Yadda za a gwada ingancin EVA jakunkuna?

Gwajin inganci naEVA jakunkunacikakken tsari ne na kimantawa wanda ya ƙunshi bangarori da yawa, gami da kaddarorin jiki, kaddarorin sinadarai, matakan kare muhalli da sauran girma. Waɗannan su ne wasu mahimman abubuwan gwaji da hanyoyin:

1. Gwajin aikin jiki
Gwajin aikin jiki yana kimanta ainihin kaddarorin zahiri na jakunkuna na EVA, gami da:

Gwajin taurin: Yawancin jakunkuna na EVA ana gwada ta ta Shore A hardness gwajin, kuma kewayon taurin gama gari yana tsakanin 30-70

Ƙarfin ƙarfi da haɓakawa a lokacin hutu: Ƙarfin ƙarfi da haɓakawa a lokacin karya kayan ana auna su ta hanyar gwaji don yin la'akari da kaddarorin inji da kwanciyar hankali na jakar EVA.

Gwajin naƙasa na dindindin na matsi: Ƙayyade matsi na dindindin nakasar abu ƙarƙashin wani matsa lamba don kimanta dorewar jakar EVA

2. Gwajin aikin thermal
Gwajin aikin thermal yana mai da hankali kan aikin jakunkuna na EVA ƙarƙashin yanayin zafi mai girma:

Matsayin narkewa da kwanciyar hankali na thermal: Matsayin narkewa da kwanciyar hankali na kayan EVA ana kimanta su ta hanyar nazarin calorimetry daban-daban (DSC) da bincike na thermogravimetric (TGA)

Juriyar tsufa mai zafi: Gwada juriyar tsufa na jakunkuna na EVA a cikin yanayin zafi mai zafi don tabbatar da cewa samfurin zai iya kula da kyakkyawan aiki bayan amfani na dogon lokaci.

3. Gwajin aikin sinadarai
Gwajin aikin sinadarai yana kimanta juriyar jakar EVA zuwa abubuwan sinadarai:

Chemical lalata juriya: kimanta juriya na EVA jakar zuwa acid, alkali, gishiri da sauran sinadaran abubuwa.

Juriya mai: yana gwada kwanciyar hankali da juriya na lalata jakar EVA a cikin matsakaicin mai

4. Gwajin daidaita yanayin muhalli
Gwajin daidaita yanayin muhalli yana nazarin daidaitawar jakar EVA zuwa abubuwan muhalli:

Gwajin juriya na yanayi: yana gano juriyar jakar EVA zuwa haskoki na ultraviolet, zafi da canjin zafin jiki

Gwajin juriyar ƙarancin zafin jiki: yana kimanta aikin jakar EVA a cikin ƙananan yanayin zafi

5. Gwajin daidaitaccen muhalli
Gwajin ma'aunin muhalli yana tabbatar da cewa jakar EVA ta cika buƙatun muhalli kuma baya ƙunshi abubuwa masu cutarwa:

Umarnin RoHS: Umarnin hana amfani da wasu abubuwa masu haɗari a cikin kayan lantarki da lantarki. Aikace-aikacen kayan EVA a cikin kayan lantarki yana buƙatar bin wannan umarnin

Dokokin ISA: Dokokin EU akan rajista, kimantawa, izini da ƙuntata sinadarai. Ƙirƙirar da amfani da kayan EVA suna buƙatar biyan buƙatun Dokokin REACH

6. Gwajin ƙarfin watsawa da kwasfa
Gwaje-gwaje na musamman don fim ɗin EVA:

Gwajin watsawa: yana kimanta watsa haske na fim ɗin EVA, wanda ke da mahimmanci musamman ga aikace-aikace irin su hasken rana.

Gwajin ƙarfin kwasfa: yana gwada ƙarfin kwasfa tsakanin fim ɗin EVA da gilashin da kayan jirgi na baya don tabbatar da amincin marufi

Ta hanyar abubuwan gwajin da ke sama, za a iya kimanta ingancin fakitin EVA don tabbatar da cewa sun cika buƙatun yanayin aikace-aikacen daban-daban. Lokacin samarwa da amfani da kayan EVA, kamfanoni suna buƙatar bin ƙa'idodin ƙasashen duniya, na ƙasa da masana'antu masu dacewa don tabbatar da ingancin samfur da amincin.