CN103991122A - Manufacturing method for high-strength physiochemical board - Google Patents
Manufacturing method for high-strength physiochemical board Download PDFInfo
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- CN103991122A CN103991122A CN201410140968.4A CN201410140968A CN103991122A CN 103991122 A CN103991122 A CN 103991122A CN 201410140968 A CN201410140968 A CN 201410140968A CN 103991122 A CN103991122 A CN 103991122A
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Abstract
The invention discloses a manufacturing method for a high-strength physiochemical board. The method comprises the following steps that wood fibers, modified urea-formaldehyde resin adhesive, a curing agent and a buffering agent are weighed and taken; the wood fibers are placed into a drying agent for drying until the humidity of the fibers is below 5 percent; then, the PMDI modified urea-formaldehyde resin adhesive, the curing agent and the buffering agent are added into the dried wood fibers, and the dried wood fibers, the PMDI modified urea-formaldehyde resin adhesive, the curing agent and the buffering agent are mixed to be uniform; after mixing is completed, the mixture is fed to a mold for mat formation, fed into a hot press for hot pressing and forming and then cooled to the room temperature to obtain base material; bisphenol-F type epoxy resin, teflon, ceramic powder, phenolic resin, reinforced resin and titanium dioxide are weighed, taken and sprayed onto colored paper through a coating machine to obtain a corrosion-resistant physiochemical film after being mixed to be uniform; the corrosion-resistant physiochemical film is pasted on the surface of the base material through the PMDI modified urea-formaldehyde resin adhesive to obtain the high-strength physiochemical board after cold treatment. The high-strength physiochemical board is resistant to corrosion, high temperature and abrasion, and the manufacturing process of the high-strength physiochemical board is simple.
Description
Technical field
The present invention relates to physics and chemistry plate technique field, relate in particular to a kind of preparation method of high strength physics and chemistry plate.
Background technology
Along with scientific and technological develop rapidly, various laboratories are more and more, and the laboratory complete set of equipments needing also can increase gradually; And physics and chemistry plate will have the performances such as wear-resisting, corrosion-resistant and high temperature resistant as requisite material, high strength physics and chemistry plate corrosion-resistant prepared by some traditional production technologies, service life is short, can not meet the requirement of laboratory table top material.Therefore the physics and chemistry plate that, need to develop the applicable existing market of a kind of corrosion-resistant excellence is to meet client's requirements at the higher level.
Summary of the invention
The present invention proposes high strength physics and chemistry plate and preparation method thereof, described high strength physics and chemistry plate is high temperature resistant, anti-wear performance good, excellent anti-corrosion performance, and long service life, preparation technology is simple.
The preparation method of a kind of high strength physics and chemistry plate that the present invention proposes, comprises the steps:
S1, prepare base material: according to percentage by weight, take following raw material: 45-48% wood fibre, 46-49%PMDI modified urea-formaldehyde resin adhesive, 3-4.2% curing agent and 2-3% buffer, to pulverize, wood fibre after grinding is sent in drier and is dried, baking temperature is 180-200 ℃, be dried to fiber moisture below 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, curing agent and buffer mix, in batch mixing being sent into mould after mixed glue completes, mat formation and place 25-32min, after having mated formation, then send into and in hot press, carry out hot pressing, the operating air pressure of hot pressing is 6-8kg/cm
2, hot pressing temperature is 200-240 ℃, carries out moulding and be cooled to room temperature after hot pressing completes, and obtains base material,
S2, prepare corrosion-resistant physics and chemistry film: according to percentage by weight, take following raw material: bisphenol f type epoxy resin 25-30%, polytetrafluoroethylene (PTFE) 14-17%, ceramic powder 35-40%, phenolic resins 10-15%, strengthen resin 1-4%, titanium dioxide 2-5%, after bisphenol f type epoxy resin, polytetrafluoroethylene (PTFE), ceramic powder, phenolic resins, enhancing resin, titanium dioxide are mixed, by flush coater, spray on Colored Paper, obtain corrosion-resistant physics and chemistry film;
S3, preparation high strength physics and chemistry plate: the corrosion-resistant physics and chemistry film that S2 is obtained is bonded in by PMDI modified urea-formaldehyde resin adhesive the substrate surface that S1 obtains, and then in cold press, carries out cold treatment and obtains high strength physics and chemistry plate.
