CN103992592B - Secondary stock Wood-plastic material and preparation method thereof - Google Patents
Secondary stock Wood-plastic material and preparation method thereof Download PDFInfo
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- CN103992592B CN103992592B CN201410181776.8A CN201410181776A CN103992592B CN 103992592 B CN103992592 B CN 103992592B CN 201410181776 A CN201410181776 A CN 201410181776A CN 103992592 B CN103992592 B CN 103992592B
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Abstract
The present invention relates to a kind of wood plastic composite utilizing paper grade (stock) secondary stock to prepare and preparation method thereof.Compared with existing wood plastic composite, secondary stock wood plastic composite of the present invention makes full use of papermaking material secondary stock to produce wood plastic composite, can not only play and carry out waste material recycling well, and be conducive to environmental protection; Secondary stock wood plastic composite of the present invention is easy to processing in addition, its processing length is unrestricted, and production efficiency is high, excellent property (zero formaldehyde, waterproof, protection against the tide, mildew-resistant, mothproof), the desired decoration material replacing common density board, multi-layered board in the future, use after the several years, can 100% recycling; And production technique is simple, easy handling, good stability.
Description
Technical field
The present invention relates to Wood-plastic material field, specifically, relate to a kind of Wood-plastic material utilizing the secondary stock of paper grade (stock) to prepare and preparation method thereof.
Background technology
Along with the raising of people's environmental protection and energy saving consciousness, be no longer satisfied with timber waste and the high Form aldehyde release of consolidated floor of solid wooden floor board, in the urgent need to a kind of there is energy-conservation, low cost, be easy to the novel material of construction arranged.Wood plastic composite is the material that a kind of wood powder, xylon or vegetable fibre filling thermoplastic polymer is made through high temperature high pressure process, have the advantage of timber and plastics concurrently, its main raw material is agriculture and forestry organic waste material (as waste wood, farm crop rice straw etc.) and thermoplastics.Agricultural crop straw is as the by product of agriculture production, and output is large, distribution is wide, according to statistics annual about 8 ~ 1,000,000,000 tons of current China agricultural crop straw generation.For a long time, both at home and abroad the comprehensive utilization of agricultural crop straw is conducted extensive research, obtain some available approach, wherein important one is exactly by wood fibre and plastic blend, prepare matrix material, as by cotton field waste and the mixing of discarded mulch film, add suitable additive and make wood-plastic floor board; Stalk or Pericarppium arachidis hypogaeae are mixed with PVC, PP or PE, High Temperature High Pressure prepares Wood-plastic material.The Application and Development of Wood-plastic material is conducive to protecting forest resources, and slows down waste wood and plastics to the pollution of environment, makes full use of the natural resources.
For paper industry, waste paper be a kind of very important can reuse resource, reclaim paper using be exactly current people be directed to this type of can reuse resource and a term proposing.Because raw material is easy to get, and technological process is simple, the more important thing is and not only economizes on resources but also protection of the environment.Therefore, good economic benefit and social benefit can be obtained.Paper pulp prepared by this recovery paper using is referred to as recycled fiber or secondary stock.For the country lacking fibrous material, secondary stock is utilized to have important economic implications.Cellulosic content in secondary stock is very high, is applicable to very much preparing Wood-plastic material.
Based on above-mentioned requirements, the invention provides a kind of wood plastic composite utilizing secondary stock to prepare and preparation method thereof.
Summary of the invention
The object of the present invention is to provide a kind of wood plastic composite utilizing secondary stock to prepare and preparation method thereof, secondary stock wood plastic composite good physical properties prepared by the present invention, waterproof, protection against the tide, mildew-resistant, be easy to processing, and the secondary stock that can make full use of in waste sludge from paper mill, save timber resources simultaneously.
Secondary stock wood plastic composite of the present invention is made up of the raw material of following parts by weight:
PVC resin powder: 100 parts;
Secondary stock powder: 20 ~ 50 parts;
Calcareous weighting agent: 20 ~ 50 parts;
Stablizer: 1 ~ 5 part;
PE wax: 0.5 ~ 1.5 part;
Stearic acid: 0.5 ~ 1.5 part;
Foaming control agent: 3 ~ 10 parts;
Whipping agent: 0.1 ~ 2 part.
