CN2224877Y

CN2224877Y - Waterproof rolling material made of water expanding polymer

Info

Publication number: CN2224877Y
Application number: CN 95231299
Authority: CN
Inventors: 于天诗
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-02
Filing date: 1995-06-02
Publication date: 1996-04-17
Anticipated expiration: 2005-06-02

Abstract

The utility model relates to a waterproof rolling material made of water expanding polymer. The utility model is composed of three layers of materials, which are an upper layer, a middle layer, and a lower layer. The utility model is formed by the combination of the three layers, wherein, the upper and the lower layers are plastics film, and the middle layer is polymer blend which is composed of elastic polymer, strong water absorbing type polymer, inorganic filler, etc. The molecular chains of the strong water absorbing type polymer have a plurality of hydrophilic groups the volume of which expands after water absorption. When the waterproof rolling material has minor damage, extrusion force is generated between the molecules of the rolling material as a result of volume expansion of strong water absorbing type polymer, and thereby, damage is repaired, and water leakage does not occur. The utility model is used for waterproofing in civil engineering, and therefore, the utility model plays the role of self complementation for the minor damage, and use is convenient.

Description

Water-expansion polymer waterproof roll

The utility model relates to a kind of civil works waterproof roll, and particularly a kind of civil works is formed with the material of waterproof roll.

Existing civil works is all made with hydrophobic material with waterproof roll, and in a single day less breakage takes place this waterproof roll, will leak at breakage, and influence is used.

The purpose of this utility model is in order to overcome above-mentioned deficiency, proposes a kind ofly can produce waterproof roll from the benefit effect to less breakage.

The utility model is realized with the following method.

In the matrix material of waterproof roll, blend has the strong suction type polymer with hydrophilic radical, but because strong suction type polymer imbibition, after the expansion, intermolecular extruding force in the water-proof coil is increased, when waterproof roll generation minor damage, this extruding force can make breakage obtain automatically repairing and can not leak.

For realizing such scheme; water-expansion polymer waterproof roll is curled by thin slice shape material and forms; the thin slice shape material of coiled material is by upper, middle and lower-ranking thin slice shape material compound composition; upper and lower two layers of material all is a common plastic film; plastic sheeting has certain waterproof action and the effect of protection intermediate layer; the intermediate layer is a blend polymer, and elastomeric polymer, the polymer of suction type by force, inorganic filler and a little auxiliary etc. as the intermediate layer matrix material are arranged in the blend polymer.Elastic polymer matrix can keep the shape and the intensity in intermediate layer, on the strand of strong suction type polymer many hydrophilic radicals are arranged, suction back volume can expand, after the blend polymer suction, strong suction type polymer volume wherein expands, and the constancy of volume of elastic polymer matrix, thereby a kind of extruding force of intermolecular generation of blend polymer inside.When there is minor damage in the blend polymer intermediate layer, can less breakage automatically be repaired because of the extruding force that produces after the strong water absorbent polymer imbibition.

The utility model has the advantages that: with this waterproof roll during as the waterproof of civil works, when waterproof roll had minor damage, waterproof roll itself can auto-mending to minor damage, and can not leak, thereby easy to use.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the sectional drawing of water-expansion polymer waterproof roll thin slice.

Among Fig. 1, water-expansion polymer waterproof roll thin slice is by 1,2,3 compound compositions of upper, middle and lower-ranking thin slice shape material, and is upper and lower two-layer the 1, the 3rd, common plastic film, and as polyvinyl chloride or polyethylene sheeting, intermediate layer 2 is blend polymers.Elastomeric polymer, the polymer of suction type by force, inorganic filler and a little auxiliary as the intermediate layer matrix material are arranged in the blend polymer, the elastic polymer matrix material can be with rubber or rubber and plastic material, as the material of natural gum, rubber polymer, reclaimed rubber or rubber and haloflex or polyvinyl chloride etc. and usefulness; Strong suction type polymer is the polymer that many hydrophilic radicals are arranged on the strand, as has the polymer of following structural formula:

Above-mentioned polymer is the product of polyacrylonitrile hydrolysis under alkaline medium condition, and degree of hydrolysis is 90～98%, on its strand-CONH ₂,-COO ^-,-CONHCO-wait group is a hydrophilic radical; Inorganic filler can be swell soil, potter's clay etc., preferably swell soil; Auxiliary agent is the crosslinking agent of type polymer of absorbing water by force, and when to adopt the said hydrolyzed product be strong suction type polymer, auxiliary agent can adopt the salt of the above metal of divalence, and as alchlor, ferric trichloride, rare earth chloride etc., they can make the molecule crosslinked of said hydrolyzed product.

If the elastomeric polymer in the blend polymer is a reclaimed rubber, strong suction type polymer is the hydrolysate of above-mentioned polyacrylonitrile under alkaline medium condition, inorganic filler is a swell soil, and when auxiliary agent was alchlor, the weight portion of four kinds of materials was respectively 100,17～30,80～120 and 3～10.

The method for making of water-expansion polymer waterproof roll is: prepare the intermediate layer polymer blend earlier, again blend polymer is pressed into the thin slice of continuous length, be combined with each other with two layers of plastic thin films and blend polymer thin slice then, at last compound good thin slice shape material webs rolling.

A kind of preparation method of above-mentioned blend polymer is: earlier 10～20% aqueous solution blend of swell soil and above-mentioned polyacrylonitrile hydrolysate under alkaline medium condition, the pH value of adjusting blend is 6, in blend, add alchlor, make strong suction type polymer molecule crosslinked, swell soil and crosslinked strong suction type blend polymer drying, dry thing and reclaimed rubber blend, just can be made into a kind of blend polymer again.

Claims

1. water-expansion polymer waterproof roll, form by thin slice shape material is curling, it is characterized in that: the thin slice shape material of coiled material is by upper, middle and lower-ranking thin slice shape material compound composition, wherein upper and lower two-layer be plastic sheeting, the intermediate layer is a blend polymer, and elastomeric polymer, the polymer of suction type by force, inorganic filler and a little auxiliary as the intermediate layer matrix material are arranged in the blend polymer.

2. by the described waterproof roll of claim 1, it is characterized in that: the elastomeric polymer as the intermediate layer matrix material in the described intermediate layer polymer blend is a rubber, or the rubber and plastic material.

3. by the described waterproof roll of claim 2, it is characterized in that: described rubber is reclaimed rubber.

4. by claim 1 or 3 described waterproof rolls, it is characterized in that: the strong suction type polymer in the described intermediate layer polymer blend is the polymer with following structural formula, and this polymer is the product of polyacrylonitrile hydrolysis under alkali condition.

5. by the described waterproof roll of claim 4, it is characterized in that: the inorganic filler in the described intermediate layer polymer blend is a swell soil.

6. by the described waterproof roll of claim 5, it is characterized in that: the auxiliary agent in its mixed thing of described intermediate layer polymer is an alchlor.

7. by the described waterproof roll of claim 6, it is characterized in that: the weight portion of product, swell soil and the alchlor of the reclaimed rubber in the described intermediate layer polymer blend, polyacrylonitrile hydrolysis under alkali condition is respectively 100,17～30,80～120 and 3～10.

8. by the described waterproof roll of claim 7, it is characterized in that: described upper and lower two layers of plastic thin films is polyethylene or polyvinyl chloride film.