CN104589713A - Corrosion resistant and heat resistant physiochemical board - Google Patents
Corrosion resistant and heat resistant physiochemical board Download PDFInfo
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- CN104589713A CN104589713A CN201510070610.3A CN201510070610A CN104589713A CN 104589713 A CN104589713 A CN 104589713A CN 201510070610 A CN201510070610 A CN 201510070610A CN 104589713 A CN104589713 A CN 104589713A
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Abstract
The invention discloses a corrosion resistant and heat resistant physiochemical board comprising the following components in parts by weight: 80-90 parts of physiochemical base material, 4-8 parts of physiochemical film and 0.6-0.9 part of adhesive, and the physiochemical base material is adhered with the physiochemical film by the adhesive; the physiochemical base material comprises the following raw materials in parts by weight: 50-60 parts of wood fiber, 30-40 parts of modified phenolic resin, 2-4 parts of a curing agent and 1-2 parts of a buffering agent; the physiochemical film comprises the following raw materials in parts by weight: 30-50 parts of vinyl ester resin, 5-10 parts of dimethyldiethoxysilane, 20-30 parts of phenolic resin, 1-3 parts of alumina fiber, 35-40 parts of kaolin and 1-2 parts of titanium dioxide. The corrosion resistant and heat resistant physiochemical board disclosed by the invention has the advantages of low cost, excellent corrosion resistance and heat resistance and long service life.
Description
Technical field
The present invention relates to physics and chemistry plate technique field, particularly relate to a kind of corrosion-resistant heat-resisting physics and chemistry plate.
Background technology
Along with current laboratory equipment increases gradually, use for laboratory physics and chemistry plate obtains applying more and more widely as requisite material, phenolic resins is because having high, water-fast, heat-resisting, the wear-resisting and good chemical stability of adhesion strength and being widely used in physics and chemistry board industry, but the shortcomings such as its cost is higher, solidification temperature is high and hardening time is long, current physics and chemistry plate corrosion resistance, heat-resisting and more and more cannot meet the need of market service life.
Summary of the invention
The present invention proposes a kind of corrosion-resistant heat-resisting physics and chemistry plate, long service life, heat-resisting, excellent anti-corrosion performance.
The corrosion-resistant heat-resisting physics and chemistry plate of one that the present invention proposes, comprise by weight: 80-90 part physics and chemistry base material, 4-8 part physics and chemistry film and 0.6-0.9 part adhesive, physics and chemistry base material and physics and chemistry film are bonded by adhesive;
The raw material of physics and chemistry base material comprises by weight: wood fibre 50-60 part, phenol-formaldehyde resin modified 30-40 part, curing agent 2-4 part, buffer 1-2 part;
The raw material of physics and chemistry film comprises by weight: vinyl ester resin 30-50 part, dimethyldiethoxysilane 5-10 part, phenolic resins 20-30 part, alumina fibre 1-3 part, kaolin 35-40 part, titanium dioxide 1-2 part;
In the preparation process of phenol-formaldehyde resin modified, Wheat Straw Lignin from Alkali Pulping, formaldehyde and NaOH to be sent in reactor after mixing, continue to add NaOH, then centrifugally obtain solid material; Solid material is added in hydrochloric acid solution and precipitates, after centrifugal, spend deionized water to neutral, dry and obtain prefabricated material; Prefabricated material is sent in reactor, then add NaOH, water mixes, and heats up and is incubated, and adds phenol, formaldehyde after cooling, then heats up and is incubated, then adding formaldehyde to material viscosity is 0.15-0.18Pas, cools and obtains phenol-formaldehyde resin modified.
Preferably, in the preparation process of phenol-formaldehyde resin modified, by weight 60-75 part Wheat Straw Lignin from Alkali Pulping, 15-20 part formaldehyde and 1-3 part NaOH are sent into hybrid reaction 40-60min in reactor, reaction temperature is 55-65 DEG C, continue to add 1.5-3 part NaOH reaction 30-40min, reaction temperature is 70-75 DEG C, then centrifugally obtains solid material; Solid material being added pH value is precipitate in the hydrochloric acid solution of 2-2.5, after centrifugal, spend deionized water to neutral, dries and obtain prefabricated material; Prefabricated material is sent in reactor, then add 2-4 part NaOH, 15-30 part water mixes, be warming up to 78-85 DEG C, insulation 30-50min, adds 22-28 part phenol reactant 20-40min, adds 8-13 part formolite reaction 20-30min after being cooled to 40-50 DEG C, 85-95 DEG C is warmed up to the speed of 1-3 DEG C/min, insulation 50-60min, adding 4-7 part formolite reaction to material viscosity is 0.15-0.18Pas, and cooling obtains phenol-formaldehyde resin modified.
