Application of polyurethane composite anti-heartburn agent in food processing machinery

Date：2025-03-16 Categories：News

Polyurethane composite anti-heartburn agent: the “guardian” in food processing machinery

In the modern food industry, the efficient operation of mechanical equipment is the key to ensuring production efficiency and product quality. However, high temperature and high load working environments often cause severe wear and corrosion to the equipment, which affects its service life and performance. To address this challenge, scientists have developed a magical material – polyurethane composite anti-heartburn agent. This material not only effectively protects mechanical equipment from high temperature corrosion, but also significantly improves its operating efficiency and stability. This article will explore in-depth the application of polyurethane composite anti-heartburn agents in food processing machinery, revealing their unique properties and wide applications.

1. Basic concepts of polyurethane composite anti-heartburn agent

Polyurethane composite anti-heartburn agent is a high-performance material composed of a polyurethane substrate and a variety of functional additives. It combines the flexibility of polyurethane and the special properties of functional additives at the molecular level to form a material with excellent high temperature resistance, corrosion resistance and wear resistance. This material can provide comprehensive protection for mechanical equipment under extreme conditions and is known as the “guardian of food processing machinery”.

1.1 Definition of polyurethane composite anti-heartburn agent

Polyurethane Composite Anti-Heat Agent is a multifunctional coating or filling material based on polyurethane resin. It enhances the thermal stability and mechanical properties of traditional polyurethane materials by introducing ceramic particles, metal oxides and other functional fillers. This material is usually present in liquid or solid form and can be sprayed, coated or molded according to specific needs.

1.2 Core Functional Features

The core function of polyurethane composite anti-heartburn agent is its excellent anti-high temperature performance. In food processing machinery, many components need to work for a long time in high temperature environments, such as the inner wall of the oven, the seal ring of the cooking equipment, and the blade of the mixer. If these components lack effective protection measures, they can easily cause the material to age, deform or even fail due to high temperatures. The polyurethane composite anti-centrifuge agent can effectively isolate the impact of high temperature on the equipment by forming a dense protective film, while reducing heat transfer and energy consumption.

In addition, the material also has excellent wear resistance and corrosion resistance. During food processing, mechanical equipment is often exposed to acid and alkali solutions, greases or other chemicals, which may accelerate the corrosion and damage of the equipment. Polyurethane composite anti-centrifuge agent can significantly extend the service life of the equipment and reduce maintenance costs by enhancing surface hardness and chemical stability.

2. Structure and composition of polyurethane composite anti-heartburn agent

The reason why polyurethane composite anti-heartburn agents have such powerful properties is closely related to their unique structure and composition. The following will be based on material composition, molecular structure and preparation process.A detailed introduction to it.

2.1 Material composition analysis

The main components of polyurethane composite anti-heartburn agent include the following parts:

Ingredient Category	Specific ingredients	Function Description
Basic Resin	Polyurethane prepolymer	Provides flexibility, adhesion and basic mechanical properties
Functional filler	Alumina, zirconium oxide, silicon carbide	Enhanced high temperature, wear and corrosion resistance
Addant	Silane coupling agents, antioxidants	Improve interface bonding and delay aging process
Solvent	Organic solvent or water	Adjust the viscosity for easy construction

Among them, the basic resin is the core skeleton of the entire material, which determines its basic physical properties; functional fillers are the key to improving specific properties. For example, alumina can improve the heat resistance of the material, while silicon carbide can significantly enhance the wear resistance; additives play an auxiliary role to ensure that the material remains stable during long-term use.

2.2 Molecular Structure Characteristics

From the molecular perspective, the structure of polyurethane composite anti-heartburn agent is mainly composed of two parts: hard segment and soft segment. The hard segment is a rigid segment formed by the reaction of isocyanate and polyol, which is responsible for providing the strength and heat resistance of the material; the soft segment is a flexible segment composed of low molecular weight polyether or polyester, which gives the material good elasticity and fatigue resistance. By adjusting the ratio of hard and soft segments, fine control of material properties can be achieved.

In addition, the addition of functional fillers will form a microcomposite structure inside the material. For example, zirconia particles can further enhance interface binding force by forming chemical bonds with polyurethane substrates, thereby improving overall performance.

