Polycarboxylic Superplasticizer Monomer Polycarboxylate Superplasticizer is used as a high range Water Reducing Admixture in high performance concrete, high strength concrete, high volume fly ash/slag concrete, cement grouting, and dry mortar. These polymers are used as dispersants, especially for early strength concrete, to avoid particle segregation. Polycarboxylic Superplasticizer Monomer,Polycarboxylate Ether Monomer,Polyether Monomer Tpeg,Isopentenyl Polyoxyethylene Ether Shenyang East Chemical Science-Tech Co., Ltd. , https://www.eastchemy.com
The preparation method of the polycarboxylate superplasticizer by graft copolymerization of fatty acid vinyl ester onto acrylate polymer involves four steps in order of polymerization, graft copolymerization, alcoholysis and hydrolysis, which are provided in this patent.
Connecting rod big end hole chamfering fixture
The large end hole of the connecting rod has high chamfering requirements and is not easy to clamp. If you are working on a bench drill, you need to design a special chamfering knife. For this reason, we use elastic expansion clamps, which are more convenient to chamfer on the ordinary lathe. The inner hole of the clamp plate 2 (Fig. 1) is clamped on the lathe main shaft with the three-jaw chuck 1 and the mandrel 7 is tightly clamped by the nut 10. Fastened in the clip plate 2, the elastic expansion sleeve 8 is mounted on the mandrel 7, the taper hole and the mandrel