CN104046048A - Formula for enhancing mold corrosion resistance of wheat straw/PP (polypropylene) wood-plastic composite material by using antimicrobial agent - Google Patents
Formula for enhancing mold corrosion resistance of wheat straw/PP (polypropylene) wood-plastic composite material by using antimicrobial agent Download PDFInfo
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- CN104046048A CN104046048A CN201410304274.XA CN201410304274A CN104046048A CN 104046048 A CN104046048 A CN 104046048A CN 201410304274 A CN201410304274 A CN 201410304274A CN 104046048 A CN104046048 A CN 104046048A
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Abstract
The invention relates to a formula for enhancing mold corrosion resistance of a wheat straw/PP (polypropylene) wood-plastic composite material by using antimicrobial agents. A filling material wheat straw modified by a coupling agent KH550 and a matrix PP are subjected to compounding and hot pressing to prepare the wheat straw/PP wood-plastic composite material with or without three antimicrobial agents (zinc borate, chlorothalonil and SD-36M); and five mold corrosion experiments are performed on the wheat straw/PP wood-plastic composite material with or without the antimicrobial agents to analyze the improvement action of the antimicrobial agents on the corrosion resistance of the wheat straw/PP composite material and obtain the optimal addition amounts of the antimicrobial agents. The result indicates that the zinc borate and chlorothalonil have favorable improvement action on the corrosion resistance of the wheat straw/PP composite material, and the improvement action of the SD-36M is small; the optimal addition amounts of the zinc borate and chlorothalonil are respectively 1% and 1.25%; and the wheat straw/PP composite material has favorable comprehensive properties after mold corrosion.
Description
Technical field
The present invention relates to the formula that a kind of antiseptic-germicide strengthens the resistance to mold corrosion of Wheat Straw/PP wood plastic composite, belong to the preparing technical field of Wood-plastic material.
Background technology
Wood plastic composite is the novel environment friendly material of widespread use in recent years, has the two advantage of timber and macromolecular material concurrently, and macromolecular material germ resistance is strong, and therefore wood plastic composite is more corrosion-resistant than timber, and manufacturer is also using this as one of attraction.But find in practical application that wood plastic composite still can be subject to mold corrosion under certain temperature, humidity environment, corrosion rear surface can form bacterial plaque or material mechanical performance and decline, greatly shorten wood plastic composite work-ing life.Therefore wood plastic composite is being applied its antimildew and antibacterial problem of middle solution, strengthens the exploitation of its mould damage control technique, the research and development production of acceleration environment-friendly type antiseptic-germicide, has become a significant problem in wood plastic composite industry.
Summary of the invention
The object of the invention is by mechanical property, water absorbing properties, colour-change and the surface tissue of Wood-plastic material after the experiment of test mold corrosion, carry out the research that different antiseptic-germicides improve Wheat Straw/PP matrix material corrosion resistance nature, inquire into the optimum amount of different antiseptic-germicides in wood plastic composite, solve the problem that wood plastic composite is subject to mold corrosion rear surface formation bacterial plaque, material mechanical performance decline, extend the work-ing life of wood plastic composite, actual wood is moulded to produce certain reference significance.
Technical scheme of the present invention is, a kind of antiseptic-germicide strengthens the formula of the resistance to mold corrosion of Wheat Straw/PP wood plastic composite, it is characterized in that: be made up of Wheat Straw, PP film, lubricant, antiseptic-germicide after processing, after described processing, Wheat Straw, PP film, lubricant, antiseptic-germicide account for respectively 50%, 43.5%～48.1%, 1.5%, 0.4%～5% of raw material total mass; After described processing, Wheat Straw is for to carry out surface treatment with KH550 to Wheat Straw powder, and KH550 consumption is 2% of Wheat Straw opaque amount; Described lubricant is Zinic stearas, in order to improve the dispersiveness of system and the mobility of material; Described antiseptic-germicide is zinc borate, m-tetrachlorophthalodinitrile and SD-36M, and every kind of antiseptic-germicide selects 5 kinds of additions, and zinc borate, m-tetrachlorophthalodinitrile and SD-36M account for respectively 1%～5%, 0.5%～1.5%, 0.4%～1.2% of raw material total mass.
