Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Poor EMA chemical resistance

Material Analysis EMA chemical resistance chemical attack slight crosslinking surface coating

Strong EMA processing odor

Material Analysis EMA processing odor volatiles ventilation and exhaust temperature control

EMA internal shrinkage voids

Molds & Tooling EMA shrinkage voids thick wall holding pressure time gate freezing

Large EMA creep deformation

Large creep is caused by elastomer nature; slight crosslinking and rigid filler are key

Material Analysis EMA creep slight crosslinking high molecular weight rigid filler

Insufficient EMA transparency

EMA transparency is affected by MMA content and crystallization scattering

Extrusion & Post EMA film transparency haze MMA content nucleating agent

Poor EMA antistatic effect

Molding Process EMA antistatic antistatic agent surface resistance migration rate

EMA processing temperature fluctuation

Material Analysis EMA temperature fluctuation PID tuning heater band thermocouple

Insufficient EMA tensile strength

Material Analysis EMA tensile strength molecular weight coupling agent orientation control

EMA screw slippage

Screw slippage is caused by premature melting; lowering feed section temperature is key

Extrusion & Post EMA screw slippage feed section temperature premature melting flight deepening

Large EMA dimensional change with temperature

Extrusion & Post EMA dimensional temperature sensitivity thermal expansion coefficient rigid filler annealing treatment

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