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CN-122011521-A - Anti-skid wear-resistant tire fabric for forklift and preparation method thereof

CN122011521ACN 122011521 ACN122011521 ACN 122011521ACN-122011521-A

Abstract

The invention discloses an anti-skid wear-resistant tire fabric for a forklift and a preparation method thereof, wherein the anti-skid wear-resistant tire fabric comprises, by weight, 50-70 parts of natural rubber, 30-40 parts of solution polymerized styrene-butadiene rubber, 20-30 parts of butadiene rubber, 40-60 parts of modified filler, 2-3 parts of vulcanizing agent, 1-1.5 parts of accelerator, 2-3 parts of anti-aging agent and 5-9 parts of processing aid. The tread material is used for ternary blending of the natural rubber with a tough framework, the solution polymerized styrene-butadiene rubber responsible for wet land grabbing and the butadiene rubber with improved wear resistance, and meanwhile, the modified filler prepared by a specific method is added to prepare the forklift tire tread material with high wear resistance, excellent wet land skid resistance and dynamic mechanical property, so that the technical contradiction that the wear resistance and the skid resistance of the traditional forklift tire are difficult to be considered is solved, the comprehensive performance of the final vulcanized rubber is obviously improved, the service life of the tire is effectively prolonged, and the operation safety of the forklift under complex working conditions is greatly improved.

Inventors

  • LIU BING
  • JIA YUXING
  • JIA ZHENGLIANG
  • CHEN GANG
  • SHEN GENHUA
  • WANG JIULIN

Assignees

  • 江苏赛美特机械有限公司

Dates

Publication Date
20260512
Application Date
20251013

Claims (10)

  1. 1. The anti-skid wear-resistant tire tread for the forklift truck is characterized by comprising the following raw materials in parts by weight: 50-70 parts of natural rubber, 30-40 parts of solution polymerized styrene-butadiene rubber, 20-30 parts of butadiene rubber, 40-60 parts of modified filler, 2-3 parts of vulcanizing agent, 1-1.5 parts of accelerator, 2-3 parts of anti-aging agent and 5-9 parts of processing aid.
  2. 2. The anti-skid and wear-resistant tire fabric for the forklift truck as claimed in claim 1, wherein the anti-skid and wear-resistant tire fabric comprises, by weight, 50-60 parts of natural rubber, 35-40 parts of solution polymerized styrene-butadiene rubber, 20-25 parts of butadiene rubber, 50-60 parts of modified filler, 2-2.5 parts of vulcanizing agent, 1.2-1.5 parts of accelerator, 2.5-3 parts of anti-aging agent and 6-8 parts of processing aid.
  3. 3. The anti-skid and wear-resistant tire fabric for the forklift truck, which is characterized in that the vulcanizing agent is sulfur, the accelerator is one or more of accelerator D, accelerator CZ, accelerator TMTM and accelerator TMTD, the anti-aging agent is one or more of anti-aging agent 4020, anti-aging agent RD and anti-aging agent NA, and the processing aid consists of zinc oxide, naphthenic oil and stearic acid in a mass ratio of 2-4:2-3:1-2.
  4. 4. The skid-proof and wear-resistant tire tread material for a forklift truck as claimed in claim 1, wherein the preparation method of the modified filler comprises the following steps: S1, adding white carbon black into deionized water, carrying out high-speed shearing and homogenizing to obtain a suspension, then adding a nano cellulose dispersion liquid, carrying out ultrasonic treatment, and centrifuging, washing and drying after the treatment is finished to obtain a composite filler; S2, adding the composite filler in the step S1 into ethanol, then adding gamma-glycidol ether oxypropyl trimethoxy silane, performing heating reaction, and filtering, washing and drying after the reaction is finished to obtain an epoxidized composite filler; S3, adding the 2,2' -dithiodibenzoic acid into DMF, stirring, then adding the epoxidized composite filler and triethylamine in the step S2, carrying out constant-temperature reaction, and filtering, washing and drying after the reaction is finished to obtain the organic composite filler; And S4, adding the organic composite filler in the step S3 into DMF, then adding EDC and NHS, stirring and activating, then adding tetraethylenepentamine, stirring and reacting, and filtering, washing and drying after the reaction is finished to obtain the modified filler.
  5. 5. The anti-skid and wear-resistant tire fabric for the forklift truck as claimed in claim 1, wherein in the step S1, the mass of the dispersion liquid of white carbon black, deionized water and nano cellulose is 30-40:700-1000:100-120, the mass concentration of cellulose in the dispersion liquid of cellulose is 3-5%, the high-speed homogenization speed is 8000-10000r/min, the time is 20-30min, the power of the ultrasonic treatment is 400-500W, and the time is 30-40 mm.
  6. 6. The anti-skid and wear-resistant tire fabric for the forklift truck, which is characterized in that in the step S2, the mass ratio of the composite filler to the gamma-glycidoxypropyl trimethoxysilane is 50-60:5-8, the temperature of the heating reaction is 65-75 ℃, and the time is 3-5h.
  7. 7. The anti-skid and wear-resistant tire fabric for the forklift truck, which is characterized in that in the step S3, the mass ratio of the epoxy composite filler to the 2,2' -dithiodibenzoic acid to the triethylamine is 50-60:7-11:2-3, the temperature of the constant temperature reaction is 60-80 ℃ and the time is 5-7h.
  8. 8. The anti-skid and wear-resistant tire fabric for a forklift truck according to claim 1, wherein in the step S4, the mass ratio of the organic composite filler to EDC to NHS to tetraethylenepentamine is 60-70:4-5.5:6-8:7.5-10, the stirring and activating temperature is 0-5 ℃, the time is 1-2h, the stirring reaction temperature is 30-40 ℃ and the time is 5-8h.
  9. 9. A method for preparing the anti-skid and wear-resistant tyre fabric for forklifts according to any one of claims 1 to 8, comprising the following steps: Weighing raw materials according to a formula, adding natural rubber, butadiene rubber and solution polymerized styrene-butadiene rubber into an internal mixer for primary internal mixing, then adding 50% of modified filler, an anti-aging agent and a processing aid for secondary internal mixing, then adding 50% of modified filler for tertiary internal mixing, discharging rubber once after internal mixing is finished, tabletting by an open mill, standing for curing to obtain a rubber sheet, adding the rubber sheet into the internal mixer for mixing, then adding a vulcanizing agent and an accelerator for secondary mixing, discharging rubber twice after mixing is finished to obtain a rubber compound, transferring the mixed product into a vulcanizing mold for three-stage pressure control, and vulcanizing to obtain the rubber sheet.
  10. 10. The method according to claim 9, wherein the primary internal mixing is performed at 80-95 ℃ for 2-3min, the secondary internal mixing is performed at 110-130 ℃ for 2-3min, the tertiary internal mixing is performed at 135-145 ℃ for 3-4min, the primary rubber discharging is performed at 145-155 ℃ and the standing and curing are performed for 8-12h, the mixing is performed at 70-85 ℃ for 2-3min, the secondary mixing is performed at 85-95 ℃ for 1-2min, the secondary rubber discharging is performed at 90-100 ℃, the vulcanizing is performed at 160-175 ℃, and the three-stage pressure is sequentially performed at 0.5-1MPa, 2.0-2.5MPa, 1.8-2.2MPa and the vulcanizing time is 20-30min.

