CN110497635A - Sea water resistance waterstop production technology - Google Patents
Sea water resistance waterstop production technology Download PDFInfo
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- CN110497635A CN110497635A CN201910774975.2A CN201910774975A CN110497635A CN 110497635 A CN110497635 A CN 110497635A CN 201910774975 A CN201910774975 A CN 201910774975A CN 110497635 A CN110497635 A CN 110497635A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
Abstract
The present invention relates to waterstop production technical fields, more particularly, to a kind of sea water resistance waterstop production technology, comprising the following steps: prepare polyacrylate dispersion, polyvinyl alcohol emulsions, pure water, fabric hot rolled nonwoven fabrics, immersion non-woven fabrics, sodium alginate aqueous solution, acrylic acid aqueous solution, initiator, water bath with thermostatic control equipment, drying equipment, disintegrating apparatus, press equipment, winding device；Polyvinyl alcohol emulsions and polyacrylate dispersion allot mixed glue solution with the content ratio of 1:1 and pure water；Mixed glue solution is coated on fabric hot rolled nonwoven fabrics；Prepare water-absorbing resin.The present invention, under certain condition with acrylic acid-grafted crosslinking, synthesizes the water-absorbing resin with salt tolerance, high-hydroscopicity, water-absorbing resin is made to be able to maintain good imbibition rate in the seawater using sodium alginate.
Description
Technical field
The present invention relates to waterstop production technical fields, more particularly, to a kind of sea water resistance waterstop production technology.
Background technique
In recent ten years, with the rapid development of communication technology, the application field of optical cable is growing, since environment is to light
The requirement of cable is continuously improved, therefore is also increased accordingly to optical cable with the requirement of material amount.Water-blocking tapes for fiber optic cable is that optical cable industry is universal
The material water-proof material of use, sealing, waterproof, damp proof insulation and buffering protective action played in optical cable are known together by people, product
Kind and performance are also constantly as the development of optical cable obtains improve and perfect.
A few days ago, notification number is that the Chinese invention patent of CN107901533A discloses a kind of semiconductor waterstop, at subpackage
Include 30-35 parts of non-woven fabrics, 20-25 parts of natural rubber, 10-13 parts of carbon black, copper strips two, 2-4 parts of waterproofing agent, 2-4 parts of adhesive；
And the preparation process of the semiconductor waterstop, steps are as follows: (1) stocking up: getting enough non-woven fabrics, natural rubber, carbon black, copper ready
Band, waterproofing agent, adhesive；(2) merging: natural rubber, carbon black, waterproofing agent are merged and being uniformly mixed becomes mixture；(3) it applies
Brush: the mixture with a thickness of 0.3-0.6 centimetres is coated on non-woven fabrics two sides using artificial or machine for brushing；(4) it is bonded: in nonwoven
Copper strips is bonded on the mixture that cloth both sides coat；(5) it brushes again: continuing to brush one layer of mixture on the copper strips posted
As waterstop；(6) it dries: will be blocked water using low temperature drying, and cut extra corner and install in rolls.
Waterstop currently on the market is many kinds of, joined super absorbent resin in certain waterstops and blocks water as above-mentioned
Agent makes waterstop have good water absorbing properties, but in briny environment, salinity (such as NaCl) will be greatly reduced high water absorption
The imbibition rate of property resin, causes the water absorbing properties of waterstop to decline.
Summary of the invention
The object of the present invention is to provide a kind of sea water resistance waterstop production technologies, and sea water resistance waterstop is made also in the seawater
Keep good water imbibition.
Foregoing invention purpose of the invention has the technical scheme that a kind of sea water resistance waterstop production
Technique, comprising the following steps:
Step1. prepare polyacrylate dispersion, polyvinyl alcohol emulsions, pure water, fabric hot rolled nonwoven fabrics, immersion non-woven fabrics, alginic acid
Sodium water solution, acrylic acid aqueous solution, initiator, water bath with thermostatic control equipment, drying equipment, disintegrating apparatus, press equipment, winding are set
It is standby；
Step2. the water-bath sodium alginate aqueous solution in water bath with thermostatic control equipment leads to nitrogen 15 into the container of sodium alginate aqueous solution
Minute, it being stirred during logical nitrogen, acrylic acid aqueous solution, initiator is sequentially added in whipping process, control bath temperature is 50 DEG C,
Isothermal reaction three hours, it will obtain crushing after product is dehydrated with drying equipment by disintegrating apparatus, obtain powdered suction
Water-resin；
Step3. polyvinyl alcohol emulsions and polyacrylate dispersion allot mixed glue solution with the content ratio of 1:1 and pure water；
Step4. mixed glue solution is coated on fabric hot rolled nonwoven fabrics；
Step5. water-absorbing resin is uniformly sprinkled on the sticky surface of immersion non-woven fabrics；
Step6. make water-absorbing resin and mixed glue solution relatively by immersion non-woven fabrics and fabric hot rolled nonwoven fabrics through press equipment pressing at
It is sent into drying equipment drying after reason, sea water resistance waterstop is made；
Step7. winding device winds sea water resistance waterstop.
