Shanghai Daoqin Plastics Co., Ltd.

        木塑 composite/compounding material is using/adopting processing material, 森林抚育剩余 material, waste 旧木材, as material and other fiber material (35%~70%) and waste thermoplastic property plastics (main/primary is PE, PP, PVC) is main/primary raw materials, through extrusion, pressure made and other molding methods formed composite/compounding material. composite/compounding material tool has fiber material high strength and high elastic property, also tool has plastics high toughness and resistant fatigue and other advantages, is types 既似木材 also excellent 于木材 new type 代木材 material.

        四 types Common 木塑材 material types type

        （一） polyethylene (PE) 基木塑 composite/compounding material

         extrusion machine in has oxidation material in conditions lower, in LLDPE upper grafting acid and 未处理 木 powder composite/compounding, can made its composite/compounding material. in process in, modified LLDPE crystallization degree decline, 但随 木 powder add crystallization degree also upper rise, composite/compounding material tensile strength, property and creep resistance is grafting acid improve/increase. commonly used compatibilizer has: PP-g-MAH, LLDPE-g-MAH, HDPE-g-MAH, SEBS-g-MAH

        （二） polypropylene (PP) 基木塑 composite/compounding material

         for PP材 material modified process in, use machine filler filling modified PP can improve/increase its tensile strength and flexural strength, 但回导致 its property increase large, tough property decline, performance is fracture elongation, impact strong/high degree separation has different degree reduce, 而以木 fiber as is filling material modified PP, can made force property can relatively good composite/compounding material.

        （三）PVC基木塑 composite/compounding material

        PVC/木 powder composite/compounding material is industrial relatively 早 木塑 composite/compounding material 之一, is currently application most product types. 基于PVC本身不 easy processing features, effect/influence PVC基木塑 composite/compounding material property can factors, heat stabilized agent, processing additives, impact modifier, lubricant, processing process, powder surface treatment and other.

        （四） waste plastics /木 powder composite/compounding material

         use fiber and waste plastics production composite/compounding material, can separation utilizing 丰富 天然资源, can solution waste plastics issues, inner outer as in this 方面做 a large amount of research as. has research, use pp一g一MAH, pp一g一AA is compatibilizer, in PP and PE mixed combined waste plastics in add 入20%-40%木 fiber made composite/compounding material property can, elastic property modulus significantly improve/increase, fracture elongation and impact strong/high degree decline, tensile strength 几乎不变.

         remove above types commonly used made 备木塑 composite/compounding material resin outer, has 科学家 research use PS, ABS and other made 备木塑 composite/compounding material. main/primary for types raw materials versus property research, very good formed 果, industry will is plastics application also large field/area.  

        木塑材 material commonly used additives

        以PVC木塑 composite/compounding material is 例, introduction types commonly used additives

        （1） stabilizer

         according to different applications production different content stabilizer, production use composite/compounding salt stabilizer content most good need low 于30%.

         has machine stabilizer: advantages is heat stabilized property good can used for transparent products, add amount less, low 毒; disadvantages is price high, its is liquid 体, and use has 不便. lubricated property generally, and metal hard acid salt use, remove function outer also can decrease/reduce has machine use amount, reduce cost.

        钙 zinc stabilizer: is 一支无毒 environmental protection new type heat stabilized agent, has liquid and powder types, disadvantages is heat stabilized property relatively 差, add amount large lubricated property good.

        （2） lubricant

         is processing composite/compounding salt stabilizer add lubricant (hard acid, wax, PE wax, oxidation PE wax and other), used for production foaming most good is add oxidation PE wax, has formulation adjustment effect/influence products quality (tool has relatively good lubricated property), use amount processing methods, equipment new 旧, screw large small, stabilizer good bad 定, generally add 4-5%. can used for transparent products, tool has 硫化污染, can and has machine mixed use.

        （3） foaming agent

        木塑 composite/compounding material tool has very more advantages, due to resin and powder composite/compounding, make its property and resistant impact property reduce, material 脆, density ratio 传统木 products large 近2倍, made it use.

        经 foaming rear composite/compounding material due to in good structure, can cracks 尖端并 has retardant cracks expand 张, from significantly improve/increase material impact resistant property can and property, large large reduce products density.

         foaming agent types type very more, commonly used main/primary has types: hot type foaming agent (如 carbon acid hydrogen 钠NaHCO3) and hot type foaming agent (偶 nitrogen 二甲酰 amine AC), its hot separation understanding is different, for polymer melt viscous elastic property and foaming has different effect/influence, need according to products use requirements selection foaming agent.

         generally using/adopting AC foaming agent and small 苏打搭配 use, has use AC foaming agent and carbon acid hydrogen salt 搭配. AC foaming agent advantages is gas amount large, use amount small, disadvantages is separation understanding full, 会残留一 small separation in product 里, this use process in 会影晌 to product table/sheet 观, foaming agent to product surface generate and product weather resistance can accelerated product aging.

