CN103991122B - The preparation method of high intensity physics and chemistry plate - Google Patents
The preparation method of high intensity physics and chemistry plate Download PDFInfo
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- CN103991122B CN103991122B CN201410140968.4A CN201410140968A CN103991122B CN 103991122 B CN103991122 B CN 103991122B CN 201410140968 A CN201410140968 A CN 201410140968A CN 103991122 B CN103991122 B CN 103991122B
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Abstract
The invention discloses the preparation method of a kind of high intensity physics and chemistry plate, comprise the steps: to weigh wood fibre, modified urea-formaldehyde resin adhesive, firming agent and buffer agent, wood fibre is sent in desiccant and be dried to fiber moisture below 5%, it is subsequently adding PMDI modified urea-formaldehyde resin adhesive, firming agent and buffer agent mix homogeneously, after mixed glue completes, batch mixing is sent in mould and mat formation, it is then fed in hot press carrying out hot pressing, molding, is cooled to room temperature and obtains base material；Spray on Colored Paper, obtain corrosion-resistant physics and chemistry film by flush coater after weighing bisphenol f type epoxy resin, politef, ceramics, phenolic resin, enhancing resin and titanium dioxide mix homogeneously；By PMDI modified urea-formaldehyde resin adhesive, corrosion-resistant physics and chemistry film is bonded in substrate surface, and cold treatment obtains high intensity physics and chemistry plate.In the present invention, described high intensity physics and chemistry plate is corrosion-resistant, high temperature resistant, wear-resisting, and preparation technology is simple.
Description
Technical field
The present invention relates to physics and chemistry plate technique field, particularly relate to the preparation method of a kind of high intensity physics and chemistry plate.
Background technology
Along with developing rapidly of science and technology, various laboratorys get more and more, and the laboratory complete set of equipments of needs also can
It is gradually increased；And physics and chemistry plate to have the performances such as wear-resisting, corrosion-resistant and high temperature resistant as requisite material,
High intensity physics and chemistry plate corrosion-resistant prepared by some traditional production technologies, service life is short, it is impossible to meet
The requirement of laboratory table top material.Accordingly, it would be desirable to develop a kind of corrosion-resistant excellence to be suitable for the physics and chemistry of existing market
Plate is to meet the requirements at the higher level of client.
Summary of the invention
The present invention proposes high intensity physics and chemistry plate and preparation method thereof, and described high intensity physics and chemistry plate is high temperature resistant, resistance to
Mill performance is good, and excellent anti-corrosion performance, service life is long, and preparation technology is simple.
The preparation method of a kind of high intensity physics and chemistry plate that the present invention proposes, comprises the steps:
S1, prepare base material: weigh following raw material according to percentage by weight: 45-48% wood fibre, 46-49%PMDI
Modified urea-formaldehyde resin adhesive, 3-4.2% firming agent and 2-3% buffer agent, will pulverize, grind after wooden
Fiber is sent in desiccant and is dried, and baking temperature is 180-200 DEG C, is dried to fiber moisture and exists
Less than 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, firming agent
And buffer agent mix homogeneously, after mixed glue completes, batch mixing is sent into and mould is mated formation and places
25-32min, is then fed in hot press carrying out hot pressing having mated formation afterwards, and the operating air pressure of hot pressing is
6-8kg/cm2, hot pressing temperature is 200-240 DEG C, completes be shaped afterwards and be cooled to room temperature in hot pressing,
Obtain base material；
S2, prepare corrosion-resistant physics and chemistry film: weigh following raw material according to percentage by weight: bisphenol F type epoxy tree
Fat 25-30%, politef 14-17%, ceramics 35-40%, phenolic resin 10-15%, enhancing resin
1-4%, titanium dioxide 2-5%, by bisphenol f type epoxy resin, politef, ceramics, phenolic resin,
Spray on Colored Paper by flush coater after strengthening resin, titanium dioxide mix homogeneously, obtain corrosion-resistant physics and chemistry
Film；
S3, preparation high intensity physics and chemistry plate: the corrosion-resistant physics and chemistry film obtained by S2 is by PMDI modified urea-formaldehyde tree
The substrate surface that fat adhesive bond obtains at S1, then carries out cold treatment in cold press and obtains high intensity reason
Change plate.
