Hydrotalc bụ akụrụngwa dị mkpa maka calcium zinc stabilizers. Hydrotalc nwere ihe owuwu na akụrụngwa pụrụ iche, yana akụrụngwa ya kachasị bụ alkalinity na multi porosity, nwere arụmọrụ pụrụ iche na ọmarịcha arụmọrụ. Ọ nwere ike ịmịkọrọ hydrogen chloride nke ọma n'oge mmebi nke PVC, belata mmetụta catalytic nke hydrogen chloride na resin PVC, ma mee ihe dị ka ihe na-anabata acid, nke a makwaara dị ka nkwụsi ike nke okpomọkụ. A na-ejikarị ya eme ihe dị ka ihe nkwụnye ọkụ.
Hydrotalc nwekwara uru nke ezigbo nghọta, mkpuchi, ihu igwe na-eguzogide, na nhazi. Sulfide adịghị emerụ ya, na-adịghị egbu egbu, ma nwee ike ịrụ ọrụ synergistically na okpomọkụ stabilizers dị ka zinc ncha na organic tin. Ọ bụ ụdị na-ekwe nkwa nke ukwuu nke na-adịghị egbu egbu inyeaka okpomọkụ stabilizer.
A na-ekpuchi usoro nke hydrotalcite na nnukwu interlayer spacing nke 0.76-0.79nm, na ọ nwere nnukwu ebe dị elu nke na-enye ohere ka ìgwè hydroxyl elu ya meghachi omume na hydrogen chloride zuru oke ma nwee mmetụta dị mma na stabilizers.
Ọdịmma nke hydrotalcite bụ:
1. N'ihe banyere ịdị ọcha nke mbụ, hydrotalcite enweghị mmetụta na mmelite nke agba mbụ nke PVC ma ọ bụ naanị ya ma ọ bụ na mmekọrịta ya na usoro calcium zinc. Mgbe ịka nká na oven dị ọkụ nke 180 ℃, agba nlele ahụ na-acha uhie uhie.
2. Na nkwụsi ike nke Congo na-acha uhie uhie, otu ihe omume nke hydrotalcite nwere ike imeziwanye oge nkwụsi ike nke PVC, na mmụba nke ego mgbakwunye, oge nkwụsị ọkụ nke PVC na-egosi ọganihu na-arịwanye elu, ma mmụba adịghị mkpa.
3. Mgbe a na-eji usoro hydrotalcite na calcium zinc mee ihe dị ka onye na-eme ka ọ dị ọkụ, oge nkwụsị ọkụ nke PVC na-eme ka ọ dịkwuo mma, na usoro nke ịba ụba nke oge nkwụsị ọkụ na-abawanye ụba ego na-enwekwa afọ ojuju. Ya mere, dihydroxy metal hydroxides kwesịrị nkewa dị ka ogologo oge inyeaka thermal stabilizers, nke nwere ike n'ụzọ dị irè ịgbatị ogologo oge thermal nkwụsi ike oge nke PVC. Ya mere, mgbe ị na-ejikọta calcium zinc stabilizers, hydrotalcite bụ otu n'ime akụrụngwa dị mkpa.
Oge nzipu: Mee-24-2024
