SNF

Product Description

Naphthalene sulfonate formaldehyde condensates(SNF/NSF/PNS/UNF/FDN).The main raw materials of naphthalene superplasticizer are industrial naphthalene, sulfuric acid, formaldehyde and sodium hydroxide. Naphthalene series water-reducing agent products are characterized by the water reduction rate is not as high as PCE series, the general water reduction rate is less than or equal to 16%, and it is impossible to produce products with an added amount of 1.0Kg (L) /100Kg cement. SNF was the mainstream product in China 20 years ago, but if you have special needs, we can also provide you with two specifications of SNF.

Product Type

SNF-5 (High concentration naphthalene sulfonate water reducer) Sodium sulfate content≤5% Solid content≥91%

SNF-18 (Medium concentration naphthalene sulfonate water reducer) Sodium sulfate content≤18% Solid content≥91%

Formula

The minimum content of liquid products produced by naphthalene powder water-reducing agent is 1.5Kg(L)/100Kg cement, and the admixture with slump retention time exceeding 1.5 hours cannot be produced. If it is necessary to maintain concrete with a slump of 160mm for more than 2 hours, naphthalene water reducer is difficult to do, if it is barely done, then the setting time of concrete will be extended, and there will be a great safety risk. Moreover, naphthalene sulfonate superplasticizer is difficult to produce pumped high-strength concrete above C60. If you produce C100 concrete, you can only use PCE series products, especially FRPC-02. Concrete with slump retention of more than 3 hours can only be achieved by using PCE.

Materials	Dosage（Kg）		Notes
	Formula 1	Formula 2
SNF-5	/	260-360	The specific dosage was determined by concrete mix ratio test
SNF-18	300-420	/
sodium gluconate	15-30	15-30	It depends on the temperature and setting time
sucrose	5-10	5-10	It depends on the temperature and setting time
Other special materials	？	？	It depends on the circumstances
air entraining agent	0.6-1.0	0.6-1.0	If there is no requirement for gas content, the lowest value can be taken
Water	Add water to 1000Kg		Clean water
The data is for reference only, and the specific formula should be determined by test.

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Product specification