Early 1960s, appears on the foreign market three superplasticizer (or superplasticizer), which are naphthalene sulfonate formaldehyde condensates, polycyclic aromatic sulfonate formaldehyde condensates and melamine sulfonic acid formaldehyde condensates. The early 1960s, Japan and Germany began using superplasticizer in concrete. China in the early 1970s started to develop superplasticizer, and the corresponding varieties can produce 2005 annual output of about 1.11 million tons, the output is still growing every year. In recent years, with the structural design requirements continue to increase the rapid development and concrete admixture technology, and now the construction of concrete slump, strength, impermeability, bending, antifreeze and other aspects of the increasingly high demand, Common superplasticizer has been difficult to meet the construction requirements. Development superplasticizer inevitable. The current domestic configuration of high-strength concrete superplasticizer are used, can be divided into four categories: Naphthalene (Naphthalin), multi-carboxylic (Polycarboxylic acid), three melamine-based (Melamine), amino acid-based (Aminosulfonic acid ). The above four categories superplasticizer, Zhuhai polycarboxylate water reducer, based on these four components of the main categories. In Japan are collectively referred to as high-performance AE water reducing agent. Through the analysis of the mechanism of water-reducing agent, the choice of a polar group containing -COO -, - SO3- acrylic acrylamide-2-methyl propane sulfonic acid and non-polar groups containing -OH, -CH2CH20- polyethylene glycol monoacrylate as a reactive monomer, Shenzhen polycarboxylate water reducer, in aqueous solution by Michael force H to be grafted onto the molecules containing NH2 and Shantou Polycarboxylate prepared hyperbranched or dendritic macromolecules with a spatial three-dimensional configuration of the plasticizer. Polycarboxylate superplasticizer Features low ash and high performance polycarboxylate superplasticizer dispersion and reducing water of unique, although less cement particle surface adsorption capacity, but because it has many branched chain, may produce steric hindrance, so content is low can achieve better plasticizing effect. Calculated in accordance with the volume, content is generally 0.1% to 0.3%, polycarboxylate water reducer, this dosage of the reducing agent and water reduction of about 0.6% -0.9% of naphthalene superplasticizer reduced water rate considerably. Content is 0.2% to 0.3% amount of cementitious material (active ingredient), the water rates of up to 25% to 35%, some up to 40%. Guangzhou Polycarboxylate _ _ Polycarboxylate high-strength building materials (view) provided by the high-strength Materials Co., Ltd. Linyi City. Linyi high-strength building materials Limited (www.lygqjc.cn) is a professional, "polycarboxylate superplasticizer, polycarboxylate liquor, liquor polycarboxylate" company. Since its inception, we adhere to the "good faith, sound management" approach, the courage of healthy competition in the market, so that the "poly-carboxylic acid liquor, polycarboxylate water reducer, pumping agent polycarboxylate" brand has a good reputation . We adhere to the "service first, customer first" principle, so that high-strength building materials has won the trust of customers and the public in concrete products, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!