2.3 Preparation process flow

The preparation of polyurethane composite anti-heartburn agent usually includes the following steps:

Raw Material Preparation: Accurately weigh each component according to the formula requirements and ensure that its purity meets the standards.
Mixed and dispersed: Fully mix the base resin with functional filler, and use high-speed stirring or ultrasonic dispersion technology to ensure uniform distribution of the filler.
Mature treatment: TheThe slurry is left for a period of time to allow appropriate chemical reactions to occur inside it and improve final performance.
Currecting and forming: According to actual application requirements, choose spraying, brushing or molding to apply the material to the target surface, and the curing is completed by heating or natural drying.

Through the above process flow, a polyurethane composite anti-heartburn product with excellent performance can be obtained.

III. Product parameters of polyurethane composite anti-heartburn agent

To better understand the specific properties of polyurethane composite anti-heartburn agents, the following lists its key product parameters:

parameter name	Unit	Typical	Remarks
Density	g/cm³	1.2-1.8	Depending on filler content
Hardness	Shore D	70-90	Can be adjusted according to requirements
High usage temperature	°C	300-400	Long-time working temperature
Thermal conductivity	W/(m·K)	0.2-0.5	Low heat conduction capability
Abrasion resistance	mm³	<10	ASTM G65 standard test results
Corrosion resistance	pH range	2-12	Can resist most acid and alkaline environments

These parameters show that polyurethane composite anti-heartburn agents perform excellently in high temperature, wear resistance and corrosion resistance, and are very suitable for use in the field of food processing machinery.

IV. Application cases of polyurethane composite anti-heartburn agent

Polyurethane composite anti-heartburn agent is widely used in food processing machinery. Here are a few typical examples:

4.1 Oven inner wall protection

In the baking industry, the inner wall of the oven is often exposed to high temperature environments, and oxidation and peeling are prone to occur. By spraying a layer of polyurethane composite anti-heartburn agent, it can not only effectively prevent the inner wall material from getting oldIt can also reduce heat loss and improve energy utilization efficiency. Experimental data show that the life of the treated oven inner wall can be extended by more than three times.

4.2 Steaming and cooking equipment sealing ring

The sealing ring in the cooking equipment needs to withstand high temperature and high pressure working conditions, and ordinary rubber materials are difficult to meet the requirements. The sealing ring made of polyurethane composite anti-centrifuge agent not only has excellent heat resistance, but also resists corrosion of steam and food residues, significantly improving the reliability of the equipment.

4.3 Blender blade protection

When the dough stirring process, the leaves will be exposed to grease and flour particles for a long time, which is prone to wear and adhesion. By applying a layer of polyurethane composite anti-centrifuge agent on the surface of the blade, the friction coefficient can be greatly reduced, the adhesion problem can be reduced, and the service life of the blade can be extended.

5. Progress in domestic and foreign research

In recent years, many important results have been achieved in the study of polyurethane composite anti-heartburn agents. The following briefly introduces the main contents of relevant domestic and foreign literature:

5.1 Domestic research trends

Domestic scholars mainly pay attention to the formulation optimization and practical application effects of polyurethane composite anti-heartburn agents. For example, a research team successfully improved the material’s high temperature resistance by introducing nanoscale zirconia particles, allowing it to work stably in an environment above 400°C. Another study showed that the overall energy consumption of the equipment was reduced by about 15% after using the material in food processing machinery.

5.2 Foreign research trends

Foreign research pays more attention to the environmental protection and sustainable development of materials. Some European and American countries have developed solvent-free polyurethane composite anti-heartburn agents to avoid environmental pollution caused by traditional solvents. In addition, researchers have tried to introduce bio-based raw materials into the polyurethane system to reduce their dependence on petroleum resources.

VI. Future development direction

With the continuous development of the food industry, the demand for polyurethane composite anti-heartburn agents will continue to grow. In the future, the development direction of this material may focus on the following aspects:

Performance Improvement: By introducing new functional fillers and modification technologies, the materials’ high temperature resistance, wear resistance and corrosion resistance are further improved.
Green and Environmental Protection: Develop more environmentally friendly production processes and raw materials to reduce the impact on the environment.
Intelligent Application: Combining the Internet of Things and sensor technology, real-time monitoring and early warning of material status can be achieved and equipment management efficiency can be improved.

In short, polyurethane composite anti-heartburn agent, as a high-performance material, is bringing revolutionary changes to the food processing machinery industry. We have reason to believe that with the unremitting efforts of scientists, this materialIt is expected to play a greater role in the future.

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