Urea-formaldehyde Resin Txhaj Moulding Parts

Urea-formaldehyde resin (UF), tseem hu ua urea-formaldehyde resin, yog polycondensation ntawm urea thiab formaldehyde nyob rau hauv qhov kev txiav txim ntawm ib tug catalyst (alkaline los yog acid catalyst) los tsim ib tug thawj urea-formaldehyde resin, thiab ces nyob rau hauv qhov kev txiav txim ntawm tus neeg sawv cev kho los yog tus neeg sawv cev pabcuam los tsim ib qho insoluble thiab insoluble theem kawg Thermosetting resin. Cov kho urea-formaldehyde resin yog xim sib dua li phenolic resin, translucent, resistant rau qaug zog acid thiab alkali, muaj kev rwb thaiv tsev zoo, hnav tsis kam, thiab pheej yig. Nws yog hom siv ntau tshaj ntawm cov nplaum, tshwj xeeb tshaj yog nyob rau hauv kev lag luam ntoo. Nyob rau hauv kev tsim ntawm ntau yam ntoo-raws li panels, urea-formaldehyde resin thiab nws cov khoom hloov kho muaj txog li 90 feem pua ​​​​ntawm tag nrho cov nplaum nplaum. Txawm li cas los xij, urea-formaldehyde resin yog yooj yim decomposed nyob rau hauv lub xub ntiag ntawm muaj zog acid thiab muaj zog alkali, thiab muaj tsis zoo huab cua tsis kam, tsis zoo pib viscosity, loj shrinkage, siab brittleness, dej tsis kam, thiab yooj yim aging. Cov ntoo ua vaj huam sib luag tsim nrog urea-formaldehyde resin muaj formaldehyde tso tawm hauv kev tsim khoom thiab siv. teeb meem, yog li nws yuav tsum tau hloov kho.

Cov khoom tseem ceeb ntawm Zhongwei Precision Machinery Co., Ltd. yog cov khoom nylon, cov khoom yas, ABS series, cov khoom siv roj hmab, thiab lwm yam. Cov khoom siv tshuaj molding tuaj yeem ua tiav: polyethylene (PE), polypropylene (PP), nylon (PA). PA6, PA66), polyoxymethylene (POM), ABS, polyurethane (TPU), polyphenylene sulfide (PPS), polystyrene Carbonate (PC), Polyetheretherketone (PEEK), thiab lwm yam.

Khoom Destsab ntawv

1. Cov qauv kev coj ua: lub tuam txhab nruj me ntsis ua raws li ISO9001, ISO14001, IATF16949, VDA6.3 ntawv pov thawj, thiab cov khoom tau dhau ROHS, FDA EU ntawv pov thawj, thiab lwm yam.

2. Cov qauv khoom siv: ISO, GB, ASTM, SAE, EN, DIN, BS, AMS, JIS, ASME, DMS, TOCT, GB

3. Cov txheej txheem tseem ceeb: yas txhaj tshuaj molding, hlau ntxig txhaj tshuaj molding, peev casting, tuag-casting txhuas,

4. Muaj cov ntaub ntawv rau kev txhaj tshuaj molding:

Cov khoom ua tau nylon, cov khoom yas, ABS series; Kev txhaj tshuaj molding cov khoom siv: polyethylene (PE), polypropylene (PP), nylon (PA, PA6, PA66), polyoxymethylene (POM), ABS, polyurethane (TPU), poly Phenyl sulfide (PPS), polycarbonate (PC), polyether ether ketone (PEEK) thiab 3D luam ntawv tuaj yeem hloov kho raws li cov neeg siv khoom xav tau.

