Amanqaku ali-10 malunga noomatshini be-nylon eguquliweyo#iplastiki

I-nylon inentsebenzo ekhethekileyo, ngoko ke isetyenziswa kakhulu kwiimoto, kwizixhobo ze-elektroniki nezombane, kwizakhiwo zoomatshini, kwizixhobo zemidlalo, kwimpahla yokunxiba, njl. Nangona kunjalo, ukwenziwa kwezithuthi zibe ncinci, ukusebenza kakuhle kwezixhobo ze-elektroniki nezombane, kunye nokukhanya kwezixhobo zoomatshini kuyakhawuleza, imfuno kunye neemfuno zokusebenza kwe-nylon ziyanda kancinci kancinci. Ngoko ke ukuguqulwa kwe-nylon kubonakala kubaluleke kakhulu.

Amanyathelo okulungisa i-nylon

1. Useto lobushushu bebhareli

(1) Ngenxa yokuba i-nylon yi-crystalline polymer, inendawo yokunyibilika ecacileyo. Ubushushu be-nylon kwi-barrel ngexesha lokujova buxhomekeke ekusebenzeni kwe-resin ngokwayo, umatshini kunye nokuma kwemveliso.

(2) Ukuba ubushushu bezinto buphezulu kakhulu, bunokubangela ukutshintsha kombala, ukuqhekeka kunye nemisonto yesilivere ngokulula iplastiki iindawo ezithile, kwaye ukuba ubushushu bezinto buphantsi kakhulu, bungenza izinto zibe nzima kakhulu kwaye bunokonakalisa isikhunta kunye nesikrufu.

(3) Ngokubanzi, ubushushu obuncinci bokunyibilika kwe-PA6 yi-220℃, kwaye obo be-PA66 yi-250℃. Ngenxa yokungazinzi kakuhle kobushushu be-nylon, akufanelekanga ukuhlala kwibhareli kubushushu obuphezulu ixesha elide ukuze kuthintelwe ukutshintsha kombala kunye nokutyheli kwezinto. Kwangaxeshanye, kuba i-nylon inolwelo oluhle, ihamba ngokukhawuleza emva kokuba ubushushu budlule kwinqanaba layo lokunyibilika.

2. Useto lobushushu bomngundo

(1) Ubushushu bomngundo bunempembelelo ethile ekukhanyeni nasekuncipheni komngundo. Ubushushu bomngundo buqala kwi-80 ukuya kwi-120°C.
Khetha ubushushu obuphezulu bokubumba, ubukhristalo obuphezulu, ukumelana nokuguguleka okwandileyo, ubulukhuni, imodulus ethambileyo, ukufunxwa kwamanzi okuncinci, ukuncipha kobukhristalo obuncinci bemveliso, efanelekileyo kwiimveliso ezixineneyo; khetha ubushushu obuphantsi bokubumba, ubukhristalo obuphantsi, ubukhristalo obulungileyo, ubude obuphezulu, izinga lokuncipha liyancitshiswa, lifanelekile kwiimveliso ezincinci nezicacileyo.

(2) Ukuba ubukhulu bodonga bungaphezulu kwe-3mm, kucetyiswa ukusebenzisa isikhunta esinobushushu obuphantsi kwi-20~40℃. Kwizinto eziqinisiweyo zeglasi, ubushushu besikhunta kufuneka bube ngaphezu kwe-80°C.

(3) Ulawulo lobushushu bezinto ezibunjiweyo apho udonga lwemveliso lubhityile kwaye kunzima ukulubumba okanye lufuna ubukrelekrele obuphezulu. Ukuba imveliso ifuna ukuguquguquka okuthile, ulawulo lobushushu bamanzi abandayo lusetyenziswa ngokubanzi.

3. Ubukhulu bodonga lwemveliso

Umlinganiselo wobude bokuhamba kwe-nylon yi-150 ukuya kwi-200, kwaye ubukhulu bodonga lwemveliso bungaphantsi kwe-0.8mm, ngesiqhelo yi-1 ukuya kwi-3.2mm. Ngaphezu koko, ukuncitshiswa kwemveliso kunxulumene nobukhulu bodonga lwemveliso. Okukhona ubukhulu bodonga butyebile, kokukhona ukuncitshiswa kukhulu.

4. Ukukhupha

Ixabiso lokugcwala kwe-nylon resin limalunga ne-0.03mm, ngoko ke indawo yokungenisa umoya kufuneka ilawulwe ngaphantsi kwe-0.025.

5. Abagijimi namasango

Ububanzi bomngxuma wesango akufuneki bube ngaphantsi kwe-0.5t (t bubukhulu benxalenye yeplastiki). Xa kukho iigeyithi ezintywiliselwa emanzini, ubukhulu begeyithi obuncinci kufuneka bube yi-0.75mm.

