GQ-206S1 accelerator is a liquid accelerator, the main ingredients of sodium aluminate, and its main role is to regulate concrete setting and hardening speed, so that after the concrete jet set and harden in a very short span of time, widely used temporary or permanent support member defense, coal, railway, water and electricity, geology, tunnel and other projects, is an environmentally friendly additive. Homogeneity ◎ Specifications: ◆ Appearance: colorless or pale yellow liquid. ◆ solid content of 48% ± 0.2%, density 1.35 ± 0.015g / ml. ◎ The main technical performance: ◆ dosage is 3-5% polycarboxylate liquor smooth synthesis, can also be adjusted according to the performance of cement. ◆ under standard environmental conditions, water-cement ratio should be 0.4, the initial setting time of cement paste ≤5min, final setting time ≤10min. ◆ incorporation of the agent, one day strength can be increased 1-3 times, about 28 days is not mixed with the intensity of 80%. ◆ little dust, low rebound, to facilitate construction. ◎ Using the methods and precautions: ◆ recommended when using this product should be deducted from the construction of water about 5% for dilution accelerator, it will help to improve the workability of sprayed concrete, improve the flow of working face, so smooth concrete surface beautiful. ◆ fresh cement should be used to prohibit the use and storage of outdated cement does not meet national standards. Synthesis of the production process diagram: →→ esterification and polymerization reaction →→ →→ →→ liquor finished (1) esterification reaction (preparation of large single-family): Measurement of polyethylene glycol polycarboxylic acid liquor synthesis Tunliu , which was dissolved in a water bath, the reaction vessel was added, while adding methacrylic acid, and a small material part (hydroquinone and phenothiazine ratio of 5: 1), heated to 90 ℃, was added concentrated sulfuric acid (as catalyst), continue to heat up to 120 ℃, maintaining 4.5h, after sufficient nitrogen 2 hours, (6㎡ / when filling a bottle every 30 minutes, a total of four bottles), the reaction was completed, to obtain an intermediate macromonomer polymer superplasticizer glycol monomethacrylate and water. (By vacuum distillation → → dehydration, acidification is more complete). (2) Polymerization: Using ammonium persulfate initiator aqueous solution polymerization. Measurement esterification product i.e. polyethylene glycol mono methacrylate, acrylic acid, dodecyl mercaptan molecular weight modifier, with deionized water, pumped into tank A standby titration, is A material. Measurement of ammonium persulfate, with deionized water, pumped into tank B alternate titration, B is expected. Adding deionized water into the reaction vessel polycarboxylic acid synthesis mother liquor was heated to 85 ℃, while titration A, B material. A complete feed three hours titration Qin County polycarboxylate synthetic mother liquor, B feed 3.5 hours titration finished, incubated for 1.5 hours. (Temperature control: 90 ± 2 ℃). (3) and reaction (is concentrated sulfuric acid esterification catalyst and being used above), the reaction is a good polymer cooling to below 50 ℃, stirring addition of soda ash, until the PH value of about 7, reaction complete, get Polycarboxylate liquor. Linfen polycarboxylic acid synthesis mother liquor Tunliu _ _ high-strength synthetic polycarboxylate liquor Building Materials (certified merchants) are provided by high-strength Materials Co., Ltd. Linyi City. Linyi high-strength building materials Limited (www.lygqjc.cn) is specialized in "polycarboxylate superplasticizer, polycarboxylate liquor, poly carboxylic acid liquor," the business, the company adhering to the "honesty, hard service" concept, in order to You provide the most quality products and services. Welcome to inquire! Contact: Zhu Meng income.