CN104926982A - Polymer composite for board modification and preparation method thereof - Google Patents
Polymer composite for board modification and preparation method thereof Download PDFInfo
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- CN104926982A CN104926982A CN201510429132.0A CN201510429132A CN104926982A CN 104926982 A CN104926982 A CN 104926982A CN 201510429132 A CN201510429132 A CN 201510429132A CN 104926982 A CN104926982 A CN 104926982A
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Abstract
The invention discloses a polymer composite for board modification and a preparation method thereof. The polymer composite includes the following components of, by weight, 296 parts of polymer monomer, 20-40 parts of modifier, 6-12 parts of protective colloid, 1.5-3.0 parts of initiator, 300-600 parts of water and the balance acid solution and aqueous alkali for adjusting the pH value. The polymer monomer is one or more of crylic acid and acrylics. The modifier is a silane coupling agent. The protective colloid is one of sodium polymethacrylate, polyving akohol, nano-crystalline cellulose and sodium carboxymethylcellulose. The initiator is ammonium persulfate or potassium peroxodisulfate. The polymer composite for board modification can react with calcium ions in boards, can be solidified into a waterproof layer with excellent waterproofness, and is an ideal material in the board machining process.
Description
Technical field
The present invention relates to high molecular polymer field, specifically relate to and be a kind ofly applied to polymer composite of sheet material modification and preparation method thereof.
Background technology
Water-repellancy is one of main performance index of sheet fabrication product, and therefore sheet material usually will carry out certain process in advance in the course of processing, to limit this sheet material and contact with moisture and to absorb the amount of water, increases its usage period.Such as in the course of processing of hot-plate, need to carry out pre-treatment to sheet material, make it solidify to form waterproof layer.
Waterproof paint be brushing on building surface, form thin film through the volatilization of solvent or moisture or the chemical reaction of two kinds of components, building surface and water completely cut off, thus plays the effect of waterproof, sealing.The waterproofing membrane that waterproof paint is formed after solidification has certain extensibility, elastoplasticity, splitting resistance, impermeability and weathering resistance, can play waterproof, prevent blending provide protection.
In recent years, along with the fast development of China's sheet material material converted products, board industry requires also more and more higher to the water resistance of sheet fabrication product.But the waterproofing layer thickness that general waterproof paint is formed is thin, and intensity is weak, the erosion of the erosions such as acid, alkali in water cannot be tolerated, cause premature leakage.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of polymer composite for sheet material modification and preparation method thereof is provided, described polymer composite is mainly used in sheet fabrication process, reacted by the calcium ion in polymer composite and sheet material, be solidified into waterproof layer.
For achieving the above object, the present invention adopts following technical scheme:
For a polymer composite for sheet material modification, its raw material comprises the component of following weight part: polymer monomer 296 parts, properties-correcting agent 20-40 part, protective colloid 6-12 part, initiator 1.5-3.0 part, water 300-600 part, and for the acid solution of adjust ph and alkaline solution;
Wherein, described polymer monomer is a kind of in vinylformic acid or esters of acrylic acid or their mixture; Described properties-correcting agent is silane coupling agent; Described protective colloid is the one in sodium polymethacrylate, polyvinyl alcohol, nano-cellulose or Xylo-Mucine; Described initiator is ammonium persulphate or Potassium Persulphate.
Further, described esters of acrylic acid is methyl acrylate or ethyl propenoate.
Described silane coupling agent is alkenyl silanes coupling agent or methacryloxypropyl silane coupling agent.
Described acid solution is the one in hydrochloric acid, citric acid, oxalic acid or carboxylic acid, but is not limited thereto.
Described alkaline solution is the one in sodium hydroxide, potassium hydroxide, ammoniacal liquor or sodium carbonate, but is not limited thereto.
Described water is deionized water or distilled water.
The consumption of described acid solution and alkaline solution is for regulating potential of hydrogen to corresponding pH value.
