PEEK Medical Injection Parts

PEEK is the abbreviation of Polyetheretherketone, the Chinese name is polyetheretherketone resin, PEEK medical injection parts is a high-end special engineering plastics.

●Low creep

●High modulus of elasticity

●Excellent friction properties

●Extremely wear resistant

●Resist the erosion of various media, comply with FDA certification, non-toxic

●Very good chemical resistance

●Flame retardant

Polyether ether ketone and polyphenylene sulfide (PPS), polysulfone (PSF), polyimide (PI), polyarylate (PAR), liquid crystal polymer (LCP) are called 6 major special engineering plastics.

The main products of Zhongwei Precision Machinery Co., Ltd. are nylon products, plastic products, ABS series, rubber products, etc. Types of injection molding materials that can be processed: polyethylene (PE), polypropylene (PP), nylon (PA, PA6, PA66), polyoxymethylene (POM), ABS, polyurethane (TPU), polyphenylene sulfide (PPS), polystyrene Carbonate (PC), Polyetheretherketone (PEEK), etc.

Product Description

1. Implementation standards: the company strictly implements ISO9001, ISO14001, IATF16949, VDA6.3 certification, and products have passed ROHS, FDA EU certification, etc.

2. Product material standards: ISO, GB, ASTM, SAE, EN, DIN, BS, AMS, JIS, ASME, DMS, TOCT, GB

3. Main processes: plastic injection molding, metal insert injection molding, investment casting, die-casting aluminum

4. Available materials for injection molding:

Processable nylon products, plastic products, ABS series; injection molding material types: polyethylene (PE), polypropylene (PP), nylon (PA, PA6, PA66), polyoxymethylene (POM), ABS, polyurethane (TPU), poly Phenyl sulfide (PPS), polycarbonate (PC), polyether ether ketone (PEEK) and 3D printing can be customized according to customer requirements.

At present, peek is sometimes used in disinfection cabinets and wireless verification systems, which is quite stainless steel. Polyether ether ketone resin (Polyether Ether Ketone, PEEK resin for short) is a condensation reaction of 4,4'-difluorobenzophenone and hydroquinone in the presence of alkali metal carbonate, using diphenyl sulfone as a solvent. A new type of semi-crystalline aromatic thermoplastic engineering plastic is prepared. It is a high temperature resistant thermoplastic with high glass transition temperature ( 143 ℃ ) and melting point ( 343 ℃ ), the thermal deformation temperature under load is up to 316 ℃ (30% glass fiber or carbon fiber reinforced grade), and it can be used for a long time at 250 ℃ Compared with other high-temperature-resistant plastics such as PI, PPS, PTFE, PPO, etc., the upper limit of the operating temperature is nearly 50 °C higher; PEEK resin not only has excellent heat resistance than other high-temperature-resistant plastics, but also has high strength, high modulus, High fracture toughness and excellent dimensional stability; PEEK resin can maintain high strength at high temperature, its flexural strength at 200°C is about 24MPa, and its flexural strength and compressive strength are still 12~13MPa at 250°C; PEEK The resin has high rigidity, good dimensional stability, small linear expansion coefficient, and is very close to metal aluminum materials; it has excellent chemical resistance. In ordinary chemicals, only concentrated sulfuric acid can dissolve or destroy it, it Its corrosion resistance is similar to that of nickel steel, and at the same time, it has flame retardancy, releases less smoke and toxic gases under flame conditions, and has strong radiation resistance; PEEK resin has good toughness and excellent fatigue resistance to alternating stress. The most outstanding among plastics, comparable to alloy materials; PEEK resin has outstanding tribological properties, excellent resistance to sliding wear and fretting wear, especially can maintain high wear resistance and low friction coefficient at 250 ° C; PEEK resin is easy to be extruded and injection molded, with excellent processability and high molding efficiency. In addition, PEEK also has excellent properties such as good self-lubrication, easy processing, stable insulation, and hydrolysis resistance, making it widely used in aerospace, automobile manufacturing, electrical and electronic, medical and food processing and other fields, and its development and utilization prospects are very promising broad.

PEEK Processing

PEEK material can be processed by injection molding and bar machine form or ideal products. It is not economical for designers to use injection molding when designing PEEK product patterns or small batch PEEK parts. It is usually produced by machining. PEEK material can be processed and finished deburring with the same equipment technology as other engineering plastics. Because PEEK material has good wear resistance and good physical properties, it is generally recommended to use cemented carbide, diamond turning tools and drill bits to operate.

When processing PEEK medical injection parts, it is generally necessary to pre-toughen the peek rod or peek plate, which can remove the stress and residual stress in the parts. Localized temperature increases during machining lead to the production of more stress in the material so that the product can be subjected to a secondary stress relief toughening treatment.

Post Injection Molding Process

1. Processing equipment: CNC, WEDM, lathe, milling machine, drilling machine, grinder, etc.;

2. Surface treatment: For some products that require subsequent processing, we can provide surface treatment services to achieve the special purpose of customers. At present, we can provide degreasing, polishing, electroplating (gold, silver, nickel, tin, galvanized, etc.), anodizing, electrophoresis and other surface treatment services for precision parts.

Moulds and Inspection Fixtures

1. Mold service life: usually semi-permanent. (except for lost foam)

2. Mold delivery time: 10-25 days, (according to product structure and product size).

3. Tooling and mold maintenance: Zhongwei is responsible for precision parts.

Quality Control

1. Quality control: the defective rate is less than 0.1%.

2. Samples and trial run will be 100% inspected during production and before shipment, sample inspection for mass production according to ISDO standards or customer requirements

3. Testing equipment: automated visual inspection equipment can carry out 100% inspection of products, spectrum analyzer, golden elephant analyzer, three-coordinate measuring machine, hardness testing equipment, tensile testing machine.

Application

Peek is widely used in aerospace, automobile manufacturing, electrical and electronic, medical and food processing and other fields.