Fabric core conveyor belt adhesive with high bio-based content and preparation method of fabric core conveyor belt adhesive

Abstract

The invention provides a fabric core conveyor belt adhesive with high bio-based content and a preparation method thereof, and relates to the technical field of rubber conveyor belts for industrial conveying, the fabric core conveyor belt adhesive comprises the following components by weight: 100 parts of raw rubber, 45-60 parts of a reinforcing agent, 20-30 parts of a plasticizer, 4-7 parts of an activator, 5-8 parts of an adhesive, 2-4 parts of an anti-aging agent, and 2-3 parts of a vulcanizing agent. The raw rubber comprises 10 to 30 parts of natural rubber and 70 to 90 parts of itaconate rubber. According to the fabric core conveyor belt adhesive with high bio-based content and the preparation method of the fabric core conveyor belt adhesive, multiple bio-based raw materials are adopted, overall good interaction is achieved, the obtained fabric core conveyor belt adhesive is high in bio-based material content and excellent in physical and mechanical performance, a large number of bio-based raw materials are used in the formula, and emission of VOC is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rubber conveyor belts for industrial transportation, in particular to a rubber coating for a fabric core conveyor belt with a high bio-based content and a preparation method thereof. Background Art

[0002] In the field of conveyor belt production, for a long time, most raw materials have been extremely dependent on materials synthesized from fossil resources. This production method has led to high carbon emissions, seriously restricting the sustainable development of the conveyor belt industry. In order to meet this challenge, global rubber companies are actively engaged in the research and development of green and low-carbon materials, and are committed to gradually reducing their dependence on fossil raw materials.

[0003] As an outstanding representative of renewable resources, the new generation of bio-based materials are gradually becoming an important component of rubber formulas. By cleverly integrating these bio-based materials into rubber formulas, not only the high added value of biomass resources is achieved, but also the consumption and dependence on petrochemical resources are significantly reduced, thereby significantly reducing carbon emissions. This innovative measure provides strong support for the low-carbon and green development of the conveyor belt industry. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a fabric core conveyor belt rubber with a high bio-based content and a preparation method thereof, which adopts a variety of bio-based raw materials to achieve overall good interaction. The obtained fabric core conveyor belt rubber has a high bio-based material content and excellent physical and mechanical properties.

[0005] The technical solution adopted by the present invention is:

[0006] A fabric core conveyor belt rubber with a high bio-based content, which includes the following components by weight: 100 parts of raw rubber, 45-60 parts of a reinforcing agent, 20-30 parts of a plasticizer, 4-7 parts of an activator, 5-8 parts of an adhesive, 2-4 parts of an antioxidant, 2-3 parts of a vulcanizer, and 3-4.5 parts of an accelerator.

[0007] Preferably, the rubber coating of the fabric core conveyor belt with high bio-based content comprises 10-30 parts of natural rubber and 70-90 parts of itaconate rubber.

[0008] Preferably, in the above-mentioned high bio-based content fabric core conveyor belt rubber, the reinforcing agent is selected from one or two of rice husk-based white carbon black and lignin reinforcing agent; and the plasticizer is selected from one or more of palm oil, rapeseed oil and epoxidized soybean oil.

[0009] Preferably, in the fabric core conveyor belt rubber with high bio-based content, the activator comprises 3-5 parts of nano zinc oxide and 1-2 parts of stearic acid.

[0010] Preferably, in the high bio-based content fabric core conveyor belt adhesive, the adhesive comprises 3-5 parts of bio-based adhesive and 2-3 parts of RA adhesive.

[0011] Preferably, in the high bio-based content fabric core conveyor belt rubber, the antioxidant is selected from one or more of antioxidant RD, antioxidant 4020 and antioxidant BLE.

[0012] Preferably, in the fabric core conveyor belt rubber with high bio-based content, the vulcanizing agent is sulfur; and the accelerator is selected from one or more of accelerator CZ, accelerator NS, accelerator M, accelerator DM, accelerator DTDM and accelerator TMTD.

