Shanghai Daoqin Plastics Co., Ltd.

silicon oxygen mold demolding agent product types 繁复, and property 质, applications 各异, how selection mold demolding agent, dry most good function? generally 说, mold raw materials, structure and 形状, demolding formed product product types, use temperature degree, rear processing property （印 coating property, property ）以 and dilute agent and other is has necessary conditions. need, metal mold temperature degree is selection mold demolding agent need 本源, hot from safety degree （ 火 and in 毒）看, can use solvent liquid type, selection emulsion type, silicon type or silicon type mold demolding agent. silicon for various and plastics 均无膨胀 and shrinkage function, therefore outer used as it mold demolding agent, can is silicon or more or less need to by molding formed product outer table/sheet, effect/influence it rear processing properties. 例如, in molding ring oxygen resin, polyurethane ester resin and polyurethane ester 橡胶时, most good use solid type mold demolding agent or and solid type mold demolding agent mixed use. for demand bonding, coating and pressure molding product, can use 二甲基 silicon made as mold demolding agent. false use long 链烷基 silicon as mold demolding agent, can remove this drawbacks. dilute agent, has machine solvent agent, agent and water, 均不 残留 in mold upper. will make formed quality quality decline. dilute agent selection 不妥, can make mold outer table/sheet silicon dispersion 布不均, rear make formed product 出现应 force cracking and add fast aging and other 疑问.
in plastics molding processing in use   silicon oxygen mold demolding agent already in 模塑, and method made plastics, 橡胶, polymer, metal, 玻璃, and material in use. plastics molding processing silicon oxygen mold demolding agent most important use target/goal. in polyurethane ester, polystyrene (PS), polyvinyl chloride (PVC), poly amine, acrylic resin, ring oxygen resin and polyester and other pressure molding, molding, molding, molding, lamination molding and other technology in in use. its 间, polyurethane ester foam plastics molding demolding large more 数, generally use is concentrated degree is 0.5% ~ 2.0% solvent liquid or emulsion type mold demolding agent, will its spray coating in mold upper, in molding processing temperature degree lower dry 30min, can 取 杰出 demolding property.

         above introduction is as is outer mold demolding agent use 状况. this year, as is inner mold demolding agent use very fast, method is will silicon 油直接参 add thermoplastic property resin in or front made formed high concentrated degree silicon thermoplastic property resin material, rear again mixed 入母猜 in use. 例如, in polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) （ABS）, polyolefin, nylon, polyoxymethylene (POM) and polyvinyl chloride (PVC) in add a small amount of silicon or silicon material, in extrusion molding in can flow property and resin amount. in molding 时, can shrink short screw 回复时刻, resin flow property, decline formed product outer table/sheet friction coefficient, formed product wear resistance, lubricated property, gloss property and hydrophobic water property. use 二甲基 silicon 油时, 则以黏 degree relatively high is good; add 甲基苯基 silicon 油时, can adjustment rate, transparent formed product; add polyether silicon 油时, can anti-static property, make film formed product tool has anti combined property; add long 链烷基 silicon 油时, to formed product tool has can printing, coating and pressure and other rear processing property. in thermoplastic property resin in more can active property MQ silicon resin, 含羟基 silicon and hard acid and other, also can formed product flame retardant property.

in housing/shell 模（铸 type ） and machine processing in use   silicon oxygen mold demolding agent tool has heat stabilized property, high temperature lower separation 化, therefore used for made as housing/shell and various metal parts 体. made as housing/shell 模时, more use emulsion type or solvent liquid type mold demolding agent, can will mold demolding agent spray coating in 由砂子 and aldehyde resin made formed add hot to 250℃ lower housing/shell upper, again add hot inner 处理数 separation 钟; can will mold demolding agent spray coating in upper, again used for made housing/shell 模. due to use mold demolding agent, from and metal demolding non easy, to housing/shell can 够不另行 processing, therefore can to fine parts. in low melting point metal zinc, and its alloy and other fine in, high temperature resistance silicon mold demolding agent can to function, use mold demolding agent concentrated degree 以1% ~ 5%(quality separation 数） is good, can to low cost and function 佳 意图. about/regarding degree use new 模, must high temperature or use solvent agent, alkali liquid or abrasion and other, remove in housing/shell outer table/sheet upper has machine material and oxidation material. rear again use relatively high concentrated degree silicon emulsion or silicon solvent liquid 处理, can 投入运 use.