CN110885552A - Sulfur-free nylon material for oil delivery hose - Google Patents

Abstract

The invention provides a sulfur-free nylon material for an oil delivery hose, which is prepared from the following raw materials: 30-70 parts of copolymerized high-viscosity nylon 1012 resin; 30-70 parts of nylon elastomer; 0-20 parts by weight of maleic anhydride grafted elastomer; 0.3-1 part of antioxidant; 0.3-1 part by weight of lubricant, compared with the prior art, the invention has the following beneficial effects: the self-synthesized copolymerized high-viscosity nylon 1012 resin is used as a base material, and a proper amount of related and preferable sulfur-free auxiliary agents such as a toughening agent, an antioxidant, a lubricant and the like are added, so that a sulfur-free nylon hose material with the advantages of environmental protection, good flexibility and excellent processing performance is prepared by using a double-screw extrusion mechanism.

Description

Sulfur-free nylon material for oil delivery hose

Technical Field

The invention relates to a sulfur-free oil delivery hose nylon material, belonging to the technical field of chemical industry.

Background

At present, nylon hose materials produced at home and abroad mostly adopt sulfur-containing benzene sulfonamide softeners, related products manufactured by the hose materials can be partially separated out during use, and the hose materials are adopted for oil delivery, particularly gasoline and diesel oil products for vehicles, so that the sulfur content of related oil products can be increased, the quality of the related oil products is reduced, the pollution of tail gas discharged by the related vehicles to the environment is increased, and more serious environment pollution is caused. Due to the material reason, the conveying pipelines adopted by the gasoline and diesel oil for the related vehicles at present are mostly made of vulcanized rubber, the environmental protection property is poor, the sulfur content of the conveyed gasoline or diesel oil is increased after long-term use, the quality of the oil is influenced, and the pollution degree of the automobile exhaust emission is further increased. At present, the country and the society pay more and more attention to environmental protection, wherein the pollution control on the tail gas emission of vehicles is more and more strict, and the requirements on the quality of oil products are higher and higher, so that the application of the sulfur-free nylon hose material for manufacturing the sulfur-free and more environment-friendly oil conveying pipeline is also more and more extensive, and the sulfur-free nylon hose material has good market application prospect.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a sulfur-free nylon material for an oil delivery hose to solve the problems in the background art.

In order to achieve the purpose, the invention is realized by the following technical scheme: a sulfur-free oil delivery hose nylon material is composed of the following raw materials:

further, the total amount of the copolymerized high-viscosity nylon 1012 resin, the nylon elastomer and the maleic anhydride grafted elastomer is 100 parts, and when the nylon elasticity part is more than 30 parts, the part exceeding 30 parts is replaced by the maleic anhydride grafted elastomer.

Further, the preparation method comprises the following steps: firstly, tackifying the copolymerized high-viscosity nylon 1012 resin and the nylon elastomer to relevant melt indexes by a solid-phase tackifying technology, and then discharging the materials for moisture-proof storage for later use;

then, 70 kg of tackified copolymerized high-viscosity nylon 1012 resin, 30 kg of nylon elastomer, 0.3 kg of antioxidant and 0.3 kg of lubricant are sequentially added into a high-speed mixer to be subjected to high-speed mixing for 3min, and then the materials are discharged for later use;

setting temperature of the extruder: feeding section 150 ℃, melting section 200-: 15 HZ;

after the temperature of each section of the extruder reaches the set temperature and the screw rod can be rotated by hands, cleaning the equipment, adding the mixed material into the extruder for mixing, and performing traction cooling, air drying and granulation when the standby head can stably extrude material strips;

drying the material at 80 deg.C until the water content is within 0.1%, discharging, and damp-proof packaging.

The invention has the beneficial effects that: the sulfur-free nylon hose material is prepared by taking the autonomously synthesized copolymerized high-viscosity nylon 1012 resin as a base material, adding a proper amount of related and preferable sulfur-free auxiliary agents such as a toughening agent, an antioxidant and a lubricant, and utilizing a double-screw extrusion mechanism, and has the advantages of environmental protection, good flexibility and excellent processing performance.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The invention provides a technical scheme that: a sulfur-free oil delivery hose nylon material is composed of the following raw materials:

the total amount of the copolymerized high-viscosity nylon 1012 resin, the nylon elastomer and the maleic anhydride grafted elastomer is 100 parts, and when the elastic part of the nylon is more than 30 parts, the part exceeding 30 parts is replaced by the maleic anhydride grafted elastomer.

As an embodiment of the present invention: example 1: firstly, tackifying relevant copolymerized high-viscosity nylon 1012 resin and nylon elastomer to relevant melt fingers by a self-induced solid-phase tackifying technology, and then discharging the materials for moisture-proof storage for later use.

