阅读说明：本技术 一种杜仲橡胶海绵的胶料及其制备方法 (Rubber material of eucommia rubber sponge and preparation method thereof ) 是由 董海亚 胡学军 马静 章毅鹏 于 2019-07-31 设计创作，主要内容包括：本发明公开了一种杜仲橡胶海绵的胶料,各组分及各组分所占质量份如下：杜仲橡胶100份,氧化锌2-7份,硬脂酸0.5-3份,防老剂0.5-5份,油30-100份,填料0-60份,发泡剂3-12份,促进剂1-4份,硫磺0.5-4份；本发明还公开了上述的杜仲橡胶海绵的胶料的制备方法,包括如下步骤：1)烘胶；2)配料；3)塑炼；4)混炼；5)停放；6)硫化发泡。本发明首次提出了一种杜仲橡胶海绵胶料及其制备方法,填补了战略储备资源杜仲橡胶研究空白。(The invention discloses a rubber material of eucommia ulmoides rubber sponge, which comprises the following components in parts by mass: 100 parts of eucommia rubber, 2-7 parts of zinc oxide, 0.5-3 parts of stearic acid, 0.5-5 parts of an anti-aging agent, 30-100 parts of oil, 0-60 parts of a filler, 3-12 parts of a foaming agent, 1-4 parts of an accelerator and 0.5-4 parts of sulfur; the invention also discloses a preparation method of the rubber material of the eucommia ulmoides rubber sponge, which comprises the following steps: 1) drying the glue; 2) preparing materials; 3) plasticating; 4) mixing; 5) parking; 6) and (4) vulcanizing and foaming. The invention provides the eucommia ulmoides rubber sponge rubber material and the preparation method thereof for the first time, and fills the blank of research on strategic reserve resources of eucommia ulmoides rubber.)

1. the rubber material of the eucommia ulmoides rubber sponge is characterized by comprising the following components in parts by mass:

2. The composition of eucommia ulmoides rubber sponge according to claim 1, wherein the anti-aging agent is a rubber general-purpose anti-aging agent.

3. The composition of eucommia ulmoides rubber sponge according to claim 1, wherein the oil is a non-polar oil commonly used in the art.

4. the compound of eucommia ulmoides rubber sponge according to claim 1, wherein the filler is general inorganic filler or carbon black.

5. The compound of eucommia ulmoides rubber sponge as claimed in claim 1, wherein the foaming agent is azo, benzenesulfonyl hydrazide or urea foaming agent.

6. The composition of eucommia ulmoides rubber sponge according to claim 1, wherein the accelerator is a sulfenamide accelerator or is used in combination with guanidine, thiazole or thiuram.

7. A preparation method of a rubber material of eucommia ulmoides rubber sponge is characterized by comprising the following steps of:

1) Drying the glue: placing the eucommia rubber in an environment with the temperature T being more than or equal to 60 ℃ and less than or equal to 80 ℃ to be baked for more than 1 h;

2) Preparing materials: accurately metering each component of the sizing material according to a formula and uniformly mixing the components;

3) Plasticating: plasticating by using an open mill or an internal mixer;

4) Mixing: after plasticating, mixing by using an open mill or an internal mixer for multi-section mixing;

5) Parking: standing for 24-168 hours in an environment with the temperature of less than 37 ℃ after mixing;

6) and (3) vulcanization foaming: and after the parking is finished, adopting mould pressing vulcanization foaming or non-mould pressing vulcanization foaming.

8. The method for preparing the rubber compound of the eucommia ulmoides rubber sponge according to claim 7, wherein when an open mill is adopted for plastication in the step 3), the roll temperature is less than 70 ℃, the roll spacing is less than 0.3mm, and the plastication is carried out for 7-30 times; when an internal mixer is adopted for plasticating, the rubber discharge temperature is less than 150 ℃, and the plasticating time is 5-13 min.

9. the method for preparing the rubber compound of the eucommia ulmoides rubber sponge according to claim 7 or 8, wherein the number of the mixing stages in the step 4) at least comprises a first-stage mixing and a second-stage mixing, both the first-stage mixing and the second-stage mixing are carried out by adopting an open mill mixing or an internal mixer, the rubber compound is placed for 1 to 7 days after passing through a lower sheet after the first-stage mixing, and the rubber compound is placed for 1 to 7 days after being triangularly wrapped and discharged after the second-stage mixing.

10. The method for preparing the rubber compound of the eucommia ulmoides rubber sponge according to claim 9, wherein when the first-stage mixing in the step 4) is performed by using an open mill, the feeding sequence is rubber compound → zinc oxide, stearic acid → anti-aging agent → filler accounting for 30-70% of the total filler mass fraction → oil → the rest of the filler → oil → accelerator, sulfur and foaming agent, and the mixing process is performed according to a conventional rubber mixing process; when the first-stage mixing is carried out by adopting an internal mixer, the time is 5-13min, the rubber discharge temperature is less than 140 ℃, the feeding sequence is the same as that of an open mill, the internal mixer needs to be matched with the open mill for use during mixing, the accelerator, the sulfur and the foaming agent need to be added into the open mill, and the roller temperature needs to be less than 90 ℃.

