眾所周知，聚四氟乙烯板因其優(yōu)越的綜合性能而被廣泛的應(yīng)用在國(guó)民經(jīng)濟(jì)的各個(gè)領(lǐng)域，不過(guò)聚四氟乙烯有個(gè)很大的缺點(diǎn)--表面非常光滑，很難和其他的材料粘結(jié)在一起，這對(duì)它的使用范圍造成很大的局限性。為了讓聚四氟乙烯的應(yīng)用范圍更廣更不受限制，目前已經(jīng)有了商品級(jí)別的聚四氟乙烯表面處理劑，這種處理劑又被稱為鈉化處理劑，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處理。鈉化處理劑是為了提高粘接性能，用作處理塑料、填料、顏料和粘接載體等表面的物質(zhì)。聚四氟乙烯鈉化處理劑就是為了提高聚四氟乙烯粘接性能，擴(kuò)大聚四氟乙烯的應(yīng)用范圍，經(jīng)聚四氟乙烯鈉化處理劑處理的聚四氟乙烯表面具有親水性，可用一般的膠水粘接聚四氟乙烯。主要是黑色糊狀物剪切強(qiáng)度：9.8Mpa處理后的聚四氟乙烯薄膜表面電阻：與未處理膜相比降低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.　　貯存期（密封保存）1年以上。聚四氟乙烯板處理后的聚四氟乙烯表面不耐紫外光照射，在強(qiáng)紫外光長(zhǎng)期照射下，會(huì)失去處理效果。因此，處理后的聚四氟乙烯如不及時(shí)膠接，應(yīng)避光保存。使用方法用棉花沾丙酮將予處理的聚四氟乙烯表面擦洗干凈、晾干，然后用玻璃棒將處理劑攪勻。小面積處理時(shí)，用玻璃棒沾適量的處理劑平放于待處理塑料表面上，轉(zhuǎn)動(dòng)玻璃棒，是棒上的處理劑均勻地涂到塑料表面上；刷涂時(shí)，要用聚乙烯刷（不得用一般毛刷），并要朝一個(gè)方向刷，不可回刷，、聚四氟乙烯鈉化處理劑裝于密閉瓶中，貯存于陰涼、遠(yuǎn)離火源和水源處，按易燃危險(xiǎn)品運(yùn)輸。本品有強(qiáng)烈的腐蝕性，使用時(shí)應(yīng)戴好防護(hù)眼鏡和膠皮手套，一旦皮膚接觸處理劑，應(yīng)立即用水沖洗干凈。本品包裝瓶開蓋后，瓶口密封圈易破損，失去密封作用，因此要在短期內(nèi)將處理劑用完，否則應(yīng)檢查瓶口妥善密封。聚四氟乙烯表面處理劑廣泛應(yīng)用于聚四氟乙烯乙烯粘接領(lǐng)域，特別在聚四氟乙烯緊襯里方面，應(yīng)用前景廣闊。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.　　萘鈉處理液配制工藝：　　聚四氟乙烯板配制萘鈉處理液及處理聚四氟乙烯制品工藝，其特征是：配制萘鈉處理液工藝步驟為處理劑厚度應(yīng)控制在0.5毫米左右。對(duì)于小塑料件，如果允許整個(gè)處理，可將部件浸于處理劑中，用這種方法處理的聚四氟乙烯，表面顏色均勻，效果好。步驟一：選取作為化學(xué)純的新鮮鈉、細(xì)精萘；作為分析純的四氫呋喃的材料；步驟二：按單位為１０００ｍｌ四氫呋喃為基準(zhǔn)，將１０００ｍｌ四氫呋喃加入３０００ｍｌ三口燒瓶中，放入冰浴中攪拌冷卻；溫度控制在２０℃至３０℃；步驟三：在室溫和常壓下慢慢加入細(xì)精萘４９０ｇ至５２０ｇ攪拌均勻后，為使反應(yīng)充分，將９０ｇ至９５ｇ新鮮鈉片分三次至四次緩慢加入容器，每次中間隔２０分鐘至４５分鐘，并不斷攪拌，使之全部溶解；溶液呈墨綠色或黑褐色，反應(yīng)過(guò)程略放熱，嚴(yán)防水侵入；步驟四：將配制好的萘鈉處理液放入密封容器中保存待用，并放在避光處；萘鈉處理液處理聚四氟乙烯制品工藝步驟為：步驟一：先對(duì)已車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，除去表面油污和臟物；步驟二：在室溫下將清潔的聚四氟乙烯制品浸入盛有放入已配制好的萘鈉處理液內(nèi)浸漬１分鐘至１０分鐘后取出；步驟三：先用常溫水清洗，放入９０℃熱水中清洗，除去ＮａＨ和ＮａＯＨ等殘留物，待聚四氟乙烯表面呈深棕色，既為處理完畢，聚四氟乙烯板晾干或用烘箱烘干，再?gòu)?fù)卷；步驟四：用遮光膜包裝待用。以上各種處理方法，處理時(shí)間均為1--5分鐘，處理后，先用丙酮洗去聚四氟乙烯表面上的處理劑殘?jiān)儆盟逑锤蓛?，干燥室?nèi)陰干，不可室外紫外光照射）后即可膠接。廢處理劑經(jīng)少量乙醇處理，使其完全失去黑色，方可倒掉，大量使用處理劑時(shí)，其殘?jiān)?jīng)酸中和至中性，包裝、貯存和運(yùn)輸：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.