Wherein, the versatility PVC resin powder that described PVC resin powder can select this area conventional, i.e. the loose type resin of suspension method production, be commonly called as SG resin, its tissue looseness, surface shape is irregular, and section conveying porous is netted.Therefore, SG type Resin Absorbent softening agent is fast, and plasticizing rate is fast.General granularity is 10 ~ 400 μm, preferably close with wood fibre Powder Particle Size 20 ~ 200 μm.
Wherein, the secondary stock powder that described secondary stock powder can select field of papermaking conventional, the pulp dryer powder process of the secondary stock that paper industry is commonly used.Particularly can select the secondary stock powder made by waste paper utilization steam explosion; In general, the method that described steam explosion prepares secondary stock powder sends in steam explosion device by after various waste paper pulp, plug-like material is compressed into by reciprocating piston, this plug shaped article sends into autoclave continuously, make its temperature reach more than 230 DEG C through steam treatment, pressure reaches 1-3 normal atmosphere, process 0.5-10min, then material is sprayed by a spray valve, make Pressure Drop to normality.After being launch aed surprise attack by saturation steam, the ink particle that waste paper has resolved into fiber and can wash away.Then with crystalline substance China, screen, the coordinative composition of equipments such as washing obtains secondary stock paper pulp, then by pulp dryer powder process.The granularity of powder is preferably 50 ~ 80 orders.
Described calcareous weighting agent can select calcium carbonate.In Wood-plastic material, add appropriate weighting agent, can make it have good feel, light face is dry and do not show light, and resistance to hot pressing is high, and permanentset is little.Preferred light calcium carbonate powder or slight activated calcium carbonate.The calcium carbonate of described light calcium carbonate to be settling volume be 2.4-2.8mL/g, generally that the raw material calcinings such as Wingdale are generated lime (main component is calcium oxide) and carbonic acid gas, the digestion lime that adds water again generates milk of lime (main component is calcium hydroxide), and then pass into carbonic acid gas carbonization milk of lime generation precipitation of calcium carbonate, obtain finally by dehydration, drying and pulverizing; Or first carry out replacement(metathesis)reaction generation precipitation of calcium carbonate with sodium carbonate and calcium chloride, then obtain through dehydration, drying and pulverizing.The granularity of described light calcium carbonate is 2-1000nm; Preferred size is the ultramicrofine light calcium carbonate of 2-50nm.Described activated calcium carbonate is light calcium carbonate powder prepared by improving technique condition, can select activated calcium carbonate product common on market, as the calcium powder that Jingxing, Shijiazhuang calcium carbonate factory produces.
PVC at high temperature processes, and very easily releases HCL, forms unstable polyene structure.Meanwhile, HCL has self-catalysis, and PVC can be made to degrade further.In addition, if aerobic exists or has iron, aluminium, zinc, tin, copper and cadmium plasma to exist, all to degrade katalysis to PVC, accelerate that it is aging.Therefore will there is various bad phenomenon in plastics, as variable color, distortion, be full of cracks, physical strength decline, electrical insulation capability decline, embrittlement etc.In order to address these problems, must add stablizer in formula, especially thermo-stabilizer is essential especially.The stablizer of PVC comprises thermo-stabilizer, oxidation inhibitor, UV light absorber and sequestrant.Require to select different varieties, the stablizer of different quantities according to goods service requirements and complete processing during formulating of recipe.In the present invention, described stablizer is calcium zinc series stablizer or rare earth class stablizer, can adopt the aforementioned stable agent that this area is commercial, as the CZX series nontoxic calcium zinc stablizer etc. of Sen Deli additives for plastics company limited of Shenzhen; The excellent machining performance of rare-earth stabilizer, can select the dustless rare earth complex heat stabilizer of PVC that Jinchang, Jinan produces along Chemical Co., Ltd..
Described PE wax and polyethylene wax, its molecular weight is generally 1500 ~ 50000, does not on average surpass 10000, is wax-like resin.Outward appearance is white or yellow small-particle.Polyethylene wax thermostability, chemical stability and electrical property are all fine, and melt viscosity and hardness, all close to paraffin, have stronger internal lubrication effect.
