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[Prosthetics] You know what? There are three main materials for prosthesis receiving cavity
2023-02-17
The thigh prosthesis is composed of a receiving cavity, a knee joint and a connector, among which the receiving cavity is the connecting part of the stump and the prosthesis, and its constituent materials have a great influence on the experience of use. There are three main materials used to make prosthetic chambers: resin, PP sheet and carbon fiber. Each receiving cavity has different characteris...
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What properties will change when fiber reinforced material is added?
2023-02-21
Fiber reinforced plastics is one of the most common reinforced plastics. Fiber reinforced plastics usually have the following characteristics. High strength and high modulus The quantity strength and modulus of fiber reinforced are obviously improved. Such as some general plastics after reinforcement, can also be used in engineering plastics; Some engineering plastics, through fiber reinforcement,...
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3 minutes to understand TPU material
2023-02-21
What is the TPU material? TPU(Thermoplastic polyurethanes) name is thermoplastic polyurethane elastomer rubber, TPU is a kind of polymer material between rubber and plastic, which is synthesized by reaction polymerization of diphenyl methane diisocyanate (MDI), toluene diisocyanate (TDI) and other diisocyanate molecules with macromolecular polyols and low molecular polyols (chain extender). It has...
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The differences, advantages and disadvantages of PP copolymerization and homopolymerization
2023-02-24
Polypropylene (PP) is divided into homopolymer polypropylene (PP-H), block (impact resistance) copolymer polypropylene (PP-B) and random (random) copolymer polypropylene (PP-R), so what are the advantages and disadvantages of all kinds of PP? I'll share it with you here. 1. Homopolymer polypropylene (PP-H) It is made by polymerization of a single propylene monomer. The molecular chain does not con...
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Polyamide 12 LFT: Benefits and applications
2024-01-16
What is PA12-LCF? PA12-LCF is a thermoplastic material, belonging to the nylon class. PA12-LCF is based on nylon 12, which has 12 carbon atoms in each polymer repeat unit. Nylon 12 is also known as polyamide 12 or PA12. It is a semi-crystalline material with a high melting point (180°C) and a low moisture absorption rate (0.5%). It is also resistant to chemicals, wear and impact. PA12-LCF is a mod...
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Modified PP plastic materials in the field of home appliances
2024-01-24
HIPS and ABS are the first plastic materials used in household appliances, due to the high price of HIPS and ABS resin, the market has gradually developed PP(polypropylene) modified materials suitable for household appliance parts, and partially replaced HIPS and ABS resin in household appliance products with its advantages of low cost, light weight and good performance. Now the modified PP plasti...
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Why do injection molded parts develop sink marks and dimples?
2024-09-02
(1) Improper control of molding conditions If the injection pressure is too low, the injection and holding time is too short, the injection speed is too slow, the material temperature and mold temperature are too high, the cooling of the plastic part is insufficient, the temperature is too high during demolding, the temperature around the insert is too low, or there is insufficient material supply...
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(Ⅰ) How to deal with flow marks on injection-molded parts?
2024-09-27
(1) P: Poor flow of the molten material leads to the formation of concentric flow marks resembling growth rings on the surface of injection-molded parts, centered around the gate. When low-temperature, high-viscosity molten material with poor flow performance is injected into the cavity in a semi-cured, fluctuating state through the injection port and runner, the material flows along the cavity su...
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