In a 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%, firming agent can be 3%, 3.5%, 3.68%, 3.8%, 4%,
4.2%, buffer agent can be 2%, 2.3%, 2.5%, 2.8%, 2.9%, 3%；In S2, percentage by weight
Ratio, bisphenol f type epoxy resin can be 25%, 26%, 27%, 28%, 30%, and politef can be
14%, 15%, 16%, 17%, ceramics can be 35%, 36%, 38%, 39%, 40%, and phenolic resin is permissible
Being 10%, 12%, 13%, 14%, 15%, strengthening resin can be 1%, 2%, 3%, 4%, and titanium dioxide is permissible
It is 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% firming agent and 2-3% buffer agent；Described baking temperature controls
185-190 DEG C, placing 27-30min in pavement process, the operating air pressure of hot pressing is 7-8kg/cm2, hot pressing
Temperature is 215-225 DEG C.
Preferably, the raw materials by weight of described corrosion-resistant physics and chemistry film is: bisphenol f type epoxy resin
27-30%, politef 14-16%, ceramics 36-39%, phenolic resin 12-14%, strengthen resin 1-3%,
Titanium dioxide 3-4%.
Preferably, the raw materials by weight of described corrosion-resistant physics and chemistry film includes: bisphenol f type epoxy resin
28%, politef 15%, ceramics 38%, phenolic resin 13%, strengthen resin 2%, titanium dioxide 4%.
In the present invention, described corrosion-resistant physics and chemistry film uses the most solvent-laden coating, and bisphenol F type epoxy tree
Fat, enhancing resin and ceramics share and conservative control three proportioning in the feed, coordinate interpolation appropriate
Politef, the coefficient of friction of politef is little, and lubrication is obvious, and each component in raw material can be made to mix
Closing uniformly, after said components acts on jointly, the antiacid alkali resistance of goods is good, and is practically insoluble in all of molten
Agent, decay resistance, high temperature resistant is greatly enhanced, and sealing, electrical insulating property and ageing resistance also have relatively
Significantly improve；Ceramics density is little, lightweight, is affected less than steel by expanding with heat and contract with cold, and can become in the temperature difference
Changing in the most violent environment and work, it is high temperature resistant, corrosion-resistant and anti-wear performance is more excellent, ceramics and titanium
White lead is with the use of significantly improving the performance of corrosion-resistant physics and chemistry film, and anti-aging and strengthening action are more apparent, and
Can by a relatively large margin reduce material use cost；Because corrosion-resistant physics and chemistry film contains phenolic resin and PMDI modification
Urea-formaldehyde resin adhesive, so using MDI modified urea-formaldehyde resin adhesive to bond corrosion-resistant physics and chemistry film and base material,
Jointing material keeps consistent, and cohesive force is relatively strong, because the cohesive force of phenolic resin is more excellent and organic with various
And the compatibility of inorganic filler is good, and PMDI modified urea-formaldehyde resin adhesive immixture conservative control proportioning,
Corrosion-resistant physics and chemistry film is extremely strong with the cementation power of base material, and adhesion strength is high, and cost is relatively low；In the present invention,
High temperature resistant, the wear-resisting and decay resistance of above-mentioned high intensity physics and chemistry plate is superior to national standard, preparation technology letter
Single, cost is relatively low.
Accompanying drawing explanation
Fig. 1 is the preparation technology flow chart of a kind of high intensity physics and chemistry plate that the present invention proposes.
Detailed description of the invention
As it is shown in figure 1, the preparation technology flow chart of a kind of high intensity physics and chemistry plate that Fig. 1 is the present invention to be proposed.
With reference to Fig. 1, the preparation method of a kind of high intensity physics and chemistry plate that the present invention proposes, comprise the steps:
S1, prepare base material: weigh following raw material according to percentage by weight: 45-48% wood fibre, 46-49%PMDI
Modified urea-formaldehyde resin adhesive, 3-4.2% firming agent and 2-3% buffer agent, will pulverize, grind after wooden
Fiber is sent in desiccant and is dried, and baking temperature is 180-200 DEG C, is dried to fiber moisture and exists
Less than 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, firming agent
And buffer agent mix homogeneously, after mixed glue completes, batch mixing is sent into and mould is mated formation and places
25-32min, is then fed in hot press carrying out hot pressing having mated formation afterwards, and the operating air pressure of hot pressing is
6-8kg/cm2, hot pressing temperature is 200-240 DEG C, completes be shaped afterwards and be cooled to room temperature in hot pressing,
Obtain base material；
S2, prepare corrosion-resistant physics and chemistry film: weigh following raw material according to percentage by weight: bisphenol F type epoxy tree
Fat 25-30%, politef 14-17%, ceramics 35-40%, phenolic resin 10-15%, enhancing resin
1-4%, titanium dioxide 2-5%, by bisphenol f type epoxy resin, politef, ceramics, phenolic resin,
Spray on Colored Paper by flush coater after strengthening resin, titanium dioxide mix homogeneously, obtain corrosion-resistant physics and chemistry
Film；
S3, preparation high intensity physics and chemistry plate: the corrosion-resistant physics and chemistry film obtained by S2 is by PMDI modified urea-formaldehyde tree
The substrate surface that fat adhesive bond obtains at S1, then carries out cold treatment in cold press and obtains high intensity reason
Change plate.