[0013] The present invention also provides a method for preparing a rubber coating for a fabric core conveyor belt with a high bio-based content, wherein: by weight, the method comprises the following steps:

[0014] Step S1. 100 parts of raw rubber, 45-60 parts of reinforcing agent, 20-30 parts of plasticizer, 4-7 parts of activator, 2-4 parts of antioxidant, and 5-8 parts of adhesive are mixed once, cooled and parked, and then 2-3 parts of vulcanizing agent and 3-4.5 parts of accelerator are added for secondary mixing, and finally the mixture is re-mixed in an open mill to obtain a mixed rubber;

[0015] Step S2: The mixed rubber obtained in step S1 is left to stand for 16 hours to 24 hours, and then vulcanized to obtain a fabric core conveyor belt adhesive with a high bio-based content.

[0016] Preferably, the method for preparing the rubber coating of the fabric core conveyor belt with high bio-based content, wherein: the temperature of the first mixing in step S1 is 110°C to 135°C, and the time is 5min-7min; the cooling parking time is greater than 8h; the temperature of the second mixing is 90°C to 105°C, and the time is 2min-3min; the time of the open mixing mill is 4min-6min.

[0017] Preferably, in the method for preparing the rubber coating for a fabric core conveyor belt with a high bio-based content, the vulcanization temperature in step S2 is 150° C., the vulcanization pressure is 3 MPa, and the vulcanization time is 40 min.

[0018] Advantages of the present invention:

[0019] The high-biobased content fabric core conveyor belt adhesive and preparation method thereof of the present invention adopt a variety of bio-based raw materials to achieve overall good interaction. The obtained fabric core conveyor belt adhesive has a high bio-based material content and excellent physical and mechanical properties. A large amount of bio-based raw materials are used in the formula to effectively reduce VOC emissions. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with specific embodiments.

[0021] Example 1

[0022] A fabric core conveyor belt rubber with a high bio-based content, comprising the following components in parts by weight:

[0023] 70 parts of itaconate rubber, 30 parts of natural rubber, 30 parts of rice husk silica, 15 parts of lignin reinforcement agent, 10 parts of epoxidized soybean oil, 10 parts of rapeseed oil, 3 parts of nano zinc oxide, 1 part of stearic acid, 3 parts of bio-based adhesive, 2 parts of adhesive RA, 1.5 parts of antioxidant BLE, 1 part of antioxidant 4020, 2.3 parts of sulfur, 1.5 parts of accelerator M, 1.5 parts of accelerator DM, and 1.5 parts of accelerator CZ; the manufacturer of bio-based adhesive is Shandong Yanggu Huatai Chemical Co., Ltd., the brand is ML-R; the manufacturer of itaconate rubber is Shandong Jingbo Holding Group.

[0024] The method for preparing the rubber coating of the fabric core conveyor belt with high bio-based content in this embodiment comprises the following steps, calculated by weight:

[0025] Step S1. 70 parts of itaconate rubber, 30 parts of natural rubber, 30 parts of rice husk white carbon black, 15 parts of lignin reinforcing agent, 10 parts of epoxidized soybean oil, 10 parts of rapeseed oil, 3 parts of nano zinc oxide, 1 part of stearic acid, 3 parts of bio-based adhesive, 2 parts of adhesive RA, 1.5 parts of antioxidant BLE, 1 part of antioxidant 4020, are mixed once, the temperature of the first mixing is 120°C, the time is 5 minutes, and the cooling is stopped for 8 hours, and then 2.3 parts of sulfur, 1.5 parts of accelerator M, 1.5 parts of accelerator DM, and 1.5 parts of accelerator CZ are added for secondary mixing, the temperature of the secondary mixing is 95°C, the time is 2 minutes, and finally the mixing is turned over in an open mill for 4 minutes to obtain a mixed rubber;

[0026] Step S2. After the rubber mix obtained in step S1 is left to stand for 16 hours, it is vulcanized at a vulcanization temperature of 150° C., a vulcanization pressure of 3 MPa, and a vulcanization time of 40 minutes to obtain a fabric core conveyor belt adhesive with a high bio-based content.

