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Encyclopedia of Coupling Agents
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Encyclopedia of Coupling Agents
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2020-10
29
Titanium ester coupling agent can improve the surface modification effect of calcium carbonate
Most of the fillers used in composite materials are natural or artificially synthesized inorganic fillers, which are polar and water-insoluble substances. When they are dispersed in organic polymer resins with extremely low polarity, poor compatibility often occurs due to the polarity difference bet
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2020-10
29
General process and pretreatment methods for modified fillers with titanium ester coupling agents
1. Selection of modified equipment:Powder surface modification machine, high-speed mixer, etc. If a high-speed mixer is selected, the rotational speed>1000r/min, with a volume of 200-500L, the required powder material is rotated at high speed in the mixing chamber. The high-speed rotating materia
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2020-10
29
Application of Titanate Coupling Agent in Hard PVC Filled Plastics
Coupling agents are key additives for improving the performance of polymer composite materials and ideal excipients for reducing the cost of polymer composite materials. Coupling agents, as surface modifiers for inorganic fillers, improve the compatibility between fillers and resins. Fillers are mor
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2020-10
29
General principles for selecting silane coupling agents
1、 General principles for selecting silane coupling agentsIt is known that the hydrolysis rate of silane coupling agents is determined by the silicon group Si-X, while the reactivity with organic polymers is determined by the carbon functional group C-Y. Therefore, it is crucial to choose the
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2020-10
29
Application and precautions of titanium ester coupling agent in coatings
1. Application mechanism:(1) The difference between coupling agents and surfactants:In the process of coating manufacturing, it is necessary to disperse hydrophilic polar substances such as pigments and fillers into hydrophobic non-polar organic binders. In order to increase the affinity betwe
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2020-10
29
Usage method of titanium ester coupling agent
Before selecting a coupling agent, the moisture content of the filler used should be measured first. The specific variety should be determined based on the moisture state and the characteristics of the various titanium acid esters mentioned above. Dry fillers should be monoalkoxy type, while wet fil
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2020-10
29
What are the precautions for using titanium ester coupling agents?
Coupling agent, also known as adhesion promoter or surface treatment agent, is a substance with amphoteric structure. It is centered around titanium, and one end of the molecule can react with chemical groups on the surface of inorganic substances to form strong chemical bonds; The other end group h
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2020-10
29
Several suggestions for the selection of titanium ester coupling agents
Suggestions for the selection of titanium ester coupling agents:1. Try not to add other surfactants as they can interfere with the reaction of titanium esters on the surface of the filler.2. Zinc oxide and stearic acid have a certain degree of surfactant activity, so they should be added after
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