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聚四氟乙烯板因其优越的综合


发布时间:2017-11-16 9:46:23 来源: 浏览次数:

摘要:众所周知,聚四氟乙烯板因其优越的综合性能而被广泛的应用在国民经济的各个领域,不过聚四氟乙烯有个很大的缺点--表面非常光滑

    上一篇我们送上的文章是聚四氟乙烯板是由聚四氟乙烯树脂压胚为了更加全面的介绍聚四氟乙烯的各项性能、规格、参数等等,我们将持续发布最新知识,帮助大家了解更多的信息。

 众所周知,聚四氟乙烯板因其优越的综合性能而被广泛的应用在国民经济的各个领域,不过聚四氟乙烯有个很大的缺点--表面非常光滑,很难和其他的材料粘结在一起,这对它的使用范围造成很大的局限性。为了让聚四氟乙烯的应用范围更广更不受限制,目前已经有了商品级别的聚四氟乙烯表面处理剂,这种处理剂又被称为钠化处理剂,它可以用于聚四氟乙烯管材·薄膜·板材·填充聚四氟乙烯等制品的表面处理。钠化处理剂是为了提高粘接性能,用作处理塑料、填料、颜料和粘接载体等表面的物质。聚四氟乙烯钠化处理剂就是为了提高聚四氟乙烯粘接性能,扩大聚四氟乙烯的应用范围,经聚四氟乙烯钠化处理剂处理的聚四氟乙烯表面具有亲水性,可用一般的胶水粘接聚四氟乙烯。主要是黑色糊状物剪切强度:9.8Mpa处理后的聚四氟乙烯薄膜表面电阻:与未处理膜相比降低1--2次方。

