The thermal tests in 23°C and 120°C also demonstrate the minor output losses due to the PEEK materials with no reinforcing agents. Yet this material is able to withstand up to 10 million fatigue cycles of testing at 100MPa especially at 23 °C, that means this material is too hard but very durable under repeated loads. The methods that involve the application of stress, in a prescribed range from 10% to 100% of the maximum target restraining force coupled with the oscillation frequency of 5Hz, in a sawtooth manner in accordance with ISO requirements, provide the opportunity to measure the material properties of resistance to fatigue under 1,000,000 cycles, respectively.
PEEK Carbon Fiber Granule
Carbon fiber modified PEEK (polyetheretherketone) is a high-performance peek carbon fiber composite material that adds thermoplastic carbon fiber to PEEK resin. The addition of carbon fiber significantly improves the mechanical properties of composite materials, making it an ideal choice for manufacturing high-demand engineering parts such as ABS pump rotors, high-speed impellers, and clutch forks.
PEEK Carbon Fiber Properties
1.High specific strength: The specific strength of carbon fiber modified PEEK far exceeds that of aluminum alloy. Specifically, the tensile strength of ordinary aluminum alloys (such as 7075 series) is about 530 MPa, while the tensile strength of carbon fiber reinforced PEEK can reach 1500 MPa. or higher. This means that the specific strength of carbon fiber modified PEEK is at least three times that of aluminum alloy. The introduction of carbon fiber has greatly improved the load-bearing capacity of composite materials while maintaining the advantage of being lightweight, which is particularly important for aerospace, automotive and other fields.
2.Wear resistance: Compared with unmodified PEEK, peek carbon fiber prepreg shows significantly improved wear resistance, and the wear resistance can be increased by more than 50%. This improvement reduces the rate of wear over long periods of use, extending the life of the part.
3.Corrosion resistance: PEEK itself is a high-performance engineering plastic known to have excellent chemical resistance. It can withstand a wide range of chemicals, including most acids, bases and solvents. For example, according to literature reports, when 30% carbon fiber PEEK is contacted with concentrated sulfuric acid (98%) at room temperature, its mass loss is very small, and the annual loss rate may be less than 0.1%. This means that PEEK remains stable in extremely harsh chemical environments without significant degradation due to chemical corrosion.
4.Formula proportion range and adjustment purpose:
The proportion of carbon fiber in composite materials usually ranges from 5% to 60%, and different proportions are suitable for different application requirements:
Proportion within 30%: mainly used to improve the strength of the material. Within this proportion range, increasing the proportion of carbon fiber can effectively increase the tensile and compressive strength of the material.
Ratio above 30%: The focus shifts to increasing the modulus of the material. Although the carbon fiber content exceeding 30% no longer significantly increases the strength of the material, it can significantly increase the stiffness of the material and is suitable for applications requiring high modulus.
5.The effect of adjusting the proportion:
When the addition amount is less than 30%, the strength and modulus of the material are positively related to the addition ratio, that is, as the carbon fiber content increases, the strength and stiffness of the material also increase.
When the content exceeds 30%, the strength improvement effect of continuing to increase the carbon fiber content is weakened, but the modulus (i.e. stiffness) of the material will still increase. This is critical for designing parts that require specific stiffness rather than extreme strength.
