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http://indianaquariumhobbyist.com/community/ :: View topic - WPC waterproof
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WPC waterproof

 
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PostPosted: Thu Sep 01, 2016 5:35 pm Post subject: WPC waterproof Reply with quote

 WPC  waterproof  mildew  and  other  characteristics,  the  performance  for  the  same  product  is  good,  but  in  order  to  become  the  industry  leader  that's  not  enough,  you  need  to  go  to  the  various  properties  of  WPC  to  increase  most  for  how  to  waterproof  mildew  improve  its  performance,  the  following  describes  some  ways.
 Precautions  Because  WPC  wood-plastic  composite  materials  are  used  almost  exclusively  outdoor  environment  (climate  change  challenge  requires  long-term  experience  sun,  rain  and  frozen),  so  the  researchers  conducted  the  product  development  process,  always  consider  the  product  to  adapt  to  the  harshest  weather  conditions,  especially  in  the  life  of  the  product,  the  product  does  not  appear  to  ensure  that  climate  change  caused  by  quality  problems.  WPC  product  is  a  material  of  a  hygroscopic,  sawdust,  and  hydrophobic  materials,  plastics,  and  various  types  of  pigments  and  additives  are  mixed  together  material  from  the  complex.  In  the  WPC  industry  standard.  Wood  is  the  addition  ratio  of  the  filler  is  usually  40  to  60%.  Such  products  can  increase  stiffness  and  creep  resistance.  Wood  filler  price  of  approximately  $  0.10  /  lb,  but  from  the  overall  production  considerations,  WPC  comparison  to  all  plastic  products  to  reduce  production  costs.  Type  of  wood,  hardwood  or  cork,  can  ultimately  affect  the  weatherability  of  WPC  products,  each  polymer  degradation  has  its  own  characteristics.  WPC  75%  is  made  of  polyethylene  (PE).  A  small  but  is  the  future  trend  of  manufacturers  use  polypropylene  (PP)  and  polyvinyl  chloride  (PVC)  instead  of  the  original  polyethylene  raw  materials,  such  products  are  more  durable  and  more  difficult  to  process.  But  there  are  also  disadvantages,  polypropylene,  polyethylene  and  polyvinyl  chloride  easier  than  the  surface  being  oxidized.
 WPC  studies  Species
 Morrell  said  "WPC  product  moisture  performance  is  very  good,  especially  compared  to  wood.  But  over  time,  the  moisture  resistance  will  be  discounted."  She  currently  ongoing  commercial  laboratory  water  cycle  WPC  boards,  wet  /  dry,  cycle.  The  boards  were  manufactured  by  Strandex  company.  The  boards  were  composed  of  60%  wood  chips,  40%  of  high-density  polyethylene  (HDPE)  composition.  The  results  showed  that,  after  each  cycle  of  water,  the  water  content  of  the  sheet  will  have  a  certain  degree  of  increase.  After  four  cycles  after  its  water  content  has  reached  2.6%.  The  results  showed  that,  after  experiencing  water  cycle  test,  void  volume  between  wood  and  plastic  increased.
 "Constitutes  WPC  products  is  very  complex  ?"  Atlas  Material  Testing  Technology  LLC  senior  adviser  AllenZeilnik  said,  "and  bio-polymer  fiber  has  its  own  separate  mechanisms  of  degradation,"  "due  to  degradation  in  the  composite  polymer  surface,  the  fiber  is  located  at  both  ends,  so  the  moisture  can  be  absorbed  deep  into  the  interior  through  the  surface  of  the  material.  "he  explains.  Like  a  leaky  faucet  this  problem  continues  to  worsen  over  time.  Since  the  fibers  absorb  moisture  and  sustained  expansion,  leaving  voids  after  drying.  This  will  lead  to  more  complex  materials  inside  the  product  to  absorb  moisture,  so  a  vicious  cycle.  These  voids,  while  providing  a  very  useful  environment  for  the  growth  of  microorganisms,  fungi  and  molds.  "I  even  saw  the  WPC  product  grow  mushrooms."  Zelinik  said.
 AEWC  Advanced  Composite  Structures  Center  University  of  Maine,  a  professor  of  wood  science  and  technology  research  Douglas  Gardner  believes,  WPC  products  mildew  situation  is  not  only  determined  by  the  production  principle,  but  also,  and  location,  that  is  related  to  the  work  environment.  For  example,  WPC  panel  products  in  Florida  a  few  years  after  installation,  the  surface  of  the  red  fungi.  This  means  that  the  wood  is  still  susceptible  to  biological  degradation.  Other  tropical,  humid  environments  also  reported  a  similar  situation,  such  as  Hawaii.
 Since  the  passage  of  moisture  is  absorbed  into  the  wood  fibers  inside  the  composite  material,  the  simplest  way  is  to  reduce  the  amount  of  wood  filler.  Gardner  said  that  many  commercial  plate  production  by  adding  60%  to  65%  of  the  wood  filler.  "Sometimes  even  too  much  ?  wood  raw  material  producers  added."  He  said.
 Another  product  to  prevent  mildew  WPC  ways  to  use  other  types  of  wood  in  the  production  process.  Morrell  said  the  test  showed  that  there  is  a  fungus,  white-rot  fungus,  more  like  wood.  The  hardwood  is  WPC  products  are  a  major  source  of  wood  flour.  Workaround  You  can  use  western  red  cedar  wood  as  a  substitute.  Because  Western  red  cedar  is  a  cork,  cut  with  a  high  degree  of  corrosion  resistance.  Some  researchers  say,  adding  biocides  into  WPC  products,  such  as  zinc  borate.  Although  boric  acid  can  be  very  good  control  of  fungal  growth,  but  not  an  effective  mildew.
 For  waterproof  mildew  treatment  WPC  we  have  to  do  a  lot,  just  above  describes  a  study  of  a  researcher  and  his  team,  I  believe  in  the  near  future  there  will  be  more  outstanding  performance  of  WPC  market
 
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