Tool is synthesized using sodium alginate under certain condition with acrylic acid-grafted crosslinking by using above-mentioned technical proposal
There is the water-absorbing resin of salt tolerance, high-hydroscopicity, water-absorbing resin is made to be able to maintain good imbibition rate in the seawater.Polyvinyl alcohol is
A kind of thickener (crosslinking agent), is the auxiliary agent to form gel, so polyvinyl alcohol emulsions are mixed with what polyacrylate emulsion was mixed into
Closing glue has good adhesion property to fabric hot rolled nonwoven fabrics and water-absorbing resin, it is ensured that water-absorbing resin is not fallen out.
Preferably, the acrylic acid is using preceding through in NaOH and 70%.
By using above-mentioned technical proposal, sodium acrylate is made, the rate of water absorption of sodium acrylate, gel strength will be better than
Acrylic acid.
Preferably, the initiator is ammonium ceric nitrate, and the concentration of ammonium ceric nitrate is 6.0 × 10-4mol/L-6.5×10- 4mol/L。
By using above-mentioned technical proposal, ammonium ceric nitrate as initiator can initiation grafting reaction, when ammonium ceric nitrate concentration
In 6.0 × 10-4mol/L-6.5×10-4When in mol/L range, obtained water-absorbing resin imbibition rate highest is more than the concentration
When range, then the imbibition rate of water-absorbing resin, which gradually decreases, then reaches an equilibrium valve.
Preferably, the acrylic acid aqueous solution concentration is 40-45g/L, and sodium alginate aqueous solution concentration is 20-25g/L.
By using above-mentioned technical proposal, when concentration of acrylic acid is in 40-45g/L range, sodium alginate monomer
When concentration is in 20-25g/L range, the imbibition rate highest of obtained water-absorbing resin.
Preferably, the solid content of the polyacrylate dispersion is 40-50%.
By using above-mentioned technical proposal, it is ensured that mixed glue solution has good adhesion property.
Preferably, the solid content of the polyvinyl alcohol emulsions is 10-15%.
By using above-mentioned technical proposal, it is ensured that mixed glue solution has good adhesion property.
Preferably, the drying temperature of the drying equipment is 100-130 DEG C.
By using above-mentioned technical proposal, drying temperature is controlled within this temperature range, it is ensured that water absorption resistance resin
Water absorbing properties.
Preferably, drying time is 25-30 seconds.
By using above-mentioned technical proposal, drying time is controlled in the range, it is ensured that non-woven fabrics physical property is not
It is influenced by high temperature.
In conclusion advantageous effects of the invention are as follows:
1. synthesizing the water suction with salt tolerance, high-hydroscopicity under certain condition with acrylic acid-grafted crosslinking using sodium alginate
Resin makes water-absorbing resin be able to maintain good imbibition rate in the seawater；
2. the mixed glue solution that polyvinyl alcohol emulsions and polyacrylate emulsion are mixed into has very well fabric hot rolled nonwoven fabrics and water-absorbing resin
Adhesion property, it is ensured that water-absorbing resin is not fallen out.
