Mea hoʻohui o Gypsum Mortar Admixture?

He mau palena ka hoʻohui ʻana i ka hoʻomaikaʻi ʻana i ka hana o ka gypsum slurry.Inā ʻo ka hana o ka gypsum mortar e hoʻokō i nā hopena ʻoluʻolu a hoʻokō i nā koi noi like ʻole, pono nā mea hoʻohui kemika, admixtures, fillers, a me nā mea like ʻole e hoʻohui ʻia a hoʻohui ʻia i kahi ʻano ʻepekema a kūpono.

1. Hoʻoponopono coagulation

Hoʻokaʻawale ʻia nā mea hoʻoponopono coagulation i nā retarders a me nā accelerators.I loko o ka gypsum dry-mixed mortar, hoʻohana ʻia nā retarders no nā huahana i hoʻomākaukau ʻia me ka plaster of paris, a koi ʻia nā accelerators no nā huahana i hoʻomākaukau ʻia me ka gypsum anhydrous a i ʻole ka hoʻohana pono ʻana i ka gypsum dihydrate.

2. Hoʻopaneʻe

ʻO ka hoʻohui ʻana i ka retarder i ka gypsum maloʻo-hui ʻia nā mea hale e pale ai i ke kaʻina hydration o ka hemihydrate gypsum a hoʻolōʻihi i ka manawa hoʻonohonoho.Nui nā kūlana no ka hydration o ka plaster, me ke ʻano o ka hoʻohui ʻana o ka plaster, ka mahana o ka plaster material i ka wā e hoʻomākaukau ai i nā huahana, ka maikaʻi o ka particle, ka manawa hoʻonohonoho a me ka waiwai pH o nā huahana i hoʻomākaukau ʻia, a me nā mea ʻē aʻe. , no laila he ʻokoʻa nui ka nui o ka retarder i nā kūlana like ʻole.I kēia manawa, ʻoi aku ka maikaʻi o ka retarder no ka gypsum ma Kina, ʻo ia ka protein i hoʻololi ʻia (kiʻekiʻe protein) retarder, nona nā mea maikaʻi o ke kumukūʻai haʻahaʻa, ka manawa hoʻomaha lōʻihi, ka liʻiliʻi o ka ikaika, ke kūkulu ʻana i nā huahana maikaʻi, a me ka manawa wehe lōʻihi.ʻO ka nui i hoʻohana ʻia i ka hoʻomākaukau ʻana i ka plaster stucco lalo lalo he 0.06% a 0.15%.

3. Mea hoʻopaʻa

ʻO ka hoʻolōʻihi ʻana i ka slurry stirring time a me ka hoʻolōʻihi i ka slurry stirring speed kekahi o nā ʻano o ka hoʻoikaika kino coagulation.ʻO nā coagulants kemika maʻamau i hoʻohana ʻia i loko o nā mea kūkulu hale anhydrite pauda, ​​ʻo ia ka potassium chloride, potassium silicate, sulfate a me nā mea waikawa ʻē aʻe.ʻO ka maʻamau he 0.2% a 0.4%.

4. Mea mālama wai

ʻAʻole hiki ke hoʻokaʻawale ʻia nā mea kūkulu hale maloʻo Gypsum mai nā mea mālama wai.ʻO ka hoʻomaikaʻi ʻana i ka pae paʻa wai o ka slurry huahana gypsum e hōʻoia i hiki ke noho ka wai i ka slurry gypsum no ka manawa lōʻihi, i loaʻa ai kahi hopena paʻakikī hydration.No ka hoʻomaikaʻi ʻana i ke kūkulu ʻana i nā mea kūkulu hale gypsum pauda, ​​hoʻemi a pale i ka hoʻokaʻawale ʻana a me ke kahe ʻana o ka slurry gypsum, hoʻomaikaʻi i ka sagging o ka slurry, hoʻolōʻihi i ka manawa wehe, a hoʻoponopono i nā pilikia o ka ʻenehana e like me ka haki ʻana a me ka hollowing.ʻO ka maikaʻi o ka mea mālama wai e hilinaʻi nui ʻia i kona dispersibility, solubility koke, moldability, thermal stability a me ka waiwai mānoanoa, ma waena o ka mea nui loa ka paʻa wai.