[0027] Example 2

[0028] A fabric core conveyor belt rubber with a high bio-based content, comprising the following components in parts by weight:

[0029] 80 parts of itaconate rubber, 20 parts of natural rubber, 20 parts of rice husk silica, 40 parts of lignin reinforcing agent, 5 parts of palm oil, 5 parts of epoxidized soybean oil, 10 parts of rapeseed oil, 3.5 parts of nano zinc oxide, 2 parts of stearic acid, 4 parts of bio-based adhesive, 3 parts of adhesive RA, 1 part of antioxidant BLE, 1 part of antioxidant RD, 2 parts of sulfur, 1.2 parts of accelerator M, 1 part of accelerator DM, and 0.8 parts of accelerator CZ; the manufacturer of bio-based adhesive is Shandong Yanggu Huatai Chemical Co., Ltd., and the brand is ML-R; the manufacturer of itaconate rubber is Shandong Chamboo Holding Group.

[0030] The method for preparing the rubber coating of the fabric core conveyor belt with high bio-based content in this embodiment comprises the following steps, calculated by weight:

[0031] Step S1. 80 parts of itaconate rubber, 20 parts of natural rubber, 20 parts of rice husk white carbon black, 40 parts of lignin reinforcing agent, 5 parts of palm oil, 5 parts of epoxidized soybean oil, 10 parts of rapeseed oil, 3.5 parts of nano zinc oxide, 2 parts of stearic acid, 4 parts of adhesive MLR, 3 parts of adhesive RA, 1 part of antioxidant BLE, and 1 part of antioxidant RD are mixed once, the temperature of the first mixing is 125°C, the time is 6 minutes, and the cooling is stopped for 8 hours, and then 2 parts of sulfur, 1.2 parts of accelerator M, 1 part of accelerator DM, and 0.8 parts of accelerator CZ are added for secondary mixing, the temperature of the secondary mixing is 100°C, the time is 2.5 minutes, and finally the mixing is turned over on an open mill for 6 minutes to obtain a mixed rubber;

[0032] Step S2. After the rubber mix obtained in step S1 is left to stand for 16 hours, it is vulcanized at a vulcanization temperature of 150° C., a vulcanization pressure of 3 MPa, and a vulcanization time of 40 minutes to obtain a fabric core conveyor belt adhesive with a high bio-based content.

[0033] Example 3

[0034] A fabric core conveyor belt rubber with a high bio-based content, comprising the following components in parts by weight:

[0035] 80 parts of itaconate rubber, 20 parts of natural rubber, 20 parts of rice husk silica, 35 parts of lignin reinforcing agent, 10 parts of palm oil, 10 parts of epoxidized soybean oil, 10 parts of rapeseed oil, 5 parts of nano zinc oxide, 2 parts of stearic acid, 5 parts of bio-based adhesive, 3 parts of adhesive RA, 2 parts of antioxidant BLE, 2 parts of antioxidant RD, 3 parts of sulfur, 1.5 parts of accelerator M, 1.5 parts of accelerator DM, 1.5 parts of accelerator CZ; the manufacturer of bio-based adhesive is Shandong Yanggu Huatai Chemical Co., Ltd., the brand is ML-R; the manufacturer of itaconate rubber is Shandong Chamboo Holding Group.

[0036] The method for preparing the rubber coating of the fabric core conveyor belt with high bio-based content in this embodiment comprises the following steps, calculated by weight:

[0037] Step S1. 80 parts of itaconate rubber, 20 parts of natural rubber, 20 parts of rice husk white carbon black, 35 parts of lignin reinforcing agent, 10 parts of palm oil, 10 parts of epoxidized soybean oil, 10 parts of rapeseed oil, 5 parts of nano zinc oxide, 2 parts of stearic acid, 5 parts of bio-based adhesive, 3 parts of adhesive RA, 2 parts of antioxidant BLE, and 2 parts of antioxidant RD are mixed once, the temperature of the first mixing is 125°C, the time is 7 minutes, and the cooling is stopped for 8 hours, and then 3 parts of sulfur, 1.5 parts of accelerator M, 1.5 parts of accelerator DM, and 1.5 parts of accelerator CZ are added for secondary mixing, the temperature of the secondary mixing is 105°C, the time is 3 minutes, and finally the mixing is turned over in an open mill for 5 minutes to obtain a mixed rubber;

[0038] Step S2. After the rubber mix obtained in step S1 is left to stand for 16 hours, it is vulcanized at a vulcanization temperature of 150° C., a vulcanization pressure of 3 MPa, and a vulcanization time of 40 minutes to obtain a fabric core conveyor belt adhesive with a high bio-based content.