Detailed description of the invention
Fig. 1 is a kind of flow chart of sea water resistance waterstop production technology in embodiment.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1: Fig. 1 is a kind of sea water resistance waterstop production technology disclosed by the invention, and steps are as follows:
The first step prepares polyacrylate dispersion, polyvinyl alcohol emulsions, pure water, fabric hot rolled nonwoven fabrics, immersion non-woven fabrics, seaweed
Acid sodium aqueous solution, acrylic acid aqueous solution, initiator, water bath with thermostatic control equipment, drying equipment, disintegrating apparatus, press equipment, winding are set
It is standby；
The flask for accommodating sodium alginate aqueous solution (concentration 20g/L) is placed in heating water bath in water bath with thermostatic control equipment by second step,
Lead into flask nitrogen 15 minutes, is stirred during logical nitrogen, acrylic acid aqueous solution (concentration 40g/ is sequentially added in whipping process
L, through in NaOH and 70%), (concentration is 6.02 × 10 to initiator-4The ammonium ceric nitrate of mol/L), control bath temperature is 50 DEG C, permanent
Temperature reaction three hours, will obtain crushing after product is dehydrated with drying equipment by disintegrating apparatus, obtains powdered water suction
Resin；
Third step, by polyvinyl alcohol emulsions (solid content 10%), polyacrylate dispersion (solid content 40%), pure water with 1:
The content ratio of 1:0.5 prepares mixed glue solution, the mixed proportion can guarantee adhesion property when mixed glue solution uses it is good, at
Softness after type is good；
4th step, coats mixed glue solution on fabric hot rolled nonwoven fabrics；
5th step uniformly sprinkles water-absorbing resin on the sticky surface of immersion non-woven fabrics；
6th step, make water-absorbing resin and mixed glue solution relatively by immersion non-woven fabrics and fabric hot rolled nonwoven fabrics through press equipment pressing at
Drying equipment drying is sent into after reason, the drying temperature of drying equipment is 100 DEG C, and drying time is 25 seconds, obtains sea water resistance and blocks water
Band；
7th step, winding device wind sea water resistance waterstop.
Embodiment 2: a kind of sea water resistance waterstop production technology, steps are as follows:
The first step prepares polyacrylate dispersion, polyvinyl alcohol emulsions, pure water, fabric hot rolled nonwoven fabrics, immersion non-woven fabrics, seaweed
Acid sodium aqueous solution, acrylic acid aqueous solution, initiator, water bath with thermostatic control equipment, drying equipment, disintegrating apparatus, press equipment, winding are set
It is standby；
The flask for accommodating sodium alginate aqueous solution (concentration 25g/L) is placed in heating water bath in water bath with thermostatic control equipment by second step,
Lead to nitrogen 15 minutes into flask, stirred during logical nitrogen, acrylic acid aqueous solution is sequentially added in whipping process, and (concentration is
41.5g/L, through in NaOH and 70%), (concentration is 6.15 × 10 to initiator-4The ammonium ceric nitrate of mol/L), control bath temperature is
50 DEG C, isothermal reaction three hours, it will obtain crushing after product is dehydrated with drying equipment by disintegrating apparatus, obtain powdered
Water-absorbing resin；
Third step, by polyvinyl alcohol emulsions (solid content 15%), polyacrylate dispersion (solid content 46%), pure water with 1:
The content ratio of 1:0.5 prepares mixed glue solution, the mixed proportion can guarantee adhesion property when mixed glue solution uses it is good, at
Softness after type is good；
4th step, coats mixed glue solution on fabric hot rolled nonwoven fabrics；
5th step uniformly sprinkles water-absorbing resin on the sticky surface of immersion non-woven fabrics；
6th step, make water-absorbing resin and mixed glue solution relatively by immersion non-woven fabrics and fabric hot rolled nonwoven fabrics through press equipment pressing at
Drying equipment drying is sent into after reason, the drying temperature of drying equipment is 120 DEG C, and drying time is 22 seconds, obtains sea water resistance and blocks water
Band；
7th step, winding device wind sea water resistance waterstop.