Embodiment 1
The preparation method of a kind of high intensity physics and chemistry plate that the present embodiment proposes, comprises the steps:
S1, prepare base material: weigh following raw material according to percentage by weight: 46.5% wood fibre, 47.3%PMDI
Modified urea-formaldehyde resin adhesive, 3.7% firming agent and 2.5% buffer agent, the wooden fibre after pulverizing, grind
Dimension is sent in desiccant and is dried, and baking temperature is 200 DEG C, is dried to fiber moisture below 5%,
In wood fibre, PMDI modified urea-formaldehyde resin adhesive, firming agent and buffer agent is added after being dried
Mix homogeneously, sends into batch mixing in mould after mixed glue completes and carries out mating formation and placing 30min, mating formation
Being then fed in hot press carrying out hot pressing after one-tenth, the operating air pressure of hot pressing is 6kg/cm2, hot pressing temperature is
240 DEG C, complete be shaped afterwards and be cooled to room temperature in hot pressing, obtain base material；
S2, prepare corrosion-resistant physics and chemistry film: weigh following raw material according to percentage by weight: bisphenol F type epoxy tree
Fat 30%, politef 17%, ceramics 37%, phenolic resin 10%, enhancing resin 4%, titanium dioxide 2%,
Bisphenol f type epoxy resin, politef, ceramics, phenolic resin, enhancing resin, titanium dioxide are mixed
Spray on Colored Paper by flush coater after closing uniformly, obtain corrosion-resistant physics and chemistry film；
S3, preparation high intensity physics and chemistry plate: the corrosion-resistant physics and chemistry film obtained by S2 is by PMDI modified urea-formaldehyde tree
The substrate surface that fat adhesive bond obtains at S1, then carries out cold treatment in cold press and obtains high intensity reason
Change plate.
Embodiment 2
The preparation method of a kind of high intensity physics and chemistry plate that the present embodiment proposes, comprises the steps:
S1, prepare base material: weigh following raw material according to percentage by weight: 47% wood fibre, 47%PMDI change
Property urea-formaldehyde resin adhesive, 4% firming agent and 2% buffer agent, will pulverize, grind after wood fibre send into
Being dried in desiccant, baking temperature is 180 DEG C, is dried to fiber moisture below 5%, dry
Dry complete after in wood fibre add PMDI modified urea-formaldehyde resin adhesive, firming agent and buffer agent mixing
Uniformly, batch mixing is sent in mould after mixed glue completes and carry out mating formation and placing 25min, mating formation it
After be then fed in hot press carrying out hot pressing, the operating air pressure of hot pressing is 8kg/cm2, hot pressing temperature is 220 DEG C,
Complete be shaped afterwards and be cooled to room temperature in hot pressing, obtain base material；
S2, prepare corrosion-resistant physics and chemistry film: weigh following raw material according to percentage by weight: bisphenol F type epoxy tree
Fat 29%, politef 17%, ceramics 36%, phenolic resin 13%, enhancing resin 1% and titanium dioxide 4%,
Bisphenol f type epoxy resin, politef, ceramics, phenolic resin, enhancing resin, titanium dioxide are mixed
Spray on Colored Paper by flush coater after closing uniformly, obtain corrosion-resistant physics and chemistry film；
S3, preparation high intensity physics and chemistry plate: the corrosion-resistant physics and chemistry film obtained by S2 is by PMDI modified urea-formaldehyde tree
The substrate surface that fat adhesive bond obtains at S1, then carries out cold treatment in cold press and obtains high intensity reason
Change plate.
