The development of composite material of calcium carbonate of new-style accept rice

Average accept rice level is plastic fill mother makings, easy generation " reunite " phenomenon, the influence uses the effect. The depolymerization agent that company of plastic science and technology develops Yun Peng of Shaanxi treasure chicken reachs calcium carbonate of depolymerization accept rice, can solve this one problem effectively. Plastic mother makings summarizes auxiliary of plastic mother makings, it is the condensate of all sorts of plastic additive, say auxiliary mother expects again, abbreviation mother makings or mother bead. The ideal structure that the mother expects should divide composition by 4, most in the part of core of main body component that the layer expects for the mother, rise to raise index of some kind of function to perhaps reduce the effect such as cost; The 2nd is occasionally couplet layer, by coupling agent or cross-linking agent composition, the purpose is to raise the adhesion between core layer and colophony; three-layer is dispersive layer, by a few oligomer and dispersive agent composition, the purpose is to mix even, avoid core layer to gather, increase the liquidity in the process that build bead; The 4th, namely the outerest it is to add mix a layer, by the copolymer that has certain Shuang Jian, all get together content or composition of look look agent, the purpose is with what want modified colophony can be united in wedlock better. Sometimes the structure that the mother expects, do not have so complex, have structure of simple layer or two three-layer only, modified effect is a bit poor. The swift and violent development of plastic to driving industry removed auxiliary of plastic mother makings very big effect, its are main the characteristic is: Can simplify manufacturing process; Raw material mixes convenient, the quality that mix refine is even, increase manufacturing efficiency and goods function quota; Reduce dust to fly upwards those who reach pair of device wear away; Reduce what screw cleans when goods is changing color to use makings amount; The expiration period that extends raw material to store. Inorganic filling modified is at present plastic the production method that the mother expects is already mature, but the effect after stuff is plastic is poorer, and fill amount is small, the user is dissatisfactory. Successors begin to use filling of inorganic of accept rice class (should be under 100nm) manufacturing modified is plastic composite material. Accept rice class is plastic fill mother makings, applicable wait for a domain at goods of plastic material of goods of plastic and product of farming ground film, hollow bucket, plastic pipe, plastic inject. Add quantity basis particular product is controallable in 5%-30% . But actually, the filling of accept rice inorganic that appears on the market, did not reach accept rice level. After product production comes out, when arriving through carrying in user hand, not be filling of accept rice class any more, exceed 100nm far, became 200, 300, 500 Nm. Because accept rice is had,this basically is extremely strong collect a gender, be opened extremely hard, namely alleged " reunite " , it is one kind exceeds only fine fill strong " Yanami " . Such users spent the money of filling of accept rice class, but those who buy is makings of mother of modified of rice of accept of average level filling however, very dissatisfactory. Company of plastic science and technology solved Yun Peng of Shaanxi treasure chicken basically this problem, filling of class of rice of the accept in mother makings reachs 90%-95% level, the accept rice that only 10% is control because " reunite " phenomenon, its dimension size exceeds accept rice level. Experiment process solves filling of accept rice class " reunite " the method of the problem has commonly: Eliminate the appearance electrostatic law, undertake the surface activator is handled and undertake in inorganic filling accept rice inserts a variety of methods such as the layer. Treasure chicken Yun Peng is plastic company of science and technology from begin 10 years ago, through on 1000 experiment, develop a depolymerization agent and calcium carbonate of depolymerization accept rice successfully eventually, and research and development goes out produce the technique of agent of this kind of depolymerization and special equipment. Is raw material basic is modified of filling of inorganic of class of recipe accept rice plastic does the mother expect basic recipe is as follows: ? Arrogate to oneself of a keeper of domestic animals allows paragraph of Gao  He?0%-80% of general of salty prostitute Gou; ② polyethylene carrier occupies 20%-70% ; ③ polyethylene candle divides powder to occupy 3%-5% ; ④ olefin lubricant occupies 3%-5% ; Flexibilizer of glue of third of 3 yuan of second occupies ⑤ 2%-5% ; ⑥ silicon alkyl kind, titanium acerbity ester kind coupling agent occupies 2%-5% ; ⑦ abstains depolymerization agent to occupy 2%-5% . Equipment arranges afore-mentioned place filling to mix in special mixture boiler, integrated machinery all pledges principle and colloid grind abrade principle, can better land gets together accept rice the group arrives dispersedly equably class of accept rice amount. Undertake coupling agent wraps Fu at the same time (exterior activator wraps Fu) , afore-mentioned particle that reunite in order to make so (100nm above, 200, 300, 400, 500nm) it is 100nm the following particle dispersedly. Use special mixture boiler, pin of axis of the agitate part of a historical period that sets inside, agitate, agitate undertakes cutting at the same time. In this kind powerful shearing force falls, the particle