A kind of formulation of extrusion forming wood-plastic foaming decoration section bar and preparation method
Technical field
The present invention relates to a kind of prescription and preparation method of decoration bar section, relate in particular to a kind of formulation of extrusion forming wood-plastic foaming decoration section bar and preparation method.
Background technology
Along with reform and opening-up, people's lives are further improved, and the demand of the fast development of building decoration market, particularly decoration bar section is increasing, comprise door, frame and all kinds of lines.These decoration bar sections all adopted the high-quality natural timber to process in the past, and there are many problems in timber, and at first, timber is a kind of Nonrenewable resources, utilized timber to make decoration bar section, were subjected to resource limit; Secondly, utilize timber to do the restriction that decoration bar section is subjected to raw material length, wooden the original length may not satisfy the needs of some decoration bar section; 3. because wooden natural characteristic may exist joint, hole, hole and aberration etc. in the middle of the wood, wooden above-mentioned defective can influence the outward appearance and the quality of its goods; 4. former woodwork also exists yielding, and damaged by worms easily and corroded, and the shortcoming of water-repellancy difference, also can influence the decoration bar section of making by timber; 5. wooden product generally need painting, and are more loaded down with trivial details on technology.
In order to overcome the many shortcomings that are processed as decoration bar section with natural timber,, also there is the technology of making decoration bar section of wood plastic composite in the prior art also in order to protect the so non-renewable resource of timber.Have as now having retrieved close patent: its purposes of a kind of modified composite material of woods and plastics and manufacture method, its Chinese number of patent application are that 02104432.5 publication number is CN1445285A; A kind of wood plastic composite and its production and application, its Chinese number of patent application are that 02160123.2 publication number is CN1513918A.But above-mentioned two kinds of prior arts are mentioned very few at the prescription and the preparation method of extrusion forming wood-plastic (PVC) foaming decoration section bar.
Summary of the invention
Technical problem to be solved by this invention provides a kind of formulation of extrusion forming wood-plastic foaming decoration section bar and preparation method, the composition of raw materials of extrusion forming wood-plastic foaming decoration section bar is proposed, adopt this kind prescription to produce decoration bar section, and this preparing raw material technology is provided with the method for extrusion moulding.
For solving the problems of the technologies described above, a kind of formulation of extrusion forming wood-plastic foaming decoration section bar of the present invention, comprise part plastics of 100,50% wood powder, additive, described additive comprise 6% one package stabilizer, 0.6% external lubricant, 1.2% internal lubricant, 6% anti-impact modifier, 2% processing aid, 2% tackifier, 5% foaming control agent, 0.8% whipping agent, 6% light calcium carbonate CaCo
3, 0.5% blowing promotor, 1% ageing-resistant dose, the pigment powder of 0.1%-1%.
A kind of formulation of extrusion forming wood-plastic foaming decoration section bar of optimal technical scheme of the present invention, external lubricant wherein are that Ployethylene Wax, internal lubricant are that stearic acid, anti-impact modifier are that CPE, processing aid are that ACR, tackifier are that dioctyl phthalate (DOP), blowing promotor are that Zinic stearas, ageing-resistant dose are titanium dioxide.
The preparation method of a kind of formulation of extrusion forming wood-plastic foaming decoration section bar of the present invention may further comprise the steps: the first step, wood powder are selected to handle with modification; In second step, wood powder and plastics are mixed.
The preparation method of a kind of formulation of extrusion forming wood-plastic foaming decoration section bar of optimal technical scheme of the present invention, wherein the first step wood powder is selected to may further comprise the steps with the modification processing: the first step, 25 parts of dry backs are poured in the mixing machine wood powder; Second step, with 6 parts of light calcium carbonates, 1 part of titanium dioxide, 0.8 part of stearic acid, an amount of pigment powder and 1 part of dioctyl phthalate (DOP) are poured in the high-speed mixer; In the 3rd step, 25 parts of dry wood powders are poured in the high-speed mixer; In the 4th step, carry out high-speed mixing to 120 ℃ with pouring high-speed mixer in the 3rd step; In the 5th step, it is standby to pour the miscellany that obtains in the 4th step into the low speed cold mixer.