ʻEhā ʻano o nā mea mālama wai:

①Cellulosicmea mālama wai

I kēia manawa, ʻo ka hydroxypropyl methylcellulose ka mea i hoʻohana nui ʻia i ka mākeke, a ukali ʻia e methyl cellulose a me carboxymethyl cellulose.ʻOi aku ka maikaʻi o ka hana holoʻokoʻa o ka hydroxypropyl methylcellulose ma mua o ka methylcellulose, a ʻoi aku ka kiʻekiʻe o ka paʻa wai o nā mea ʻelua ma mua o ka carboxymethylcellulose, akā ʻoi aku ka ʻino o ka hopena mānoanoa a me ka hopena paʻa ma mua o ka carboxymethylcellulose.I loko o nā mea hale gypsum maloʻo i hui pū ʻia, ʻo ka nui o ka hydroxypropyl a me ka methyl cellulose ma ke ʻano he 0.1% a 0.3%, a ʻo ka nui o ka carboxymethyl cellulose he 0.5% a 1.0%.Hōʻike ka nui o nā laʻana noiʻi ʻoi aku ka maikaʻi o ka hoʻohana ʻana o nā mea ʻelua.

②Mea mālama wai mākū

Hoʻohana nui ʻia ka lāʻau mālama wai starch no ka gypsum putty a me ka plaster plaster surface, a hiki ke hoʻololi i kahi ʻāpana a i ʻole nā ​​​​mea mālama mālama wai cellulose.ʻO ka hoʻohui ʻana i ka mea hoʻopaʻa wai i hoʻokumu ʻia i ka starch i nā mea kūkulu hale lepo maloʻo gypsum hiki ke hoʻomaikaʻi i ka hana, ka hana, a me ke kūlike o ka slurry.ʻO nā mea hoʻopaʻa wai maʻamau i hoʻohana ʻia i ka starch, ʻo ia ka starch tapioka, ka starch pregelatinized, ka starch carboxymethyl, a me ka starch carboxypropyl.ʻO ka nui o ka mea hoʻopaʻa wai i hoʻokumu ʻia i ka starch he 0.3% a 1%.Inā ʻoi aku ka nui o ka nui, e hoʻoulu ia i ka maʻi o nā huahana gypsum i loko o kahi wahi haʻahaʻa, e hoʻopilikia pololei i ka maikaʻi o ka papahana.

③Hoʻopili i ka mea mālama wai

Hiki i kekahi mau mea hoʻopili koke ke pāʻani i kahi kūlana mālama wai maikaʻi.No ka laʻana, 17-88, 24-88 polyvinyl alcohol pauka, Tianqing gum a me ka guar gum i hoʻohana ʻia i loko o ka gypsum dry-mixed mea hale e like me gypsum, gypsum putty, a me gypsum insulation glue.Hiki ke ho'ēmi i ka nui o ka wai cellulose mea mālama.Ma kahi o ka gypsum hoʻopaʻa wikiwiki, hiki iā ia ke hoʻololi piha i ka cellulose ether wai hoʻopaʻa wai i kekahi mau hihia.

④Nā mea mālama wai ʻole

ʻO ka hoʻohana ʻana i ka hoʻohui ʻana i nā mea paʻa wai ʻē aʻe i loko o nā mea hale gypsum maloʻo i hui pū ʻia e hiki ke hōʻemi i ka nui o nā mea mālama wai ʻē aʻe, e hoʻemi i nā kumukūʻai huahana, a pāʻani pū kekahi i ka hoʻomaikaʻi ʻana i ka hana a me ke kūkulu ʻana o ka gypsum slurry.ʻO nā mea mālama wai ʻole i hoʻohana mau ʻia me ka bentonite, kaolin, ka lepo diatomaceous, ka pauka zeolite, ka pauka perlite, ka pālolo attapulgite, etc.

