Colophony of not saturated polyester (Unsaturatedpolyesterresins) is to point to to not saturated key is had on molecular catenary (be like Shuang Jian) polyester high polymer. Not saturated n duality is acerbity (or acid anhydride) , saturated n duality is acerbity (or acid anhydride) as mellow as n duality (or multivariate mellow) undertake below certain condition condensation polymerization reaction forms not saturated polyester, not saturated polyester is deliquescent the cross-linking monomer at certain amount (like styrene) in form liquid colophony to be colophony of not saturated polyester namely. Colophony of not saturated polyester is joined cause a system to be able to react form stereo and reticulate structure not dissolve not material of frit high polymer, the colophony of hot solid sex that is a kind of model so. The advantage with colophony of not saturated polyester and more distinct than having its photograph of colophony of sex of solid of other and numerous heat. Introduce according to expert of net of not saturated colophony, colophony of not saturated polyester has good fabricating characteristics, can be in room temperature (not under 15 ～ 20 ℃ ) , often press next solidify to shape, do not release any by-product. And resinous viscosity is more appropriate, can use a variety of treatment to shape method, if hand paste shapes, eject shapes, pull crowded shape, note model to shape, twine shape etc. Colophony of not saturated polyester is called on industry the contact shapes or low pressure shapes colophony of hot solid sex.
One, overview 4, application of resinous of not saturated polyester is not saturated polyester is inchoate and main use as coating and pouring shape, appeared 1942 polyester glass reinforced plastics (namely fibre glass enhances polyester) hind, because the huge advantage of product of glass reinforced plastics and craft, development is very rapid. Introduce according to expert of net of not saturated colophony, from this UPR colophony uses main component to fiber increases and be not fiber to enhance two kinds big. The 70% ～ that at present the glass reinforced plastics in foreign polyester wastage occupies total wastage 80% . Technology of processing of glass reinforced plastics papers a law besides the hand besides, still have twine law of law, cold mould pressing, low pressure to shape law and pouring the law. 20 centuries 70 time end and 80 time initial stage, the United States shapes with eject the law is given priority to, japan, England and France paper a law to give priority to with the hand. 20 centuries the later period in 80 time, traditional hand papers craft to show downtrend, eject shapes law year after year rises, mould pressing shapes also twice increases by degrees, mix as electronic electric equipment of late especially the development of auto industry, agree with the mould pressing craft of these products obtained remarkable development again. At present foreign FRP machines course of study to develop to direction of mechanization, automation stage by stage, a few different treatment still cannot leave hand paste to shape. Shape to eject the law basically will quantify directional development to eject equipment high pressure henceforth. Mould pressing shapes the treatment that the law basically uses at SMC and BMC, and twine a law to divide outside basically be being used at canal, canister and press press container, still use at XMC to make. Introduce according to expert of net of not saturated colophony, continuous method is commonly after pointing to successive macerate colophony, shape below constant pressure, reentrance 130 ℃ of 80 ～ solidify area, treatment pressure is O.02 ～ O.2MPa, deliver rate to be 2 ～ 5m/min. American FRP basically applies at canister of car component, conduit, lay aside, building materials, shipping to wait; Japanese FRP is provided in wholesome clean, the application on industrial machinery is more, other still spare parts of container, building materials, shipping, car waits; Vitreous steel tube of Europe and technology of lay aside canister are in banner level, watch 2-5 distributes circumstance list for American UP utility, watch 2-6 distributes a case for Japanese UP utility.
State of consumption of resinous of UP of watch 2-5 United States