The preparation method of a kind of formulation of extrusion forming wood-plastic foaming decoration section bar of optimal technical scheme of the present invention, wherein the second step wood powder and plastics mix and may further comprise the steps: the first step, 50 parts of PVC are poured in the high-speed mixer; In second step, with 6 parts of CPE, 2 parts of ACR, 1 part of dioctyl phthalate (DOP), 6 parts of one package stabilizers, 0.6 part of Ployethylene Wax, 0.6 part of stearic acid, 5 parts of foaming control agents, 0.8 part of whipping agent, 0.5 part of Zinic stearas are poured in the high-speed mixer; In the 3rd step, 50 parts of PVC pour high-speed mixer into, carry out high-speed mixing to 120 ℃; The 4th step was poured into the mixture that obtains in the 3rd step in the low speed mixer of standby modified wood powder and mixes, and was cooled to below 50 ℃.
The present invention utilizes wood powder and plastics can be used for making decoration bar section as the prescription of making extrusion forming wood-plastic foaming decoration section bar.Utilizing the present invention to make decoration bar section can be unrestricted on length, does not have the aberration problem.And have good antiseptic property, can save a large amount of timber again.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 is the wood-plastic foaming decoration section bar of the present invention form of filling a prescription in detail.
Embodiment
In a kind of formulation of extrusion forming wood-plastic foaming decoration section bar of the present invention, comprise plastics, wood powder and additive.Additive wherein comprises one package stabilizer, external lubricant, internal lubricant, is anti-impact modifier, processing aid, tackifier, foaming control agent, whipping agent, light calcium carbonate CaCo
3, blowing promotor, ageing-resistant dose, pigment powder.External lubricant wherein is that Ployethylene Wax, internal lubricant are that stearic acid, anti-impact modifier are that CPE, processing aid are that ACR, tackifier are that dioctyl phthalate (DOP), blowing promotor are that Zinic stearas, ageing-resistant dose are titanium dioxide.
Fig. 1 is the wood-plastic foaming decoration section bar of the present invention form of filling a prescription in detail, as shown in Figure 1, wherein wood powder is 100~150 orders, the wood powder proportion is 50%, the one package stabilizer proportion is 6%, and the external lubricant proportion is 0.6%, and the internal lubricant proportion is 1.2%, the anti-impact modifier proportion is 6%, the processing aid proportion is 2%, and the tackifier proportion is 2%, and the foaming control agent proportion is 5%, bag infusion proportion is 0.8%, the light calcium carbonate proportion is 6%, and the Zinic stearas proportion is 0.5%, and the titanium dioxide proportion is 1%, PVC-7 type resin is 100 parts, and pigment powder proportion is for being 0.1%-1%.
In making processes, at first select for use selected at 100~150% wood powder, before modification is handled again, the wood powder water content is poured 25 parts of dry backs in the mixing machine into to wood powder earlier, again with 6 parts of light calcium carbonates less than 3%, 1 part of titanium dioxide, 0.8 part stearic acid, and an amount of pigment powder and 1 part of dioctyl phthalate (DOP) pour in the high-speed mixer, last 25 parts of dry wood powders are poured into.High-speed mixing to 120 ℃, mixing time is about 10 minutes.It is standby to pour said mixture into the low speed cold mixer.When wood being moulded mixing, 50 parts of PVC are poured in the high-speed mixer, again with 6 parts of CPE, 2 parts of ACR, 1 part of dioctyl phthalate (DOP), 6 parts of one package stabilizers, 0.6 part of Ployethylene Wax, 0.6 part of stearic acid, 5 parts of foaming control agents, 0.8 part whipping agent, 0.5 part of Zinic stearas are poured into, then pour 50 parts of PVC into high-speed mixer again, high-speed mixing to 120 ℃, the time is about 8~10 minutes.Be poured into again in the low speed mixer of standby modified wood powder and mix.Be cooled to 50 ℃ with bottom discharge.