Stearic acid is also a kind of conventional lubricant, and it can serve as external lubricant, mainly through mixing with wood powder, covers wood powder surface equably, thus improves its bonding with polymeric matrix.The stearic acid that described stearic acid selects this area conventional.
Foaming control agent is polyacrylate(s) foaming control agent, can select the type that this area is conventional, as the ACR foaming control agent that Shandong Rui Feng polymer company limited produces.
Described whipping agent is azo amides heat release type whipping agent, as the Cellmic C 121 that this area is conventional.
Foaming control agent is polyacrylate(s) foaming control agent, can select the type that this area is conventional, as the ACR foaming control agent that Shandong Rui Feng polymer company limited produces.
Preferably, the upper layer that bathroom plate moulded by described wood adopts the raw material of following parts by weight to make:
PVC resin powder: 100 parts;
Secondary stock powder: 20 ~ 40 parts;
Calcareous weighting agent: 30 ~ 50 parts;
Stablizer: 2 ~ 5 parts;
PE wax: 0.9 ~ 1.1 part;
Stearic acid: 0.7 ~ 0.9 part;
Foaming control agent: 5 ~ 8 parts;
Whipping agent: 0.5 ~ 1.5 part.
Present invention also offers the method utilizing secondary stock to prepare wood plastic composite.
The preparation method of described secondary stock wood plastic composite comprises the steps:
1) the calcareous weighting agent being formula ratio 20-30% by secondary stock powder and quality adds stir mixing machine, mixes, and then adds PE wax and stearic acid, be heated to 100-110 DEG C, mix, then add PVC resin powder successively, stablizer, foaming control agent, whipping agent, the calcareous weighting agent of residual content, is heated to 130 ~ 150 DEG C, mix, then be cooled to 70 ~ 80 DEG C of releasings;
2) raw material mixed is added forcing machine, be heated to 140 ~ 180 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar.
The length of section bar, width, thickness can be determined arbitrarily according to customer requirement.
Adopt above-mentioned order of addition(of ingredients), first calcareous weighting agent can be combined closely with secondary stock powder, then PE wax and stearic acid carry out modification to above-mentioned hydrophilic particle, owing to carrying out at relatively high temperatures, mixing evenly, the hydrophobicity of particle surface can improve greatly, carry out at a lower temperature being subsequently mixed into PVC resin powder and stablizer, resin-oatmeal can be made to be combined in around above hydrophobic particle closely on the one hand, also the decomposition of PVC can be reduced on the other hand, improve the stability of the Wood-plastic material of final preparation, and at such a temperature, whipping agent and foaming control agent can the microporous foams of continous-stable, high speed extrusion, make resin material and calcareous weighting agent and above-mentioned wood fiber powder etc. dispersed, ensure that the material of Wood-plastic material and the homogeneity of physicals of final preparation.
Secondary stock wood plastic composite tool of the present invention has the following advantages:
1) the present invention fully can recycle papermaking material secondary stock to produce wood plastic composite, can not only play and carry out waste material recycling well, and be conducive to environmental protection;
2) Wood-plastic profiles of the present invention, be easy to processing, its processing length is unrestricted, and production efficiency is high, excellent property (zero formaldehyde, waterproof, protection against the tide, mildew-resistant, mothproof), the desired decoration material replacing common density board, multi-layered board in the future, after using the several years, can 100% recycling.
3) Wood-plastic profiles of the present invention, its production technique is simple, easy handling, good stability, is easy to processing.
Embodiment
Following examples only for illustration of the present invention, but are not used for limiting invention scope of the present invention.The technician in this field can make some nonessential improvement and adjustment according to the content of foregoing invention to the present invention.
If no special instructions, the method adopted is the method that this area is commonly used.The present embodiment adopt equipment also for this area commonly use equipment.Wherein the title of each raw material that embodiment 1-4 is used and manufacturer as shown in table 1:
Table 1 embodiment 1
-the raw material of 4 and producer
The light calcium carbonate of Jingxing, Shijiazhuang calcium carbonate factory selected by calcareous weighting agent; The polyethylene wax of Jiangyin Hong Sheng additives for plastics factory selected by PE wax; The Cellmic C 121 that whipping agent selects Hangzhou Hi-Tech Fine Chemical Co., Ltd to produce; Stearic acid adopts the stearic acid of Jiangyin Hong Sheng additives for plastics factory; Foaming control agent selects the ACR foaming control agent of Shandong Rui Feng polymer company limited;
Embodiment 1
Each raw material is taken by following portions by weight:
PVC resin powder: 100 parts;
Secondary stock powder: 40 parts;
Calcareous weighting agent: 30 parts;
Stablizer: 2 parts;
PE wax: 0.9 part;
Stearic acid: 0.7 part;
Foaming control agent: 5 parts;
Whipping agent: 0.5 part.
