Shanghai Daoqin Plastics Co., Ltd.

plastics impact property can and plastics tough property

in certain plastics in, impact strong/high degree low is very large low 点,例如 PVC, PS, PP and other. especially is PVC property 脆, in light decline understanding, processing temperature degree lower thermal degradation,几乎 formed is types use material. is, in PVC in add modifier, can formed is can 接受 材 material. through in PVC in add a large amount of increase agent can obtain 极广泛 applications. 随 科学 technology development, soft plastics and hard plastics, plastics need 么柔而 soft, need hard 而脆. soft plastics use lifespan short, due to increase agent and material in large gas in aging degradation 而变脆 formed is hard plastics. hard plastics is 缺乏足够 tough property to plastics industrial belt/tape property 威胁, plastics industrial need development new property product. development polymer/macromolecule amount and low amount, or low property increase agent soft and hard plastics products, main/primary is styrene type product development. it development in polymer structure in 引入橡胶组 separation technology new 生. plastics additives development, can improvement plastics production process and improve/increase product property can. its in increase agent, stabilizer, impact modifier is has plastics impact property can improvement. below/following material tough property and rigid property and 反映材 material tough property impact property can testing as 一 叙述.

1. tough property and rigid property tough property and rigid property is for concept. in force in has rigid degree and degree material amount. “ rigid degree ” is material 体发生 mono 位形变时 need force large small;“柔 degree ”则指 material in mono force lower 发生 形变 large small. can 看出, “ rigid degree ”越 large material 体,越不容 easy deformation (performance in elongation very small); “柔 degree ”越 large material 体越容 easy deformation (performance in elongation relatively large). types 理想状态, material rigid degree 趋近于无穷 large (or material force function its deformation small to can 忽略 程 degree), 我们就称该 material is rigid 体. in force analysis 时, can 不考虑 its 自身形变. therefore, rigid property is material 体形变 difficult easy degree property. tough property material comparison soft/flexible, it tensile fracture elongation, impact resistant strong/high degree relatively large; hardness, tensile strength and tensile elastic property modulus versus for relatively small. rigid property material it hardness, tensile strength relatively large; fracture long rate and impact strong/high degree can can low 一; tensile elastic property modulus relatively large. flexural strength reaction material rigid property large small, flexural strength large material rigid property large, 反之则 tough property large. in ASTM D790 bending property can standards experiment/testing methods in 说, this testing methods combined rigid property material 也 适 combined semi rigid property material. it combined tough property material, therefore tough property very large elastomer is testing flexural strength. above tough property and rigid property and testing force property can is versus for. can can 会出现意 outer. use glass fiber reinforced plastics rear, it rigid property large, can can tensile strength and impact strong/high degree increase can can. in impact,震动荷载 function lower,材 material can absorption relatively large can amount generate deformation 而不破 bad property is tough property or impact tough property. construction 钢材(soft 钢), 木材, plastics and other is relatively type tough property material. 路面, 桥梁, 吊车梁 and has resistant requirements structure need 考虑材 material tough property. rigid property and property generally is in 一起. property is outer force to 一定限 degree 时,材 material 发生无先兆 突然破 bad, bad obvious property deformation property 质. property material force property can features is resistant pressure strong/high degree large resistant strong/high degree,破 bad 时 极限应变 value small. 砖, 石材, 陶瓷, 玻璃, mixed 凝土, iron and other is property material. and tough property material versus ratio, it for impact resistant and 承受震动 function is versus 当不利. as is engineering plastics, 我们希望 it meanwhile tool has good tough property and rigid property. in improvement material tough property 时, also method high rigidity. generally add elastomer can increase tough property, add machine filler can increase rigid property. most has methods is will elastomer toughened and filler reinforcement combined 起.

2. plastics impact modifier impact resistant property can is industrial upper certain important plastics property can defect. PVC, PS, PP and other, especially in low temperature impact resistant property can low make its application to made. however in thermoplastic property plastics in, through add “ impact modifier ”就 can large large improve/increase it impact resistant property can.

