WO2018000714A1 - Hose and manufacturing method therefor - Google Patents

Abstract

Disclosed is a hose. The hose is prepared from the following raw materials in parts by weight: 90-110 parts of a chlorinated polyethylene rubber, 8-15 parts of a hot melt glue, 6-12 parts of active MgO, 5-6 parts of a lubricating wax, 7-8 parts of an active agent, 84-94 parts of a reinforcing agent, 35-45 parts of dioctyl phthalate, 10-13 parts of a colorant, 7-13 parts of a resin reinforcing agent, 2-3 parts of a vulcanizing agent TDDS, 1-2 parts of an accelerant BF, 0.5-1 parts of insoluble S and 0.5-2 parts of 2,2'-dithiodibenzothiazole. In the present invention, the selected materials are of the best quality, a scientific processing method is adopted, and the thickness of an inner covering layer and the thickness of an outer covering layer are reduced, but the performance can meet the following requirements: the peel strength of a glue and a polyester framework ribbon cartridge layer is ≥30 N/25 mm, the tensile strength of a sizing material is 6-8 MPa, and the elongation is ≥400％. Moreover, the hose has a good heat resistance, an ozone resistance, a weather resistance, an oil resistance, a chemical medicine resistance and a flame resistance, can satisfy the fire hose covering requirement, and has a low cost and a long service life.

Description

Hose and method of manufacturing same Technical field

The invention belongs to the field of rubber plastic polymer application, and particularly relates to a hose and a manufacturing method thereof.

Background technique

Chlorinated polyethylene rubber (CM rubber) is a new synthetic material made from HDPE by random chlorination. It is a terpolymer composed of ethylene, vinyl chloride and 1,2-dichloroethylene segments. Its molecular The main chain is composed of a carbon-carbon single bond and is a saturated chlorine-containing rubber. Its molecular structure determines its excellent properties: good heat resistance, ozone resistance, weather resistance and oil resistance. , chemical resistance, low temperature resistance, bacteria and microbial resistance as well as electrical and flame retardant, more importantly, the source of CM rubber is widely stable (manufactured by many domestic companies), and the price is low (about NBR / PVC material) Half of the price), the basic physical properties of PVC/PVC rubber compound for inner and outer lining rubber are as follows:

Tensile Strength	Elongation	Tear off permanent deformation	Inner peel strength	Outer peel strength
8MPa	400%	60%	20N/25mm	20N/25mm

Therefore, the use of CM instead of NBR/PVC will bring huge economic benefits, which determines the wide application of CM rubber. It has been widely used in wire and cable, molded products and high-pressure hose rubber, etc. However, the product structure of CM rubber application field Either pure rubber, or the skeleton material is metal. There is no product that is bonded to polyester filament. Due to the late start of CM, the formulation, process and materials used are lagging behind, and the thiadiazole vulcanizing agent used in low temperature vulcanization is When the rubber and polyester common bonding system is present, failure will occur, which seriously hinders the adhesion of the CM to the polyester skeleton.

Summary of the invention

In order to solve the above problems, the present invention discloses a hose and a manufacturing method thereof, and provides a CM rubber compound for a fire hose in view of the deficiencies in the prior art CM rubber and polyester fiber bonding technology.

In order to achieve the above object, the technical solution of the present invention is as follows:

A hose made of the following raw materials by weight: chlorinated polyethylene rubber: 90-110 parts, hot melt adhesive: 8-15 parts, active MgO: 6-12 parts, lubricating wax: 5-6 parts, Active agent: 7-8 parts, reinforcing agent: 84-94 parts, dioctyl phthalate: 35-45 parts, coloring agent: 10-13 parts, resin reinforcing agent: 7-13 parts, vulcanizing agent TDDS: 2-3 parts, accelerator BF: 1-2 parts, insoluble S: 0.5-1 part, 2, 2'-dithiodibenzothiazole: 0.5-2 parts.

The lubricating wax of the present invention is a polyethylene wax.