Prepare secondary stock wood plastic composite material sections as follows:
1) the calcareous weighting agent being formula ratio 30% by secondary stock powder and quality adds stir mixing machine, mixes, and then adds PE wax and stearic acid, be heated to 110 DEG C, mix, then add PVC resin powder successively, stablizer, foaming control agent, whipping agent, the calcareous weighting agent of residual content, is heated to 150 DEG C, mix, then be cooled to 80 DEG C of releasings;
2) raw material mixed is added forcing machine, be heated to 180 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar.
Embodiment 2
Each raw material is taken by following portions by weight:
PVC resin powder: 100 parts;
Secondary stock powder: 20 parts;
Calcareous weighting agent: 30 parts;
Stablizer: 2 parts;
PE wax: 0.9 part;
Stearic acid: 0.7 part;
Foaming control agent: 5 parts;
Whipping agent: 1.5 parts.
Prepare secondary stock wood plastic composite material sections as follows:
1) the calcareous weighting agent being formula ratio 30% by secondary stock powder and quality adds stir mixing machine, mixes, and then adds PE wax and stearic acid, be heated to 100 DEG C, mix, then add PVC resin powder successively, stablizer, foaming control agent, whipping agent, the calcareous weighting agent of residual content, is heated to 130 DEG C, mix, then be cooled to 70 DEG C of releasings;
2) raw material mixed is added forcing machine, be heated to 160 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar.
Embodiment 3
Each raw material is taken by following portions by weight:
PVC resin powder: 100 parts;
Secondary stock powder: 40 parts;
Calcareous weighting agent: 50 parts;
Stablizer: 5 parts;
PE wax: 1.1 parts;
Stearic acid: 0.9 part;
Foaming control agent: 8 parts;
Whipping agent: 1.5 parts.
Prepare secondary stock wood plastic composite material sections as follows:
1) the calcareous weighting agent being formula ratio 20% by secondary stock powder and quality adds stir mixing machine, mixes, and then adds PE wax and stearic acid, be heated to 100 DEG C, mix, then add PVC resin powder successively, stablizer, foaming control agent, whipping agent, the calcareous weighting agent of residual content, is heated to 130 DEG C, mix, then be cooled to 70 DEG C of releasings;
2) raw material mixed is added forcing machine, be heated to 140 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar.
Embodiment 4
Each raw material is taken by following portions by weight:
PVC resin powder: 100 parts; Secondary stock powder: 20 parts; Calcareous weighting agent: 50 parts;
Stablizer: 5 parts; PE wax: 1.1 parts; Stearic acid: 0.8 part;
Foaming control agent: 6 parts; Whipping agent: 1 part.
Prepare secondary stock wood plastic composite material sections as follows:
1) the calcareous weighting agent being formula ratio 20% by secondary stock powder and quality adds stir mixing machine, mixes, and then adds PE wax and stearic acid, be heated to 100 DEG C, mix, then add PVC resin powder successively, stablizer, foaming control agent, whipping agent, the calcareous weighting agent of residual content, is heated to 150 DEG C, mix, then be cooled to 80 DEG C of releasings;
2) raw material mixed is added forcing machine, be heated to 140 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar.
Product performance prepared by embodiment 1-4 are as shown in table 2:
The performance of table 2 secondary stock wood plastic composite material sections
Obviously, secondary stock wood plastic composite quality of the present invention is light, and water-intake rate is low, and mechanical property is good.
