Izinto eziphambili zoLawulo kwiMveliso yeBisphenol A
Ngokuphathelele ubunyulu bezinto eziluhlaza, i-phenol kunye ne-acetone, njengezinto eziphambili zokwenziwa kwe-bisphenol A, zifuna ulawulo oluqinileyo malunga nobunyulu bazo. Ubunyulu be-phenol akufuneki bube ngaphantsi kwe-99.5%, kwaye ubunyulu be-acetone kufuneka bufikelele ngaphezulu kwe-99%. Izinto eziluhlaza ezinobunyulu obuphezulu zinokunciphisa ukuphazamiseka kokungcola kwimpendulo kwaye ziqinisekise inkqubela phambili ethe tye yempendulo.
Ulawulo lobushushu bokusabela lubalulekile. Ubushushu bokusabela kokufuma ngokubanzi buphakathi kwama-40 ukuya kuma-60°C. Ngaphakathi kolu luhlu lobushushu, izinga lokuphendula kunye nokukhetha imveliso kunokufikelela kwibhalansi elungileyo. Ubushushu obuphezulu kakhulu okanye obuphantsi kakhulu buya kuchaphazela isivuno kunye nomgangatho we-bisphenol A BPA. Umsebenzi kunye nokukhetha kwe-catalyst kumisela indlela yokusabela. Ii-catalysts ze-acid ezisetyenziswa rhoqo ezifana ne-sulfuric acid zifuna ukusasazwa ngokuchanekileyo koxinzelelo lwazo kunye nomthamo. Ngokubanzi, uxinzelelo lwe-sulfuric acid luyatshintshatshintsha ngaphakathi koluhlu oluthile, kwaye umthamo yinxalenye ethile yenani lilonke lezinto ezikrwada, ukuqinisekisa ukuba i-catalyst isebenza kakuhle. Uxinzelelo lokuphendula lukwachaphazela imveliso ye-bisphenol A BPA. Uluhlu loxinzelelo olufanelekileyo yi-0.5 - 1.5 MPa. Indawo yoxinzelelo oluzinzileyo inceda ukugcina uzinzo lwenkqubo yokusabela kwaye ikhuthaza ukudluliselwa kobunzima kunye nenkqubela yokusabela. Umlinganiselo wezinto unxulumene ngokuthe ngqo nokusebenza kakuhle kokusabela. Umlinganiselo we-molar we-phenol kwi-acetone uhlala ulawulwa kwi-2.5 - 3.5:1. Umlinganiselo ofanelekileyo ungenza ukuba izinto ezikrwada zisabele ngokupheleleyo, zonyuse isivuno se-bisphenol A BPA, kwaye zinciphise iimveliso ezishiyekileyo.

Ukuguqulwa kweBisphenol A BPA kuphucula amandla oomatshini, ukukrwela kunye nokumelana nokuguguleka, ilungele ukujongana nemingeni enzima.

Ukuba ufuna ukuthenga iimveliso zeekhemikhali ezinokuthenjwa, nceda ujonge iShandong Pulisi Chemical Co., Ltd., egxile “kwiikhemikhali ezisemgangathweni” kwaye ibisebenza iminyaka engama-20.