1, general situation
Pull crowded glass reinforced plastics to shape craft, be in early studied with respect to somebody 1948, was in the United States to register above all 1951, obtain patent. 60 time progress is slow, 70-80 time enters rapid development phase.
Our country pulls crowded glass reinforced plastics to shape the research of craft starts not late. 251 factories of Beijing produced vitreous steel tube with playing crowded way 1968, pulled 1974 make gave profile of groovy form glass reinforced plastics, drew the horizontal thick line that makes a gymnastic equipment parallel bars, uneven bars 1982; And the wedge of electric machinery chamfer that trial-produce succeeds to be matrix with phenolic aldehyde colophony. University of industry of 70 time Wuhan produced small diameter garden with playing crowded way sectional pull rod and antenna. Above product is to use homebred colophony and fibre glass raw material, of the engineering technology that oneself fumble and equipment research development help crowded technology.
Since 1985, introduce from abroad pull crowded shape product line of glass reinforced plastics many 30, concerned unit still combines production actual, digest draw product line of design of foreign technology proper motion, treatment 70, the whole nation pulls crowded glass reinforced plastics to shape total productivity is close more than tons 30 thousand. At the beginning of 90 time, factory of steel tube of sanded city of Hubei of head office of oil natural gas and island of emperor of the Qin Dynasty steelworks of boast China glass parts to be united in wedlock in order to introduce technology and phase of proper motion development, development produces oil to collect sucker rod, get of oil branch approbate, already used at actual production. 90 time, our country pulls crowded glass reinforced plastics course of study greeted the first spring, size pulls crowded factory to be built in succession, begin development to use pull crowded law to produce profile of window of door of glass reinforced plastics. Through assiduous research of nearly 10 years, technology of window of door of our country glass reinforced plastics already entered mature all phase. Classics " quality of national construction project is supervised examine center " and " quality of national construction project is supervised examine center " mix to profile of glass reinforced plastics respectively of the window detect the result all achieved colophony of China of level of national door window online.
2, pull crowded glass reinforced plastics to shape craft
2.1 raw material
Help the technology that squeezing is profile of linear of glass reinforced plastics of a kind of production, the raw material that it uses is colophony of not saturated polyester and border area fibre glass are not had twist roving reachs mat, the high-powered composite material that it produces suits the use of all sorts of industries.
2.1.1 colophony
Pull crowded shape glass reinforced plastics is main colour is not saturated polyester colophony, occupy about pull crowded shape the 90% above of craft colophony dosage, still have sex of colophony of epoxy resin, vinyl, hot solid additionally colophony of methylic third acerbity colophony, modified phenolic aldehyde, anti-flammability colophony.
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