Preferably, adhesive is phenol-formaldehyde resin modified.
Preferably, the weight ratio of physics and chemistry base material, physics and chemistry film and adhesive is 84-88:4-6:0.6-0.8.
Preferably, in physics and chemistry base material, the weight ratio of wood fibre and phenol-formaldehyde resin modified is 54-58:32-36.
Preferably, the raw material of physics and chemistry base material comprises by weight: wood fibre 54-58 part, phenol-formaldehyde resin modified 32-36 part, curing agent 2.5-3 part, buffer 1.2-1.6 part.
Preferably, in physics and chemistry film, the weight ratio of vinyl ester resin, dimethyldiethoxysilane and phenolic resins is 35-39:6-8:24-26.
Preferably, the raw material of physics and chemistry film comprises by weight: vinyl ester resin 35-39 part, dimethyldiethoxysilane 6-8 part, phenolic resins 24-26 part, alumina fibre 1.5-2 part, kaolin 36-38 part, titanium dioxide 1.2-1.5 part.
The preparation technology of the corrosion-resistant heat-resisting physics and chemistry plate that the present invention proposes is: sent into by wood fibre in drier and be dried to moisture below 5%, add phenol-formaldehyde resin modified, curing agent and buffer to mix, send in mould and carry out mating formation and placing 25-32min, send into hot pressing in hot press, the operating air pressure of hot pressing is 6-8kg/cm
2, hot pressing temperature is 200-240 DEG C, shaping and be cooled to room temperature and obtain physics and chemistry base material; Spray on Colored Paper by flush coater after vinyl ester resin, dimethyldiethoxysilane, kaolin, phenolic resins, alumina fibre, titanium dioxide are mixed, obtain physics and chemistry film; By physics and chemistry film by adhesive bond at physics and chemistry substrate surface, in cold press, cold treatment obtains corrosion-resistant heat-resisting physics and chemistry plate.
The present invention adopts modified phenolic resin adhesive to bond corrosion-resistant physics and chemistry film and base material, and jointing material is consistent, and cohesive force is stronger, because the cohesive force of phenol-formaldehyde resin modified is more excellent, good with the compatibility of unclassified stores, the cohesive force of physics and chemistry film and physics and chemistry base material is strong, and adhesion strength is high, wherein in the preparation process of phenol-formaldehyde resin modified, Wheat Straw Lignin from Alkali Pulping is the accessory substance that paper-making pulping process produces, cheap, abundance, but Wheat Straw Lignin from Alkali Pulping is owing to having tridimensional network, a large amount of active groups is wrapped in intramolecule, its chemical reactivity is low, the alkali activation of Wheat Straw Lignin from Alkali Pulping and methylolation are conducive to improving its chemical reactivity, the solidification temperature of phenol-formaldehyde resin modified is 140-150 DEG C, overcome the shortcoming that phenolic resin curing temperature is high, and cost of material is low, phenol-formaldehyde resin modified and wood fibre is adopted in physics and chemistry base material, curing agent and buffer immixture, cohesive force is strong, hardness is high, heat-resisting and resistance to chemical corrosion is excellent, in physics and chemistry film, vinyl ester resin, alumina fibre and kaolin share and conservative control three proportioning in the feed, vinyl ester resin decay resistance is very excellent, coordinate and add appropriate dimethyldiethoxysilane, dimethyldiethoxysilane is conducive to the infiltration of resin, and storeroom compatibility is good, and adhesion is strong, product decay resistance, high temperature resistantly greatly to strengthen, and sealing, electrical insulating property and ageing resistance also have obvious raising, the impact that kaolin is expanded with heat and contract with cold is less than steel, can work in the comparatively violent environment of difference variation, itself and titanium dioxide are with the use of the performance significantly can improving corrosion-resistant physics and chemistry film, and anti-aging and strengthening action are comparatively obvious, and can the use cost of reduction material by a relatively large margin.In sum, cost of the present invention is low, heat-resisting, resistance to chemical corrosion is excellent.