Embodiment 3
The preparation method of a kind of high intensity physics and chemistry plate that the present embodiment proposes, comprises the steps:
S1, prepare base material: weigh following raw material according to percentage by weight: 45% wood fibre, 48.5%PMDI
Modified urea-formaldehyde resin adhesive, 4.12% firming agent and 2.38% buffer agent, will pulverize, grind after wooden
Fiber is sent in desiccant and is dried, and baking temperature is 190 DEG C, be dried to fiber moisture 5% with
Under, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, firming agent and delay
Electuary mix homogeneously, sends into batch mixing in mould after mixed glue completes and carries out mating formation and placing 32min, paving
Installing into and be then fed into afterwards in hot press carrying out hot pressing, the operating air pressure of hot pressing is 7kg/cm2, hot pressing temperature
It is 200 DEG C, completes be shaped afterwards and be cooled to room temperature in hot pressing, obtain base material；
S2, prepare corrosion-resistant physics and chemistry film: weigh following raw material according to percentage by weight: bisphenol F type epoxy tree
Fat 25%, politef 14%, ceramics 38%, phenolic resin 15%, enhancing resin 3% and titanium dioxide 5%,
Bisphenol f type epoxy resin, politef, ceramics, phenolic resin, enhancing resin, titanium dioxide are mixed
Spray on Colored Paper by flush coater after closing uniformly, obtain corrosion-resistant physics and chemistry film；
S3, preparation high intensity physics and chemistry plate: the corrosion-resistant physics and chemistry film obtained by S2 is by PMDI modified urea-formaldehyde tree
The substrate surface that fat adhesive bond obtains at S1, then carries out cold treatment in cold press and obtains high intensity reason
Change plate.
Embodiment 4
The preparation method of a kind of high intensity physics and chemistry plate that the present embodiment proposes, comprises the steps:
S1, prepare base material: weigh following raw material according to percentage by weight: 46.08% wood fibre, 48%PMDI
Modified urea-formaldehyde resin adhesive, 3.62% firming agent and 2.3% buffer agent, the wooden fibre after pulverizing, grind
Dimension is sent in desiccant and is dried, and baking temperature is 190 DEG C, is dried to fiber moisture below 5%,
In wood fibre, PMDI modified urea-formaldehyde resin adhesive, firming agent and buffer agent is added after being dried
Mix homogeneously, sends into batch mixing in mould after mixed glue completes and carries out mating formation and placing 30min, mating formation
Being then fed in hot press carrying out hot pressing after one-tenth, the operating air pressure of hot pressing is 7kg/cm2, hot pressing temperature is
220 DEG C, complete be shaped afterwards and be cooled to room temperature in hot pressing, obtain base material；
S2, prepare corrosion-resistant physics and chemistry film: weigh following raw material according to percentage by weight: bisphenol F type epoxy tree
Fat 28%, politef 15%, ceramics 38%, phenolic resin 13%, enhancing resin 2% and titanium dioxide 4%,
Bisphenol f type epoxy resin, politef, ceramics, phenolic resin, enhancing resin, titanium dioxide are mixed
Spray on Colored Paper by flush coater after closing uniformly, obtain corrosion-resistant physics and chemistry film；
S3, preparation high intensity physics and chemistry plate: the corrosion-resistant physics and chemistry film obtained by S2 is by PMDI modified urea-formaldehyde tree
The substrate surface that fat adhesive bond obtains at S1, then carries out cold treatment in cold press and obtains high intensity reason
Change plate.
In embodiment 1-4, corrosion-resistant physics and chemistry film uses the most solvent-laden coating, and bisphenol F type epoxy
Resin, enhancing resin and ceramics share and conservative control three proportioning in the feed, coordinate and add in right amount
Politef, the coefficient of friction of politef is little, and lubrication is obvious, can make each component in raw material
Mix homogeneously, after said components acts on jointly, the antiacid alkali resistance of goods is good, and is practically insoluble in all of
Solvent, decay resistance, high temperature resistant is greatly enhanced, and sealing, electrical insulating property and ageing resistance also have
Significantly improve；Ceramics density is little, lightweight, is affected less than steel by expanding with heat and contract with cold, can be in the temperature difference
Changing in the most violent environment and work, it is high temperature resistant, corrosion-resistant and anti-wear performance is more excellent, ceramics with
Titanium dioxide is with the use of significantly improving the performance of corrosion-resistant physics and chemistry film, and anti-aging and strengthening action are more apparent,
And can by a relatively large margin reduce material use cost；Change with PMDI because corrosion-resistant physics and chemistry film contains phenolic resin
Property urea-formaldehyde resin adhesive, so using MDI modified urea-formaldehyde resin adhesive to bond corrosion-resistant physics and chemistry film and base
Material, jointing material keeps consistent, and cohesive force is relatively strong, because the cohesive force of phenolic resin is more excellent and with various
Organic and inorganic filler compatibility is good, with PMDI modified urea-formaldehyde resin adhesive immixture conservative control
Proportioning, corrosion-resistant physics and chemistry film is extremely strong with the cementation power of base material, and adhesion strength is high, and cost is relatively low；This
In bright, high temperature resistant, the wear-resisting and decay resistance of above-mentioned high intensity physics and chemistry plate is superior to national standard, preparation
Technique is simple, and cost is relatively low.
