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A technology of concrete synergist and methacrylic acid, which is applied in the field of building materials, can solve the problems of poor concrete encapsulation, slump loss over time, etc., and achieve the effects of improving efficacy, improving workability, and simple preparation methods
Inactive Publication Date: 2015-04-08
KZJ NEW MATERIALS GROUP CO LTD
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Problems solved by technology
At present, there are few types of concrete synergists on the market. During the application process, there will be problems such
Method used
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Embodiment 1
[0027] In parts by weight, take 20 parts of triisopropanolamine, 10 parts of diethylene glycol, 5 parts of glycerol, 4 parts of starch, co-MAA- 7 parts of HEA, 8 parts of sodium carbonate, 0.2 part of hydroxy silicone emulsion 6-PDMS with a degree of polymerization of 6, 2 parts of sodium tripolyphosphate, and 50 parts of water were sequentially added into the reaction bottle, and stirred at room temperature for 3 hours to obtain the finished product.
Embodiment 2
[0029] In parts by weight, take 15 parts of triisopropanolamine, 12 parts of triethanolamine, 8 parts of 1,2-octanediol, 4 parts of 1,2-propanediol, the molecular weight is 50000 and the block ratio is MAA:HEA is 3 : 5 parts of co-MAA-HEA of 1, 3 parts of co-MAA-EA, 6 parts of sodium carbonate, 4 parts of sodium silicate, 1 part of hydroxyl silicone emulsion 8-PDMS with a degree of polymerization of 8, 1 part of sodium tripolyphosphate 1 part, 1 part of potassium tripolyphosphate, and 40 parts of water were sequentially added into the reaction flask, and stirred at room temperature for 3 hours to obtain the finished product.
Embodiment 3
[0031] In parts by weight, take 15 parts of triisopropanolamine, 10 parts of diethylene glycol, 4 parts of glycerol, 4 parts of 1,2-octanediol, the molecular weight is 40000 and the block ratio is MAA:HPA is 4: 12 parts of co-MAA-HPA, 5 parts of sodium silicate, 1.5 parts of hydroxy silicone emulsion 8-PDMS with a degree of polymerization of 8, 3 parts of potassium tripolyphosphate, and 48 parts of water were sequentially added to the reaction bottle, and stirred at room temperature for 3 hours Afterwards, the finished product is made.
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Abstract
The invention discloses concrete synergist and a preparation method thereof. The concrete synergist comprises, by weight, 10-30 parts of alcamines substances, 8-18 parts of organic alcohol, 5-15 parts of methacrylic acid copolymers, 4-12 parts of alkaline inorganic salt, 0.1-2 parts of hydroxyl silicones, 0.5-4 parts of tripolyphosphate and 35-60 parts of water, and the methacrylic acid copolymers refer to one or two copolymers among methacrylic acid-hydroxyethyl acrylate copolymer co-MAA-HEA of which the molecular weight is 50000-6000 and the block proportion MAA: HEA is (3-4): 1, methacrylic acid-hydroxy-propyl acrylate copolymer co-MAA-HPA of which the molecular weight is 40000-50000 and the block proportion MAA: HPA is (4-5): 1 and methacrylic acid-ethyl acrylate co-MAA-EA of which the molecular weight is 30000-40000 and the block proportion MAA: EA is (4-6): 1. The concrete synergist is free from strong odor and toxicity, high in efficiency and environmental friendly.
Description
technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete synergist and a preparation method thereof. Background technique [0002] Concrete is the largest artificial stone, and it has an irreplaceable position for any other building materials. The emergence and development of concrete admixtures are a milestone in the innovation of concrete technology. The indispensable fifth component besides the admixture. However, research data on the hydration degree of cement in concrete at home and abroad show that under normal circumstances, about 20-30% of the cement in concrete does not participate in the hydration reaction and does not function normally, which is the biggest waste of cost in concrete applications. [0003] Concrete synergist is a new type of concrete admixture, which can make cement fully hydrated, save about 10-15% of cement consumption, improve the construction performance of concrete, imp...
Claims
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