In the specific embodiment, in S1, by weight percentage, wood fibre can be 45%, 45.6%, 46%, 46.08%, 46.33%, 47%, 47.8%, 48%, PMDI modified urea-formaldehyde resin adhesive can be 46%, 46.45%, 47%, 47.32%, 48%, 49%, curing agent can be 3%, 3.5%, 3.68%, 3.8%, 4%, 4.2%, and buffer can be 2%, 2.3%, 2.5%, 2.8%, 2.9%, 3%; In S2, by weight percentage, bisphenol f type epoxy resin can be 25%, 26%, 27%, 28%, 30%, polytetrafluoroethylene (PTFE) can be 14%, 15%, 16%, 17%, ceramic powder can be 35%, 36%, 38%, 39%, 40%, phenolic resins can be 10%, 12%, 13%, 14%, 15%, and strengthening resin can be 1%, 2%, 3%, 4%, and titanium dioxide can be 2%, 3%, 4%, 5%.
Preferably, the raw materials by weight of described base material is: 45-47% wood fibre, 47-49%PMDI modified urea-formaldehyde resin adhesive, 3.5-3.7% curing agent and 2-3% buffer; Described baking temperature is controlled at 185-190 ℃, places 27-30min in pavement process, and the operating air pressure of hot pressing is 7-8kg/cm
2, hot pressing temperature is 215-225 ℃.
Preferably, the raw materials by weight of described corrosion-resistant physics and chemistry film is: bisphenol f type epoxy resin 27-30%, and polytetrafluoroethylene (PTFE) 14-16%, ceramic powder 36-39%, phenolic resins 12-14%, strengthens resin 1-3%, titanium dioxide 3-4%.
Preferably, the raw materials by weight of described corrosion-resistant physics and chemistry film comprises: bisphenol f type epoxy resin 28%, and polytetrafluoroethylene (PTFE) 15%, ceramic powder 38%, phenolic resins 13%, strengthens resin 2%, titanium dioxide 4%.
In the present invention, described corrosion-resistant physics and chemistry film is used not solvent-laden coating, and bisphenol f type epoxy resin, enhancing resin and ceramic powder share and rationally control the proportioning of three in raw material, coordinate and add appropriate polytetrafluoroethylene (PTFE), the coefficient of friction of polytetrafluoroethylene (PTFE) is little, lubrication is obvious, can make each component in raw material mix, after said components acting in conjunction, the antiacid alkali resistance of goods is good, and be dissolved in hardly all solvents, decay resistance, high temperature resistant enhancing greatly, and sealing, electrical insulating property and ageing resistance also have obvious raising; Ceramic powder density is little, lightweight, the impact of being expanded with heat and contract with cold is less than steel, can in the comparatively violent environment of difference variation, work, it is high temperature resistant, corrosion-resistant and anti-wear performance is more excellent, ceramic powder and titanium dioxide are used in conjunction with the performance that can significantly improve corrosion-resistant physics and chemistry film, and anti-aging and strengthening action are more obvious, and the use cost of reduction material that can be by a relatively large margin; Because corrosion-resistant physics and chemistry film contains phenolic resins and PMDI modified urea-formaldehyde resin adhesive, so use the bonding corrosion-resistant physics and chemistry film of MDI modified urea-formaldehyde resin adhesive and base material, jointing material is consistent, cohesive force is stronger, because the cohesive force of phenolic resins is more excellent and good with various compatibilities organic and inorganic filler, with PMDI modified urea-formaldehyde resin adhesive immixture and rationally control proportioning, the cementation power of corrosion-resistant physics and chemistry film and base material is extremely strong, adhesion strength is high, and cost is lower; In the present invention, high temperature resistant, the wear-resisting and decay resistance of above-mentioned high strength physics and chemistry plate is all better than national standard, and preparation technology is simple, and cost is lower.
