描述

PEEK注塑级塑料

耐高温性：PI在高温下大大超过PEEK

高强度：PPS、PI、PAI等材料可以取代PEEK

耐化学性：氟塑料在这方面超过PEEK

耐磨性：可以取代PI、POK、氟塑料、超高分子量PE等

PEEK注射级塑料

产品详细信息

聚醚醚酮注塑级塑料

聚醚醚酮，英文名称聚醚醚酮。rketone（简称PEEK），其组成单元为氧-p-sub*-氧-p-sub*-羰基-p-sub*，是一种半结晶的热塑性聚醚醚酮，仅次于聚四氟乙烯（PTFE），是一类受欢迎的抗摩擦材料。与PTFE相比，它的承载能力和精度性能有了很大提高。可用于防滑、低速、高负荷等恶劣环境，也可用于液体、固体粉尘污染等恶劣环境，有取代传统金属材料的趋势。PEEK具有较高的机械强度、耐热性、摩擦性、耐化学性、耐水分解性等，以及优异的加工性能。它易于注射成型、挤出成型、压缩成型和切割加工。注射成型不是后处理，例如热处理是获得复杂成型产品所必需的。目前，PEEK作为一种高消耗性、耐热性、耐化学性和低密度的材料被用于汽车等交通领域。此外，在电气和电子领域，它被用作一种具有耐化学性和耐热性的材料，聚醚醚酮是由4,4-二氟二酮和对苯二酚在碱溶液中组成，在金属盐存在下通过亲核置换反应制备而成，具有产气量低、电性能（导电性或绝缘性）优异的材料，受到人们的关注，其应用领域正在逐步扩大。缩合反应在150～140℃进行。初始温度应较低，以避免对二苯酚的损失，并减少副反应。然后慢慢提高温度，使聚合物溶解。当温度达到320℃时，反应完成，聚合物相对稳定，分子质量取决于反应物二氟二酮与对苯二酚的摩尔比。如果二氟二酮稍微过量（5%），聚合物将具有氟端基。氟端基比酚羟基端基具有更好的热稳定性。碱金属碳酸盐的选择非常重要。它会影响聚合物的物理性质，尤其是决定聚合物脆性和颜色的凝胶量。所选金属碳酸盐是碳酸钠和碳酸钾的混合物。如果比例太低，聚合物就会变脆；如果比例过高，会发生副反应，这也会影响最终产品的性能。众所周知，纯树脂一般不能直接使用，在使用前必须添加某些填料、增强材料和添加剂，使其成为塑料。PEEK通常以填充或增强塑料的形式应用。通常添加的填料是PTFE、固体填料等，但主要使用玻璃纤维和碳纤维。制备方法是用单螺杆或双螺杆挤出机将PEEK树脂、填料和增强材料按配方要求混合挤出

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PEEK Injection Grade Plastic

High temperature resistance: PI greatly exceeds PEEK in high temperature
High strength: PPS, PI, PAI and other materials can replace PEEK
Chemical resistance: Fluoroplastics surpass PEEK in this respect
Wear-resistance: PI, POK, fluoroplastic, ultra-high molecular weight PE, etc. can be replaced

PEEK Injection Grade Plastic

Product Details

PEEK injection grade plastic

Polyether ether ketone, the English name polyetherethe. rketone (referred to as PEEK), its constituent unit is oxygen-p-sub*-oxy-p-sub*-carbonyl-p-sub*, is a semi-crystalline, thermoplastic, polyether ether ketone is after polytetrafluoroethylene (PTFE), and A popular class of anti-friction materials. Compared with PTFE, it has greatly improved load-bearing capacity and precision performance. It can be used in harsh environments such as non-slip, low-speed and high-load, or in harsh environments such as liquid and solid dust pollution, and has a trend to replace traditional metal materials. PEEK has high mechanical strength, heat resistance, friction resistance, chemical resistance, water decomposition resistance, etc., as well as excellent processability. It is easy to injection molding, extrusion molding, compression molding and cutting processing. Injection molding is not Post-processing such as heat treatment is necessary to obtain complex molded products. At present, PEEK is used in transportation fields such as automobiles as a material with high consumption resistance, heat resistance, chemical resistance, and low density. In addition, in the electrical and electronic fields, it is used as a material with chemical resistance and heat resistance. , Low gas generation, excellent electrical properties (conductivity or insulation) materials, attracting attention, its application fields are gradually expanding, polyether ether ketone is composed of 4,4-difluorodione and hydroquinone in alkali It is prepared by nucleophilic displacement reaction in the presence of metal salt. The condensation reaction is carried out at 150～140℃. The initial temperature should be low to avoid loss of p-diphenol and reduce side reactions. Then slowly increase the temperature to dissolve the polymer. When the temperature reaches 320℃, the reaction is complete and the polymer is relatively The molecular mass depends on the molar ratio of the reactant difluorodione to hydroquinone. If the difluorodione is slightly excessive (5%), the polymer will have fluorine end groups. Fluorine end groups have better thermal stability than phenolic hydroxyl end groups. The choice of alkali metal carbonate is very important. It will affect the physical properties of the polymer, especially the amount of gel that determines the brittleness and color of the polymer. The selected metal carbonate is a mixture of sodium carbonate and potassium carbonate. If the ratio is too low, the polymer will be brittle; if the ratio is too high, side reactions will occur, which will also affect the performance of the final product. As we all know, pure resin generally cannot be used directly, and certain fillers, reinforcing materials and additives must be added to make it into a plastic form before it can be used. PEEK is usually applied in the form of filled or reinforced plastic. The fillers that are often added are PTFE, solid fillers, etc., but glass fiber and carbon fiber are mostly used. The preparation method is to use a single or twin screw extruder to mix and extrude the PEEK resin, fillers and reinforcing materials according to the formula requirements.

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