The active agent of the present invention is a polyoxyalkylene ether surfactant, a polyoxyalkylene ester surfactant, a saccharide fatty acid ester surfactant, and an alkyl polyglycoside surfactant.

The reinforcing agent of the present invention is carbon black and mica powder having a mass ratio of 1.25:1.

The coloring agent of the present invention is oil-soluble black or too blue.

The resin reinforcing agent of the present invention is trimethylolpropane trimethacrylate.

A method of manufacturing a hose, comprising the steps of:

(1) Weighing parts: 90-110 parts of chlorinated polyethylene rubber, 8-15 parts of hot melt adhesive, 6 parts of active MgO, 5-6 parts of lubricating wax, 7-8 parts of active agent, accelerator BF1-2 a portion, a coloring agent 10-13 parts, and a resin reinforcing agent 7-13 parts are put into an internal mixer for 1-3 minutes;

(2) further adding 84-94 parts of reinforcing agent and 35-45 parts of dioctyl phthalate into an internal mixer, and heating to 110±5 ° C for 6-8 minutes;

(3) Lifting the discharge material, cooling the lower piece into sections with an open mill, and parking each section for 4-5 small Time;

(4) After 100 mesh filter of a piece of rubber, add 2-3 parts of sulfiding agent TDDS, insoluble S0.5-1 part and 2-2'-dithiodibenzothiazole 0.5-2 parts by weight, keep The pressure is 0.4-0.6 MPa. After 3 passes of thin pass, the lower piece is to be extruded.

The beneficial effects of the invention are:

The hose of the invention has excellent material selection and adopts a scientific processing method, and the inner and outer cover layers are thinned, but the performance meets the requirements: the peeling strength of the rubber and polyester skeleton belt layer is ≥30N/25mm, and the tensile strength of the rubber material is obtained. 6-8MPa, elongation ≥400%, and good heat resistance, ozone resistance, weather resistance, oil resistance, chemical resistance, and flame retardancy, can meet fire hose cover requirements, low cost ,long lasting.

detailed description

Example 1

A method for manufacturing a hose according to this embodiment includes the following steps:

(1) Weighing parts: 90 parts of chlorinated polyethylene rubber, 15 parts of hot melt adhesive, 6 parts of active MgO, 6 parts of lubricating wax, 7 parts of active agent, BF2 part of accelerator, 10 parts of coloring agent, resin reinforcing agent 13 Mixing in an internal mixer for 1 minute;

(2) further adding 94 parts of reinforcing agent and 35 parts of dioctyl phthalate into an internal mixer, and heating to 115 ° C for 6 minutes;

(3) Lifting the discharge, cooling the lower piece into sections with an open mill, and parking each section for 5 hours;

(4) After 100 mesh filter of a piece of rubber, 2 parts of sulfiding agent TDDS, insoluble S1 part and 0.5 part of 2,2'-dithiodibenzothiazole are added in parts by weight to form vulcanization, maintaining a pressure of 0.6 MPa. After 3 passes, the next piece is to be extruded.

The basic physical properties of the extrusion process and materials are as follows:

Tensile Strength	Elongation	Tear off permanent deformation	Inner peel strength	Outer peel strength
6.5MPa	433.5%	39.3%	33N/25mm	51N/25mm

Example 2

A method for manufacturing a hose according to this embodiment includes the following steps:

(1) Weighing parts: 110 parts of chlorinated polyethylene rubber, 8 parts of hot melt adhesive, 12 parts of active MgO, 5 parts of lubricating wax, 8 parts of active agent, BF1 part of accelerator, 13 parts of coloring agent, resin reinforcing agent 7 Mixing in an internal mixer for 3 minutes;

(2) further adding 84 parts of reinforcing agent and 45 parts of dioctyl phthalate into an internal mixer, and heating to 105 ° C for 8 minutes;

(3) Lifting the discharge material, cooling the lower piece into sections with an open mill, and parking each section for 4 hours;

(4) After 100 mesh filter of one piece of rubber, 3 parts of sulfiding agent TDDS, insoluble S0.5 part and 2 parts of 2,2'-dithiodibenzothiazole are added in parts by weight to form vulcanization, maintaining pressure of 0.4 MPa. After 3 passes through the thin pass, the next piece is to be extruded.

