Mea hoʻohui o Gypsum Mortar Admixture?

Hoʻokahi mea hoʻohui i nā palena 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 hoʻopaʻa wai inorganic maʻamau 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, 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 haʻahaʻa o ka ea he mau 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 ke kūpaʻa wai. ke kino 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 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 ai 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.