CN105196655A - Eucahetus dunnii-polypropylene film composite material - Google Patents
Eucahetus dunnii-polypropylene film composite material Download PDFInfo
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- CN105196655A CN105196655A CN201410300287.XA CN201410300287A CN105196655A CN 105196655 A CN105196655 A CN 105196655A CN 201410300287 A CN201410300287 A CN 201410300287A CN 105196655 A CN105196655 A CN 105196655A
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- dunnii
- hot pressing
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- wood
- polypropylene film
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Abstract
The invention relates to the technique field of production of wood-plastic composite materials, in particular to a preparation technology of a eucahetus dunnii-polypropylene film composite material. The eucahetus dunnii and a polypropylene film are taken as main raw materials for production of the composite material, and the production technology effect can be optimal by controlling hot pressing temperature, hot pressing time, hot pressing pressure, polypropylene film consumption and the like. Moreover, under optimal technological parameter conditions, the water-fast cement strength can meet the requirement of I-type plywood in the GB/T 9846.1-88 standard.
Description
Technical field:
The present invention relates to wood plastic composite manufacturing technology field, particularly the preparation technology of a kind of E. dunnii/polypropylene screen composite.
Background technology:
The preparation of wood plastic composite is that wood powder and thermosetting resin phenolic resins compound are prepared from the earliest.Afterwards to the seventies and eighties, utilization wood powder and polypropylene were mixed and made into wood plastic composite is applied to ford liner by means of the advantage that it is inexpensive, light weight intensity is high mutually, thus wood plastic composite is utilized fast and develops.Many researchers all attempt using various string as cornstalk, wheat straw, jute even coconut husk equal thermoplastic resin compound, and improve the performance of its composite; Also have researcher to study and improve the wooden compositely proportional moulded, thus attempt to develop superior performance, colory wood-plastic products.Very extensive to the research of wood plastic composite both at home and abroad, research process the early stage mainly concentrated on for wood powder, for the aspect such as research of the application of raw material waste or used plastics and the water absorbing properties of composite and performance raising.
The people such as Esnaashari have studied machinery and the water absorbing properties of sawdust LDPE Composite, and result shows that improving wood powder content can significantly improve stretching and bending property from 40% ~ 60%, strengthens the diffusivity of water and significantly reduces toughness; The people such as Ayrilmis have studied low density polyethylene (LDPE) as the sandwich layer of adhesive for particieboard, show that low density ethylene content is within 10%, along with the rising of content, rupture modulus and elastic modelling quantity increase gradually, but increase content further, MOR and MOE but reduces; The people such as Wang, Y study the interface compatibility of wood powder PP composite material with Method of Stress Relaxation, and research shows that temperature is higher, and stress relaxation must be faster, and during wood powder content 40%, wood powder and polypropylene have optimum interface compatibility; People's high density polyethylene (HDPE)s such as Qi, CS and cotton stalk use hot press molding mode to prepare composite, and result shows that the mechanical performance of composite increases along with the size increase of cotton stalk bundle; The chemical composition of people's hot water extracting such as Pelaez-Samaniego and the unpeeled Ponderosa Pine of amendment, then composite is prepared with the pine of untreated pine and process, polypropylene, polyethylene and a small amount of additive, draw the water that the composite of the pine making processed is more less than untreated absorption 46 ~ 45%, mechanical performance increases.
China is more late for the research of wood plastic composite.The 1980s, Fujian Forestry Inst. and Chinese forest-science academy have carried out Primary Study to wood powder and the compound of waste or used plastics, the mechanical performance of composite and processing technology and equipment etc.Until the nineties, China has just carried out studying widely in a large number to wood plastic composite, comprises the problem such as interface compatibility, processing technology.At present, the domestic research to wood plastic composite focuses mostly at material modification, technological parameter, the aspects such as interface performance.
Yang Wenbins etc. have studied density, the addition of plastics, hot pressing time, hot pressing temperature to the impact of wood and plastic composite performance; Analogy Yun Shui etc. has inquired into the charge ratio of wooden shavings and polypropylene plastics to the impact of the main physico-mechanical performance of sheet material.The change of the timber constituent element form of different tree species, the change of reinforcing agent, the difference of plastics kind and the panel density by orthogonal test research such as Wang Zheng and wood mould than not equal silver on the impact of wood plastic composite physical and mechanical property.The wood plastic composite that Hou Xiuying manufactures with injection molding process, result of study shows that wood-fibred consumption is the principal element affecting composite property; Hu Shiming have studied and adopts expressing technique to prepare the mechanical property of wood plastics composite template and the relation of composite material interface and different surface treatment and glued joint the impact of performance change to compound; Million good, and Li Zhiren analyzes main technologic parameters wood shavings moisture content, hot pressing temperature, and resin added is on the impact of wood-plastic composite particleboard performance.Zhang Kehong with high density polyethylene (HDPE) (HDPE) and wood powder be primary raw material, maleic anhydride grafted polyethylene (MAPE) and silane coupler (KH570) for interface modifier, adopt shaping method to suppress prepared PE base wood-plastic composite material.Have studied interface modifier MAPE and KH570 consumption to the impact of composite materials property.Xie Bo etc. have studied the PP/ Wood Fiber Composites that different molding proces s parameters (injection temperature, dwell pressure) preparation has different microcellular structure, analyze the relation having inquired into molding proces s parameters and composite microporous structure and impact property; Week, woods adopted KH-570 to carry out modification to APP, and make the mechanical property of wood plastic composite, fire resistance and thermal degradation performance significantly improve.
