Surfactant Polymer sodium naphthalene sulphonate formaldehyde Research developed into a hot spot of applied research, and in the construction materials industry more widely, due to its material properties play a key role. Currently less efficient and widespread use of domestic water agent is naphthalene sulfonate formaldehyde condensates, referred to as naphthalene superplasticizer due naphthalene and formaldehyde easy to get raw materials, lower prices, favored by the market. sodium naphthalene sulphonate formaldehyde years there has been bleeding, segregation and when slump loss and other shortcomings. We find that, by (1) to extend the condensation time (2) adding acid modified S two ways to reduce the slump loss at the same time, can significantly reduce bleeding; and analysis found that adding 11% of modified S carboxyl content of the finished product, yield increased after acid, sulfonated increased by 10%. Naphthalene superplasticizer have raw cheap, simple synthesis process and low cost advantages. However, the disadvantage of naphthalene superplasticizer is also well known, such as bleeding, segregation, slump when big loss, poor adaptability to different cement. Years of study at home and abroad to improve its shortcomings [1-3] a lot, but most of the time focused on improving the slump loss. Naphthalene, sodium naphthalene sulphonate formaldehyde, concentrated sulfuric acid, sodium hydroxide, halogenated derivatives as raw material, ion exchange reaction synthesis of a novel
naphthalene superplasticizer.
Test results show that the performance of (1) Volume 5 ‰ ~ 12 ‰, the water reduction rate from 13% to 21%; (2) optimal dosage is about 6 ‰, its cement mortar strength test 28d compressive strength 66.3MPa, flexural strength of 11.5MPa; (3) the sodium naphthalene sulphonate formaldehyde compared with commercially available naphthalene superplasticizer FDN, which grout flow better, longer warranty plastic; (4) early cement hydration resistance measuring results show that the resistivity increases with new superplasticizer dosage rather increased, and hydration during the induction period required to induce early and longer. Water reducing admixture is one of the most important buildings, the technology level of its use has a significant impact. The current usage of superplasticizer far below international levels [1]. At present, the international hotspot for sodium naphthalene sulphonate formaldehyde is polycarboxylate superplasticizer and compound additives, but because synthetic superplasticizer very limited choice of raw materials, research FDN Naphthalene Less synthesis agent, synthetic reaction control factors and the impact on the finished concrete. Conclusions apply to actual production, significantly improved product performance. 1962 Japan's Kao Corporation successfully developed a kind of divination first prime sulfonate formaldehyde condensate sodium-based water reducer (in translation Mayer too) [1].
Such high water reducing agent with less, cited volume is low, does not influence the setting time of concrete and concrete features can increase early, late strength, while the main raw material industry
due to low prices of production factors such products, adequate sources of this article an overview of the main properties and development sodium naphthalene sulphonate formaldehyde home and abroad, introduces the types and composition of superplasticizer proposed research regarding superplasticizer and future research directions, refers to a high-performance concrete durable, high strength, high fluidity
concrete, Sodium naphthalene sulfonate formaldehyde years. it is the biggest difference with ordinary concrete materials are on order and ultrafine mineral superplasticizer concrete admixture as the fifth, sixth essential component of their performance is the focus of the current countries of concrete engineering and materials sector is concerned.
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http://www.xydchem.com/
http://www.whxydchem.com/
naphthalene superplasticizer.
Test results show that the performance of (1) Volume 5 ‰ ~ 12 ‰, the water reduction rate from 13% to 21%; (2) optimal dosage is about 6 ‰, its cement mortar strength test 28d compressive strength 66.3MPa, flexural strength of 11.5MPa; (3) the sodium naphthalene sulphonate formaldehyde compared with commercially available naphthalene superplasticizer FDN, which grout flow better, longer warranty plastic; (4) early cement hydration resistance measuring results show that the resistivity increases with new superplasticizer dosage rather increased, and hydration during the induction period required to induce early and longer. Water reducing admixture is one of the most important buildings, the technology level of its use has a significant impact. The current usage of superplasticizer far below international levels [1]. At present, the international hotspot for sodium naphthalene sulphonate formaldehyde is polycarboxylate superplasticizer and compound additives, but because synthetic superplasticizer very limited choice of raw materials, research FDN Naphthalene Less synthesis agent, synthetic reaction control factors and the impact on the finished concrete. Conclusions apply to actual production, significantly improved product performance. 1962 Japan's Kao Corporation successfully developed a kind of divination first prime sulfonate formaldehyde condensate sodium-based water reducer (in translation Mayer too) [1].
Such high water reducing agent with less, cited volume is low, does not influence the setting time of concrete and concrete features can increase early, late strength, while the main raw material industry
due to low prices of production factors such products, adequate sources of this article an overview of the main properties and development sodium naphthalene sulphonate formaldehyde home and abroad, introduces the types and composition of superplasticizer proposed research regarding superplasticizer and future research directions, refers to a high-performance concrete durable, high strength, high fluidity
concrete, Sodium naphthalene sulfonate formaldehyde years. it is the biggest difference with ordinary concrete materials are on order and ultrafine mineral superplasticizer concrete admixture as the fifth, sixth essential component of their performance is the focus of the current countries of concrete engineering and materials sector is concerned.
http://www.xyd-chem.com/
http://www.xydchem.com/
http://www.whxydchem.com/