The preparation method of the polymer composite for sheet material modification of the present invention comprises the following steps: take each component by weight,
1) polymer monomer of polymer monomer total amount 19/20 and properties-correcting agent are pre-mixed, obtain polymer monomer and properties-correcting agent mixture, stand-by;
2) protective colloid and water are dropped in reactor, control temperature 80-90 DEG C, stir 30-60min;
3) in reactor, pass into nitrogen or the carbonic acid gas that concentration is 99%, and add acid solution adjust ph=3-5;
4) continue the polymer monomer dropping into polymer monomer total amount 1/20 in reactor, stir 15-20min;
5) in reactor, drop into the initiator of polymer monomer total amount 1/20, stir 25-35min;
6) in reactor, step 1 is dripped) initiator of the polymer monomer that obtains and properties-correcting agent mixture and remainder, time for adding is 5-8h;
7) be then cooled to 35-40 DEG C, being evacuated to reacting kettle inner pressure is 0.02-0.06MPa, stirs 1-2h;
8) continue vacuum in release reaction still and be cooled to 30 DEG C, regulating pH=7.0-8.0 with alkaline solution, stirring 20min, obtain the polymer composite for sheet material modification.
The present invention adopts above technical scheme, after vinylformic acid or acrylic polymer monomer being mixed with properties-correcting agent, carry out copolymerization, obtains containing carboxyl and silanol structuring polymer matrix material.In sheet fabrication process, sheet material is soaked in polymer composite of the present invention, the calcium ion in sheet material can with the carboxyl in polymer composite and silanol structural response, formed chemical bond connect and be solidified into waterproof layer.Its mechanism is that organic polymeric emulsions particle can infiltrate sheet material hole in sheet material immersion process, and then dehydration distortion and become and have agglutinating value(of coal) and successional layers of elastomeric film in drying process, is covered in plate surface; Simultaneously in sheet material drying process, carboxyl in polymer molecule and silanol structure also can form chemical bond with calcium ion and be connected, thus flexible polymer film and sheet material hardenite are run through mutually: flexible polymer-filled, in the space of sheet material hardenite, makes sheet material hardenite finer and close; Sheet material hardenite is filled in again in polymer phase, makes polymkeric substance have better outside durabitity and better basic unit adaptability, thus forms a firm and resilient waterproof layer at plate surface.Present invention process is simple, easy construction, safety and environmental protection, be the ideal material in the water-proof sheet material course of processing.
Embodiment
For a polymer composite for sheet material modification, its raw material comprises the component of following weight part: polymer monomer 296 parts, properties-correcting agent 20-40 part, protective colloid 6-12 part, initiator 1.5-3.0 part, water 300-600 part, and for the acid solution of adjust ph and alkaline solution;
Wherein, described polymer monomer is a kind of in vinylformic acid or esters of acrylic acid or their mixture;
Described properties-correcting agent is alkenyl silanes coupling agent or methacryloxypropyl silane coupling agent;
Described protective colloid is the one in sodium polymethacrylate, polyvinyl alcohol, nano-cellulose or Xylo-Mucine;
Described initiator is ammonium persulphate or Potassium Persulphate;
Described acid solution is the one in hydrochloric acid, citric acid, oxalic acid or carboxylic acid;
Described alkaline solution is the one in sodium hydroxide, potassium hydroxide, ammoniacal liquor or sodium carbonate;
Described water is deionized water or distilled water.
The preparation method of the described polymer composite for sheet material modification comprises the following steps: take each component by weight,
1) polymer monomer of polymer monomer total amount 19/20 and properties-correcting agent are pre-mixed, obtain polymer monomer and properties-correcting agent mixture, stand-by;
2) protective colloid and water are dropped in reactor, control temperature 80-90 DEG C, stir 30-60min;
3) in reactor, pass into nitrogen or the carbonic acid gas that concentration is 99%, and add acid solution adjust ph=3-5;
4) continue the polymer monomer dropping into polymer monomer total amount 1/20 in reactor, stir 15-20min;
5) in reactor, drop into the initiator of polymer monomer total amount 1/20, stir 25-35min;
6) in reactor, step 1 is dripped) initiator of the polymer monomer that obtains and properties-correcting agent mixture and remainder, time for adding is 5-8h;
7) be then cooled to 35-40 DEG C, being evacuated to reacting kettle inner pressure is 0.02-0.06MPa, stirs 1-2h;
8) continue vacuum in release reaction still and be cooled to 30 DEG C, regulating pH=7.0-8.0 with alkaline solution, stirring 20min, obtain the polymer composite for sheet material modification.