5. Hoʻopili

ʻO ka hoʻohana ʻana i nā mea hoʻopili i loko o nā mea hale gypsum maloʻo i hui pū ʻia ka lua wale nō i nā mea mālama wai a me nā retarders.ʻO ka gypsum self-leveling mortar, ka gypsum i hoʻopaʻa ʻia, ka gypsum caulking, a me ka gypsum hoʻokaʻawale wela, ʻaʻole hiki ke hoʻokaʻawale ʻia mai nā mea hoʻopili.

 ʻO ka pauka latex hiki ke hoʻopuka hou ʻia

Hoʻohana nui ʻia ka pauka latex redispersible i loko o ka gypsum self-leveling mortar, gypsum insulation compound, gypsum caulking putty, a me nā mea ʻē aʻe. delamination, pale ʻana i ke koko, a me ka hoʻomaikaʻi ʻana i ka pale ʻana i ka māwae.ʻO ka maʻamau he 1.2% a 2.5%.

ʻO ka waiʻona polyvinyl koke

I kēia manawa, ʻo ka waiʻona polyvinyl koke i hoʻohana nui ʻia i ka mākeke ʻo 24-88 a me 17-88.Hoʻohana pinepine ʻia i nā huahana e like me ka hoʻopaʻa ʻana i ka gypsum, gypsum putty, gypsum composite thermal insulation compound, a me ka plastering plaster.0.4% i ka 1.2%.

Guar gum, Tianqing gum, carboxymethyl cellulose, starch ether, a me na mea e ae a pau me na hana hoopili like ole i loko o ka gypsum dry-mixed building materials.

6. Mānoanoa

ʻO ka mānoanoa ka mea nui e hoʻomaikaʻi ai i ka hana a me ka sagging o ka gypsum slurry, e like me nā adhesives a me nā mea mālama wai, akā ʻaʻole loa.ʻO kekahi mau huahana mānoanoa he mea maikaʻi i ka mānoanoa, akā ʻaʻole kūpono i ke ʻano o ka ikaika cohesive a me ka paʻa ʻana o ka wai.I ka hoʻokumu ʻana i nā mea kūkulu hale lepo maloʻo gypsum, pono e noʻonoʻo pono ʻia ka hana nui o nā admixtures i mea e hoʻopili ai i nā admixtures ʻoi aku ka maikaʻi a me ke kūpono.ʻO nā huahana mānoanoa maʻamau ka polyacrylamide, Tianqing gum, guar gum, carboxymethyl cellulose, etc.

7. Ea-entraining agent

Hoʻohana nui ʻia ka mea hoʻoheheʻe ea, ʻike ʻia hoʻi ʻo foaming agent, i ka gypsum dry-mixed building materials e like me ka gypsum insulation compound a me ka plaster plaster.ʻO ka mea hoʻoheheʻe ea (foaming agent) e kōkua i ka hoʻomaikaʻi ʻana i ke kūkulu ʻana, ka pale ʻana i ka ʻūhā, ka pale ʻana i ka hau, hoʻemi i ke koko a me ka hoʻokaʻawale ʻana, a ʻo ke ʻano maʻamau he 0.01% a 0.02%.

8. Mea hoʻoheheʻe

Hoʻohana pinepine ʻia ʻo Defoamer i ka gypsum self-leveling mortar a me ka gypsum caulking putty, hiki ke hoʻomaikaʻi i ka nui, ikaika, kūpaʻa wai a me ka cohesiveness o ka slurry, a ʻo ke ʻano maʻamau he 0.02% a 0.04%.

9. Mea hoemi wai

Hiki i ka mea hoʻemi wai ke hoʻomaikaʻi i ka wai o ka gypsum slurry a me ka ikaika o ke kino paʻakikī gypsum, a hoʻohana mau ʻia i ka gypsum self-leveling mortar a me ka plaster plaster.I kēia manawa, helu ʻia nā mea hoʻemi wai i hana ʻia ma ka home e like me ko lākou wai a me nā hopena ikaika: polycarboxylate retarded water reducers, melamine high-efficiency water reducers, tea-based high-efficiency retarded water reducers, a lignosulfonate water reducers.I ka hoʻohana ʻana i nā mea hoʻohaʻahaʻa wai i nā mea hale gypsum dry-mix, ma kahi o ka noʻonoʻo ʻana i ka hoʻohana ʻana i ka wai a me ka ikaika, pono e uku ʻia i ka manawa hoʻonohonoho a me ka nalowale o ka wai o nā mea hale gypsum i ka manawa.

