Polyurethane (PU) pads yog cov khoom tseem ceeb uas siv dav hauv kev lag luam, kev kho mob, thiab kev siv hauv tsev. Kev tswj xyuas zoo ntawm PU pads ncaj qha cuam tshuam rau cov khoom lag luam kev nyab xeeb, ua haujlwm ntev, thiab cov neeg siv kev paub. Kev ua tiav qib siab - zoo PU ncoo ntau lawm yuav tsum tau ua tib zoo tswj thoob plaws hauv tag nrho cov txheej txheem, los ntawm kev xaiv cov khoom siv raw thiab cov cuab yeej tsim khoom kom tiav cov khoom tiav.
Kev tswj cov khoom raw yog lub hauv paus ntawm qhov zoo. Qhov kev ua tau zoo ntawm PU pads feem ntau nyob ntawm qhov purity thiab proportions ntawm cov khoom siv raw xws li polyols thiab isocyanates. Cov neeg tsim khoom yuav tsum nruj me ntsis tshuaj xyuas cov neeg muag khoom kom ntseeg tau tias cov khoom siv raw ua tau raws li cov qauv kev lag luam. Piv txwv li, tus nqi hydroxyl sib txawv ntawm polyether polyols yuav tsum tau tswj tsis pub dhau ± 2%. Ib txhij, tus nqi ntawm cov khoom ntxiv xws li catalysts thiab foaming agents yuav tsum tau txheeb xyuas los ntawm kev sim cov ntaub ntawv kom tsis txhob muaj cov qauv ntawm tes tsis sib xws lossis cov khoom siv tsis zoo vim yog cov khoom siv raw khoom sib txawv.
Lub precision ntawm cov txheej txheem ntau lawm txiav txim cov khoom sib xws. In the foaming stage, slight differences in temperature, pressure, and mixing ratios can cause density gradients or abnormal open-cell ratios. Siv cov txheej txheem tswj qhov kub thiab txias thiab tiag- lub sijhawm ntsuas ntsuas cov cuab yeej tuaj yeem txo qhov kev hloov pauv ntawm cov khoom ua npuas dej mus rau ± 0.5℃thiab ± 0.1 bar. Thaum lub sij hawm molding, lub sij hawm demolding thiab txias npaum li cas yuav tsum tau saib xyuas kom zoo kom tsis txhob muaj qhov sib txawv ntawm qhov sib txawv los ntawm ntau qhov shrinkage. Rau kev kho mob- qib PU lev, kev tswj chav huv thiab kev tshem tawm cov tshuab electrostatic kuj tseem tsim nyog los tiv thaiv kev sib kis.
Ib qho kev sim ntau- qhov ntsuas qhov ntsuas kom paub meej qhov kawg- khoom ntseeg tau. Finished products must undergo density testing (error<=±3kg/m³), tensile strength testing (>=1.5MPa), and abrasion resistance cycling testing (thickness loss<2% after 50,000 abrasion cycles). For special-purpose products, such as antibacterial PU mats, the antibacterial rate must be verified according to ISO 22196 standards, while flame-retardant products must meet the UL94 V-0 flammability test. It is recommended that companies establish an SPC (Statistical Process Control) system to dynamically analyze key quality characteristics through X-R control charts, achieving defect prevention rather than post-screening.
Kev txhim kho tsis tu ncua ua rau kev txhim kho zoo. Tsis tu ncua sau cov ntaub ntawv tawm tswv yim rau cov neeg siv khoom thiab siv Six Sigma txoj hauv kev los txheeb xyuas cov teeb meem zoo ib yam, xws li ntug tawg lossis elasticity lwj, thiab ua kom zoo dua cov qauv lossis txhim kho cov qauv pwm kom haum. Nyob rau tib lub sijhawm, kev ntsuas kev laus nrawm yog siv los kwv yees lub sijhawm ntev - kev ua tau zoo ntawm cov khoom, txuas ntxiv kev tswj kom zoo rau tag nrho cov khoom lag luam lifecycle.
Kev tswj xyuas zoo ntawm PU pads yog ib txoj haujlwm zoo. Tsuas yog los ntawm kev sib txuas cov kev sim kev tshawb fawb, kev tsim khoom thiab cov ntaub ntawv- tsav kev txiav txim siab- ua kom muaj kev sib npaug ntawm kev ua haujlwm ruaj khov thiab tus nqi- kev ua tau zoo, thaum kawg ua tau raws li kev lag luam xav tau rau siab - cov khoom zoo polyurethane.