        （4） foaming adjustment agent

        木塑 products density different use has 差异, generally in 0.7~0.8kg/cm³ left right, therefore generally use 530就 can to requirements, its molecular weight in 500万 left right, use more polymer/macromolecule amount adjustment agent for foaming is has 帮助, reduce product rigid property. generally use amount is 6-8份.

        （5） coupling agent

         has improve/increase fiber and machine filler versus property, improve/increase product force indicators and reduce products water absorption, use amount large is fiber and filler and 1.5%.

        （6） toughening agent

        建议不 add or less add elastomer toughening agent, elastomer effect/influence products related property can.

        （7） processing additives

        无 specific requirements can add.

        （8） color agent

         in composite/compounding material use process in, powder in can solvent agent material easy to product surface, make product color, most formed color, different product in use ring lower, also generate or 锈斑. therefore, color agent in composite/compounding material production in has relatively is application. it can make products has uniform stability color, color slow.

         suitable for 生态木 color powder generally use 黄, 红, 黑, titanium powder and other. 黄, types color powder has machine and has machine types. machine color powder advantages is in weather resistance and resistant high temperature resistance and other excellent has machine color powder disadvantages is add amount large, for/regarding relatively color suitable, price 便宜. has machine color powder 反之. 生态木 generally use has machine and machine color powder use. titanium powder has R titanium type and titanium type types. R titanium cover/cap force and weather resistance excellent titanium, therefore 生态木 generally use R titanium type titanium powder.

        （9） other additives

        紫 outer stabilizer: 随 人们 for composite/compounding material quality and resistant use property requirements improve/increase to speed development. it can make composite/compounding material in polymer 不发生 degradation or force property can decline. commonly used has retardant amine type light stabilizer and outer absorption agent.

         another, is make composite/compounding material can maintain good appearance and property can, need add anti agent, anti agent selection need 考虑木 powder types type, add amount, composite/compounding material use ring in type, product water amount and other multiple factors. acid zinc can anti 腐但不 can anti type.

        （10） filler and fiber

         filler product types has light carbon acid 钙, heavy carbon acid 钙, active property carbon acid 钙, slip powder, silicon 灰石, high and other; filler has 500目, 800目, 1000目 and 1250目 and other.

         fiber product types has powder has 阔叶木材 powder, 针叶木材 powder, powder, powder, powder, 秸秆, housing/shell and other; for/regarding fiber selection, PVC木塑 fiber generally use 80~120目 left right, PP, PE generally use 60~80目 left right.

         different appearance fiber, machine filler 按一定 ratio/proportion can formed function has improve/increase product force property can. filler and fiber add amount product quality and density, high quality 差, density large, add large screw and tube/pipe abrasion loss, shrink short equipment use lifespan, as 不当, formulation adjustment to more easy make screw fracture.

        本人建议 production PVC生态木100公斤PVC add amount control in 40-70公斤 left right density can control in 0.7-0.8 left right.

        木塑材 material production process

        木 fiber is water property relatively strong/high material, generally water amount in 15%甚至 more high, machine filler to 5% left right, water content high low is effect/influence plastics especially is production stability property and products quality 天敌, foaming rate, products water absorption, products deformation, products weather resistance and other physical properties. therefore water separation most good control in 1%以 inner.

        ☞   process process/workflow （以PVC木塑 processing is 例）

         control good combined water separation fiber and filler →  add high mixed machine 里 →  mixed to 100℃ →  add amount coupling agent →  mixed to 110~115℃ → 关掉马达, 停止时打开 mixed combined machine large cover/cap 2~3 separation 钟 →  add 入PVC and stabilizer →  mixed to 80℃ →  add lubricant and other additives →  to 100℃时 add processing additives, foaming agent → 120~125℃时卸 powder →  powder rear 马达停止 again large cover/cap, 2~3 separation rear again mixed lower material (most good mixed material, one-time mixed combined machine) →  powder in cold 拌桶里 cooling to 40℃ →  pelletizing or add di screw production (cold 拌桶务必 has ring cooling water).

          precautions

        1, in mixed material must attention/notes temperature degree and time, generally cold mixed material in 20-25 separation left right, hot in 12~15 separation left right (temperature degree setting 125℃ left right), if time has versus 差3 separation or more long, can can is temperature has issues or temperature 控不准, or mixed combined machine 牛角刀 abrasion loss heavy, effect/influence foaming rate stability and product color.

        2, 各段风 machine positive 常运转.

        3, machine electrical large small and stability property. machine electrical 流波动 relatively large slip agent, processing additives, fiber and PVC各组 separation between dispersion is very uniform.

        4, dry machine temperature degree generally setting in 60-80℃ between, 且经常 maintain in 桶 容积 80% left right, this has production and color stability, improve/increase products table/sheet quality.

        5, mono screw extrusion machine main/primary scratch material material, mixing/compounding 效果差, powder in machine in time long, easy 烧焦. therefore, in PVC/木塑 composite/compounding material extrusion in to relatively large made. is improve/increase PVC/木塑 mixed combined 效果, used for PVC/木塑 processing mono screw 应该设 mixing/compounding 区, or pelletizing, rear use material extrusion molding, this process consumption additives, reduce PVC property can.