6. Uluhlu lokuzalisa ifayibha yeglasi

Ngexesha lenkqubo yokubumba i-nylon, ukunciphisa ubushushu be-mold, ukunyusa uxinzelelo lwe-injection, kunye nokunciphisa ubushushu bezinto kuya kunciphisa izinga lokuncipha kwe-nylon ukuya kwinqanaba elithile, okwenza imveliso ibe lula kakhulu ekuguqukeni ngenxa yoxinzelelo lwangaphakathi oluphezulu. Umzekelo, izinga lokuncipha kwe-PA66 yi-1.5% ukuya kwi-2%, kwaye izinga lokuncipha kwe-PA6 yi-1% ukuya kwi-1.5%. Emva kokongeza izongezo zefayibha yeglasi, izinga lokuncipha linokwehliswa liye malunga ne-0.3%.

Amava asebenzayo asixelela ukuba okukhona kongezwa ifayibha yeglasi eninzi, kokukhona kuncipha ukubumba kwe-resin ye-nylon. Nangona kunjalo, ukongeza ifayibha yeglasi eninzi kuya kubangela iifayibha ezidadayo kumphezulu kwaye kungahambelani kakuhle. Ngokubanzi, ukongeza i-30% kunefuthe elihle.

7. Ukusetyenziswa kwezinto ezisetyenzisiweyo

Kungcono ukuba ungadluli izihlandlo ezithathu ukuze uphephe ukutshintsha kombala wemveliso okanye ukwehla okukhulu kweempawu zomzimba nezoomatshini. Ubungakanani bokusetyenziswa kufuneka bulawulwe ngaphantsi kwe-25%. Ukusetyenziswa kakhulu kuya kubangela ukuguquguquka kwiimeko zenkqubo. Umxube wezinto ezisetyenzisiweyo kunye nezinto ezintsha kufuneka zomiswe.

8. Imiyalelo yokhuseleko

Xa uqalisa i-resin ye-nylon, kufuneka uqale uvule ubushushu be-nozzle, uze uyifudumeze i-barrel. Xa i-nozzle ivaliwe, musa ukujonga umngxuma we-nozzle ukuthintela ukunyibilika kwi-barrel ukuba kungaphumi ngequbuliso ngenxa yokuqokelelwa koxinzelelo kwaye kubangele ingozi.

9. Ukusetyenziswa kwearhente yokukhulula

Ukusebenzisa isixa esincinci se-ejenti yokukhulula ngamanye amaxesha kunokuphucula nokususa iziphene ezifana namaqamza. I-ejenti yokukhulula iimveliso ze-nylon inokuba yi-zinc stearate, ioyile emhlophe, njl.njl., okanye ingaxutywa ibe yintlama kwaye isetyenziswe. Isixa kufuneka sibe sincinci kwaye nokuba sisetyenziswa ukuphepha iziphene zomphezulu wemveliso. Isikrufu kufuneka sikhutshwe xa umatshini uvaliwe ukuthintela ukuba isikrufu singaphuki ngexesha lemveliso elandelayo.

10. Emva kokulungiswa

(1) Unyango lobushushu luyafuneka emva kokuba imveliso yenziwe.

Iindlela ezisetyenziswa rhoqo: Kwizinto ezibila kakhulu ezifana neoyile yeminerali, iglycerin, kunye neparafini engamanzi, ubushushu bonyango lobushushu kufuneka bube yi-10 ukuya kwi-20°C ngaphezulu kobushushu bokusetyenziswa. Ixesha lonyango liyahluka ngokuxhomekeke kubukhulu bodonga lwemveliso. Ubukhulu buyimizuzu eli-10 ukuya kweli-15 ukuba ubukhulu bungaphantsi kwe-3 mm, kwaye ubukhulu buyimizuzu emi-3 ukuya kwengama-20. Ixesha le-6 mm liyimizuzu eli-15 ukuya kwengama-30. Iimveliso eziphathwe ngobushushu kufuneka zipholiswe kancinci ukuya kubushushu begumbi ukuthintela ukuvuselelwa koxinzelelo kwiimveliso ezibangelwa kukupholisa ngequbuliso. (2) Unyango lokulawula umswakama kufuneka lwenziwe emva kokuba imveliso yenziwe.

Unyango lokulungisa umswakama lwenziwa ikakhulu kwiimveliso ezinomswakama ophezulu ongqongileyo. Kukho iindlela ezimbini: enye yindlela yokulungisa umswakama obangelwa ngamanzi abilayo; enye yindlela yokulungisa umswakama obangelwa yisisombululo samanzi se-potassium acetate (umlinganiselo we-potassium acetate kumanzi yi-1.25:1, iqondo lokubila yi-121°C).

Indlela yokulawula ukufuma kwamanzi abilayo ilula, logama nje imveliso ibekwe kwindawo enomswakama we-65% ukuze kufikelelwe ekufunxeni ukufuma okulinganayo, kodwa kuthatha ixesha elide, ngelixa indlela yokulawula ukufuma kwesisombululo samanzi se-potassium acetate ifuna i-acetic acid kubushushu bokucubungula be-80 ukuya kwi-100°C Indlela yokulawula ukufuma kwesisombululo samanzi se-potassium, ixesha lokucubungula lixhomekeke kakhulu kubukhulu bodonga lwemveliso, malunga neeyure ezi-2 xa ubukhulu bodonga buyi-1.5 mm, malunga neeyure ezi-8 xa ubukhulu bodonga buyi-3 mm, kunye neeyure ezili-16 ukuya kwezili-18 xa ubukhulu bodonga buyi-6 mm.