Wheat Straw/PP wood plastic composite prepared by the present invention carries out mold corrosion experiment, and main reference standard ASTM G21 (measuring the standard implementation method of synthesizing polymeric material antifungal property) implements.Brief operation step is as follows:
Step 1: get 5 kinds of storage bacterial classifications (aspergillus niger, Chaetomium globosum, Aureobasidium pullulans, green sticky broom mould, have a liking for loose mould), be inoculated in respectively in potato-dextrose culture-medium, again cultivate 7～20 days at 28 DEG C～30 DEG C;
Step 2: according to American Standard ASTM G21 configuration nutritive salt substratum, culture medium solution is poured in sterile petri dish, thickness is about 3～6mm, after culture medium solidifying, sample is put in its surface;
Step 3: get the bacterial classification of again cultivating, 10ml aqua sterilisa is poured into, with the platinum wire of aseptic nichrome, the spore on scraping surface gently from the test organisms of new cultivation, spore nutrient solution is poured in the sterilizing conical flask of 125mL, in bottle, 45mL aqua sterilisa and 10～15 glass spheres that diameter is 5mm are housed.Firmly shake flask, fungal spore and mycelium are disperseed and break spore ball;
Step 4: the bacteria suspension after shaking by the disinfecting silk or cotton filtered through gauze in glass funnel is also poured in sterilizing flask, removes mycelia;
Step 5: be configured to isocyatic 5 kinds of spore suspensions with nutrient salt solution (identical with nutritive salt nutrient media components but do not add agar), after balanced mix, be evenly sprayed onto Wheat Straw/PP matrix material specimen surface, aforesaid operations completes on clean bench.The sample of having inoculated is put into climatic chamber it is carried out to accelerated corrosion, accelerated corrosion condition is: temperature is 28 DEG C, and humidity is 85%, and the time is 4 weeks.
The invention has the beneficial effects as follows, with reference to ASTM G21 testing method, i.e. the standard implementation method of synthesizing polymeric material antifungal property, selects 5 kinds of moulds to corrode wood plastic composite first, and environmental aspect more gets close to nature; Inquire into zinc borate, m-tetrachlorophthalodinitrile and the antiseptic-germicide SD-36M impact on the resistance to mold corrosion performance of Wheat Straw/PP matrix material, and draw the optimum addition of antiseptic-germicide, having solved wood plastic composite is subject to mold corrosion rear surface and forms the problem that bacterial plaque, material mechanical performance decline, extend the work-ing life of wood plastic composite, actual wood is moulded to produce certain reference significance.
Result shows: zinc borate, m-tetrachlorophthalodinitrile all have better improvement effect to the corrosion resistance nature of Wheat Straw/PP matrix material, and improvement effect is very little for SD-36M.Zinc borate and m-tetrachlorophthalodinitrile optimum addition are respectively 1% and 1.25%, and its Wheat Straw/PP matrix material over-all properties after corrosion is better.Zinc borate addition is that Wheat Straw/PP matrix material of 1% is after corrosion in 4 weeks, compared with not adding antiseptic-germicide, its flexural strength has improved 15.67%, bending elastic modulus has improved 75.32%, tensile strength has improved 22.34%, shock strength has improved 7.18%, water absorption decreased 31.33%, value of chromatism has reduced 7.83; M-tetrachlorophthalodinitrile addition be 1.25% Wheat Straw/PP matrix material 4 weeks corrosion after, flexural strength has improved 13.71%, bending elastic modulus has improved 54.91%, tensile strength has improved 10.46%, shock strength has improved 47.53%, water absorption decreased 23.69%, value of chromatism has reduced 11.56.
Embodiment
The preparation of wood plastic composite is implemented according to following steps:
Step 1: after recovery Wheat Straw is dried naturally, carry out impurity elimination, make its without going mouldy, inclusion-free, without caking, Wheat Straw grinding screen is selected to the needed granularity of experiment: 60 orders.
