ewebata:
A na-eji ethers cellulose eme ihe n'ọtụtụ ebe na ụlọ ọrụ ihe owuwu n'ihi njigide mmiri ha dị mma, ihe na-eme ka ọ dịkwuo mma na njikọta. Ha na-emeziwanye usoro na nhazi nke ihe ndị dabeere na ciment ma na-eme ka ihe ndị na-arụ ọrụ nke ngwaahịa ikpeazụ. A na-ejikarị ihe ndị na-emepụta ihe na-emepụta ihe na-emepụta ihe na-eme ka ọkpụkpụ, oghere na ezughị okè ndị ọzọ na mgbidi na elu ụlọ. Ojiji nke cellulose ethers na putty powders nwere ike imeziwanye arụmọrụ, ịtọ oge na njirimara zuru oke nke ngwaahịa ahụ. Isiokwu a ga-atụle mmetụta dị iche iche viscosities nke cellulose ethers na putty ntụ ntụ.
Ụdị cellulose ethers:
E nwere ụdị dị iche iche nke cellulose ethers gụnyere methylcellulose (MC), hydroxypropylmethylcellulose (HPMC), ethylcellulose (EC) na carboxymethylcellulose (CMC). HPMC bụ cellulose ether na-ewu ewu na ụlọ ọrụ na-ewu ụlọ n'ihi njigide mmiri ya dị mma, ihe na-eme ka ọ dịkwuo mma na nrapado. HPMC na-abịa na viscosities dị iche iche, site na obere ruo elu.
Mmetụta nke cellulose ether na putty ntụ ntụ:
A na-eji ntụ ntụ na-emepụta ihe na-emeju oghere, oghere na ezughị okè ndị ọzọ na mgbidi na elu ụlọ. Ojiji nke cellulose ethers na putty powders nwere ike imeziwanye arụmọrụ na ịtọ oge ngwaahịa ahụ. Cellulose ether nwekwara ike melite workability na adhesion nke putty ntụ ntụ. Ihe na-esonụ bụ mmetụta nke viscosities dị iche iche nke cellulose ethers na putty ntụ ntụ:
1. HPMC viscosity dị ala:
Obere viscosity HPMC nwere ike melite fluidity na workability nke putty ntụ ntụ. Ọ na-emekwa ka nhazi oge nke ngwaahịa ahụ dịkwuo mma. HPMC nwere viscosity dị ala nwere okpomọkụ gelation dị ala, nke nwere ike igbochi putty ntụ ntụ ka ọ sie ike ngwa ngwa. Ọ nwekwara ike melite adhesion na njikọta ngwaahịa. Low viscosity HPMC kwesịrị ekwesị maka putty ntụ ntụ chọrọ ezigbo workability na ire ụtọ.
2. Ọkara viscosity HPMC:
Ọkara viscosity HPMC nwere ike melite thixotropic Njirimara nke putty ntụ ntụ. Ọ nwekwara ike melite njigide mmiri na njikọta nke ngwaahịa ahụ. Ọkara viscosity HPMC nwere ike melite n'ibu akụrụngwa nke ngwaahịa, dị ka ike na anwụ ngwa ngwa. Ọ dị mma maka ntụ ntụ putty chọrọ ezigbo njide mmiri na ịdị n'otu.
3. HPMC viscosity dị elu:
High viscosity HPMC nwere ike melite ndim na mgbochi sag arụmọrụ nke putty ntụ ntụ. Ọ nwekwara ike melite njigide mmiri na njikọta nke ngwaahịa ahụ. High viscosity HPMC nwere ike melite n'ibu Njirimara nke ngwaahịa, dị ka ike na anwụ ngwa ngwa. Ọ dabara maka putty ntụ ntụ na-achọ elu thickening na mgbochi sag arụmọrụ.
na ngwụcha:
A na-eji ethers cellulose eme ihe n'ọtụtụ ebe na ụlọ ọrụ ihe owuwu n'ihi njigide mmiri ha dị mma, ihe na-eme ka ọ dịkwuo mma na njikọta. HPMC aghọwo ether cellulose na-ewu ewu na ụlọ ọrụ ihe owuwu n'ihi ihe ndị magburu onwe ya. HPMC na-abịa na viscosities dị iche iche, site na obere ruo elu. Iji cellulose ethers na viscosities dị iche iche nwere ike imeziwanye arụmọrụ, nhazi oge, arụmọrụ thixotropic, njigide mmiri, arụmọrụ njikọ na ihe eji arụ ọrụ nke putty powder. Ojiji nke cellulose ethers nwere ike imeziwanye mma na arụmọrụ nke ntụ ntụ putty, na-eme ka ha dị mma maka ngwa dị iche iche na ụlọ ọrụ mmepụta ihe.
Oge nzipu: Jul-20-2023