1. For a long time, in chemical, petroleum, pharmaceutical and food industries, control, transmission medium corrosion resistance of the valve on the pipeline as usually adopt stainless steel, enamel, ferrosilicon, ceramic and ptfe corrosion-resistant materials, such as glass fiber reinforced plastic is nearly 50 years development of agile a composite materials. Glass is the glass fiber as reinforcing material, synthetic resin as binder reinforced plastics. With the development of the glass fiber reinforced plastic in China, as the strengthening of plastic base material, is made of glass fiber expanded to carbon fiber, boron fiber, aramid fiber, alumina fiber, silicon carbide fiber and so on. Because FRP relative to other material has more excellent resistance to chemical corrosion, glass steel pipe and valve has been widely used. As ordinary stainless steel valve in the high temperature hydrochloric acid and alkali conditions can't be used alternately, glass fiber reinforced plastic valves on price only 1/3 of the same size stainless steel valves. 2. At present domestic fiberglass resin mostly USES the material of stainless steel ball valve, modified phenolic resin as usually adopts chopped fiber reinforced. So much of the FRP stainless steel ball valve can only be used under the condition of PN6, greatly limit the range of application, make FRP excellent corrosion resistant performance is not done in play. For content industries growing demand Industrial Valves use and various rigours necessary to use the environment, must to the existing of glass fiber reinforced plastic Industrial Valves material and production process improvement, make it suitable for higher pressure range. This paper for the continuation of the glass fiber reinforced material mechanics performance of glass fiber reinforced plastic, experimental study on the basis of glass fiber reinforced plastic material performance parameters of the known export FRP stainless steel ball valve design points. 3. Stainless steel ball Industrial Valves used in the manufacture of the valve to the current domestic FRP material selection important substrate material of epoxy resin and phenolic resin ( Including its modified varieties website construction company, such as: polyvinyl butyral modified phenolic, xylene modified phenolic resin, epoxy phenolic formaldehyde resin, etc. ) Give priority to, vinegar FRP valve and modified gorge nan resin glass fiber reinforced plastic valve has a small amount of production. As strengthening material of glass fiber is different situation, but limited to the molding process, important using chopped fiber reinforced situation. Short glass fiber reinforced composite material performance is not high, all kinds of glass fiber reinforced plastic valve operating temperature limit is 120 ~ 140 ℃ as usual, working pressure to zero. 8 to 1. 0MPa。 The working pressure range only proportionate to the low-pressure area work pressure range. 4 material mechanical performance test 4. 1 test material test with material, composite material namely thick plate by the continuation of the glass fiber strengthen vinyl resin, fiber structure situation and molding process and new type glass fiber reinforced plastic stainless steel ball valves produced by the continuation of strengthen the fiber structure and molding process conditions are equally, fiber content is the same. To facilitate the test surface ( Between the layers) Loading conditions, the performance of the composite materials, production of raw materials plate thickness is 60 mm. 4. 2 test process according to the standard requirements of the size of the test sample, made eight groups ( Each set of 5) The sample. Fix the specimen on the CSS electronic universal testing machine, and the load sensor, controller, power amplifier and computers connected to work together. Along the surface of inside and outside two direction, cutting sample 5 root, root cutting of 10 specimens. Test under the environment of 25 ℃, each set of test repeat five times. ( l） Tensile test test the loading speed of 1 mm/min, records the response of a load displacement curve of connected sensors, in-plane tensile use YJY - at the same time 13 b stretch meter records corresponding to the load deformation curve. Through calculation will record the load deformation curve into a response to the stress strain curve, get the overall composite materials tensile elastic modulus and tensile strength. ( 2) Compression test test loading speed of 0. 5 mm/min, at the same time, record the response of displacement load curve. Compression test strength side is always diameter is 80 mm cylinder, sample in the middle of the cylinder, beam through testing machine moved up and down the sample strength. Will record the deformation curve of load into stress response after a strain curve, get compressive elastic modulus and compression strength of the composite material. ( 3) Bending test test the loading speed of 1 mm/min, personnel test sample as a laminated beam is chengdu, transverse three point bending test, and record the response in the middle of the displacement load curve. Through calculation will record the load deformation curve into a response to the stress strain curve, get the bending elastic modulus and bending strength of the composite. 4. 3 test results from the experiment measured the continuation of fiber reinforced composite material performance effect within the surface average as you can see, the continuation of fibre strengthen the mechanical properties of glass fiber reinforced plastic is the short cut fiber reinforced glass fiber reinforced plastic has obvious promotion, in-plane tensile strength compared with chopped fiber reinforced glass fiber reinforced plastic tensile strength and progress more than twice. This is because as the FRP strengthened material is fiber glass reinforced plastic bearing important part of the continuation of fiber reinforced, the percentage of fiber can be as high as 70%, and chopped fiber reinforced glass fiber reinforced plastic fiber content is only 40%. Of course, the mechanical properties of glass fiber reinforced plastic and other factors, such as the kinds of resin, etc.
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