Technical Field

The invention relates to the field of rubber sponge materials, in particular to a rubber material of eucommia ulmoides rubber sponge and a preparation method thereof.

background

The sponge is a widely used porous low-density material, has the characteristics of heat preservation, heat insulation, sound absorption, shock absorption, flame retardance, static prevention, good air permeability and the like, and is widely used in various industries.

The eucommia ulmoides tree is a special tree species in China. The eucommia rubber is a natural biological high molecular material extracted from bark, leaves or tree species of an eucommia tree, the molecular structure of the eucommia rubber is trans-polyisoprene, the structure of the eucommia rubber is similar to that of natural rubber, the eucommia rubber has great development potential, the problem of lack of rubber resources in China can be solved, and high-quality natural resources of the rubber dependency degree to the outside can be reduced, so the eucommia rubber is a strategic reserve resource, the natural rubber in China depends on import in a large amount every year, and the full utilization of the eucommia rubber is very necessary.

The research on the eucommia ulmoides rubber is late in China, and the research on the eucommia ulmoides rubber sponge is blank.

disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a rubber material of eucommia rubber sponge and a preparation method thereof, which have important significance for enriching the utilization of eucommia rubber.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: the rubber material of the eucommia ulmoides rubber sponge comprises the following components in parts by mass:

The further technical scheme of the invention is as follows: the anti-aging agent is a rubber general anti-aging agent.

further, the oil is a nonpolar oil commonly used in the art, such as naphthenic oil, aromatic oil, or paraffinic oil.

Further, the filler is general inorganic filler or carbon black.

Further, the foaming agent is an azo foaming agent, a benzenesulfonyl hydrazide foaming agent or a carbamido foaming agent.

Further, the accelerator is sulfonamide accelerator or is used in combination with guanidine, thiazole or thiuram.

the preparation method of the rubber material of the eucommia ulmoides rubber sponge adopts the components and the component mixture ratio of the rubber material of the eucommia ulmoides rubber sponge, and comprises the following steps:

1) Drying the glue: placing the eucommia rubber in an environment with the temperature T being more than or equal to 60 ℃ and less than or equal to 80 ℃ to be baked for more than 1 h;

2) preparing materials: accurately metering each component of the sizing material according to a formula and uniformly mixing the components;

3) Plasticating: plasticating by using an open mill or an internal mixer;

4) Mixing: after plasticating, mixing by using an open mill or an internal mixer for multi-section mixing;

5) parking: standing for 24-168 hours in an environment with the temperature of less than 37 ℃ after mixing;

6) and (3) vulcanization foaming: and after the parking is finished, adopting mould pressing vulcanization foaming or non-mould pressing vulcanization foaming.

Further, when the open mill is adopted for plastication in the step 3), the roll temperature is less than 70 ℃, the roll gap is less than 0.3mm, and plastication is carried out for 7-30 times; when an internal mixer is adopted for plasticating, the rubber discharge temperature is less than 150 ℃, and the plasticating time is 5-13 min.

further, the number of the mixing stages in the step 4) at least comprises first-stage mixing and second-stage mixing, wherein the first-stage mixing and the second-stage mixing are both mixed by an open mill mixing or an internal mixer, the first-stage mixing is performed after the rubber material is thin and put on a sheet and then is parked for 1-7 days, and the second-stage mixing is performed after the rubber material is packed into a triangular bag and is discharged and parked for 1-7 days; in general, two-stage kneading is used, and if the two-stage kneading is still not effective, three-stage kneading is possible.

Further, when the first-stage mixing in the step 4) is carried out by using an open mill, the feeding sequence is rubber → zinc oxide, stearic acid → antioxidant → part of the filler → oil → the rest of the filler → oil → accelerator, sulfur and foaming agent, and the mixing process is carried out according to the conventional rubber mixing process; when the first-stage mixing adopts an internal mixer, the time is 5-13min, the rubber discharge temperature is less than 140 ℃, the feeding sequence is the same as that of an open mill, but the accelerator, the sulfur and the foaming agent are added into the open mill, and the roller temperature is less than 90 ℃.

compared with the prior art, the invention has the advantages that:

The invention provides the eucommia rubber sponge rubber material and the preparation method thereof for the first time, wherein the eucommia rubber has the characteristic of room-temperature crystallization and can endow the sponge with better stiffness and shape memory characteristics; the eucommia rubber has excellent seawater corrosion resistance, and the eucommia rubber sponge can be used in seawater for a long time. Meanwhile, the eucommia ulmoides rubber is an important strategic material, and the invention fills the blank of researching strategic reserve resources of the eucommia ulmoides rubber.

Detailed Description

In order to facilitate an understanding of the present invention, the present invention will be described more fully and in detail with reference to the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.