Rubber mix for production of waterproof materials (versions)

FIELD: rubber industry; production of elastomer compositions on base of ethylene-propylene-diene rubber; production of roofing materials for hydraulic insulation of buildings, bridges, tunnels, roof coats.

SUBSTANCE: proposed rubber mix contains the following components: ethylene-propylene-diene rubber, butyl rubber or regenerate on base of butyl rubber, anti-oxidant, plasticizing agent (paraffin, mineral oil, chloro-paraffin), commercial carbon, chalk and/or kaolin and bitumen, colophony or benzoic acid, if necessary. Rubber mix may also contain Captax (rubber accelerating agent), thiuram or zinc ethyl diethyl dithiocarbomate, antimony trioxide, aluminum hydroxide, stearic acid and zinc oxide at definite ratio. Rubber mix is prepared on standard equipment of rubber industry.

EFFECT: enhanced resistance to burning and frost.

4 cl, 4 tbl

 

The invention relates to the rubber industry, in particular the production of elastomeric compositions based on ethylene-propylene-diene rubber, and can be used in the production of polymer roll roofing and waterproofing materials used for waterproofing of buildings and structures, bridges, tunnels, roof coverings.

Known vulcanicola rubber mixture based on ethylene-propylene-diene rubber containing vulcanizing group, filler, plasticizer, processing AIDS (Prescription application to THE 381051868-88 Seals monolithic neformaly machines for automobile, tractor, agricultural, construction and road machinery).

A disadvantage of the known rubber compounds are poor technological properties.

Known rubber mixture based on ethylene-propylene-diene rubber (100 parts by weight), including zinc oxide (5-10 parts by weight), organic peroxide (5-7 parts by weight) -α,α'-bis-(tert-butyl-peroxy) -1,4-diisopropylbenzene, stearic acid (from 0.8 to 1.5 parts by weight), paraffin (5-10 parts by weight), flame retardant additive (100-210 parts by weight) alumina trihydrate, a modified methacrylic acid, silicone additive is about 0.5 to 2.5 parts by weight) - amoxicilkin, sulfur (0.3 to to 0.5 parts by weight) (SU 1549975, 1990).

Known rubber compound provides improved Agnes is Onesti while maintaining the high strength properties. It is intended primarily for fire-resistant rubber used in the manufacture of rubber tire and electrical products.

Known thermoplastic elastomer composition (rubber compound)capable of without pre-drying for multiple processing at temperatures 170-190°With preserving the operational properties of the material at the required level, comprising a mixture of polypropylene with low density polyethylene and ethylene-propylene-diene oil-filled rubber with certain of their value respectively 12-39:1-8-60-80, vulcanizing agent is sulfur in combination with primary and secondary accelerators, in which the use of substances, selected mainly from the class of terrasolid and thiazolo respectively with defined periods of induction and the ratio between them, as well as traditional supplements - zinc oxide and stearic acid, and also containing an antioxidant and a filler (EN 2069217, 1996).

Known composition is characterized by small particle size vulcanizing rubber, a high degree of vulcanization of the original rubber and increased hydrophobicity of the material. It does not initiate chemical processes crosslinking of the matrix polymer or graft, as evidenced by the almost complete quantitative showpage is their between the content source of rubber in the mixture and the proportion of gel-fraction, not soluble in boiling o-xylene, and the absence of PP - and PE-links in the insoluble product that allows you to recycle this song when forming its wheels at a lower temperature. However, this composition is intended for the manufacture of flexible parts used in the automotive, cable, footwear industry and construction.

Known rubber compound used for the manufacture of linings for ball mills operating during grinding of various materials at high temperatures, including synthetic rubber, for example, ternary ethylene-propylene-diene rubber modifier - disubstituted unsaturated diurethane, sulfur as a vulcanizing agent, a vulcanization accelerator, a vulcanization activator, an antioxidant, a dispersant, a filler, a plasticizer (EN 2028328, 1992).

Known composition provides improved physical and mechanical properties, reliability and durability of the rubber lining when working in conditions of abrasive wear at elevated temperatures, but is not intended to receive waterproofing coatings.

Known rubber compound comprising rubber with low neopredelennosti, which is used as butyl rubber or a mixture of ethylene-propylene rubber, SKEPT, vulcanizing the group is a mixture of sulfur, tour the mA and captax, zinc white, stearin, isoparaffin oils and active filler is carbon black DG-100 (SU 812800, 1980).

Use in a well-known rubber mixture as a plasticizer isoparaffin oils IPM-10 increases frost resistance rubbers obtained from it. However, this mixture is not intended to receive waterproofing products, as they do not have the necessary properties, low water absorption.

Closest to the technical essence and the achieved result is known rubber compound from a mixture of butyl rubber, reclaimed butyl rubber and thermoplastic elastomer - divinylacetylene or isoprenaline. Known rubber compound to obtain waterproofing coatings for building structures includes butyl rubber, thermoplastic elastomer definiltely or soprotivlenie, regenerate based on butyl rubber, the filler (chalk, carbon black, kaolin, asbestos chips), plasticizer (liquid paraffin, chloroparaffin, rubrics), curing agents (zinc oxide, 2-mercaptobenzthiazole, tetramethylsilane), antioxidant (Neeson D)optionally grafted copolymer of ethylene with chloropropionitrile (SU 765328, 1980).