Claims (6)
1. a secondary stock wood plastic composite, is characterized in that, described secondary stock wood plastic composite adopts the raw material of following parts by weight to make:
PVC resin powder: 100 parts;
Secondary stock powder: 20 ~ 40 parts;
Calcareous weighting agent: 30 ~ 50 parts;
Stablizer: 2 ~ 5 parts;
PE wax: 0.9 ~ 1.1 part;
Stearic acid: 0.7 ~ 0.9 part;
Foaming control agent: 5 ~ 8 parts;
Whipping agent: 0.5 ~ 1.5 part;
Wherein the granularity of secondary stock powder is 50 ~ 80 orders.
2. secondary stock wood plastic composite as claimed in claim 1, it is characterized in that, described calcareous weighting agent is calcium carbonate.
3. secondary stock wood plastic composite as claimed in claim 1 or 2, is characterized in that, described stablizer is calcium zinc series stablizer or rare earth class stablizer.
4. secondary stock wood plastic composite as claimed in claim 1 or 2, it is characterized in that, described foaming control agent is polyacrylate(s) foaming control agent.
5. secondary stock wood plastic composite as claimed in claim 1 or 2, it is characterized in that, described whipping agent is azo amides heat release type whipping agent.
6. the preparation method of the secondary stock wood plastic composite as described in claim 1-5 any one, comprises the steps:
1) the calcareous weighting agent being formula ratio 20-30% by secondary stock powder and quality adds stir mixing machine, mixes, and then adds PE wax and stearic acid, be heated to 100-110 DEG C, mix, then add PVC resin powder successively, stablizer, foaming control agent, whipping agent, the calcareous weighting agent of residual content, is heated to 130 ~ 150 DEG C, mix, then be cooled to 70 ~ 80 DEG C of releasings;
2) raw material mixed is added forcing machine, be heated to 140 ~ 180 DEG C and extrude, through grinding tool sizing, cooling, traction, scale, cut into section bar.
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| CN104761845A (en) * | 2015-03-19 | 2015-07-08 | 安徽以诺木塑板材科技有限公司 | Moisture and mildew resistant wood plastic floor and production method thereof |
| CN104804448B (en) * | 2015-04-08 | 2017-04-12 | 江苏省农业科学院 | Industrialized production method of reed and wood-plastic composite material |
| CN105014998A (en) * | 2015-06-30 | 2015-11-04 | 桐城市诚信木塑科技材料有限公司 | Production technology of wood and plastic plate |
Citations (4)
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|---|---|---|---|---|
| CN101525456A (en) * | 2008-03-03 | 2009-09-09 | 翁端华 | PVC wood-plastic low foaming granule material and preparation method thereof |
| CN101880427A (en) * | 2009-05-08 | 2010-11-10 | 上海生之木建筑科技有限公司 | Renewable imitation wood and manufacturing method thereof |
| CN102653619A (en) * | 2012-04-24 | 2012-09-05 | 南京林业大学 | Polyvinyl chloride (PVC) wood-plastic composite material board and preparation method thereof |
| CN102922838A (en) * | 2012-11-17 | 2013-02-13 | 中国化学工程第十四建设有限公司 | Three-layer coextruded PVC (polyvinylchloride) wood-plastic composite foam board and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060267238A1 (en) * | 2005-05-31 | 2006-11-30 | Walter Wang | Polymer wood composite material and method of making same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525456A (en) * | 2008-03-03 | 2009-09-09 | 翁端华 | PVC wood-plastic low foaming granule material and preparation method thereof |
| CN101880427A (en) * | 2009-05-08 | 2010-11-10 | 上海生之木建筑科技有限公司 | Renewable imitation wood and manufacturing method thereof |
| CN102653619A (en) * | 2012-04-24 | 2012-09-05 | 南京林业大学 | Polyvinyl chloride (PVC) wood-plastic composite material board and preparation method thereof |
| CN102922838A (en) * | 2012-11-17 | 2013-02-13 | 中国化学工程第十四建设有限公司 | Three-layer coextruded PVC (polyvinylchloride) wood-plastic composite foam board and preparation method thereof |
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Effective date of registration: 20200521 Address after: 277600 Jianshe Road and 104 National Highway Interchange, Weishan Economic Development Zone, Jining, Shandong Patentee after: SHANDONG ENJOY ADVANCED MATERIAL Co.,Ltd. Address before: 277600, Weishan Economic Development Zone, Jining County, Shandong Province Patentee before: SHANDONG XIAGUANG INDUSTRIAL Co.,Ltd. |