Detailed description of the invention
Embodiment 1
The corrosion-resistant heat-resisting physics and chemistry plate of one that the present invention proposes, comprise by weight: 80 parts of physics and chemistry base materials, 8 parts of physics and chemistry films and 0.6 part of phenol-formaldehyde resin modified, physics and chemistry base material and physics and chemistry film are bonded by phenol-formaldehyde resin modified;
The raw material of physics and chemistry base material comprises by weight: wood fibre 60 parts, phenol-formaldehyde resin modified 30 parts, 4 parts, curing agent, buffer 1 part;
The raw material of physics and chemistry film comprises by weight: vinyl ester resin 50 parts, dimethyldiethoxysilane 5 parts, 30 parts, phenolic resins, alumina fibre 1 part, kaolin 40 parts, titanium dioxide 1 part;
In the preparation process of phenol-formaldehyde resin modified, by weight 75 parts of Wheat Straw Lignin from Alkali Pulpings, 15 parts of formaldehyde and 3 parts of NaOH are sent into hybrid reaction 40min in reactor, reaction temperature is 65 DEG C, continue to add 1.5 parts of NaOH reaction 40min, reaction temperature is 70 DEG C, then centrifugally obtains solid material; Solid material being added pH value is precipitate in the hydrochloric acid solution of 2.5, after centrifugal, spend deionized water to neutral, dries and obtain prefabricated material; Prefabricated material is sent in reactor, then add 2 parts of NaOH, 30 parts of water mix, be warming up to 78 DEG C, insulation 50min, adds 28 parts of phenol reactant 20min, adds 13 parts of formolite reaction 20min after being cooled to 40 DEG C, 85 DEG C are warmed up to the speed of 3 DEG C/min, insulation 60min, adding 4 parts of formolite reactions to material viscosity is 0.18Pas, and cooling obtains phenol-formaldehyde resin modified.
Embodiment 2
The corrosion-resistant heat-resisting physics and chemistry plate of one that the present invention proposes, comprise by weight: 90 parts of physics and chemistry base materials, 4 parts of physics and chemistry films and 0.9 part of phenol-formaldehyde resin modified, physics and chemistry base material and physics and chemistry film are bonded by phenol-formaldehyde resin modified;
The raw material of physics and chemistry base material comprises by weight: wood fibre 50 parts, phenol-formaldehyde resin modified 40 parts, 2 parts, curing agent, buffer 2 parts;
The raw material of physics and chemistry film comprises by weight: vinyl ester resin 30 parts, dimethyldiethoxysilane 10 parts, 20 parts, phenolic resins, alumina fibre 3 parts, kaolin 35 parts, titanium dioxide 2 parts;
In the preparation process of phenol-formaldehyde resin modified, by weight 60 parts of Wheat Straw Lignin from Alkali Pulpings, 20 parts of formaldehyde and 1 part of NaOH are sent into hybrid reaction 60min in reactor, reaction temperature is 55 DEG C, continue to add 3 parts of NaOH reaction 30min, reaction temperature is 75 DEG C, then centrifugally obtains solid material; Solid material being added pH value is precipitate in the hydrochloric acid solution of 2, after centrifugal, spend deionized water to neutral, dries and obtain prefabricated material; Prefabricated material is sent in reactor, then add 4 parts of NaOH, 15 parts of water mix, be warming up to 85 DEG C, insulation 30min, adds 22 parts of phenol reactant 40min, adds 8 parts of formolite reaction 30min after being cooled to 50 DEG C, 95 DEG C are warmed up to the speed of 1 DEG C/min, insulation 50min, adding 7 parts of formolite reactions to material viscosity is 0.15Pas, and cooling obtains phenol-formaldehyde resin modified.
Embodiment 3
The corrosion-resistant heat-resisting physics and chemistry plate of one that the present invention proposes, comprise by weight: 86 parts of physics and chemistry base materials, 5 parts of physics and chemistry films and 0.7 part of adhesive, physics and chemistry base material and physics and chemistry film are bonded by adhesive;
The raw material of physics and chemistry base material comprises by weight: wood fibre 56 parts, phenol-formaldehyde resin modified 34 parts, 2.8 parts, curing agent, buffer 1.5 parts;
The raw material of physics and chemistry film comprises by weight: vinyl ester resin 36 parts, dimethyldiethoxysilane 7 parts, 25 parts, phenolic resins, alumina fibre 1.7 parts, kaolin 37 parts, titanium dioxide 1.4 parts;
In the preparation process of phenol-formaldehyde resin modified, by weight 72 parts of Wheat Straw Lignin from Alkali Pulpings, 18 parts of formaldehyde and 2 parts of NaOH are sent into hybrid reaction 52min in reactor, reaction temperature is 61 DEG C, continue to add 1.8 parts of NaOH reaction 35min, reaction temperature is 73 DEG C, then centrifugally obtains solid material; Solid material being added pH value is precipitate in the hydrochloric acid solution of 2.3, after centrifugal, spend deionized water to neutral, dries and obtain prefabricated material; Prefabricated material is sent in reactor, then add 3.6 parts of NaOH, 17 parts of water mix, be warming up to 82 DEG C, insulation 42min, adds 26 parts of phenol reactant 34min, adds 10 parts of formolite reaction 23min after being cooled to 46 DEG C, 91 DEG C are warmed up to the speed of 2 DEG C/min, insulation 56min, adding 6 parts of formolite reactions to material viscosity is 0.16Pas, and cooling obtains phenol-formaldehyde resin modified.