Accompanying drawing explanation
Fig. 1 is preparation technology's flow chart of a kind of high strength physics and chemistry plate of proposing of the present invention.
The specific embodiment
As shown in Figure 1, Fig. 1 is preparation technology's flow chart of a kind of high strength physics and chemistry plate of proposing of the present invention.
With reference to Fig. 1, the preparation method of a kind of high strength physics and chemistry plate that the present invention proposes, comprises the steps:
S1, prepare base material: according to percentage by weight, take following raw material: 45-48% wood fibre, 46-49%PMDI modified urea-formaldehyde resin adhesive, 3-4.2% curing agent and 2-3% buffer, to pulverize, wood fibre after grinding is sent in drier and is dried, baking temperature is 180-200 ℃, be dried to fiber moisture below 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, curing agent and buffer mix, in batch mixing being sent into mould after mixed glue completes, mat formation and place 25-32min, after having mated formation, then send into and in hot press, carry out hot pressing, the operating air pressure of hot pressing is 6-8kg/cm
2, hot pressing temperature is 200-240 ℃, carries out moulding and be cooled to room temperature after hot pressing completes, and obtains base material,
S2, prepare corrosion-resistant physics and chemistry film: according to percentage by weight, take following raw material: bisphenol f type epoxy resin 25-30%, polytetrafluoroethylene (PTFE) 14-17%, ceramic powder 35-40%, phenolic resins 10-15%, strengthen resin 1-4%, titanium dioxide 2-5%, after bisphenol f type epoxy resin, polytetrafluoroethylene (PTFE), ceramic powder, phenolic resins, enhancing resin, titanium dioxide are mixed, by flush coater, spray on Colored Paper, obtain corrosion-resistant physics and chemistry film;
S3, preparation high strength physics and chemistry plate: the corrosion-resistant physics and chemistry film that S2 is obtained is bonded in by PMDI modified urea-formaldehyde resin adhesive the substrate surface that S1 obtains, and then in cold press, carries out cold treatment and obtains high strength physics and chemistry plate.
Embodiment 1
The preparation method of a kind of high strength physics and chemistry plate that the present embodiment proposes, comprises the steps:
S1, prepare base material: according to percentage by weight, take following raw material: 46.5% wood fibre, 47.3%PMDI modified urea-formaldehyde resin adhesive, 3.7% curing agent and 2.5% buffer, to pulverize, wood fibre after grinding is sent in drier and is dried, baking temperature is 200 ℃, be dried to fiber moisture below 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, curing agent and buffer mix, in batch mixing being sent into mould after mixed glue completes, mat formation and place 30min, after having mated formation, then send into and in hot press, carry out hot pressing, the operating air pressure of hot pressing is 6kg/cm
2, hot pressing temperature is 240 ℃, carries out moulding and be cooled to room temperature after hot pressing completes, and obtains base material,
S2, prepare corrosion-resistant physics and chemistry film: according to percentage by weight, take following raw material: bisphenol f type epoxy resin 30%, polytetrafluoroethylene (PTFE) 17%, ceramic powder 37%, phenolic resins 10%, strengthen resin 4%, titanium dioxide 2%, after bisphenol f type epoxy resin, polytetrafluoroethylene (PTFE), ceramic powder, phenolic resins, enhancing resin, titanium dioxide are mixed, by flush coater, spray on Colored Paper, obtain corrosion-resistant physics and chemistry film;
S3, preparation high strength physics and chemistry plate: the corrosion-resistant physics and chemistry film that S2 is obtained is bonded in by PMDI modified urea-formaldehyde resin adhesive the substrate surface that S1 obtains, and then in cold press, carries out cold treatment and obtains high strength physics and chemistry plate.