Below in conjunction with specific embodiment, the present invention is further described, but embodiments of the present invention are not limited thereto.
Embodiment 1
A kind of preparation method of the polymer composite for sheet material modification comprises the following steps:
1) following component is taken by weight: polymer monomer 296 parts, properties-correcting agent 30 parts, protective colloid 9 parts, initiator 2 parts, deionized water 450 parts;
2) polymer monomer of polymer monomer total amount 19/20 and properties-correcting agent are pre-mixed, obtain polymer monomer and properties-correcting agent mixture, stand-by;
3) protective colloid and water are dropped in reactor, control temperature 80-90 DEG C, stir 45min;
4) in reactor, pass into nitrogen or the carbonic acid gas that concentration is 99%, and add acid solution adjust ph=4;
5) continue the polymer monomer dropping into polymer monomer total amount 1/20 in reactor, stir 18min;
6) in reactor, drop into the initiator of polymer monomer total amount 1/20, stir 30min;
7) in reactor, step 2 is dripped) initiator of the polymer monomer that obtains and properties-correcting agent mixture and remainder, time for adding is 6.5h;
8) be then cooled to 35 DEG C, being evacuated to reacting kettle inner pressure is 0.04MPa, stirs 1.5h;
9) continue vacuum in release reaction still and be cooled to 30 DEG C, regulating pH=7.5 with alkaline solution, stirring 20min, obtain the polymer composite for sheet material modification;
Wherein, described polymer monomer is vinylformic acid, and described properties-correcting agent is methacryloxypropyl silane coupling agent, and described protective colloid is sodium polymethacrylate, and described initiator is ammonium persulphate, and described acid solution is hydrochloric acid, and described alkaline solution is sodium hydroxide.
Embodiment 2
A kind of preparation method of the polymer composite for sheet material modification comprises the following steps:
1) following component is taken by weight: polymer monomer 296 parts, properties-correcting agent 20 parts, protective colloid 6 parts, initiator 1.5 parts, distilled water 300 parts;
2) polymer monomer of polymer monomer total amount 19/20 and properties-correcting agent are pre-mixed, obtain polymer monomer and properties-correcting agent mixture, stand-by;
3) protective colloid and water are dropped in reactor, control temperature 80-90 DEG C, stir 30min;
4) in reactor, pass into nitrogen or the carbonic acid gas that concentration is 99%, and add acid solution adjust ph=3;
5) continue the polymer monomer dropping into polymer monomer total amount 1/20 in reactor, stir 15min;
6) in reactor, drop into the initiator of polymer monomer total amount 1/20, stir 25min;
7) in reactor, step 2 is dripped) initiator of the polymer monomer that obtains and properties-correcting agent mixture and remainder, time for adding is 5h;
8) be then cooled to 35 DEG C, being evacuated to reacting kettle inner pressure is 0.02MPa, stirs 1h;
9) continue vacuum in release reaction still and be cooled to 30 DEG C, regulating pH=7.0 with alkaline solution, stirring 20min, obtain the polymer composite for sheet material modification;
Wherein, described polymer monomer is methyl acrylate, and described properties-correcting agent is alkenyl silanes coupling agent, and described protective colloid is polyvinyl alcohol, and described initiator is Potassium Persulphate, and described acid solution is citric acid, and described alkaline solution is potassium hydroxide.
Embodiment 3
A kind of preparation method of the polymer composite for sheet material modification comprises the following steps:
1) following component is taken by weight: polymer monomer 296 parts, properties-correcting agent 40 parts, protective colloid 12 parts, initiator 3.0 parts, deionized water 600 parts;
2) polymer monomer of polymer monomer total amount 19/20 and properties-correcting agent are pre-mixed, obtain polymer monomer and properties-correcting agent mixture, stand-by;
3) protective colloid and water are dropped in reactor, control temperature 80-90 DEG C, stir 60min;
4) in reactor, pass into nitrogen or the carbonic acid gas that concentration is 99%, and add acid solution adjust ph=5;
5) continue the polymer monomer dropping into polymer monomer total amount 1/20 in reactor, stir 20min;
6) in reactor, drop into the initiator of polymer monomer total amount 1/20, stir 35min;
7) in reactor, step 2 is dripped) initiator of the polymer monomer that obtains and properties-correcting agent mixture and remainder, time for adding is 8h;
8) be then cooled to 40 DEG C, being evacuated to reacting kettle inner pressure is 0.06MPa, stirs 2h;
9) continue vacuum in release reaction still and be cooled to 30 DEG C, regulating pH=8.0 with alkaline solution, stirring 20min, obtain the polymer composite for sheet material modification;
Wherein, described polymer monomer is ethyl propenoate, and described properties-correcting agent is methacryloxypropyl silane coupling agent, and described protective colloid is nano-cellulose, and described initiator is ammonium persulphate, and described acid solution is oxalic acid, and described alkaline solution is ammoniacal liquor.