[0039] Example 4

[0040] A fabric core conveyor belt rubber with a high bio-based content, comprising the following components in parts by weight:

[0041] 90 parts of itaconate rubber, 10 parts of natural rubber, 30 parts of rice husk silica, 30 parts of lignin reinforcing agent, 15 parts of palm oil, 10 parts of rapeseed oil, 4 parts of nano zinc oxide, 2 parts of stearic acid, 4 parts of bio-based adhesive, 3 parts of adhesive RA, 2 parts of antioxidant BLE, 2 parts of antioxidant RD, 2.6 parts of sulfur, 1.8 parts of accelerator M, 1.1 parts of accelerator DM, and 1 part of accelerator CZ; the manufacturer of bio-based adhesive is Shandong Yanggu Huatai Chemical Co., Ltd., the brand is ML-R; the manufacturer of itaconate rubber is Shandong Chamboo Holding Group.

[0042] The method for preparing the rubber coating of the fabric core conveyor belt with high bio-based content in this embodiment comprises the following steps, calculated by weight:

[0043] Step S1. 90 parts of itaconate rubber, 10 parts of natural rubber, 30 parts of rice husk white carbon black, 30 parts of lignin reinforcing agent, 5 parts of palm oil, 10 parts of rapeseed oil, 4 parts of nano zinc oxide, 2 parts of stearic acid, 4 parts of bio-based adhesive, 3 parts of adhesive RA, 2 parts of antioxidant BLE, and 2 parts of antioxidant RD are mixed once, the temperature of the first mixing is 135° C., the time is 5 minutes, and the cooling is stopped for 8 hours, and then 1.6 parts of sulfur, 1.8 parts of accelerator M, 1.1 parts of accelerator DM, and 1 part of accelerator CZ are added for secondary mixing, the temperature of the secondary mixing is 105° C., the time is 3 minutes, and finally the mixing is turned over in an open mill for 5 minutes to obtain a mixed rubber;

[0044] Step S2. After the rubber mix obtained in step S1 is left to stand for 16 hours, it is vulcanized at a vulcanization temperature of 150° C., a vulcanization pressure of 3 MPa, and a vulcanization time of 40 minutes to obtain a fabric core conveyor belt adhesive with a high bio-based content.

[0045] Comparative Example 1

[0046] A fabric core conveyor belt adhesive, comprising the following components in parts by weight:

[0047] 90 parts of styrene butadiene rubber, 10 parts of natural rubber, 10 parts of white carbon black, 40 parts of N330, 15 parts of aromatic oil, 10 parts of 1# coumarone resin, 3 parts of nano zinc oxide, 2 parts of stearic acid, 4 parts of adhesive RS, 3 parts of adhesive RA, 1.5 parts of antioxidant BLE, 1 part of antioxidant RD, 2 parts of sulfur, 1 part of accelerator DTDM, 0.5 parts of accelerator M, and 1.2 parts of accelerator NS.

[0048] The preparation method of the fabric core conveyor belt adhesive of this comparative example comprises the following steps, measured by weight:

[0049] Step S1. 90 parts of styrene-butadiene rubber, 10 parts of natural rubber, 10 parts of white carbon black, 40 parts of N330, 15 parts of aromatic oil, 10 parts of 1# coumarone resin, 3 parts of nano zinc oxide, 2 parts of stearic acid, 1.5 parts of antioxidant BLE, and 1 part of antioxidant RD are mixed once, the temperature of the first mixing is 120°C, the time is 5 minutes, and the cooling is stopped for 8 hours, and then 4 parts of adhesive RS, 3 parts of adhesive RA, 2 parts of sulfur, 0.5 parts of accelerator M, 1 part of accelerator DTDM, and 1.2 parts of accelerator NS are added for secondary mixing, the temperature of the secondary mixing is 105°C, the time is 3 minutes, and finally the mixing is turned over in an open mill for 5 minutes to obtain a mixed rubber;

[0050] Step S2. After the rubber mix obtained in step S1 is left to stand for 16 hours, it is vulcanized at a vulcanization temperature of 150° C., a vulcanization pressure of 3 MPa, and a vulcanization time of 40 minutes to obtain a fabric core conveyor belt adhesive with a high bio-based content.