如 lower 图:

impact strong/high degree: KJ/M2

from upper can PA impact resistant property can most good; its is PC. PP, PVC-HI, PMMA, PS, PA add impact modifier rear, impact resistant property can large large improve/increase. ABS, PA, PC make add resistant modifier impact resistant property can relatively large. its in PMMA and PC is transparent material,PMMA rigid property good,脆;PC tough property good,不脆. modifier PS impact resistant property can relatively 差,我们曾经 is testing add property agent PS product, impact resistant property can improve/increase many. impact modifier product types very more, commonly used has ACR- acrylic ester type resin, MBS- methacrylic acid ester - butadiene - styrene copolymer, CPE- chlorine polyethylene (PE), ABS, EVA, EPT- ternary 乙丙胶 and other. from products modified 效果 看, ACR is comprehensive property can most good type, MBS is transparent products important impact modifier, in full impact modifier market in has important 位.

3. impact modifier for other property can effect/influence impact modifier although can improve/increase impact strong/high degree, for other machine strong/high degree has effect/influence. MBS add PVC in make tensile strength and flexural strength decline. ACR add 入, make HPVC- polymer/macromolecule amount PVC tensile strength, hardness and heat resistant property has decline. CPE add 入, make blending material tensile strength, flexural strength, soft decline. therefore use impact modifier 时, must other property can, comprehensive 考虑. 以确定 combined use amount. is make general purpose plastics engineering 化, in improvement tough property meanwhile,设 method high rigidity. to has introduction, using/adopting PPB(嵌段 polypropylene (PP)) is resin, use POE- polyethylene (PE) 辛烯共 elastomer is toughening agent, HDPE toughened, use MMT- nano grade 蒙脱土 as is reinforcement agent. this can to reinforcement also toughened 目.

4. tensile force 应变曲线 tensile force -应变曲线 from force 应变曲线 upper can 看出脆 property or tough property material, lower 图

曲线 B1 is Common 曲线,屈服 strong/high degree and other tensile strength. to testing 时常出现如此曲线. high toughness material its tensile strength high 于屈服应 force, B is tensile strength high 于屈服应 force, in to supply testing add impact modifier PS material 时, 就出现 曲线 B phenomenon. material ratio PS impact strong/high degree improve/increase many, is high toughness material. in GB/T9341-2000 plastics bending experiment/testing methods in: has tool has property force -应变 features material. its bending property can can as is engineering design based on, non property material bending property can is value. for/regarding property material, difficult as tensile experiment/testing material, most good using/adopting bending experiment/testing.