Blockage or isolation.All kinds of PTFE gasket, PTFE gasket and adhesive used in static PTFE gasket belong to this category. For dynamic seals, leakage occurs mainly at high and low pressure connections and phasesThere must be a gap between the parts of motion and relative motion. As long as the gap plug, can prevent or reduce leakage, soft packing PTFE gasket belongs to this category. Isolated leak throughRoad, that is, in the leakage channel set up obstacles, so that the channel cut off (at the same 
time leakage is cut off), mechanical PTFE gasket, oil seal and other contacts, PTFE gaskets belong to this category.Separation or interval.The leakage point is separated from the outside by using PTFE gasket, and the gas and liquid are used as the middle PTFE gasket fluid. Such as mechanical PTFE gasket, diaphragm PTFE gasket,Air cushion PTFE gasket, double end mechanical PTFE gasket with sealing liquid in the middle.Adhesion or adhesion.The PTFE gasket surface is bonded by using the processing quality of the PTFE gasket surface, or the PTFE gasket is applied to the PTFE gasket surface to reach the PTFE gasketFor example, the PTFE gasket, PTFE gasket, PTFE gasket and so on.Welding or pressing.Using welding or brazing method, the leakage point is blocked or pressurized to make the contact deformation (such as PTFE gasket seal, soft packing, PTFE gasket, etc.), forming a 
ixed combination to reach PTFEPTFE gasket, such as gasket, PTFE gasket, soft packing PTFE gasket and so on.Extraction or injection.The leakage flow back to the suction chamber or the suction side is usually low (such as exhaust ejector PTFE gasket, PTFE gasket etc.) or will be fluid fluid harmless PTFE gasketInjection of PTFE gasket chamber, to prevent PTFE gasket fluid leakage, such as cushion gas PTFE gasket, nitrogen PTFE gasket and so on.The increase of leakage channel resistance.When the 
luid flows through the channel, it will encounter resistance. The size of the resistance is related to the pressure difference at the two ends of the channel, the length of the channel, the roughness of the wall, and whether the channel is slotted (suddenly enlarged and suddenly shrunk)Small) and so on. Therefore, under the same pressure difference, a number of teeth or grooves can be added to the channel to increase the resistance of the fluid during the leakage. So as to prevent or reduce leakage, such as labyrinth PTFEGasket, gap PTFE gasket and so on. Solution: to carefully check rubber ring problem, if it is water seal groove, the problem of mechanical parts should be replaced.
  贮存期(密封保存)1年以上。聚四氟乙烯板处理后的聚四氟乙烯表面不耐紫外光照射,在强紫外光长期照射下,会失去处理效果。因此,处理后的聚四氟乙烯如不及时胶接,应避光保存。使用方法用棉花沾丙酮将予处理的聚四氟乙烯表面擦洗干净、晾干,然后用玻璃棒将处理剂搅匀。小面积处理时,用玻璃棒沾适量的处理剂平放于待处理塑料表面上,转动玻璃棒,是棒上的处理剂均匀地涂到塑料表面上;刷涂时,要用聚乙烯刷(不得用一般毛刷),并要朝一个方向刷,不可回刷,、聚四氟乙烯钠化处理剂装于密闭瓶中,贮存于阴凉、远离火源和水源处,按易燃危险品运输。本品有强烈的腐蚀性,使用时应戴好防护眼镜和胶皮手套,一旦皮肤接触处理剂,应立即用水冲洗干净。本品包装瓶开盖后,瓶口密封圈易破损,失去密封作用,因此要在短期内将处理剂用完,否则应检查瓶口妥善密封。聚四氟乙烯表面处理剂广泛应用于聚四氟乙烯乙烯粘接领域,特别在聚四氟乙烯紧衬里方面,应用前景广阔。
Storage period (sealed storage) more than 1 years. PTFE treated PTFE surface is not resistant to ultraviolet radiation, and it will lose the treatment effect under strong ultraviolet radiation for a long time. Therefore, placeIf the PTFE is not bonded in time, it should be kept away from light. The surface of PTFE treated with cotton dipped in acetone was scrubbed and dried, and then treated with glass rod.When the small area is treated, the glass rod is dipped with the proper amount of treatment agent on the surface of the plastic to be processed, and the glass rod is rotated, and the treatment agent on the stick is evenly coated on the plastic surface, and the polyethylene brush is used when brushing(not using ordinary brush), and brush in one direction, not back brush, PTFE sodium treatment agent in sealed bottle, stored in a cool, far away from the fire and water sources, according to flammable dangerous goodsTransport. This product has a strong corrosive, should wear good protective glasses and rubber gloves, once the skin contact with the treatment agent, should immediately rinse with water. The bottle sealing ring is easy to break after the bottle is openedTherefore, it is necessary to check the proper sealing of the bottle mouth in the short run. PTFE surface treatment agent is widely used in the field of PTFE and ethylene bondingThe application prospect of PTFE lining is broad.