The basic physical properties of the extrusion process and materials are as follows:

Tensile Strength	Elongation	Tear off permanent deformation	Inner peel strength	Outer peel strength
7.6MPa	445%	41%	39.6N/25mm	48N/25mm

Example 3

A method for manufacturing a hose according to this embodiment includes the following steps:

(1) Weighing parts: 100 parts of chlorinated polyethylene rubber, 12 parts of hot melt adhesive, 10 parts of active MgO, 5.5 parts of lubricating wax, 7.5 parts of active agent, 1.5 parts of accelerator BF, 12 parts of coloring agent, resin reinforcement 10 parts of the agent was mixed into an internal mixer for 2 minutes;

(2) Add 88 parts of reinforcing agent and 40 parts of dioctyl phthalate into the internal mixer. Heating to 110 ° C for 6-8 minutes;

(3) Lifting the discharge, cooling the lower piece into sections with an open mill, and parking each section for 4.5 hours;

(4) After 100 mesh filter of a piece of rubber, 2.5 parts of TCDS vulcanizing agent, 0.5 parts of insoluble S and 0.5 parts of 2,2'-dithiodibenzothiazole are added in parts by weight to form pressure vulcanization and maintain pressure. 0.5MPa, after 3 passes of thin pass, the next piece is to be extruded.

The basic physical properties of the extrusion process and materials are as follows:

Claims (7)

1. A hose characterized by being made of the following raw materials by weight: chlorinated polyethylene rubber: 90-110 parts, hot melt adhesive: 8-15 parts, active MgO: 6-12 parts, lubricating wax: 5 -6 parts, active agent: 7-8 parts, reinforcing agent: 84-94 parts, dioctyl phthalate: 35-45 parts, coloring agent: 10-13 parts, resin reinforcing agent: 7-13 Parts, vulcanizing agent TDDS: 2-3 parts, accelerator BF: 1-2 parts, insoluble S: 0.5-1 part, 2, 2'-dithiodibenzothiazole: 0.5-2 parts.
2. A hose according to claim 1, wherein said lubricating wax is a polyethylene wax.
3. A hose according to claim 1, wherein said active agent is a polyoxyalkylene ether surfactant, a polyoxyalkylene ester surfactant, a saccharide fatty acid ester surfactant, and an alkyl group. One of the glycoside surfactants.
4. A hose according to claim 1, wherein said reinforcing agent is carbon black and mica powder having a mass ratio of 1.25:1.
5. A hose according to claim 1 wherein said colorant is oil soluble black or too blue.
6. A hose according to claim 1, wherein said resin reinforcing agent is trimethylolpropane trimethacrylate.
7. A method of manufacturing a hose, comprising: the following steps:

   (1) Weighing parts: 90-110 parts of chlorinated polyethylene rubber, 8-15 parts of hot melt adhesive, 6 parts of active MgO, 5-6 parts of lubricating wax, 7-8 parts of active agent, accelerator BF1-2 a portion, a coloring agent 10-13 parts, and a resin reinforcing agent 7-13 parts are put into an internal mixer for 1-3 minutes;

   (2) further adding 84-94 parts of reinforcing agent and 35-45 parts of dioctyl phthalate into an internal mixer, and heating to 110±5 ° C for 6-8 minutes;

   (3) Lifting the discharge material, cooling the lower piece into segments with an open mill, and parking each section for 4-5 hours;

   (4) After 100 mesh filter of a piece of rubber, add 2-3 parts of sulfiding agent TDDS, insoluble S0.5-1 part and 2-2'-dithiodibenzothiazole 0.5-2 parts by weight, keep The pressure is 0.4-0.6 MPa. After 3 passes of thin pass, the lower piece is to be extruded.