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Polyether macromonomer HPEG/TPEG/APEG

Views:5     Author:Maia     Publish Time: 2021-06-23      Origin:Site Inquire

Polycarboxylic acid water reducer is known as the third generation of high performance water reducer.

Compared to the previous generation of naphthalene series water reducer, Polycarboxylic acid superplasticizer has the characteristics of higher water reduction rate, stronger cement adaptability and better slump protection effect, in the early stage, polycarboxylic acid superplasticizer was ester product. Due to the complex synthesis process, it has been gradually replaced by ether monomer.

Polyether monomer, namely polycarboxylic acid superplasticizer monomer, is the main raw material for the synthesis of polycarboxylic acid superplasticizer with high performance, which can be divided into allyl polyoxyethylene ether (APEG) isopentyl polyoxyethylene ether (TPEG). Methylallyl polyoxyethylene ether (HPEG) ethylene glycol monovinyl polyethylene glycol ether (EPEG,2+2 monomer), among which TPEG and HPEG large monomer occupy a large proportion of the domestic market polyether large monomer and molecular containing active hydrogen glycol fatty alcohol and other starting agents in the action of the catalyst addition polymerization reaction, the main process includes nitrogen replacement Feeding pre-reaction and reaction ripening debranching discharge, etc.

The concrete prepared with polyether large single system high efficiency water reducing agent has excellent durability and frost resistance, and has become the mainstream water reducing agent in the field of concrete. The concrete prepared with polyether large single system has excellent durability and frost resistance, and has been widely used in high-speed railway, subway engineering, expressway super high-rise buildings and other fields.

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HPEG-2400 &TPEG-2400


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