Then 70 kg of tackified copolymerized high-viscosity nylon 1012 resin, 30 kg of nylon elastomer, 0.3 kg of antioxidant and 0.3 kg of lubricant are sequentially added into a high-speed mixer to be subjected to high-speed mixing for 3min, and then the materials are discharged for standby.

Setting temperature of the extruder: feeding section 150 ℃, melting section 200-: 15HZ

After the temperature of each section of the related extruder reaches the set temperature and the screw rod can be rotated by hands, the mixed materials are added into the extruder for mixing after the related raw materials are used for cleaning the equipment, and when the standby head can stably extrude material strips, the materials are dragged, cooled, air-dried and granulated.

Drying the material at 80 deg.C until the water content is within 0.1%, discharging, and damp-proof packaging. The performance index of the product is shown in the following table.

Example 2: 50 kg of tackified nylon 1012 resin, 50 kg of nylon elastomer, 0.6 kg of antioxidant and 0.6 kg of lubricant are sequentially added into a high-speed mixer to be mixed for 5min, and then the mixture is discharged for standby.

Setting temperature of the extruder: the feeding section is 170 ℃, the melting section is 215-: 30HZ

Drying the material at 90 deg.C until the water content is within 0.1%, discharging, and damp-proof packaging.

Otherwise, the same procedure as in example 1 was repeated. The performance index of the product is shown in the following table.

Example 3: and sequentially adding 30 kg of tackified nylon 1012 resin, 70 kg of nylon elastomer, 1 kg of antioxidant and 1 kg of lubricant into a high-speed mixer, high-speed mixing for 8min, and discharging for later use.

Setting temperature of the extruder: the feeding section is 190 ℃, the melting section is 230-: 45HZ

Drying the material at 100 deg.C until the water content is within 0.1%, discharging, and damp-proof packaging.

Otherwise, the same procedure as in example 1 was repeated. The performance index of the product is shown in the following table.

Example 4: 50 kg of tackified nylon 1012 resin, 40 kg of nylon elastomer, 10 kg of maleic anhydride grafted elastomer, 0.6 kg of antioxidant and 0.6 kg of lubricant are sequentially added into a high-speed mixer to be subjected to high mixing for 5min, and then the materials are discharged for standby.

The rest is the same as example 2. The performance index of the product is shown in the following table.

Example 5: 50 kg of tackified nylon 1012 resin, 30 kg of nylon elastomer, 20 kg of maleic anhydride grafted elastomer, 0.6 kg of antioxidant and 0.6 kg of lubricant are sequentially added into a high-speed mixer to be subjected to high-speed mixing for 5min, and then the materials are discharged for later use.

The rest is the same as example 2. The performance index of the product is shown in the following table.

Example 6: and sequentially adding 30 kg of tackified nylon 1012 resin, 50 kg of nylon elastomer, 20 kg of maleic anhydride grafted elastomer, 1 kg of antioxidant and 1 kg of lubricant into a high-speed mixer, high-speed mixing for 8min, and discharging for later use.

The rest is the same as example 3. The performance index of the product is shown in the following table.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (3)

1. The sulfur-free nylon material for the oil delivery hose is characterized in that: the material is composed of the following raw materials:

2. the nylon material for sulfur-free oil hoses as claimed in claim 1, wherein: the total amount of the copolymerized high-viscosity nylon 1012 resin, the nylon elastomer and the maleic anhydride grafted elastomer is 100 parts, and when the elastic part of the nylon is more than 30 parts, the part exceeding 30 parts is replaced by the maleic anhydride grafted elastomer.

3. The nylon material for sulfur-free oil hoses as claimed in claim 1, wherein: prepared by the following steps: firstly, tackifying the copolymerized high-viscosity nylon 1012 resin and the nylon elastomer to relevant melt indexes by a solid-phase tackifying technology, and then discharging the materials for moisture-proof storage for later use;

then, 70 kg of tackified copolymerized high-viscosity nylon 1012 resin, 30 kg of nylon elastomer, 0.3 kg of antioxidant and 0.3 kg of lubricant are sequentially added into a high-speed mixer to be subjected to high-speed mixing for 3min, and then the materials are discharged for later use;

setting temperature of the extruder: feeding section 150 ℃, melting section 200-: 15 HZ;

after the temperature of each section of the extruder reaches the set temperature and the screw rod can be rotated by hands, cleaning the equipment, adding the mixed material into the extruder for mixing, and performing traction cooling, air drying and granulation when the standby head can stably extrude material strips;

drying the material at 80 deg.C until the water content is within 0.1%, discharging, and damp-proof packaging.