Description

Anti-skid wear-resistant tire fabric for forklift and preparation method thereof Technical Field The invention belongs to the technical field of tire preparation, and particularly relates to an anti-skid wear-resistant tire tread material for a forklift and a preparation method thereof. Background The forklift is used as an indispensable carrying device in industrial production and storage logistics, the operation environment is complex and changeable, and the requirement on the performance of tires is extremely severe. The forklift tires not only need to bear the heavy load far exceeding that of the common vehicles, but also need to adapt to high-frequency starting, braking, sharp turning and long-time continuous operation. According to different use occasions, forklift tires are mainly divided into two main types, namely pneumatic tires and solid tires. The solid tyre has the advantages of high bearing capacity, puncture resistance, no maintenance and the like, and is widely applied to indoor and flat road conditions. The tread is used as a part of the tire which is directly contacted with the ground, and the performance of the tread directly determines the traction capability, braking efficiency and operation safety of the forklift, so that the development of tread rubber with excellent comprehensive performance is the core of the technical development of the forklift tire. At present, the improvement of the comprehensive performance of the tire mainly surrounds the key indexes of wear resistance and wet skid resistance. In order to improve the wear resistance, a general technical means is to use a filler with high reinforcing property, such as high wear resistance carbon black or ordinary white carbon black, and increase the filling amount thereof. Although the tensile stress, tensile strength and wear resistance and energy consumption of the rubber material can be effectively improved, the hardness and elasticity of the rubber material are obviously increased, so that the hysteresis loss of the tire is reduced, and the friction between the tire and a wet road surface is reduced, namely the wet skid resistance is deteriorated. On the contrary, in order to improve the wet skid resistance, methods of increasing the dosage of natural rubber, using high vinyl polybutadiene rubber or introducing wet skid auxiliary agents are sometimes adopted in the industry, but the measures often sacrifice the strength and hardness of the rubber, so that the wear resistance and tear resistance of the tire are reduced, and the service life is shortened. Therefore, the common dilemma faced by the prior art is that the prior art is difficult to break through performance bottleneck simply by adjusting rubber types or the proportion of traditional fillers, and the remarkable improvement of wear resistance and wet skid resistance can not be realized synchronously, so that potential safety hazards such as skid, prolonged braking distance and the like still exist when the conventional forklift tire faces greasy dirt and ponding wet slippery ground, and the tire is worn fast and replaced frequently, thereby increasing the operation cost of enterprises. Chinese patent application CN102634089a discloses a tire tread compound, which significantly improves the wet skid resistance and wear resistance of the compound by introducing highly dispersible white carbon black and matching with a silane coupling agent. The technology utilizes the high specific surface area of the white carbon black and the interface modification effect of the silane coupling agent to enhance the binding force between the filler and the rubber matrix. However, the formulation of this patent has limited improvement in tear resistance, and test data shows that the tear strength is still difficult to meet the requirements of high load solid tires. In addition, the addition of the high-dispersity white carbon black improves part of performances, but also increases processing difficulty and production cost, and limits popularization of the high-dispersity white carbon black in industrial production. The Chinese patent application CN114163703A discloses a durable solid tire and a preparation method thereof, wherein the durable solid tire comprises a tire liner and tread rubber, the tire liner comprises chloroprene rubber, reclaimed rubber, natural rubber, an anti-aging agent, sulfur and an accelerator, the tread rubber comprises raw materials of butadiene rubber, chloroprene rubber, reclaimed rubber, carbon black, amido grafting modified polyethylene terephthalate, zinc oxide, sulfur and stearic acid, the preparation method comprises the steps of S1, preparation of the tire liner, S2, preparation of the tread rubber, and S3, preparation of the solid tire. According to the invention, the amide group grafted modified polyethylene glycol terephthalate is adopted, so that the heat conduction performance of the tread rubber is improved, and the chain segment movement is hin