Received from the specified well-known rubber waterproofing coating has good physical and mechanical properties and reduced stickiness, however, there is insufficient frost and due to the low adhesive capacity is fixed on the substrate, for example, on concrete base of the building structure only by means of bitumen-polymer putty.

The technical objective of the claimed invention to provide a rubber mixture for the production of roofing and waterproofing materials, which do not require vulcanization, with high resistance to burning and frost.

The goal of the project is achieved in that a rubber compound for waterproofing materials, comprising a mixture of rubber, antioxidant, plasticizer, carbon black, kaolin and/or chalk, contains as rubber mix a mixture of ethylene-propylene-diene rubber, butyl rubber or regenerate based on butyl rubber as a plasticizer paraffin and mineral oil, and possibly chloroparaffin addition to the bitumen and, if necessary, rosin or benzoic acid in the following ratio of components, parts by weight:

ethylene-propylene-diene rubber50-100
butyl rubber and/or regenerate based on butyl rubber50-120
antioxidant1-5
mineral oil5-25
paraffin5-15
chloroparaffin0-20
carbon100-200
bitumen30-90
kaolin and/or chalk40-100
rosin or benzoic acid0-10

The rubber mixture can additionally include vulcanizing agents captax and thiuram or diethyldithiocarbamate zinc, as well as stearic acid and zinc oxide in the following ratio of the components, parts by weight:

captax1-5
thiuram or diethyldithiocarbamate zinc2-5
stearic acid2-7
zinc oxide1-5

The goal of the project is achieved and also other rubber mixture to obtain waterproofing materials, a variation of the rubber mixtures according to the invention, comprising a mixture of rubber, antioxidant, plasticizer, carbon black, kaolin, at the same time as rubber mix contains a mixture of ethylene-propylene-diene rubber, butyl rubber or regenerate based on butyl rubber, chlorinated paraffin wax plasticizer, optionally contains antimony trioxide, and if necessary, the aluminum hydroxide and the bitumen in the following the ratio of the attachment of components, parts by weight of

ethylene-propylene-diene rubber50-100
butyl rubber or regenerate based on butyl rubber50-120
antioxidant1-5
chloroparaffin55-90
carbon100-150
kaolin60-140
the antimony trioxide30-70
aluminum hydroxide0-70
bitumen0-50

The rubber mixture can additionally include vulcanizing agents captax and thiuram or diethyldithiocarbamate zinc, as well as stearic acid and zinc oxide in the following ratio of the components, parts by weight:

captax1-5
thiuram or diethyldithiocarbamate zinc2-5
stearic acid2-7
zinc oxide1-5

As the ethylene-propylene-diene rubber used Skepti different brands, for example, SKEPT-40, Sept-50; as butyl rubber is used, for example, butyl rubber 1675. As regenerate based on butyl rubber use the regenerate, which is the product of the processing of the cooking chamber, diaphragms and other products PA the basis of butyl rubber. It is characterized, for example, by the following indicators:

the content of volatile substances at 150°With no more than, %1,20
the ash content, not more %14,00
the Mooney viscosity, in arbitrary units25-55
tensile strength at break of not less than, MPa (kgf/cm)4,5 (45)
elongation not less, %400

In the preparation of variants of the rubber mixtures according to the invention, in particular, use of carbon black grades P-324 P-803; bitumen of various grades - bitumen, bitumen road; as butyl rubber (a product of co-polymerization of isobutylene and isoprene) - butylketone, for example, brands 1675, BC-C, BC-N; mineral oil MO-s; chloroparaffin solid HP-1100, chloroparaffin liquid CP-470; tirami - tetramethyldisilane, tetradecyltrimethyl (GOST 740-41). As an antioxidant rubber mixture contains antioxidants such as naphthas-2 (N-phenylnaphthylamine-2), Neeson And (N-phenylnaphthylamine-1), Neeson A1 (N-(3-hydroxybutylidene) naphtylamine-1) and other (Handbook edited Ipinalabas "Chemical additives to polymers". M, Chemistry, 1981, pp.5-9, 11).

The rubber mixture (options) on the image is meniu prepared by the conventional methods on rollers or rubber mixer (traditional equipment in the rubber industry).

Get waterproofing material (coating) in the following way. All the ingredients are mixed in a rubber mixer. Received not yet vulcanized (nedofokusirovkoy) rubber mixture is treated in the mill and serves for further processing on the calender. Otsilindrovannoe cloth roll to roll with cushioning material. When the vulcanization process in the production of roofing and waterproofing products is not required.

The waterproofing coating is fixed on a protected surface (concrete) using a variety of adhesives, mastics.

The absence of the material manufacturing stage vulcanization greatly simplifies the process of obtaining it. The use of ultraparallel vulcanization (thiuram, cimat) provides a slow process structuring in operation.