Embodiment 2
The preparation method of a kind of high strength physics and chemistry plate that the present embodiment proposes, comprises the steps:
S1, prepare base material: according to percentage by weight, take following raw material: 47% wood fibre, 47%PMDI modified urea-formaldehyde resin adhesive, 4% curing agent and 2% buffer, to pulverize, wood fibre after grinding is sent in drier and is dried, baking temperature is 180 ℃, be dried to fiber moisture below 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, curing agent and buffer mix, in batch mixing being sent into mould after mixed glue completes, mat formation and place 25min, after having mated formation, then send into and in hot press, carry out hot pressing, the operating air pressure of hot pressing is 8kg/cm
2, hot pressing temperature is 220 ℃, carries out moulding and be cooled to room temperature after hot pressing completes, and obtains base material,
S2, prepare corrosion-resistant physics and chemistry film: according to percentage by weight, take following raw material: bisphenol f type epoxy resin 29%, polytetrafluoroethylene (PTFE) 17%, ceramic powder 36%, phenolic resins 13%, strengthen resin 1% and titanium dioxide 4%, after bisphenol f type epoxy resin, polytetrafluoroethylene (PTFE), ceramic powder, phenolic resins, enhancing resin, titanium dioxide are mixed, by flush coater, spray on Colored Paper, obtain corrosion-resistant physics and chemistry film;
S3, preparation high strength physics and chemistry plate: the corrosion-resistant physics and chemistry film that S2 is obtained is bonded in by PMDI modified urea-formaldehyde resin adhesive the substrate surface that S1 obtains, and then in cold press, carries out cold treatment and obtains high strength physics and chemistry plate.
Embodiment 3
The preparation method of a kind of high strength physics and chemistry plate that the present embodiment proposes, comprises the steps:
S1, prepare base material: according to percentage by weight, take following raw material: 45% wood fibre, 48.5%PMDI modified urea-formaldehyde resin adhesive, 4.12% curing agent and 2.38% buffer, to pulverize, wood fibre after grinding is sent in drier and is dried, baking temperature is 190 ℃, be dried to fiber moisture below 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, curing agent and buffer mix, in batch mixing being sent into mould after mixed glue completes, mat formation and place 32min, after having mated formation, then send into and in hot press, carry out hot pressing, the operating air pressure of hot pressing is 7kg/cm
2, hot pressing temperature is 200 ℃, carries out moulding and be cooled to room temperature after hot pressing completes, and obtains base material,
S2, prepare corrosion-resistant physics and chemistry film: according to percentage by weight, take following raw material: bisphenol f type epoxy resin 25%, polytetrafluoroethylene (PTFE) 14%, ceramic powder 38%, phenolic resins 15%, strengthen resin 3% and titanium dioxide 5%, after bisphenol f type epoxy resin, polytetrafluoroethylene (PTFE), ceramic powder, phenolic resins, enhancing resin, titanium dioxide are mixed, by flush coater, spray on Colored Paper, obtain corrosion-resistant physics and chemistry film;
S3, preparation high strength physics and chemistry plate: the corrosion-resistant physics and chemistry film that S2 is obtained is bonded in by PMDI modified urea-formaldehyde resin adhesive the substrate surface that S1 obtains, and then in cold press, carries out cold treatment and obtains high strength physics and chemistry plate.
Embodiment 4
The preparation method of a kind of high strength physics and chemistry plate that the present embodiment proposes, comprises the steps:
S1, prepare base material: according to percentage by weight, take following raw material: 46.08% wood fibre, 48%PMDI modified urea-formaldehyde resin adhesive, 3.62% curing agent and 2.3% buffer, to pulverize, wood fibre after grinding is sent in drier and is dried, baking temperature is 190 ℃, be dried to fiber moisture below 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, curing agent and buffer mix, in batch mixing being sent into mould after mixed glue completes, mat formation and place 30min, after having mated formation, then send into and in hot press, carry out hot pressing, the operating air pressure of hot pressing is 7kg/cm
2, hot pressing temperature is 220 ℃, carries out moulding and be cooled to room temperature after hot pressing completes, and obtains base material,
S2, prepare corrosion-resistant physics and chemistry film: according to percentage by weight, take following raw material: bisphenol f type epoxy resin 28%, polytetrafluoroethylene (PTFE) 15%, ceramic powder 38%, phenolic resins 13%, strengthen resin 2% and titanium dioxide 4%, after bisphenol f type epoxy resin, polytetrafluoroethylene (PTFE), ceramic powder, phenolic resins, enhancing resin, titanium dioxide are mixed, by flush coater, spray on Colored Paper, obtain corrosion-resistant physics and chemistry film;
S3, preparation high strength physics and chemistry plate: the corrosion-resistant physics and chemistry film that S2 is obtained is bonded in by PMDI modified urea-formaldehyde resin adhesive the substrate surface that S1 obtains, and then in cold press, carries out cold treatment and obtains high strength physics and chemistry plate.
