Application-Nanjing Herun Coupling Agent Co., Ltd.

Modification of nano calcium carbonate and its application in PVC industry

Plastic filling modification has a long history, its original intention is to reduce costs, such as adding calcium carbonate to PVC hard products, not only can reduce production costs, the appropriate amount of addition can also improve the mechanical properties of PVC hard products. With the focus of material science research turning to nano-materials, the application of nano-calcium carbonate in PVC industry has been widely valued.

2021-06-08

Titanate coupling agent, an all-round coupling agent

Titanate coupling agent first appeared in the 1970 s. In December 1974, Kenrich Petrochemical Company of the United States reported a new type of coupling agent, which has a good coupling effect on many dry powders. Since then, inorganic filled polyolefin composite materials with titanate coupling agent have been published. In recent years, a series of titanate coupling agents developed by Kenrich companies in the United States have been widely used. Carbon black activated with titanate coupling agent, SiO2, CaCO3, metal oxides added to thermoplastics and rubber can reduce the system viscosity, improve toughness and mechanical properties.

2021-06-08

Surface modification of calcium carbonate

Surface modification is an important processing technology to improve the application performance of calcium carbonate, improve the applicability, expand the market and the amount of the necessary, at present, there are mainly inorganic surface treatment, organic surface modification, polymer surface modification, mechanical force chemical modification and high-energy surface modification and other five categories of methods.

2021-06-08

Titanate coupling agent series application

Titanate coupling agent is a coupling agent developed by Kenledge Petrochemical Company in the late 1970 s. For thermoplastic polymers and dry fillers, there is a good coupling effect; This kind of coupling agent can be expressed by the general formula: ROO(4-n)Ti(OX-R 'Y)n (n = 2,3); Where RO-is a hydrolyzable short chain alkoxy group that can react with hydroxyl groups on the surface of inorganic substances, thus achieving the purpose of chemical coupling......

2021-06-08

What are the applications of silane coupling agents?

Silane coupling agents are also known as vinyl silane, amino silane, epoxy silane, mercapto silane and methacryloxy silane, etc., which are commonly used silane coupling agents. Its application can be summarized into three aspects

2021-04-07

Silane coupling agent in what pH value under the condition of the slowest hydrolysis reaction?

In general, the silane coupling agent has the slowest hydrolysis reaction rate in water with a pH value of 7, that is, the hydrolysis rate in neutral water. Acid or alkali for silane hydrolysis reaction has obvious catalytic acceleration, so non amino silane hydrolysis generally to the pH value of the aqueous solution to 3~5 that is acidic conditions; and amino silane solution has strong alkaline, so most amino silicon hydrolysis directly use neutral water on the line.

2021-04-07

What are the factors that affect the rate of hydrolysis of silane coupling agents?

Silane coupling agent is a kind of alkoxysilane, its alkoxy water will occur hydrolysis reaction, into hydroxyl silane (I. e. silanol), while releasing the reaction by-products-the corresponding alcohol (methoxy silicon hydrolysis reaction after the release of methanol, ethoxy silane hydrolysis reaction after the release of ethanol). This reaction is the hydrolysis reaction of silane coupling agent, and the factors that affect the speed of this reaction are as follows:

2021-04-07

Effect of KH550 silane coupling agent on the structure and dielectric properties of composites

The surface of Ba TiO3 powder was treated with KH550 silane coupling agent, and the Ba2TiO3 / PVDF composite was prepared by solution mixing method and hot pressing process. The morphology of the composites was analyzed by scanning electron microscopy, and it was found that the amount of coupling agent had a great influence on the morphology of the composites;

2021-04-07

Performance characteristics of silicone for coating production

Silicone coatings have good heat resistance and high and low temperature resistance, moisture resistance, water resistance, and excellent stability to ultraviolet rays, so they are often used as heat-resistant coatings, electrical insulation coatings, and weather-resistant coatings.

2021-04-07

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