If necessary, a rubber compound reinforced or duplicate woven and non-woven fabrics or nets based on polymer and glass fibers, while the mechanical properties are determined by the form of the reinforcing material.

Laying invented material can be carried out in the following ways: membrane (ballast system), by means of mechanical fastening, an exhaustive or local bonding. A particular advantage of the invented material has the paving is of receivine in the that he, being unvulcanized, has greater ease of bonding, as compared with vulcanized materials, which allows to use a wider range of adhesive mastics, while achieving high technological and operational indicators

Table 1
Examples of real recipes rubber mixture (first version):
Ingredient(parts by weight)(parts by weight)(parts by weight)
Ethylenepropylene rubber triple SKEPT-4050100100
Butyl rubber0500
Reclaim based on butyl rubber1000100
Rosin050
Benzoic acid500
Naphthas-2444
Paraffin101010
Chloroparaffin01010
Bitumen305070
Carbon black is -324 755060
Carbon black P-803507590
Chalk050100
Kaolin100500
Oil MO-s101510
Captax220
Thiuram200
Diethyldithiocarbamate zinc020
Zinc oxide330
Stearic acid550

Give the material high resistance to burning is ensured by the joint introduction of a mixture of several antipyrine (antiferromag composition), which include aluminum hydroxide, chlorinated paraffin wax of different brands and trioxide of antimony. In addition, in the formulation of the rubber maximally reduces the amount of combustible ingredients, or fillers are used, does not support combustion. The performance of the resulting material remains at a sufficiently high level./p>

When using the invented formulation is a material that matches the group of combustibility G-2 GOST 30244-94 (moderately combustible according to SNiP 21-01-97); group flame spread - WP1 according to GOST R 51032-97 (not the spread of fire according to SNiP 21-01-97); group Flammability - B2 according to GOST 30402-96 (moderately flammable according to SNiP 21-01-97). These characteristics are provided in the test material, glued on a noncombustible base.

Table 3
Examples of real recipes rubber mixture (the second option).
Ingredient(parts by weight)(parts by weight)(parts by weight)
Ethylenepropylene rubber triple SKEPT-4050100100
Butyl rubber0500
Reclaim based on butyl rubber1000100
The aluminum hydroxide04050
The antimony trioxide453030
Naphthas-2 (antioxidant)333
Chloroparaffin solid CP-11005035 40
Chloroparaffin liquid CP-470352015
Bitumen01020
Carbon black P-324507070
Carbon black P-803806030
Kaolin6080120
Captax220
Thiuram020
Diethyldithiocarbamate zinc (cimat)200
Zinc oxide330
Stearic acid550

1. The rubber mixture to obtain waterproofing materials, comprising a mixture of rubber, antioxidant, plasticizer, carbon black, kaolin and/or chalk, characterized in that it comprises a mixture of rubber mixture of ethylene-propylene-diene rubber, butyl rubber and/or regenerate based on butyl rubber as a plasticizer paraffin and mineral oil, and possibly chloroparaffin, additional bitumen and when the mu is the necessity of rosin or benzoic acid in the following ratio of components, parts by weight of:

Ethylene-propylene-diene rubber50-100
Butyl rubber and/or regenerate based on butyl rubber50-120
Antioxidant1-5
Mineral oil5-25
Paraffin5-15
Chloroparaffin0-20
Carbon100-200
Bitumen30-90
Kaolin and/or chalk40-100
Rosin or benzoic acid0-10

2. The rubber mixture to obtain waterproofing materials according to claim 1, characterized in that it further comprises vulcanizing agents captax and thiuram or diethyldithiocarbamate zinc, as well as stearic acid and zinc oxide in the following ratio of the components, parts by weight:

Captax1-5
Thiuram or diethyldithiocarbamate zinc2-5
Stearic acid2-7
Zinc oxide1-5

3. The rubber mixture to obtain waterproofing materials, comprising a mixture of rubber, antioxidant, plasticizer, those who practical carbon, kaolin, characterized in that it comprises a mixture of rubber mixture of ethylene-propylene-diene rubber, butyl rubber or regenerate based on butyl rubber as a plasticizer chloroparaffin, further comprises antimony trioxide, and if necessary, the aluminum hydroxide and the bitumen in the following ratio of components, parts by weight of

Ethylene-propylene-diene rubber50-100
Butyl rubber or regenerate based on butyl rubber50-120
Antioxidant1-5
Chloroparaffin55-90
Carbon100-150
Kaolin60-140
The antimony trioxide30-70
Aluminum hydroxide0-70
Bitumen0-50

4. The rubber mixture to obtain waterproofing materials according to claim 3, characterized in that it further comprises vulcanizing agents captax and thiuram or diethyldithiocarbamate zinc, as well as stearic acid and zinc oxide in the following ratio of the components, parts by weight:

Captax1-5
Thiuram or diethyldithiocarbamic is at zinc 2-5
Stearic acid2-7
Zinc oxide1-5



 

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