Step 2: granularity 60 order Wheat Straw powder are dried, Wheat Straw powder is carried out to surface treatment with KH550, KH550 consumption is Wheat Straw opaque amount 2%; Good pre-treatment Wheat Straw powder is dried, add various auxiliary agents to carry out proportioning according to experimental program, Wheat Straw powder and auxiliary agent are stirred; Get and above-mentionedly handle Wheat Straw powder well and appropriate PP film is mixing in opening rubber mixing machine, front roll temperature is 175 DEG C, and driving roll temperature is 170 DEG C, and mixing time is 5min; Material is mixing puts into vulcanizing press compression molding after evenly, and molding temperature is 180 DEG C, and pressure is 12.5MPa, and the time is 12min.
The sample proportioning of adding zinc borate is as follows:
The sample proportioning of adding m-tetrachlorophthalodinitrile is as follows:
The sample proportioning of adding SD-36M is as follows:
Mold corrosion experiment, main reference standard ASTM G21 (measuring the standard implementation method of synthesizing polymeric material antifungal property) implements.Brief operation step is as follows:
Step 1: get 5 kinds of storage bacterial classifications (aspergillus niger, Chaetomium globosum, Aureobasidium pullulans, green sticky broom mould, have a liking for loose mould), be inoculated in respectively in potato-dextrose culture-medium, again cultivate 7～20 days at 28 DEG C～30 DEG C.
Step 2: according to American Standard ASTM G21 configuration nutritive salt substratum, culture medium solution is poured in sterile petri dish, thickness is about 3～6mm, after culture medium solidifying, sample is put in its surface.
Step 3: get the bacterial classification of again cultivating, 10ml aqua sterilisa is poured into, with the platinum wire of aseptic nichrome, the spore on scraping surface gently from the test organisms of new cultivation, spore nutrient solution is poured in the sterilizing conical flask of 125mL, in bottle, 45mL aqua sterilisa and 10～15 glass spheres that diameter is 5mm are housed.Firmly shake flask, fungal spore and mycelium are disperseed and break spore ball.
Step 4: the bacteria suspension after shaking by the disinfecting silk or cotton filtered through gauze in glass funnel is also poured in sterilizing flask, removes mycelia.
Step 5: be configured to isocyatic 5 kinds of spore suspensions with nutrient salt solution (identical with nutritive salt nutrient media components but do not add agar), after balanced mix, be evenly sprayed onto Wheat Straw/PP matrix material specimen surface, aforesaid operations completes on clean bench.The sample of having inoculated is put into climatic chamber it is carried out to accelerated corrosion, accelerated corrosion condition is: temperature is 28 DEG C, and humidity is 85%, and the time is 4 weeks.
Below disclose the present invention with better enforcement, so it is not intended to limiting the invention, all take to be equal to replace or technical scheme that equivalent transformation obtains, all drop in protection scope of the present invention.
Claims (2)
1. the formula of the resistance to mold corrosion of antiseptic-germicide enhancing Wheat Straw/PP wood plastic composite, it is characterized in that being made up of Wheat Straw, PP film, lubricant, antiseptic-germicide after processing, after described processing, Wheat Straw, PP film, lubricant, antiseptic-germicide account for respectively 50%, 43.5%～48.1%, 1.5%, 0.4%～5% of raw material total mass; After described processing, Wheat Straw is for to carry out surface treatment with KH550 to Wheat Straw powder, and KH550 consumption is 2% of Wheat Straw opaque amount; Described lubricant is Zinic stearas, in order to improve the dispersiveness of system and the mobility of material; Described antiseptic-germicide is zinc borate, m-tetrachlorophthalodinitrile and SD-36M, and every kind of antiseptic-germicide selects 5 kinds of additions, and zinc borate, m-tetrachlorophthalodinitrile and SD-36M account for respectively 1%～5%, 0.5%～1.5%, 0.4%～1.2% of raw material total mass.