that has reunited is opened, be wrapped by coupling agent immediately at the same time Fu, after preventing to open, reunite again, such effects are idealer. Adopt this method, achieved the goal that filling of 90%-95% accept rice does not reunite, the operation is simple, cost is reduced, agree with mass industrialized production. Craft course says to weigh - burden - mix - decomposite - double screw is crowded piece - build bead - examine - put in storage. Good metage of afore-mentioned all sorts of raw material, auxiliary, in pouring high speed kneading machine (or in mixture boiler, or in mixer) mixture 5-20 minute, mix rate 500-2500 turns / cent, give material temperature to make an appointment with 50-100 ℃ . Give makings hind, in double screw squeeze in plastic extruder piece build bead, extruder from arrive into makings mouth build bead, heat temperature cent is 4 paragraphs, ordinal for 160, 180, 200, 220 ℃ , nose is 220 ℃ , nose place undertakes face of wind cold pattern cuts bead. Particle diameter 3mm, particle height 3mm. The graph below experimental result and analysis of electron microscope of Nextpage of analytic function test is the differs with two after dispersing electric lens photograph before dispersing. Child microscope photograph: 10 kilovolt voltage, 20 thousand times particle observes below scanning electron microscope (35 kilovolt, 150 thousand times) , particle size all is under 100nm, and dispersive and even, grain surface outward appearance is good. The ball in ball mill is ground child the different item that lists filling for afore-mentioned place is counted (eye / square) between 100-5000 eye. By the graph knowable, accept rice particle distributings even, the product is mechanical performance is good. Pass contrast, we can see, the calcium carbonate of accept rice class before dispersing reunites the phenomenon is more serious, it is the little grain that holds posse in the arms everywhere almost. And from inside the photograph after dispersing, can see calcium carbonate of class of affirmatory accept rice can be dispersedly equably in mother makings. And, form all round calcium carbonate particle " island " structure, its interface blurs each other, explain resultant force of its put together is more powerful. We also looked for a few other camera lens hard, still discover the camera lens that is interfacial faintness, explain fill mother expects integral level is tolerable still. The affiliation of particle of accept rice inorganic measures the bulk mark that cannot surpass these break, this is the reason seat that a lot of plastic modified systems add particle of inorganic of rice of pay of very few amount to be able to rise to enhance the result that add pliable but strong. Particle of accept rice inorganic adds effect of pliable but strong to plastic buildup is to pass active surface and active atom to center and high polymer catenary produce chemical bond or molecular intercrop is used and make the high polymer catenary of two walls produces break join. Of the crazing of decision of old young general of this kind of active force how many or the size of outside stress. Because this uses accept rice inorganic when particle modified is plastic, the exterior active that how be protected or increases particle of accept rice inorganic and reaction center are very crucial. When particle of inorganic of the rice that do not have accept, plastic inside, outside below stress action, formation crazing can expand ruinous break further, bring about material macroscopical rupture. And below the circumstance that in accept rice inorganic particle exists, particle of accept rice inorganic enters formation interstitial and interstitial interior, through accept rice inorganic particle active surface is mixed the active force of active and atomic center and high polymer catenary is formed " filiform joins " structure, and the break that makes arise condition of translate into crazing. Be stopped as a result of break and condition block delayed translate into crazing to rupture plasticly, because this needs to use up more outside energy or greater stress gift to make material ruptures again, increase plastic concussion tenacity and tensile strength thereby. When accept rice inorganic particle content is overmuch, form reunite system comes when certain measure, because reunite,body dimension exceeds space of interstitial system interior, particle of accept rice inorganic cannot enter interstitial interior, make break cannot be changed into crazing condition, bit of function is centralized to stress since particle of accept rice inorganic right now and make material tenacity and intensity are reduced. Of accept rice particle dispersive, the question is very at present much, professor of Sichuan university yellow acute puts forward solve method to be as follows: (1) wet and abrade, with finishing agent or coupling agent Bao Fu; (2) high speed mix up, 4000 turn / cent speed; (3) ultrasonic oscillation processing; (4) vibration is ground, use the belt is prejudicial piece vibrating motor; (5) old long way is compared, screw of building blocks type, tall cut, with extruder of Xiang Shuang screw; (6) add static blender, muddleheaded mixture device. Of course, also discover the appearance that still many accept rice calcium carbonate reunite here, for example right a few bit of next horn. That is to say, calcium carbonate of rice of this kind of accept, had not overcome completely reunite phenomenon. The accept rice calcium carbonate that estimation still reunites can be occupied 10% the left and right sides, but from goods mechanical function intensity looks, already can satisfy the requirement of all sorts of users. CNC Milling