5. plastics impact resistant property can testing plastics impact resistant property can experiment/testing is in impact negative function lower 测定材 material impact strong/high degree. impact strong/high degree used for evaluation material impact resistant can force or 判断材 material property or tough property degree. therefore impact strong/high degree impact tough property. plastics impact tough property in engineering application upper is important property can indicators, it different material resistant high impact 而致破 bad can force. ISO179 is plastics -简支梁 impact property can 测定 国际 standards. it in 第 1 章 scope/range inner 说: methods used for in impact conditions lower research type type sample property can, meanwhile is in internal solid has made experiment/testing conditions lower assessment sample property or tough property. for/regarding polymer/macromolecule material impact strong/high degree 常常受 to temperature degree, wet degree, impact speed degree, Sample 几何形状以 and force methods and other effect/influence, therefore impact resistant property can experiment/testing is material in experiment/testing methods conditions lower impact tough property, has for material 理意义. in Sample 几何形状 and testing device lower rear, testing temperature degree and wet degree for impact property can has relatively large effect/influence. generally temperature degree high material tough property good, low temperature material 发脆, impact strong/high degree decline. for/regarding wet material, testing wet degree for impact strong/high degree has effect/influence, nylon wet property comparison strong/high, in wet degree large add lower, impact strong/high degree 会 变 large. impact experiment/testing methods very more, based on experiment/testing temperature degree separation: has normal temperature impact, low temperature impact and high temperature impact types, technology in has normal temperature impact; based on Sample 首例状态, can separation is bending impact -简支 梁 and 悬臂梁 impact, tensile impact, impact and impact, has bending impact -简支梁 and 悬臂梁 impact; based on using/adopting can amount and impact 次数, can separation is large can amount one-time impact (简称一 次 impact experiment/testing or impact experiment/testing) and small can amount more impact experiment/testing (简称 more impact experiment/testing). different material or different applications can selection different impact experiment/testing methods. to different 结果, this is can comparison. one-time impact property can experiment/testing to table/sheet 征该材 material solid parameters. in this introduction 简支梁 and 悬臂梁 impact experiment/testing. in impact negative lower 测定材 material impact strong/high degree. used for evaluation material impact resistant can force or 判断材 material property or tough property degree. in engineering application upper is important indicators,反映 different material resistant high speed impact
而至破 bad can force. 简支梁 used for hard plastics; use 简支梁冲不断 材 material, use 悬臂梁 impact especially important. for/regarding full bad Sample report value, use NB table/sheet 示. 无缺口 and has 缺口计算公式 different, front using/adopting Sample wide degree, rear using/adopting Sample 缺口底部 剩余 wide degree. 测 完 full bad and 铰链破 bad value 计算平均 value,部 separation bad value P table/sheet 示.纪录破 bad type type.规定 thick degree small 于 3mm Sample can impact experiment/testing. impact testing effect/influence factors lower: 简支梁: 简支梁 principle: use one-time impact formed water Sample, make bad, impact 线位于支 base/seat positive in 间, impact for 准缺口,以 impact front rear can amount 差确定破 bad absorption can amount. Sample mono 位横截面 积 absorption impact can table/sheet impact strong/high degree (GB). absorption 功/ fracture 面积. 飞出功: impact process generate elastic property deformation, make Sample 飞出.飞出功 and tough property 无关, has 时占消 consumption can amount 40~50%, therefore property small material must 进行修 positive,例如 PMMA. Sample dimensions: thick degree large, impact strong/high degree value high, experiment/testing degree large, impact strong/high degree value high. impact speed degree: for deformation speed degree 敏感 材 material PVC,ABS,PF,UF,摆锤 impact speed degree high impact strong/high degree value reduce, therefore standards in impact speed degree is 2.9m/s or 3.8m/s. for 悬臂梁同样 has effect/influence. temperature degree. wet degree.缺口 semi 径.缺口 processing methods and other factors for impact effect/influence and 悬臂梁 has 共同之处. 悬臂梁: 悬臂梁 principle: use one-time impact solid formed 悬臂梁 Sample,测 amount Sample bad absorption can amount.摆锤 impact and Sample tool and in versus 隔一定距离. data and 截面积 has 关. temperature degree: impact strong/high degree temperature degree reduce reduce,规定 testing temperature degree 23±2℃. processing methods: injection molding relatively machine processing strong/high degree high, front 者 因 shrinkage dimensions 变化,不符 combined standards requirements, selection rear 者. wet degree:吸 wet large material nylon,吸 wet more, impact strong/high degree high, must made testing ring wet degree. Sample 缺口底部 曲 rate semi 径:曲 rate semi small impact strong/high degree value low. Sample force:夹持 force large impact strong/high degree generally low,夹持 force small impact strong/high degree generally high,同一组 Sample maintain same force.

impact experiment/testing testing standards has ISO179 plastics -简支梁 impact property can 测定, ISO 180 plastics -悬臂梁 impact property can 测定, ASTM D256 plastics -悬臂梁 impact property can 测定. ISO standards impact strong/high degree mono is kJ/m2;ASTM standards impact strong/high degree mono is J/m.