Embodiment 4
A kind of preparation method of the polymer composite for sheet material modification comprises the following steps:
1) following component is taken by weight: polymer monomer 296 parts, properties-correcting agent 25 parts, protective colloid 8 parts, initiator 2.5 parts, distilled water 400 parts;
2) polymer monomer of polymer monomer total amount 19/20 and properties-correcting agent are pre-mixed, obtain polymer monomer and properties-correcting agent mixture, stand-by;
3) protective colloid and water are dropped in reactor, control temperature 80-90 DEG C, stir 50min;
4) in reactor, pass into nitrogen or the carbonic acid gas that concentration is 99%, and add acid solution adjust ph=4;
5) continue the polymer monomer dropping into polymer monomer total amount 1/20 in reactor, stir 15min;
6) in reactor, drop into the initiator of polymer monomer total amount 1/20, stir 30min;
7) in reactor, step 2 is dripped) initiator of the polymer monomer that obtains and properties-correcting agent mixture and remainder, time for adding is 7h;
8) be then cooled to 35-40 DEG C, being evacuated to reacting kettle inner pressure is 0.02-0.06MPa, stirs 2h;
9) continue vacuum in release reaction still and be cooled to 30 DEG C, regulating pH=7.5 with alkaline solution, stirring 20min, obtain the polymer composite for sheet material modification;
Wherein, described polymer monomer is vinylformic acid and ethyl propenoate, and its weight part ratio is 1:1; Described properties-correcting agent is methacryloxypropyl silane coupling agent, and described protective colloid is Xylo-Mucine, and described initiator is ammonium persulphate, and described acid solution is carboxylic acid, and described alkaline solution is sodium carbonate.
Embodiment 5
For a polymer composite for sheet material modification, its raw material comprises the component of following weight part: polymer monomer 296 parts, properties-correcting agent 35 parts, protective colloid 10 parts, initiator 1.5 parts, deionized water 500 parts;
Wherein, described polymer monomer is vinylformic acid and methyl acrylate, and its weight part ratio is 1:2; Described properties-correcting agent is alkenyl silanes coupling agent; described protective colloid is sodium polymethacrylate, and described initiator is Potassium Persulphate, and described acid solution is hydrochloric acid; described alkaline solution is sodium hydroxide, and the preparation method of the described polymer composite for sheet material modification is with embodiment 1.
Embodiment 6
For a polymer composite for sheet material modification, its raw material comprises the component of following weight part: polymer monomer 296 parts, properties-correcting agent 35 parts, protective colloid 10 parts, initiator 3.0 parts, distilled water 500 parts;
Wherein, described polymer monomer is vinylformic acid, methyl acrylate and ethyl propenoate, and its weight part ratio is 1:1:1; Described properties-correcting agent is methacryloxypropyl silane coupling agent; Described protective colloid is polyvinyl alcohol; Described initiator is Potassium Persulphate; Described acid solution is citric acid; Described alkaline solution is sodium carbonate, and the preparation method of the described polymer composite for sheet material modification is with embodiment 2.
Experimental example
After sheet material after polymer composite process of the present invention is soaked 3h in room temperature water, measure sheet material water-intake rate, wherein the sheet material of control group is without polymer composite process, and test-results is as follows:
| Group | Water-intake rate (%) |
| Contrast | 15.0 |
| Embodiment 1 | 1.0 |
| Embodiment 2 | 1.2 |
| Embodiment 3 | 1.0 |
| Embodiment 4 | 0.8 |
| Embodiment 5 | 0.9 |
| Embodiment 6 | 1.0 |
From above result, soak 3h in room temperature water after, the water-intake rate of control group sheet material is 15%, and the sheet material after the polymer composite process of embodiment 1-6, its water-intake rate is less than 1.2%.This is because the plate surface after polymer composite process of the present invention defines firm and resilient waterproof layer, improve the water resistance of sheet material significantly.