10. Mea hoʻopaʻa wai

ʻO ka hemahema nui loa o nā huahana gypsum ʻo ka pale wai maikaʻi ʻole.ʻO nā wahi me ka haʻahaʻa ea kiʻekiʻe nā koi kiʻekiʻe no ka pale ʻana i ka wai o ka gypsum dry-mixed mortar.ʻO ka maʻamau, hoʻomaikaʻi ʻia ka pale wai o ka gypsum paʻakikī ma ka hoʻohui ʻana i nā mea hoʻohui hydraulic.I ka hihia o ka wai a i ʻole ka wai momona, hiki i ka hoʻohui ʻana o waho o nā mea hoʻohui hydraulic hiki ke hana i ka coefficient palupalu o ke kino paʻakikī gypsum i ʻoi aku ma mua o 0.7, i mea e hoʻokō ai i nā koi ikaika o ka huahana.Hiki ke hoʻohana ʻia nā mea hoʻohui kemika e hōʻemi i ka solubility o ka gypsum (ʻo ia hoʻi, e hoʻonui i ka coefficient palupalu), e hoʻemi i ka adsorption o ka gypsum i ka wai (ʻo ia hoʻi, e hoʻemi i ka nui o ka hoʻoheheʻe wai) , kaawale wai).ʻO nā mea hana wai wai ʻo Gypsum he ammonium borate, sodium methyl siliconate, silicone resin, emulsified paraffin wax, a me silicone emulsion waterproofing agent me ka hopena maikaʻi aʻe.

11. Mea hoʻoikaika kino

ʻO ka hoʻoulu ʻana o nā anhydrite kūlohelohe a me nā kemika e hāʻawi i ka adhesiveness a me ka ikaika no ka hana ʻana i nā mea hale gypsum dry-mix.Hiki i ka acid activator ke hoʻoikaika i ka hydration rate mua o ka gypsum anhydrous, hoʻopōkole i ka manawa hoʻonohonoho, a hoʻomaikaʻi i ka ikaika mua o ke kino paʻakikī gypsum.He liʻiliʻi ka hopena o ka alkaline activator i ka wikiwiki hydration mua o ka gypsum anhydrous, akā hiki iā ia ke hoʻomaikaʻi nui i ka ikaika hope o ke kino gypsum paʻakikī, a hiki ke hana i ʻāpana o ka mea hydraulic gelling i loko o ke kino gypsum paʻakikī, e hoʻomaikaʻi maikaʻi i ka pale wai o ka wai. ke kino gypsum paʻakikī.ʻOi aku ka maikaʻi o ka hopena o ka hoʻohana ʻana i ka mea hoʻoulu ʻana i ka acid-base ma mua o ka hoʻohana ʻana i ka mea hoʻohana ʻakika hoʻokahi a i ʻole ka mea hoʻoulu kumu.ʻO nā mea hoʻoulu i ka waika, ʻo ia ka potassium alum, sodium sulfate, potassium sulfate, etc. ʻO ka alkaline activators he quicklime, cement, clinker sima, calcined dolomite, etc.

12. Thixotropic lubricant

Hoʻohana ʻia nā lubricants Thixotropic i ka gypsum self-leveling a i ʻole plastering gypsum, hiki ke hōʻemi i ke kahe kahe o ka gypsum mortar, hoʻolōʻihi i ka manawa hāmama, pale i ka waiho ʻana a me ka hoʻoponopono ʻana o ka slurry, i hiki i ka slurry ke loaʻa ka lubricity maikaʻi a me ka hana.I ka manawa like, ua like ke ʻano o ke kino, a ua hoʻonui ʻia ka ikaika o ka ʻili.