Embodiment 4
The corrosion-resistant heat-resisting physics and chemistry plate of one that the present invention proposes, comprise by weight: 84 parts of physics and chemistry base materials, 6 parts of physics and chemistry films and 0.6 part of adhesive, physics and chemistry base material and physics and chemistry film are bonded by adhesive;
The raw material of physics and chemistry base material comprises by weight: wood fibre 58 parts, phenol-formaldehyde resin modified 32 parts, 3 parts, curing agent, buffer 1.2 parts;
The raw material of physics and chemistry film comprises by weight: vinyl ester resin 39 parts, dimethyldiethoxysilane 6 parts, 26 parts, phenolic resins, alumina fibre 1.5 parts, kaolin 38 parts, titanium dioxide 1.2 parts;
In the preparation process of phenol-formaldehyde resin modified, by weight 72 parts of Wheat Straw Lignin from Alkali Pulpings, 16 parts of formaldehyde and 2.8 parts of NaOH are sent into hybrid reaction 45min in reactor, reaction temperature is 62 DEG C, continue to add 1.8 parts of NaOH reaction 38min, reaction temperature is 71 DEG C, then centrifugally obtains solid material; Solid material being added pH value is precipitate in the hydrochloric acid solution of 2.4, after centrifugal, spend deionized water to neutral, dries and obtain prefabricated material; Prefabricated material is sent in reactor, then add 2.4 parts of NaOH, 28 parts of water mix, be warming up to 79 DEG C, insulation 48min, adds 27 parts of phenol reactant 21min, adds 12 parts of formolite reaction 21min after being cooled to 42 DEG C, 86 DEG C are warmed up to the speed of 2.8 DEG C/min, insulation 58min, adding 4.3 parts of formolite reactions to material viscosity is 0.17Pas, and cooling obtains phenol-formaldehyde resin modified.
Embodiment 5
The corrosion-resistant heat-resisting physics and chemistry plate of one that the present invention proposes, comprise by weight: 88 parts of physics and chemistry base materials, 4 parts of physics and chemistry films and 0.8 part of phenol-formaldehyde resin modified, physics and chemistry base material and physics and chemistry film are bonded by phenol-formaldehyde resin modified;
The raw material of physics and chemistry base material comprises by weight: wood fibre 54 parts, phenol-formaldehyde resin modified 36 parts, 2.5 parts, curing agent, buffer 1.6 parts;
The raw material of physics and chemistry film comprises by weight: vinyl ester resin 35 parts, dimethyldiethoxysilane 8 parts, 24 parts, phenolic resins, alumina fibre 2 parts, kaolin 36 parts, titanium dioxide 1.5 parts;
In the preparation process of phenol-formaldehyde resin modified, by weight 62 parts of Wheat Straw Lignin from Alkali Pulpings, 18 parts of formaldehyde and 1.3 parts of NaOH are sent into hybrid reaction 56min in reactor, reaction temperature is 56 DEG C, continue to add 2.8 parts of NaOH reaction 32min, reaction temperature is 74 DEG C, then centrifugally obtains solid material; Solid material being added pH value is precipitate in the hydrochloric acid solution of 2.1, after centrifugal, spend deionized water to neutral, dries and obtain prefabricated material; Prefabricated material is sent in reactor, then add 3.8 parts of NaOH, 16 parts of water mix, be warming up to 83 DEG C, insulation 32min, adds 23 parts of phenol reactant 38min, adds 9 parts of formolite reaction 28min after being cooled to 28 DEG C, 94 DEG C are warmed up to the speed of 1.2 DEG C/min, insulation 52min, adding 6.8 parts of formolite reactions to material viscosity is 0.16Pas, and cooling obtains phenol-formaldehyde resin modified.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. a corrosion-resistant heat-resisting physics and chemistry plate, is characterized in that, comprise by weight: 80-90 part physics and chemistry base material, 4-8 part physics and chemistry film and 0.6-0.9 part adhesive, and physics and chemistry base material and physics and chemistry film are bonded by adhesive;
The raw material of physics and chemistry base material comprises by weight: wood fibre 50-60 part, phenol-formaldehyde resin modified 30-40 part, curing agent 2-4 part, buffer 1-2 part;
The raw material of physics and chemistry film comprises by weight: vinyl ester resin 30-50 part, dimethyldiethoxysilane 5-10 part, phenolic resins 20-30 part, alumina fibre 1-3 part, kaolin 35-40 part, titanium dioxide 1-2 part;
In the preparation process of phenol-formaldehyde resin modified, Wheat Straw Lignin from Alkali Pulping, formaldehyde and NaOH to be sent in reactor after mixing, continue to add NaOH, then centrifugally obtain solid material; Solid material is added in hydrochloric acid solution and precipitates, after centrifugal, spend deionized water to neutral, dry and obtain prefabricated material; Prefabricated material is sent in reactor, then add NaOH, water mixes, and heats up and is incubated, and adds phenol, formaldehyde after cooling, then heats up and is incubated, then adding formaldehyde to material viscosity is 0.15-0.18Pas, cools and obtains phenol-formaldehyde resin modified.