In embodiment 1-4, corrosion-resistant physics and chemistry film is used not solvent-laden coating, and bisphenol f type epoxy resin, enhancing resin and ceramic powder share and rationally control the proportioning of three in raw material, coordinate and add appropriate polytetrafluoroethylene (PTFE), the coefficient of friction of polytetrafluoroethylene (PTFE) is little, lubrication is obvious, can make each component in raw material mix, after said components acting in conjunction, the antiacid alkali resistance of goods is good, and be dissolved in hardly all solvents, decay resistance, high temperature resistant enhancing greatly, and sealing, electrical insulating property and ageing resistance also have obvious raising; Ceramic powder density is little, lightweight, the impact of being expanded with heat and contract with cold is less than steel, can in the comparatively violent environment of difference variation, work, it is high temperature resistant, corrosion-resistant and anti-wear performance is more excellent, ceramic powder and titanium dioxide are used in conjunction with the performance that can significantly improve corrosion-resistant physics and chemistry film, and anti-aging and strengthening action are more obvious, and the use cost of reduction material that can be by a relatively large margin; Because corrosion-resistant physics and chemistry film contains phenolic resins and PMDI modified urea-formaldehyde resin adhesive, so use the bonding corrosion-resistant physics and chemistry film of MDI modified urea-formaldehyde resin adhesive and base material, jointing material is consistent, cohesive force is stronger, because the cohesive force of phenolic resins is more excellent and good with various compatibilities organic and inorganic filler, with PMDI modified urea-formaldehyde resin adhesive immixture and rationally control proportioning, the cementation power of corrosion-resistant physics and chemistry film and base material is extremely strong, adhesion strength is high, and cost is lower; In the present invention, high temperature resistant, the wear-resisting and decay resistance of above-mentioned high strength physics and chemistry plate is all better than national standard, and preparation technology is simple, and cost is lower.
In the present invention, high temperature resistant, the wear-resisting and decay resistance of above-mentioned high strength physics and chemistry plate is all better than national standard, and preparation technology is simple, and cost is lower.
It should be noted that; in the present invention; the order of preparation of corrosion-resistant physics and chemistry film and base material not being prepared to two steps limits; can to the order of above-mentioned two steps, adjust according to the convenience of arrangement of time; those skilled in the art are not paying on the basis of creative work; the technical scheme that the arrangement adjustment of above-mentioned two steps is obtained, all should be within protection scope of the present invention.
The above; it is only the preferably specific embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; according to technical scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (4)
1. a preparation method for high strength physics and chemistry plate, is characterized in that, comprises the steps:
S1, prepare base material: according to percentage by weight, take following raw material: 45-48% wood fibre, 46-49%PMDI modified urea-formaldehyde resin adhesive, 3-4.2% curing agent and 2-3% buffer, to pulverize, wood fibre after grinding is sent in drier and is dried, baking temperature is 180-200 ℃, be dried to fiber moisture below 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, curing agent and buffer mix, in batch mixing being sent into mould after mixed glue completes, mat formation and place 25-32min, after having mated formation, then send into and in hot press, carry out hot pressing, the operating air pressure of hot pressing is 6-8kg/cm
2, hot pressing temperature is 200-240 ℃, carries out moulding and be cooled to room temperature after hot pressing completes, and obtains base material,
S2, prepare corrosion-resistant physics and chemistry film: according to percentage by weight, take following raw material: bisphenol f type epoxy resin 25-30%, polytetrafluoroethylene (PTFE) 14-17%, ceramic powder 35-40%, phenolic resins 10-15%, strengthen resin 1-4%, titanium dioxide 2-5%, after bisphenol f type epoxy resin, polytetrafluoroethylene (PTFE), ceramic powder, phenolic resins, enhancing resin, titanium dioxide are mixed, by flush coater, spray on Colored Paper, obtain corrosion-resistant physics and chemistry film;
S3, preparation high strength physics and chemistry plate: the corrosion-resistant physics and chemistry film that S2 is obtained is bonded in by PMDI modified urea-formaldehyde resin adhesive the substrate surface that S1 obtains, and then in cold press, carries out cold treatment and obtains high strength physics and chemistry plate.