[0051] The fabric core conveyor belt adhesive provided in Examples 1-4 and Comparative Example 1 was subjected to performance tests, and the test results are shown in Table 1.

[0052] Table 1

[0053]

[0054] It can be concluded from the test results in Table 1 that the high bio-based content fabric core conveyor belt adhesive of the present invention performs better than the conventional fabric core conveyor belt adhesive of Comparative Example 1 in terms of physical and mechanical properties such as tensile strength, elongation at break, and cloth-to-cloth adhesion, highlighting the effectiveness and advantages of its formula and preparation method.

[0055] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A fabric core conveyor belt adhesive with high bio-based content, characterized in that: The composition includes the following components by weight: 100 parts of raw rubber, 45-60 parts of reinforcing agent, 20-30 parts of plasticizer, 4-7 parts of activator, 5-8 parts of adhesive, 2-4 parts of antioxidant, 2-3 parts of vulcanizing agent and 3-4.5 parts of accelerator.

2. The high bio-based content fabric core conveyor belt rubber according to claim 1, characterized in that: The raw rubber comprises 10-30 parts of natural rubber and 70-90 parts of itaconate rubber.

3. The high bio-based content fabric core conveyor belt rubber according to claim 1, characterized in that: The reinforcing agent is selected from one or two of rice husk white carbon black and lignin reinforcing agent; the plasticizer is selected from one or more of palm oil, rapeseed oil and epoxidized soybean oil.

4. The high bio-based content fabric core conveyor belt rubber according to claim 1, characterized in that: The activator comprises 3-5 parts of nano zinc oxide and 1-2 parts of stearic acid.

5. The high bio-based content fabric core conveyor belt rubber according to claim 1, characterized in that: The adhesive includes 3-5 parts of a bio-based adhesive and 2-3 parts of a RA adhesive.

6. The high bio-based content fabric core conveyor belt adhesive according to claim 1, characterized in that: The antioxidant is selected from one or more of antioxidant RD, antioxidant 4020 and antioxidant BLE.

7. The high bio-based content fabric core conveyor belt rubber according to claim 1, characterized in that: The vulcanizing agent is sulfur; the accelerator is selected from one or more of accelerator CZ, accelerator NS, accelerator M, accelerator DM, accelerator DTDM and accelerator TMTD.

8. The method for preparing a rubber coating for a fabric core conveyor belt with a high bio-based content according to any one of claims 1 to 7, characterized in that: By weight, the method comprises the following steps: Step S1. 100 parts of raw rubber, 45-60 parts of reinforcing agent, 20-30 parts of plasticizer, 4-7 parts of activator, 2-4 parts of antioxidant, and 5-8 parts of adhesive are mixed once, cooled and parked, and then 2-3 parts of vulcanizing agent and 3-4.5 parts of accelerator are added for secondary mixing, and finally the mixture is re-mixed in an open mill to obtain a mixed rubber; Step S2: The mixed rubber obtained in step S1 is left to stand for 16 hours to 24 hours, and then vulcanized to obtain a fabric core conveyor belt adhesive with a high bio-based content.

9. The method for preparing a rubber coating for a fabric core conveyor belt with a high bio-based content according to claim 8, characterized in that: In step S1, the temperature of the first mixing is 110°C to 135°C, and the time is 5min-7min; the cooling parking time is greater than 8h; the temperature of the second mixing is 90°C to 105°C, and the time is 2min-3min; and the time of the open mill mixing is 4min-6min.

10. The method for preparing a rubber coating for a fabric core conveyor belt with a high bio-based content according to claim 8, characterized in that: In step S2, the vulcanization temperature is 150° C., the vulcanization pressure is 3 MPa, and the vulcanization time is 40 min.

Images