  萘钠处理液配制工艺:
  聚四氟乙烯板配制萘钠处理液及处理聚四氟乙烯制品工艺,其特征是:配制萘钠处理液工艺步骤为处理剂厚度应控制在0.5毫米左右。对于小塑料件,如果允许整个处理,可将部件浸于处理剂中,用这种方法处理的聚四氟乙烯,表面颜色均匀,效果好。步骤一:选取作为化学纯的新鲜钠、细精萘;作为分析纯的四氢呋喃的材料;步骤二:按单位为1000ml四氢呋喃为基准,将1000ml四氢呋喃加入3000ml三口烧瓶
中,放入冰浴中搅拌冷却;温度控制在20℃至30℃;步骤三:在室温和常压下慢慢加入细精萘490g至520g搅拌均匀后,为使反应充分,将90g至95g新鲜钠片分三次至四次缓慢加入容器,每次中间隔20分钟至45分钟,并不断搅拌,使之全部溶解;溶液呈墨绿色或黑褐色,反应过程略放热,严防水侵入;步骤四:将配制好的萘钠处理液放入密封容器中保存待用,并放在避光处;萘钠处理液处理聚四氟乙烯制品工艺
步骤为:步骤一:先对已车削好的聚四氟乙烯制品,包括有聚四氟乙烯板材或聚四氟乙烯薄膜用丙酮或酒精清洗,除去表面油污和脏物;步骤二:在室温下将清洁的聚四氟乙烯制品浸入盛有放入已配制好的萘钠处理液内浸渍1分钟至10分钟后取出;步骤三:先用常温水清洗,放入90℃热水中清洗,除去NaH和NaOH等残留物,待聚四氟乙烯表面呈深棕色,既为处理完毕,聚四氟乙烯板晾干或用烘箱烘干,再复卷;步骤四:用
遮光膜包装待用。以上各种处理方法,处理时间均为1--5分钟,处理后,先用丙酮洗去聚四氟乙烯表面上的处理剂残渣,再用水清洗干净,干燥室内阴干,不可室外紫外光照射)后即可胶接。废处理剂经少量乙醇处理,使其完全失去黑色,方可倒掉,大量使用处理剂时,其残渣要经酸中和至中性,包装、贮存和运输:然后倒掉。Preparation process of naphthalene sodium treatment solution:The process of preparing naphthalene sodium treatment solution and processing polytetrafluoroethylene product with polytetrafluoroethylene plate is characterized by preparing sodium naphthalene solution, the processing step is that the thickness of the treatment agent should be controlled at about 0.5 millimeters. For smallf the plastic parts are allowed to be treated, the components can be dipped into the treatment agent. The PTFE treated with this method has uniform surface color and good effect. Step 1: select fresh sodium as a chemical pureFine, refined as pure tetrahydrofuran; analysis of materials; step two: according to the unit is 1000ml tetrahydrofuran as a benchmark, 1000ml will join 3000ml three flasks of tetrahydrofuranIn the ice bath, stirring and cooling; temperature control at 20 to 30 DEG C; step three: under room temperature and atmospheric pressure gradually adding fine refined 490g to 520g after mixing evenly, in order to make the full reaction90g to 95g fresh sodium tablets were divided into three times to four times, slowly adding containers, each interval between 20 minutes to 45 minutes, and constantly stirring, make it all dissolved; solution is dark green or dark brownThe reaction process is slightly exothermic to prevent water intrusion; step four: the prepared naphthalene sodium treatment solution is put into the sealed container for storage and placed in the light avoiding place; and the naphthalene sodium treatment solution is used to treat the PTFE product processThe steps are as follows: first, the finished polytetrafluoroethylene products, including polytetrafluoroethylene sheets or polytetrafluoroethylene film, are cleaned by acetone or alcohol, and the surface oil and dirt are removed; step two:Clean the PTFE product at room temperature and immerse it into the prepared naphthalene sodium treatment solution. Immerse it for 1 minutes to 10 minutes, then remove it. Step three: wash it with warm water at first, then put it in 90 centigrade heatIn water cleaning, remove the residues such as NaH and NaOH, so that the surface of PTFE is dark brown, not only for processing, PTFE plate drying or oven drying, and then rewinding; step four: useBlack mask pack ready. The treatment time was 1--5 minutes. After treatment, acetone was used to wash off the residue of the treatment agent on the surface of PTFE, and then cleaned with waterDry indoor and outdoor shade, no UV irradiation) after bonding. The waste treatment agent is treated with a small amount of ethanol so that it completely loses itsblack color and can be drained away. When using a large amount of the treatment agent, the residue is in acidAnd to neutral, packaging, storage and transportation: and then dumped.

聚四氟乙烯板的分子构成有什么优势在下一篇继续做详细介绍,如需了解更多,请持续关注。
本文由聚四氟乙烯板因其优越的综合生产厂家扬中市东旭化工塑料有限公司于2017-11-16 9:46:23整理发布。
转载请注明出处:http://www.yz-dongxu.com/news/jusifuyixi-4368.html。
上一篇:聚四氟乙烯板是由聚四氟乙烯树脂压胚
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