2. the preparation method of high strength physics and chemistry plate according to claim 1, is characterized in that, the raw materials by weight of described base material is: 45-47% wood fibre, 47-49%PMDI modified urea-formaldehyde resin adhesive, 3.5-3.7% curing agent and 2-3% buffer; Described baking temperature is controlled at 185-190 ℃, places 27-30min in pavement process, and the operating air pressure of hot pressing is 7-8kg/cm
2, hot pressing temperature is 215-225 ℃.
3. the preparation method of high strength physics and chemistry plate according to claim 1, it is characterized in that, the raw materials by weight of described corrosion-resistant physics and chemistry film is: bisphenol f type epoxy resin 27-30%, polytetrafluoroethylene (PTFE) 14-16%, ceramic powder 36-39%, phenolic resins 12-14%, strengthens resin 1-3%, titanium dioxide 3-4%.
4. the preparation method of high strength physics and chemistry plate according to claim 3, is characterized in that, the raw materials by weight of described corrosion-resistant physics and chemistry film comprises: bisphenol f type epoxy resin 28%, polytetrafluoroethylene (PTFE) 15%, ceramic powder 38%, phenolic resins 13%, strengthen resin 2%, titanium dioxide 4%.
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| CN104553220A (en) * | 2015-02-10 | 2015-04-29 | 安徽希玛欧美佳装饰材料工业有限公司 | Corrosion-resistant physicochemical plate for laboratories |
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| CN104647561A (en) * | 2015-03-23 | 2015-05-27 | 南京林业大学 | High surface density fiberboard and manufacturing method thereof |
| CN105440573A (en) * | 2015-12-17 | 2016-03-30 | 安徽华盛科技控股股份有限公司 | Anti-corrosion high-temperature-resistant chemical-resistant laminate special for CIT laboratory |
| CN105504669A (en) * | 2015-12-17 | 2016-04-20 | 安徽华盛科技控股股份有限公司 | Heatproof and fireproof physicochemical plate used in CIT experiment |
| CN108407052A (en) * | 2018-04-20 | 2018-08-17 | 佛山汇众森泰科技有限公司 | A kind of anti-aging Ceramic manufacturing method |
| CN108915131A (en) * | 2018-07-04 | 2018-11-30 | 安徽省浦菲尔建材有限公司 | A kind of processing technology of high-intensitive outdoor curtain wall panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104589713B (en) * | 2015-02-10 | 2017-11-17 | 安徽希玛欧美佳装饰材料工业有限公司 | A kind of corrosion-resistant heat-resisting physics and chemistry plate |
| CN104553220B (en) * | 2015-02-10 | 2017-11-17 | 安徽希玛欧美佳装饰材料工业有限公司 | A kind of corrosion-resistant physics and chemistry plate of use for laboratory |
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| CN105504669A (en) * | 2015-12-17 | 2016-04-20 | 安徽华盛科技控股股份有限公司 | Heatproof and fireproof physicochemical plate used in CIT experiment |
| CN108407052A (en) * | 2018-04-20 | 2018-08-17 | 佛山汇众森泰科技有限公司 | A kind of anti-aging Ceramic manufacturing method |
| CN108915131A (en) * | 2018-07-04 | 2018-11-30 | 安徽省浦菲尔建材有限公司 | A kind of processing technology of high-intensitive outdoor curtain wall panel |
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