Summary of the invention:
The present invention is with E. dunnii and polypropylene screen for main raw material(s), and manufacture E. dunnii/polypropylene screen composite, the manufacturing step related to, assembly structure are shown in accompanying drawing 1, accompanying drawing 2.
The optimum process manufacturing E. dunnii/polypropylene screen composite is: hot pressing temperature 180 DEG C, hot pressing pressure 0.9MPa, hot pressing time 420s, polypropylene screen consumption 150g/m
2.
Beneficial effect of the present invention:
At present, composite wooden material preparation should based on " three-aldehyde glue ", " three-aldehyde glue " greatest problem is that material works the mischief to people are healthy at the formaldehyde produced and discharge in use procedure, and formaldehyde is declared as one-level carcinogenic substance as far back as the World Health Organization in No. 153 bulletin issued on June 5th, 2004; Thus seek preparation " without aldehyde " environment-friendly type composite wooden material, alternative " three-aldehyde glue " class material becomes the ideal material that people expect always.As everyone knows, plastics as one of four large materials are widely used in people among daily life always, research shows: composite property excellence prepared by primary or that reclaim plastic powders and wood-fibred, wood powder, illustrate that plastics possess and can replace traditional adhesive producing composite wooden material characteristic, and this material discharges without free formaldehyde.Up to now, prepare wood plastic composite research with plastics " film " as raw material less, general-purpose plastics polypropylene (PP), compared with polyethylene (PE), has product light weight, heat resistance and the advantage such as resistance to ability of endurance boiling water is good.The present invention uses E. dunnii and polypropylene membrane material to prepare composite, and under optimal procedure parameters condition, water proof bonding strength meets the requirement of I class glued board in GB/T9846.1-88 standard, and the present invention is that Appropriate application Eucalyptus resource creates good theoretical foundation.
Detailed description of the invention:
Accompanying drawing 1 is E. dunnii/polypropylene screen composite material manufacturing technology.
(1) test material
E. dunnii (EuCahetusdunniiMaiden), takes from Guangxi China area, specification: 400 × 400 × 2 (mm), seals up for safekeeping after being dried to moisture content about 9%.
Polypropylene (PP) film: be purchased from Beijing, thickness is 0.04mm, and density is about 0.9g/cm
3.
(2) testing equipment
150T universal test press: BY302 × 2/15 type, nominal pressure 1500KN, heating platen breadth 500 × 500 (mm), Suzhou Xinxieli Machine Manufacturing Co., Ltd.; QD type cold press, Shanghai Artificial Plate Machine Plant.
(3) hot pressing.Polypropylene screen is cut into 400mm × 400mm, and put hot pressing in hot press into by after the single plate cross texture assembly processed, accompanying drawing 2 is structural representation.In hot pressing, ensure that heat fully transmits by the mode of point two sections of releases.For preventing polypropylene screen from shrinking resilience in cooling procedure, should cold pressing immediately after hot pressing, duration 5min.
Claims (2)
1. based on the preparation technology of E. dunnii/polypropylene screen composite, it comprises manufactured materials and technological parameter, it is characterized in that: it also comprises step and the assembly structure of manufacture.
2. E. dunnii/polypropylene screen composite material preparation process parameter according to claim 1, is characterized in that: hot pressing temperature, hot pressing time, hot pressing pressure, polypropylene screen consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300287.XA CN105196655A (en) | 2014-06-30 | 2014-06-30 | Eucahetus dunnii-polypropylene film composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300287.XA CN105196655A (en) | 2014-06-30 | 2014-06-30 | Eucahetus dunnii-polypropylene film composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105196655A true CN105196655A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410300287.XA Pending CN105196655A (en) | 2014-06-30 | 2014-06-30 | Eucahetus dunnii-polypropylene film composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097322A (en) * | 2017-05-17 | 2017-08-29 | 北京林业大学 | A kind of string adhering technique based on PHA film |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870127A (en) * | 2009-04-27 | 2010-10-27 | 唐善学 | Manufacturing method of thermoplastic resin wood composite board and special equipment |
| CN103144152A (en) * | 2013-03-13 | 2013-06-12 | 中国林业科学研究院木材工业研究所 | Formaldehyde-free plywood and fabrication method thereof |
| CN103240774A (en) * | 2013-04-28 | 2013-08-14 | 福建农林大学 | Environment-friendly flame-retardant degradable composite structure plywood and manufacturing method thereof |
| CN203542759U (en) * | 2013-11-06 | 2014-04-16 | 湖南风河竹木科技有限公司 | Glued formwork made of eucalyptus wood |
-
2014
- 2014-06-30 CN CN201410300287.XA patent/CN105196655A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870127A (en) * | 2009-04-27 | 2010-10-27 | 唐善学 | Manufacturing method of thermoplastic resin wood composite board and special equipment |
| CN103144152A (en) * | 2013-03-13 | 2013-06-12 | 中国林业科学研究院木材工业研究所 | Formaldehyde-free plywood and fabrication method thereof |
| CN103240774A (en) * | 2013-04-28 | 2013-08-14 | 福建农林大学 | Environment-friendly flame-retardant degradable composite structure plywood and manufacturing method thereof |
| CN203542759U (en) * | 2013-11-06 | 2014-04-16 | 湖南风河竹木科技有限公司 | Glued formwork made of eucalyptus wood |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097322A (en) * | 2017-05-17 | 2017-08-29 | 北京林业大学 | A kind of string adhering technique based on PHA film |
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Application publication date: 20151230 |
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