Sizing agent special for ultra-low adsorption resin concentration chopped roving

Abstract

The invention discloses a special size of chopped twistless roving with ultra-low resin absorbing-capacity, comprising coupling agent, lubricant, antistatic agent A, antistatic agent B, film forming agent A, film forming agent B, film forming agent C and a pH value regulator; all the materials respectively accounts for 1 to 10 percent, 1 to 10 percent, 1 to 5 percent, 1 to 5 percent, 10 to 80 percent, 80 to 10 percent, 1 to 5 percent and 0.1 to 5 percent and water as the rest; the content of the water accounts for 85 to 95 percent of the total weight of the size; the coupling agent adopts silane coupling agent, the lubricant adopts water-soluble grease lubricant, the antistatic agent A adopts organic salt substance with good water absorptivity, the antistatic agent B adopts inorganic salt substance with good water absorptivity, the film forming agent A, the film forming agent B and the film forming agent C respectively adopts one of epoxy emulsion, polyester emulsion, polyvinyl acetate (PVAc) emulsion and polyurethane emulsion; the film forming agent C selects compound with low degree of polymerization, the pH value regulator adopts acid and the pH value of the size is 3 to 11. The size can improve the penetration velocity under the situation of meeting the requirements of the chopped technique, achieves the high content of the glass fibre and ultra-low content of resin, improves the production efficiency of the client and reduces the production cost.

Description

technical field [0001] The invention relates to a glass fiber-reinforced thermosetting resin technology, in particular to a special sizing agent for ultra-low resin-absorbing chopped roving that meets the needs of high-end customers. Background technique [0002] As an important form of energy, petroleum is also the main source of chemical raw materials. As petroleum is a non-renewable energy source, with the demand of economic development, the price continues to rise, which directly leads to the rise in the price of downstream derivatives, especially the price of resin, which is the matrix material of composite materials, also continues to rise. The price of glass fiber, another important material for composite materials, remained basically stable. How to control the rising cost of composite materials has become an extremely important research topic for major composite material manufacturers. [0003] It is a big development trend to reduce the amount of resin and appropr...

AI Technical Summary

Problems solved by technology

The reduction of resin content means that during the use of glass fiber, the chance of soaking will become less and less, and the overall soaking speed of the yarn will become slower and slower, which greatly affects the production efficiency and product quality.