Cov yam ntxwv txheej txheem

Urea-formaldehyde resin, tseem hu ua urea-formaldehyde resin, los yog UF luv luv, muaj qhov nruab nrab molecular hnyav li ntawm 10,000. Urea thiab 37 feem pua ​​​​ formaldehyde aqueous kua tuaj yeem ua tau polycondensed nyob rau hauv catalysis ntawm acid los yog alkali kom tau linear urea-formaldehyde oligomers. Industrially, alkali yog siv los ua catalyst kom hnov ​​​​mob ntawm 95 degree, thiab molar ratio ntawm formaldehyde / urea yog 1.5 txog 2.0 los xyuas kom meej tias cov resin kho tau. . Thawj kauj ruam ntawm cov tshuaj tiv thaiv tsim mono- thiab dimethylol urea, thiab tom qab ntawd cov pawg methylol thiab cov amino pawg ntxiv condensed kom tau txais cov khoom soluble. Yog hais tias catalyzed los ntawm ib tug acid, ua rau ib tug gel. Cov khoom tuaj yeem khaws cia hauv qhov nruab nrab. Cov linear urea-formaldehyde resin tuaj yeem kho tau ntawm chav tsev kub thaum ammonium chloride siv los ua tus neeg sawv cev kho. Cov hmoov molding yog rhuab thiab kho ntawm 130-160 degree , thiab accelerators xws li zinc sulfate, trimethyl phosphate, thiab diethyl oxalate tuaj yeem ua kom cov txheej txheem kho. Urea-formaldehyde resin feem ntau yog siv rau hauv kev tsim cov yas molded, cov khoom siv niaj hnub thiab cov khoom siv hluav taws xob, thiab tseem tuaj yeem siv los ua cov ntawv nplaum, cov ntaub so ntswg rau cov ntawv thiab cov ntaub, veneer panels, thiab architectural decorative panels. Vim nws lub teeb xim thiab yooj yim ntawm cov xim, cov khoom yog feem ntau nplua nuj thiab muaj yeeb yuj.

Urea-formaldehyde resin muaj tus nqi qis, lub teeb xim, siab hardness, roj tsis kam, mildew kuj, zoo rwb thaiv tsev thiab kub tsis kam, tab sis tsis zoo huab cua tsis kam thiab dej tsis kam. Nws yog ib qho ntawm cov thermoset resins ua ntej yuav tsim. Xyoo 1924, nws tau tsim los ntawm British Cyanamide Company, thiab cov khoom muag tau muag hauv 1928. Nyob rau nruab nrab -1930s, cov zis tau mus txog 1,000 tons. Hauv xyoo 1980, lub ntiaj teb cov khoom tsim tawm txhua xyoo tau tshaj 1.5Mt.

Tus nqi ntawm urea-formaldehyde resin siv los ua cov khoom yas tsuas yog kwv yees li 10 feem pua ​​​​ntawm tag nrho cov zis. Urea-formaldehyde resin npaj nyob rau hauv cov xwm txheej uas molar ratio ntawm formaldehyde thiab urea yog tsawg, ua ke nrog muab tub lim (pulp, ntoo hmoov), xim, lubricant, curing agent, stabilizer (hexamethylenetetramine, ammonium carbonate), enhancer Plasticizer (urea los yog thiourea. ) thiab lwm yam khoom xyaw yog tov, thiab ces qhuav, pulverized, pob-milled thiab sieved kom tau urea-formaldehyde compression molding hmoov. Qhov kub ntawm nias urea-formaldehyde yas yog 140-150 degree, lub siab yog 25-35MPa, thiab lub sij hawm nias nws txawv raws li thickness ntawm cov khoom, feem ntau 10-60min. Cov khoom siv yas feem ntau yog cov khoom siv hluav taws xob teeb pom kev zoo thiab xov tooj.

Urea-formaldehyde resin feem ntau yog cov dej-soluble resin, uas yooj yim kho. Cov resin kho yog non-toxic, tsis muaj xim, thiab muaj lub teeb pom kev zoo. Nws yuav tsis hloov xim tom qab siv mus ntev, thiab nws yuav tsis hloov xim thaum lub sij hawm thermoforming. Ntau yam xim tuaj yeem ntxiv los npaj ntau yam xim ci. cov khoom.

