Shanghai Daoqin Plastics Co., Ltd.

我们 in research 一 材 material 时, attention/notes issues is: material structure 决定材 material property can, material property can 反映材 material structure. in molding polycarbonate (PC) 时, separation by orientation, is due to polycarbonate (PC) separation upper tool has ring, therefore understanding orientation comparison difficult, in molding rear, by orientation has 恢复自然状态 trend, is due to separation already by and large separation between versus left right, from formed products in 残留应 force, residual stress in, formed product can can 出现应 force cracking, attention/notes, this is can can, is what is can can 呢? this is is polycarbonate (PC) internal also in very more force, its in comparison important is: resistant cracking force, this force large small separation long short, 链间 缠结数目, separation between function force. resistant cracking can force and internal stress balanced 时, product 不会出现 cracking phenomenon, resistant cracking can force small internal stress 时, 就会出现: is what product molding also good good, 而存放一段 time rear cracking? difficult is upper 天 魔 method? its is method, is internal stress and resistant cracking force function 结果, good, will this simple 话: separation upper ring —— molding orientation —— products molding rear internal stress ——当 internal stress and resistant cracking can force balanced —— good products ——当 internal stress large resistant cracking can force —— product cracking. this issues, large 家都不愿意看见, 我们不 can issues supply 商麻烦吧, is supply 商共同 solution issues, for, has this 样 态 degree good, in 我们共同 discussion how to solution issues, 我们先 from process upper solution 吧: 首先, 我们看看 injection molding parts mold temperature degree. from upper that difficult 懂 理论我们知道, internal stress is is molding separation by 冻结引起, molding 吗, is use injection molding parts mold molding, 我想你 large already to, for, injection molding parts mold temperature degree for and separation understanding orientation has very large effect/influence, very obvious 吗, injection molding parts mold temperature degree high, separation 子链肯定容 easy 运动吗, 就如同 water separation in 100 degree 时会“飞” 道理（烧开 water bubbles 吗, 经常做家务哦）, therefore, improve/increase injection molding parts mold temperature degree, not only for has 利, and adjustment products cooling speed degree, make its more uniform, from has polycarbonate (PC) in orientation separation 子 松弛, is understanding orientation. semi 天, to injection molding parts mold temperature degree in how much combined 适呢? need 急, injection molding parts mold temperature degree false can control, in 100—120 degree is molding polycarbonate (PC) most temperature degree. has 朋友按我说 做, high 兴 告诉我, 你 确 is expert, product in cracking less more, is is injection molding parts mold temperature degree high, product easy deformation, molding cycle long, production rate low. do you know, time is 生命, time is 金钱, 你赔我钱, very 显然, this inquiry active formed 功, upper 回 看书, true positive expert, is has lower 面 建议. its 次, molding conditions. in molding 里面, expert 都知道: molding temperature degree, molding pressure, molding speed degree, holding pressure time, holding pressure pressure. 我们应该 comprehensive this factors, molding conditions, 我们知道, polycarbonate (PC) processing temperature degree is comparison high, molding pressure is comparison large, molding speed degree is comparison fast, what to do 呢? upper 面 理论, for, molding temperature degree micro improve/increase 一, will molding pressure decrease small 一, molding speed degree decrease small 一, holding pressure time less 一, holding pressure pressure small 一, need small this “一 ”, false can to this 几步, product waste product rate less very more. has also 说, this more 一, 头疼啊, also has what method, fast full 部告诉我, this, this, good 说 莫名 its 妙 东西, is to 你们逼迫 啊. again 次, 退火处理. 谓退火处理 is will products to hot in 静置一定 time, temperature degree generally ratio polycarbonate (PC) heat deflection temperature (HDT) low 10—20 degree, 处理效果 most good, false temperature degree high, products easy warpage, deformation. if temperature degree low, 处理效果 also to 啊, time 吗, generally is 1—10 small 时, time long short, 取决于 products thick thin, rear, slow cold to room temperature, need is fast, internal stress also generate, therefore internal stress is 无处不 in 啊. 朋友们 has 说, this more 麻烦, has has more simple method? 我一听就头 large, more good method? more good method is material, do you know, most 不愿意换 material, is, has what method 呢? 首先, molecular weight high polycarbonate (PC). polymer/macromolecule amount polycarbonate (PC) separation long degree more long, 链间缠结数目 more more, separation function force more large, therefore, resistant cracking can force more strong/high, therefore, can for resistant internal stress 吗, 你看, 球人都知道, use 赵忠祥 话说: molecular weight also is “ high ” good. its 次, formed alloy. most Common is PC/PE alloy, PC/ABS alloy, also has 一, is this, this, also is 自己 琢 abrasion 吧. this lower, 各位兄弟朋友们, 你该满意 吧? false also 不满意, 我也没 has method 啊, 欲哭无泪ING, fast 做实验, can help you to more good method, is, currently this method is can 行.