Embodiment 3: a kind of sea water resistance waterstop production technology, steps are as follows:
The first step prepares polyacrylate dispersion, polyvinyl alcohol emulsions, pure water, fabric hot rolled nonwoven fabrics, immersion non-woven fabrics, seaweed
Acid sodium aqueous solution, acrylic acid aqueous solution, initiator, water bath with thermostatic control equipment, drying equipment, disintegrating apparatus, press equipment, winding are set
It is standby；
The flask for accommodating sodium alginate aqueous solution (concentration 22g/L) is placed in heating water bath in water bath with thermostatic control equipment by second step,
Lead into flask nitrogen 15 minutes, is stirred during logical nitrogen, acrylic acid aqueous solution (concentration 45g/ is sequentially added in whipping process
L, through in NaOH and 70%), (concentration is 6.5 × 10 to initiator-4The ammonium ceric nitrate of mol/L), control bath temperature is 50 DEG C, permanent
Temperature reaction three hours, will obtain crushing after product is dehydrated with drying equipment by disintegrating apparatus, obtains powdered water suction
Resin；
Third step, by polyvinyl alcohol emulsions (solid content 25%), polyacrylate dispersion (solid content 50%), pure water with 1:
The content ratio of 1:0.5 prepares mixed glue solution, the mixed proportion can guarantee adhesion property when mixed glue solution uses it is good, at
Softness after type is good；
4th step, coats mixed glue solution on fabric hot rolled nonwoven fabrics；
5th step uniformly sprinkles water-absorbing resin on the sticky surface of immersion non-woven fabrics；
6th step, make water-absorbing resin and mixed glue solution relatively by immersion non-woven fabrics and fabric hot rolled nonwoven fabrics through press equipment pressing at
Drying equipment drying is sent into after reason, the drying temperature of drying equipment is 130 DEG C, and drying time is 18 seconds, obtains sea water resistance and blocks water
Band；
7th step, winding device wind sea water resistance waterstop.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of sea water resistance waterstop production technology, which comprises the following steps:
Step1. prepare polyacrylate dispersion, polyvinyl alcohol emulsions, pure water, fabric hot rolled nonwoven fabrics, immersion non-woven fabrics, alginic acid
Sodium water solution, acrylic acid aqueous solution, initiator, water bath with thermostatic control equipment, drying equipment, disintegrating apparatus, press equipment, winding are set
It is standby；
Step2. the water-bath sodium alginate aqueous solution in water bath with thermostatic control equipment leads to nitrogen 15 into the container of sodium alginate aqueous solution
Minute, it being stirred during logical nitrogen, acrylic acid aqueous solution, initiator is sequentially added in whipping process, control bath temperature is 50 DEG C,
Isothermal reaction three hours, it will obtain crushing after product is dehydrated with drying equipment by disintegrating apparatus, obtain powdered suction
Water-resin；
Step3. polyvinyl alcohol emulsions and polyacrylate dispersion allot mixed glue solution with the content ratio of 1:1 and pure water；
Step4. mixed glue solution is coated on fabric hot rolled nonwoven fabrics；
Step5. water-absorbing resin is uniformly sprinkled on the sticky surface of immersion non-woven fabrics；
Step6. make water-absorbing resin and mixed glue solution relatively by immersion non-woven fabrics and fabric hot rolled nonwoven fabrics through press equipment pressing at
It is sent into drying equipment drying after reason, sea water resistance waterstop is made；
Step7. winding device winds sea water resistance waterstop.
2. sea water resistance waterstop production technology according to claim 1, it is characterised in that: the acrylic acid uses preceding warp
In NaOH and 70%.
3. sea water resistance waterstop production technology according to claim 1, it is characterised in that: the initiator is cerous nitrate
Ammonium, the concentration of ammonium ceric nitrate are 6.0 × 10-4mol/L-6.5×10-4mol/L。
4. sea water resistance waterstop production technology according to claim 1, it is characterised in that: the acrylic acid aqueous solution concentration
For 40-45g/L, sodium alginate aqueous solution concentration is 20-25g/L.
5. sea water resistance waterstop production technology according to claim 1, it is characterised in that: the polyacrylate dispersion
Solid content is 40-50%.
6. sea water resistance waterstop production technology according to claim 1, it is characterised in that: the polyvinyl alcohol emulsions are consolidated
Content is 10-15%.
7. sea water resistance waterstop production technology according to claim 1, it is characterised in that: the drying temperature of the drying equipment
Degree is 100-130 DEG C.
8. sea water resistance waterstop production technology according to claim 7, it is characterised in that: drying time is 25-30 seconds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774975.2A CN110497635A (en) | 2019-08-21 | 2019-08-21 | Sea water resistance waterstop production technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910774975.2A CN110497635A (en) | 2019-08-21 | 2019-08-21 | Sea water resistance waterstop production technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032687A (en) * | 2021-11-12 | 2022-02-11 | 南通大学 | Preparation method and application of moisture-proof and mildew-proof resin |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032687A (en) * | 2021-11-12 | 2022-02-11 | 南通大学 | Preparation method and application of moisture-proof and mildew-proof resin |
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Application publication date: 20191126 |