Ƙirƙirar Magana don V-0 Flame-Retardant PVC Thermoplastic Plastics

Ƙirƙirar Magana don V-0 Flame-Retardant PVC Thermoplastic Plastics

Don cimma ƙimar jinkirin harshen wuta na V-0 (bisa ga ka'idodin UL-94) a cikin robobi na thermoplastic na PVC, aluminium hypophosphite da boric acid biyu ne waɗanda aka saba amfani da su. Ana buƙatar haɓaka matakan haɓaka su bisa ƙayyadaddun tsari, yanayin sarrafawa, da buƙatun aiki. A ƙasa akwai wasu shawarwari da jeri na tunani:

1. Ƙara Matsayin Aluminum Hypophosphite

Aluminum hypophosphite ingantaccen ingantaccen harshen wuta ne wanda ya dace da kayan PVC. Yana hana konewa ta hanyar samar da Layer phosphate mai kariya da sakin iskar phosphoric acid.

• Matsayin ƙarawa da aka ba da shawarar: 15-25 ph(bangaro a kowace sassa dari na guduro)
• Don daidaitaccen PVC, ƙara kewaye20 phrna aluminum hypophosphite yawanci yana samun ƙimar jinkirin harshen wuta V-0.
• Don mafi girman jinkirin harshen wuta, ana iya ƙara yawan adadin, amma ya kamata a yi la'akari da tasirin kayan aikin injiniya.
• Kariya:
• Aluminum hypophosphite da ya wuce kima na iya rage aikin sarrafawa (misali, ƙarancin kwarara).
• Ana ba da shawarar haɗawa tare da sauran masu hana wuta (misali, boric acid, aluminum hydroxide) don tasirin daidaitawa.

2. Ƙara Matsayin Boric Acid

Boric acid ne mai rahusa wuta retardant wanda ke aiki da farko ta hanyar endothermic bazuwar da kuma samuwar wani gilashin kariya Layer.

• Matsayin ƙarawa da aka ba da shawarar: 5-15 ph
• Boric acid yawanci ana amfani dashi azaman mai kare harshen wuta na biyu, kuma adadin da ya wuce kima na iya lalata kaddarorin inji da sarrafawa.
• A cikin PVC, ƙara kewaye10 phrna boric acid na iya yin aiki tare da aluminum hypophosphite don haɓaka jinkirin harshen wuta.
• Kariya:
• Boric acid ne hygroscopic, don haka ajiya da kuma kula ya kamata kauce wa sha danshi.
• Tasirinsa mai hana harshen wuta yana iyakance lokacin amfani da shi kadai; yawanci ana haɗa shi tare da sauran masu hana wuta (misali, aluminum hypophosphite, aluminum hydroxide).

3. Tsarin Haɗin kai na Aluminum Hypophosphite da Boric Acid

Don cimma ƙimar V-0, aluminium hypophosphite da boric acid ana iya haɗa su don tasirin haɗin gwiwa. A ƙasa akwai tsarin tunani:

• Aluminum hypophosphite: 15-20 ph
• Boric acid: 5-10 ph
• Sauran additives:
• Plasticizer (misali, DOP): Kamar yadda ake buƙata (daidaita bisa buƙatun taurin PVC)
• Stabilizer:2-5 ph(misali, gubar salts, calcium-zinc stabilizers)
• Mai mai:0.5-1 phr(misali, stearic acid)

Misali Tsarin:

• PVC guduro:100 phr
• Aluminum hypophosphite:18 phr
• Zinc borate:8 phr
• Plasticizer (DOP):40 phr
• Stabilizer:3 phr
• Mai mai:0.8 hr

4. Gwaji da Ingantawa

A aikace-aikace masu amfani, ana ba da shawarar matakai masu zuwa don gwaji da haɓakawa:

1. Tsarin matukin jirgi:Shirya ƙaramin gwaji bisa ga jeri na tunani.
2. Gwajin UL-94:Gudanar da gwaje-gwajen ƙonawa a tsaye don kimanta ƙimar jinkirin harshen.
3. Gwajin aiki:Yi la'akari da kaddarorin inji (misali, ƙarfin ɗaure, ƙarfin tasiri) da aikin sarrafawa (misali, gudanawar ruwa, kwanciyar hankali na thermal).
4. Ingantawa:Daidaita matakan ƙari na aluminum hypophosphite da boric acid ko gabatar da wasu abubuwan da ke hana wuta (misali, aluminum hydroxide, antimony trioxide) don ƙara haɓaka aiki.

5. Mahimman Abubuwan La'akari

• Yanayin sarrafawa:Yanayin lalata na aluminum hypophosphite da boric acid suna da girma; tabbatar da yanayin yanayin aiki bai wuce waɗannan iyakoki ba don guje wa lalacewa.
• Watsewa:Tabbatar da tarwatsa iri ɗaya na masu riƙe da harshen wuta a cikin PVC don hana al'amuran tattarawa.
• Tasirin muhalli:Dukansu hypophosphite na aluminum da boric acid sune masu kare harshen wuta, amma dacewa da sauran abubuwan ƙari yakamata a tabbatar dasu.

6. Kammalawa

Don cimma ƙimar jinkirin harshen wuta na V-0 a cikin robobi na thermoplastic na PVC, matakan ƙari da aka ba da shawarar sune15-25 phr don aluminum hypophosphitekuma5-15 phr don boric acid. Yin amfani da haɗin gwiwa na waɗannan masu kare wuta na iya haɓaka aiki. A aikace, haɓakawa dangane da takamaiman tsari da buƙatun aiki yana da mahimmanci, kuma yakamata a gudanar da gwajin UL-94 don tabbatar da ƙimar jinkirin harshen.

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