Claims (8)
1. the polymer composite for sheet material modification, it is characterized in that: its raw material comprises the component of following weight part: polymer monomer 296 parts, properties-correcting agent 20-40 part, protective colloid 6-12 part, initiator 1.5-3.0 part, water 300-600 part, and for the acid solution of adjust ph and alkaline solution;
Wherein, described polymer monomer is a kind of in vinylformic acid or esters of acrylic acid or their mixture; Described properties-correcting agent is silane coupling agent; Described protective colloid is the one in sodium polymethacrylate, polyvinyl alcohol, nano-cellulose or Xylo-Mucine; Described initiator is ammonium persulphate or Potassium Persulphate.
2. a kind of polymer composite for sheet material modification according to claim 1, is characterized in that: described esters of acrylic acid is methyl acrylate or ethyl propenoate.
3. a kind of polymer composite for sheet material modification according to claim 1, is characterized in that: described silane coupling agent is alkenyl silanes coupling agent or methacryloxypropyl silane coupling agent.
4. a kind of polymer composite for sheet material modification according to claim 1, is characterized in that: described acid solution is the one in hydrochloric acid, citric acid, oxalic acid or carboxylic acid.
5. a kind of polymer composite for sheet material modification according to claim 1, is characterized in that: described alkaline solution is the one in sodium hydroxide, potassium hydroxide, ammoniacal liquor or sodium carbonate.
6. a kind of polymer composite for sheet material modification according to claim 1, is characterized in that: described water is deionized water or distilled water.
7. a kind of polymer composite for sheet material modification according to claim 1, is characterized in that: the consumption of described acid solution and alkaline solution is for regulating potential of hydrogen to corresponding pH value.
8. the preparation method of a kind of polymer composite for sheet material modification as described in one of claim 1-7, is characterized in that: it comprises the following steps: take each component by weight,
1) polymer monomer of polymer monomer total amount 19/20 and properties-correcting agent are pre-mixed, obtain polymer monomer and properties-correcting agent mixture, stand-by;
2) protective colloid and water are dropped in reactor, control temperature 80-90 DEG C, stir 30-60min;
3) in reactor, pass into nitrogen or the carbonic acid gas that concentration is 99%, and add acid solution adjust ph=3-5;
4) continue the polymer monomer dropping into polymer monomer total amount 1/20 in reactor, stir 15-20min;
5) in reactor, drop into the initiator of polymer monomer total amount 1/20, stir 25-35 min;
6) in reactor, step 1 is dripped) initiator of the polymer monomer that obtains and properties-correcting agent mixture and remainder, time for adding is 5-8 h;
7) be then cooled to 35-40 DEG C, being evacuated to reacting kettle inner pressure is 0.02-0.06MPa, stirs 1-2h;
8) continue vacuum in release reaction still and be cooled to 30 DEG C, regulating pH=7.0-8.0 with alkaline solution, stir 20 min, obtain the polymer composite for sheet material modification.
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| CN201510429132.0A CN104926982B (en) | 2015-07-21 | 2015-07-21 | A kind of polymer composite being modified for sheet material and preparation method thereof |
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2015
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| CN1223284A (en) * | 1998-01-13 | 1999-07-21 | 江苏日出(集团)公司 | Polyacrylic water-proof emulsion |
| CN1382738A (en) * | 2001-04-23 | 2002-12-04 | 海城市西柳化学品有限公司 | Benzenepropane emulsion modified by silane as coupling agent and its preparing process and application |
| CN101328237A (en) * | 2007-06-18 | 2008-12-24 | 陕西邦希化工有限公司 | Preparation of cation surface sizing agent emulsion |
| US20090203832A1 (en) * | 2008-02-09 | 2009-08-13 | Celanese Emulsions Gmbh | Process for Preparing Polymer Dispersions, the Resulting Dispersions and Their Use |
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