Qaabaynta Tixraaca ee Balaastikada PVC ee Heerkulka-Difaaca ee V-0

Qaabaynta Tixraaca ee Balaastikada PVC ee Heerkulka-Difaaca ee V-0

Si loo gaaro qiimeynta dib-u-celinta ololka V-0 (sida waafaqsan heerarka UL-94) ee balaastikada PVC ee thermoplastic-ka, aluminium hypophosphite iyo boric acid waa laba ka-hortagga ololka oo si caadi ah loo isticmaalo. Heerarkooda ku-darka waxay u baahan yihiin in la hagaajiyo iyadoo lagu saleynayo qaacidada gaarka ah, xaaladaha habaynta, iyo shuruudaha waxqabadka. Hoos waxaa ku qoran talooyin iyo kala duwanaansho tixraac:

1. Heerka Dheeraadka ah ee Aluminium Hypophosphite

Aluminium hypophosphite waa qalab wax ku ool ah oo ku salaysan fosfooraska oo ku habboon agabka PVC. Waxay joojisaa gubashada iyadoo sameysa lakab fosfooraska oo ilaalinaya isla markaana sii deynaya gaaska fosfooraska.

• Heerka ku darista ee lagu taliyay: 15–25 saacadood(qaybo boqolkiiba qayb ka mid ah resin)
• Si aad u hesho PVC-ga caadiga ah, ku dar hareeraha20 fiidnimoee aluminium hypophosphite waxay caadi ahaan gaadhaa qiimeyn dib-u-dhac ololka V-0.
• Si loo helo dib-u-dhac olol oo sareeya, qiyaasta waa la kordhin karaa, laakiin saameynta ku yeelan karta sifooyinka farsamada waa in la tixgeliyaa.
• Ka taxadaritaan:
• Aluminium hypophosphite xad dhaafka ah wuxuu yareyn karaa waxqabadka habaynta (tusaale ahaan, socodka oo liita).
• Waxaa lagu talinayaa in lagu daro waxyaabaha kale ee dabka celiya (tusaale ahaan, boric acid, aluminium hydroxide) si loo helo saameyn isku mid ah.

2. Heerka Ku Darista Boric Acid

Boric acid waa dawo dab-damis ah oo qiimo jaban oo ka shaqeysa burburka endothermic iyo sameynta lakab difaac oo u eg galaas.

• Heerka ku darista ee lagu taliyay: 5–15 saacadood
• Boric acid waxaa badanaa loo isticmaalaa sidii dab-damis labaad, xaddi badanina waxay dhaawici kartaa sifooyinka farsamada iyo farsamaynta.
• Ku darista PVC, iyadoo lagu darayo hareeraha10 fiidnimoee boric acid waxay la jaanqaadi kartaa aluminium hypophosphite si kor loogu qaado dabacsanaanta ololka.
• Ka taxadaritaan:
• Boric acid waa hygroscopic, sidaa darteed kaydinta iyo maaraynta waa inay ka fogaataa nuugista qoyaanka.
• Saamaynteeda ka hortagga dabka waa xaddidan tahay marka kaligeed la isticmaalo; waxaa badanaa lagu daraa waxyaabaha kale ee ka hortagga dabka (tusaale ahaan, aluminium hypophosphite, aluminium hydroxide).

3. Qaabaynta Isku-dhafka ah ee Aluminium Hypophosphite iyo Boric Acid

Si loo gaaro qiimeynta V-0, aluminium hypophosphite iyo boric acid ayaa la isku dari karaa si loo helo saameyn isku mid ah. Hoos waxaa ku yaal qaacido tixraac ah:

• Aluminium hypophosphite: 15–20 hr
• Boric acid: 5–10 hr
• Waxyaabaha kale ee lagu daro:
• Balaastig-sameeye (tusaale ahaan, DOP): Sida loogu baahdo (lagu hagaajiyay iyadoo lagu saleynayo shuruudaha adag ee PVC)
• Xasiliye:2–5 saacadood(tusaale ahaan, cusbada rasaasta, dejiyayaasha kalsiyum-zinc)
• Saliideeye:0.5–1 phr(tusaale ahaan, stearic acid)

Tusaalaha Qaacidada:

• Resin PVC ah:100 phr
• Aluminium hypophosphite:18 fiidnimo
• Borate-ka Zinc:8 fiidnimo
• Balaastiig-sameeye (DOP):40 fiidnimo
• Xasiliye:3 phr
• Saliideeye:0.8 phr

4. Tijaabinta iyo Hagaajinta

Codsiyada wax ku oolka ah, tallaabooyinka soo socda ayaa lagula talinayaa tijaabinta iyo hagaajinta:

1. Qaacidda tijaabada ah:Diyaari tijaabo yar oo ku salaysan kala duwanaanshaha tixraaca.
2. Tijaabada UL-94:Samee tijaabooyin gubasho toosan si aad u qiimeyso heerka dib u dhaca ololka.
3. Tijaabada waxqabadka:Qiimee sifooyinka farsamada (tusaale ahaan, xoogga jiidista, xoogga saameynta) iyo waxqabadka habaynta (tusaale ahaan, socodka, xasilloonida kulaylka).
4. Hagaajinta:Hagaaji heerarka ku darista ee aluminium hypophosphite iyo boric acid ama soo bandhig waxyaabo kale oo joojiya ololka (tusaale ahaan, aluminium hydroxide, antimony trioxide) si loo sii wanaajiyo waxqabadka.

5. Tixgelinnada Muhiimka ah

• Heerkulka habaynta:Heerkulka kala-baxa ee aluminium hypophosphite iyo boric acid waa mid aad u sarreeya; hubi in heerkulka warshadaynta uusan dhaafin xadkan si looga fogaado burburka.
• Kala-fidinta:Hubi in walxaha dab-damiska dabka lagu kala firdhiyo PVC si looga hortago dhibaatooyinka fiirsashada deegaanka.
• Saamaynta deegaanka:Labada aluminium hypophosphite iyo boric acid labaduba waa kuwo dab-damiya deegaanka, laakiin waa in la xaqiijiyaa iswaafajinta waxyaabaha kale ee lagu daro.

6. Gunaanad

Si loo gaaro qiimeynta dib-u-celinta ololka V-0 ee balaastikada PVC thermoplastic, heerarka lagu daray ee lagu taliyay waa15–25 hr oo loogu talagalay aluminium hypophosphiteiyo5-15 hr oo loogu talagalay boric acidIsticmaalka isku-dhafka ah ee qalabkan dab-damiska ah wuxuu kor u qaadi karaa waxqabadka. Dhab ahaantii, hagaajinta ku salaysan qaacidooyin gaar ah iyo shuruudaha waxqabadka ayaa lagama maarmaan ah, waana in la sameeyaa tijaabada UL-94 si loo xaqiijiyo qiimeynta dab-damiska.

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