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Polycarboxylate superplasticizer for machine-made sand concrete prestressed component and preparation method of polycarboxylate superplasticizer
The invention discloses a polycarboxylate superplasticizer for a machine-made sand concrete prestressed component and a preparation method of the polycarboxylate superplasticizer. The polycarboxylatesuperplasticizer is prepared from the following raw materials in parts by mass: 50-100 parts of polyether macromonomer, 20-40 parts of an ester macromonomer, 5-15 parts of maleic acid-beta-cyclodextrin, 5-15 parts of styrene, 30-60 parts of an acrylic monomer, 10-30 parts of unsaturated phosphate and 5-25 parts of an ammonium cation unsaturated monomer in a free radical polymerization manner so asto prepare a polymer with the molecular weight of 15000-80000; and 0-4 parts of an organic silicon defoamer, 0-10 parts of an early strength agent and 5-15 parts of a sacrificial agent are compounded, and then an alkaline solution is added for neutralization. The polycarboxylate superplasticizer has high tolerance to the stone powder content of machine-made sand concrete, good water reducing andviscosity reducing effects and an early strength function, meets the production requirements of machine-made sand concrete prestressed components in the fields of railways, highways, water conservancyand the like, and in particular, is used for preparing high-strength prestressed components with low water-binder ratios.
一种机制砂混凝土预应力构件用聚羧酸减水剂及其制备方法，该聚羧酸减水剂通过下列质量份数的原材料制备而成：聚醚大单体50～100份、酯类大单体20～40份、马来酸‑β‑环糊精5～15份、苯乙烯5～15份、丙烯酸类单体30～60份、不饱和磷酸酯10～30份、铵阳离子不饱和单体5～25份以自由基聚合的方式制备出分子量为15000‑80000的聚合物，复配有机硅类消泡剂0～4份、早强剂0～10份、牺牲剂5～15份，然后加入碱溶液中和。本发明提供的聚羧酸减水剂对机制砂混凝土石粉含量容忍度高，减水降粘效果好，并具有早强功能，满足铁路、公路、水利等领域的机制砂混凝土预应力构件的生产需求，特别是低水胶比的高强度预应力构件的制备。
Polycarboxylate superplasticizer for machine-made sand concrete prestressed component and preparation method of polycarboxylate superplasticizer
The invention discloses a polycarboxylate superplasticizer for a machine-made sand concrete prestressed component and a preparation method of the polycarboxylate superplasticizer. The polycarboxylatesuperplasticizer is prepared from the following raw materials in parts by mass: 50-100 parts of polyether macromonomer, 20-40 parts of an ester macromonomer, 5-15 parts of maleic acid-beta-cyclodextrin, 5-15 parts of styrene, 30-60 parts of an acrylic monomer, 10-30 parts of unsaturated phosphate and 5-25 parts of an ammonium cation unsaturated monomer in a free radical polymerization manner so asto prepare a polymer with the molecular weight of 15000-80000; and 0-4 parts of an organic silicon defoamer, 0-10 parts of an early strength agent and 5-15 parts of a sacrificial agent are compounded, and then an alkaline solution is added for neutralization. The polycarboxylate superplasticizer has high tolerance to the stone powder content of machine-made sand concrete, good water reducing andviscosity reducing effects and an early strength function, meets the production requirements of machine-made sand concrete prestressed components in the fields of railways, highways, water conservancyand the like, and in particular, is used for preparing high-strength prestressed components with low water-binder ratios.
一种机制砂混凝土预应力构件用聚羧酸减水剂及其制备方法，该聚羧酸减水剂通过下列质量份数的原材料制备而成：聚醚大单体50～100份、酯类大单体20～40份、马来酸‑β‑环糊精5～15份、苯乙烯5～15份、丙烯酸类单体30～60份、不饱和磷酸酯10～30份、铵阳离子不饱和单体5～25份以自由基聚合的方式制备出分子量为15000‑80000的聚合物，复配有机硅类消泡剂0～4份、早强剂0～10份、牺牲剂5～15份，然后加入碱溶液中和。本发明提供的聚羧酸减水剂对机制砂混凝土石粉含量容忍度高，减水降粘效果好，并具有早强功能，满足铁路、公路、水利等领域的机制砂混凝土预应力构件的生产需求，特别是低水胶比的高强度预应力构件的制备。
Polycarboxylate superplasticizer for machine-made sand concrete prestressed component and preparation method of polycarboxylate superplasticizer
一种机制砂混凝土预应力构件用聚羧酸减水剂及其制备方法
JIN HAO (author) / LI HUAJIAN (author) / YI ZHONGLAI (author) / HUANG FALI (author) / WANG ZHEN (author) / XIE YONGJIANG (author) / YUAN ZHENGCHENG (author) / WEN HAO (author) / ZHONG XINHUA (author) / XIE QINGQING (author)
2020-08-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2022
| European Patent Office | 2023
| European Patent Office | 2022