2. a kind of antiseptic-germicide according to claim 1 strengthens the formula of the resistance to mold corrosion of Wheat Straw/PP wood plastic composite, it is characterized in that, implements according to following steps:
Step 1: get 5 kinds of storage bacterial classifications (aspergillus niger, Chaetomium globosum, Aureobasidium pullulans, green sticky broom mould, have a liking for loose mould), be inoculated in respectively in potato-dextrose culture-medium, again cultivate 7～20 days at 28 DEG C～30 DEG C;
Step 2: according to American Standard ASTM G21 configuration nutritive salt substratum, culture medium solution is poured in sterile petri dish, thickness is about 3～6mm, after culture medium solidifying, sample is put in its surface;
Step 3: get the bacterial classification of again cultivating, 10ml aqua sterilisa is poured into, with the platinum wire of aseptic nichrome, the spore on scraping surface gently from the test organisms of new cultivation, spore nutrient solution is poured in the sterilizing conical flask of 125mL, in bottle, 45mL aqua sterilisa and 10～15 glass spheres that diameter is 5mm are housed; Firmly shake flask, fungal spore and mycelium are disperseed and break spore ball;
Step 4: the bacteria suspension after shaking by the disinfecting silk or cotton filtered through gauze in glass funnel is also poured in sterilizing flask, removes mycelia;
Step 5: be configured to isocyatic 5 kinds of spore suspensions with nutrient salt solution (identical with nutritive salt nutrient media components but do not add agar), after balanced mix, be evenly sprayed onto Wheat Straw/PP matrix material specimen surface, aforesaid operations completes on clean bench, the sample of having inoculated is put into climatic chamber it is carried out to accelerated corrosion, accelerated corrosion condition is, temperature is 28 DEG C, and humidity is 85%, and the time is 4 weeks.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277303A (en) * | 2014-10-29 | 2015-01-14 | 安徽省皖捷液压科技有限公司 | Flame-retardant nozzle |
| CN105583934A (en) * | 2015-11-30 | 2016-05-18 | 万华生态板业股份有限公司 | Application of ZB (Zinc Borate) which is used as mildew preventive in production of straw boards |
| CN106280524A (en) * | 2016-08-29 | 2017-01-04 | 桂林舒康建材有限公司 | Antibiosis wood plastic composite material and preparation method thereof |
| CN106750464A (en) * | 2016-12-27 | 2017-05-31 | 南京聚锋新材料有限公司 | A kind of mold-proof method of Wood plastic composite |
| CN107523081A (en) * | 2017-09-26 | 2017-12-29 | 苏州卫刚木包装制品有限公司 | A kind of anti-bacterial and anti-fouling wood moulding packaging material and preparation method thereof |
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| CN102152366A (en) * | 2010-12-03 | 2011-08-17 | 湖州新峰木塑复合材料有限公司 | Manufacturing process of raised floor and raise floor manufactured by process |
| CN102924951A (en) * | 2012-11-26 | 2013-02-13 | 科创聚合物(苏州)有限公司 | Technique for making mouldproof antibacterial wood plastic composite |
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2014
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| CN102152366A (en) * | 2010-12-03 | 2011-08-17 | 湖州新峰木塑复合材料有限公司 | Manufacturing process of raised floor and raise floor manufactured by process |
| CN102924951A (en) * | 2012-11-26 | 2013-02-13 | 科创聚合物(苏州)有限公司 | Technique for making mouldproof antibacterial wood plastic composite |
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| 薛娇: "麦秸秆/PP复合材料耐腐蚀性能研究", 《中国优秀硕士学位沦为全文数据库 工程塑料Ⅰ辑》, no. 01, 15 January 2014 (2014-01-15), pages 11 - 14 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277303A (en) * | 2014-10-29 | 2015-01-14 | 安徽省皖捷液压科技有限公司 | Flame-retardant nozzle |
| CN105583934A (en) * | 2015-11-30 | 2016-05-18 | 万华生态板业股份有限公司 | Application of ZB (Zinc Borate) which is used as mildew preventive in production of straw boards |
| CN106280524A (en) * | 2016-08-29 | 2017-01-04 | 桂林舒康建材有限公司 | Antibiosis wood plastic composite material and preparation method thereof |
| CN106750464A (en) * | 2016-12-27 | 2017-05-31 | 南京聚锋新材料有限公司 | A kind of mold-proof method of Wood plastic composite |
| CN107523081A (en) * | 2017-09-26 | 2017-12-29 | 苏州卫刚木包装制品有限公司 | A kind of anti-bacterial and anti-fouling wood moulding packaging material and preparation method thereof |
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Application publication date: 20140917 |