In the present invention, high temperature resistant, the wear-resisting and decay resistance of above-mentioned high intensity physics and chemistry plate is superior to country's mark
Standard, preparation technology is simple, and cost is relatively low.
It should be noted that in the present invention, preparation and base material to corrosion-resistant physics and chemistry film do not prepare two
The order of step is defined, and can carry out the order of above-mentioned two step according to the convenience of arrangement of time
Adjust, those skilled in the art's arrangement on the basis of not paying creative work, to above-mentioned two step
Adjust the technical scheme obtained, all should be within protection scope of the present invention.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office
Being limited to this, any those familiar with the art is in the technical scope that the invention discloses, according to this
The technical scheme of invention and inventive concept thereof in addition equivalent or change, all should contain the protection in the present invention
Within the scope of.
Claims (4)
1. the preparation method of a high intensity physics and chemistry plate, it is characterised in that comprise the steps:
S1, prepare base material: weigh following raw material according to percentage by weight: 45-48% wood fibre, 46-49%PMDI
Modified urea-formaldehyde resin adhesive, 3-4.2% firming agent and 2-3% buffer agent, will pulverize, grind after wooden
Fiber is sent in desiccant and is dried, and baking temperature is 180-190 DEG C, is dried to fiber moisture and exists
Less than 5%, after being dried, in wood fibre, add PMDI modified urea-formaldehyde resin adhesive, firming agent
And buffer agent mix homogeneously, after mixed glue completes, batch mixing is sent into and mould is mated formation and places
25-32min, is then fed in hot press carrying out hot pressing having mated formation afterwards, and the operating air pressure of hot pressing is
7-8kg/cm2, hot pressing temperature is 215-240 DEG C, completes be shaped afterwards and be cooled to room temperature in hot pressing,
Obtain base material；
S2, prepare corrosion-resistant physics and chemistry film: weigh following raw material according to percentage by weight: bisphenol F type epoxy tree
Fat 25-28%, politef 14-17%, ceramics 36-40%, phenolic resin 10-14%, enhancing resin
1-4%, titanium dioxide 2-4%, by bisphenol f type epoxy resin, politef, ceramics, phenolic resin,
Spray on Colored Paper by flush coater after strengthening resin, titanium dioxide mix homogeneously, obtain corrosion-resistant physics and chemistry
Film；
S3, preparation high intensity physics and chemistry plate: the corrosion-resistant physics and chemistry film obtained by S2 is by PMDI modified urea-formaldehyde tree
The substrate surface that fat adhesive bond obtains at S1, then carries out cold treatment in cold press and obtains high intensity reason
Change plate.
The preparation method of high intensity physics and chemistry plate the most according to claim 1, it is characterised in that described base
The raw materials by weight of material is: 45-47% wood fibre, 47-49%PMDI modified urea-formaldehyde resin adhesive,
3.5-3.7% firming agent and 2-3% buffer agent；Described baking temperature controls at 185-190 DEG C, in pavement process
Middle placement 27-30min, the operating air pressure of hot pressing is 7-8kg/cm2, hot pressing temperature is 215-225 DEG C.
The preparation method of high intensity physics and chemistry plate the most according to claim 1, it is characterised in that described resistance to
The raw materials by weight of corrosion physics and chemistry film is: bisphenol f type epoxy resin 27-28%, politef
14-16%, ceramics 36-39%, phenolic resin 12-14%, strengthen resin 1-3%, titanium dioxide 3-4%.
The preparation method of high intensity physics and chemistry plate the most according to claim 3, it is characterised in that described resistance to
The raw materials by weight of corrosion physics and chemistry film includes: bisphenol f type epoxy resin 28%, politef 15%,
Ceramics 38%, phenolic resin 13%, strengthen resin 2%, titanium dioxide 4%.
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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 |
| CN104647561B (en) * | 2015-03-23 | 2016-08-24 | 南京林业大学 | High area density fibre board and manufacture method thereof |
| 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 |
| 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 |
| 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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| C06 | Publication | ||
| PB01 | Publication | ||
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