Urea-formaldehyde resin yog ib qho nyuaj, khawb-resistant, resistant rau qaug zog acids, alkalis thiab roj thiab lwm yam xov xwm. Nws yog pheej yig thiab muaj qee qhov tawv, tab sis nws yooj yim nqus dej, yog li nws cov dej tsis kam thiab cov khoom hluav taws xob tsis zoo, thiab nws cov cua sov tsis zoo.

Khoom Feature

Urea-formaldehyde resin feem ntau yog siv los tsim cov aminoalkyd ci xim nrog alkyd resin los txhim kho hardness thiab dryness ntawm cov xim zaj duab xis. Nws tuaj yeem ua ke nrog cov uas tsis yog ziab alkyd resin los ua cov kua qaub tua cov amino xim rau cov rooj tog ntoo tiav. Txawm li cas los xij, huab cua tsis kam, dej tsis kam thiab gloss retention yog me ntsis zuj zus. Epoxy thiab alkyd resins tuaj yeem siv los tsim cov primers thiab cov xim sab hauv nrog cov khoom sib txawv. Cov yam ntxwv tseem ceeb muaj xws li:

1. Tus nqi pheej yig thiab cov khoom siv raw txaus.

2. Cov qauv molecular ntawm urea-formaldehyde resin muaj cov polar oxygen atoms, yog li nws muaj adhesion zoo rau cov khoom nto. Nws tuaj yeem siv rau hauv primers thiab nruab nrab coatings los txhim kho qhov adhesion ntawm topcoats.

3. Txij li thaum nws tuaj yeem kho tau ntawm chav tsev kub thaum siv cov kua qaub catalyst, nws tuaj yeem siv rau ob qho khoom siv ntoo.

4. Cov xim zaj duab xis kho nrog urea-formaldehyde resin tau yooj yim dua.

5. Urea-formaldehyde resin muaj viscosity ntau dua, cov kua qaub ntau dua thiab tsis zoo cia ruaj khov.

Tshaj tawmTxhaj Moulding txheej txheem

1. Cov khoom siv ua haujlwm: CNC, WEDM, tshuab dhos, milling tshuab, drilling tshuab, grinder, thiab lwm yam;

2. Kev kho deg: Rau qee yam khoom uas yuav tsum tau ua tom qab, peb tuaj yeem muab kev kho mob saum npoo kom ua tiav lub hom phiaj tshwj xeeb ntawm cov neeg siv khoom. Tam sim no, peb tuaj yeem muab degreasing, polishing, electroplating (kub, nyiaj, npib tsib xee, tin, galvanized, thiab lwm yam), anodizing, electrophoresis thiab lwm yam kev kho deg rau precision qhov chaw.

Pwm thiab tshuaj xyuas Fixtures

1. Pwm kev pab cuam lub neej: feem ntau yog semi-permanent. (tsuas yog ua npuas ncauj ploj)

2. Pwm lub sij hawm xa tuaj: 10-25 hnub, (raws li cov qauv khoom thiab cov khoom loj).

3. Tooling thiab pwm tu: Zhongwei yog lub luag hauj lwm rau precision qhov chaw.

Kev Tswj Xyuas Zoo

1. Kev tswj kom zoo: tus nqi tsis zoo yog tsawg dua 0.1 feem pua ​​.

2. Cov qauv thiab kev sim ua haujlwm yuav raug tshuaj xyuas 100 feem pua ​​​​ntawm kev tsim khoom thiab ua ntej xa khoom, kuaj cov qauv rau cov khoom loj raws li ISDO cov qauv lossis cov neeg siv khoom.

3. Cov khoom siv kuaj: automated kev soj ntsuam cov cuab yeej tuaj yeem ua tiav 100 feem pua ​​​​kev tshuaj xyuas cov khoom, spectrum analyzer, golden ntxhw analyzer, peb-coordinate ntsuas tshuab, hardness testing tshuab, tensile kuaj tshuab.