2. corrosion-resistant heat-resisting physics and chemistry plate according to claim 1, it is characterized in that, in the preparation process of phenol-formaldehyde resin modified, by weight 60-75 part Wheat Straw Lignin from Alkali Pulping, 15-20 part formaldehyde and 1-3 part NaOH are sent into hybrid reaction 40-60min in reactor, reaction temperature is 55-65 DEG C, continue to add 1.5-3 part NaOH reaction 30-40min, reaction temperature is 70-75 DEG C, then centrifugally obtains solid material; Solid material being added pH value is precipitate in the hydrochloric acid solution of 2-2.5, after centrifugal, spend deionized water to neutral, dries and obtain prefabricated material; Prefabricated material is sent in reactor, then add 2-4 part NaOH, 15-30 part water mixes, be warming up to 78-85 DEG C, insulation 30-50min, adds 22-28 part phenol reactant 20-40min, adds 8-13 part formolite reaction 20-30min after being cooled to 40-50 DEG C, 85-95 DEG C is warmed up to the speed of 1-3 DEG C/min, insulation 50-60min, adding 4-7 part formolite reaction to material viscosity is 0.15-0.18Pas, and cooling obtains phenol-formaldehyde resin modified.
3. the corrosion-resistant heat-resisting physics and chemistry plate according to any one of claim 1-2, is characterized in that, adhesive is phenol-formaldehyde resin modified.
4. the corrosion-resistant heat-resisting physics and chemistry plate according to any one of claim 1-3, is characterized in that, the weight ratio of physics and chemistry base material, physics and chemistry film and adhesive is 84-88:4-6:0.6-0.8.
5. the corrosion-resistant heat-resisting physics and chemistry plate according to any one of claim 1-4, is characterized in that, in physics and chemistry base material, the weight ratio of wood fibre and phenol-formaldehyde resin modified is 54-58:32-36.
6. according to the corrosion-resistant heat-resisting physics and chemistry plate that any one of claim 1-5 is stated, it is characterized in that, the raw material of physics and chemistry base material comprises by weight: wood fibre 54-58 part, phenol-formaldehyde resin modified 32-36 part, curing agent 2.5-3 part, buffer 1.2-1.6 part.
7. the corrosion-resistant heat-resisting physics and chemistry plate according to any one of claim 1-6, is characterized in that, in physics and chemistry film, the weight ratio of vinyl ester resin, dimethyldiethoxysilane and phenolic resins is 35-39:6-8:24-26.
8. the corrosion-resistant heat-resisting physics and chemistry plate according to any one of claim 1-7, it is characterized in that, the raw material of physics and chemistry film comprises by weight: vinyl ester resin 35-39 part, dimethyldiethoxysilane 6-8 part, phenolic resins 24-26 part, alumina fibre 1.5-2 part, kaolin 36-38 part, titanium dioxide 1.2-1.5 part.
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| CN201510070610.3A CN104589713B (en) | 2015-02-10 | 2015-02-10 | A kind of corrosion-resistant heat-resisting physics and chemistry plate |
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| CN107344379A (en) * | 2017-07-31 | 2017-11-14 | 常州市卜诺赛机电技术有限公司 | A kind of preparation method of high-strength bamboo offset plate |
| CN113870534A (en) * | 2021-08-15 | 2021-12-31 | 桂林理工大学 | Structural design method of explosion-proof harmful gas detection fume hood |
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| CN104589713B (en) | 2017-11-17 |
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