In recent years, as people's pursuit of healthy life continues to improve, choosing safe, environmentally friendly and healthy kitchenware has become a trend. Among many materials, high borosilicate glass food containers have quickly become popular with their excellent performance and simple and beautiful appearance, and have become a common choice for many families, offices and takeout packaging. However, many consumers inevitably have questions in their minds: Are high borosilicate glass food containers resistant to high temperatures? Can they be heated directly? What are the precautions when using them? This article will deeply analyze the high temperature resistance of high borosilicate glass from multiple angles to help everyone correctly understand and use this container scientifically.
What is high borosilicate glass?
High borosilicate glass, also known as heat-resistant glass, is a special silicate glass. It is made by adding elements such as boron, oxygen, and silicon to make its structure more compact and stable, thus possessing high temperature resistance, thermal shock resistance and chemical stability that ordinary soda-lime glass does not have. Common high borosilicate glass applications are not limited to food containers, but are also widely used in laboratory test tubes, beakers, coffee pots, lamps and other products with high heat resistance requirements.
A notable feature of high borosilicate glass is its low thermal expansion coefficient. Ordinary glass is easy to expand and crack when exposed to heat, while high borosilicate glass is not easy to crack when the temperature changes suddenly, which is why it is called "heat-resistant glass".
1. The principle of high temperature resistance of high borosilicate glass food containers
The high borosilicate glass food containers can withstand high temperatures, mainly due to its raw material formula and production process. The heat-resistant temperature of high borosilicate glass can generally reach about 400°C, and the temperature difference can be above 120°C in a short period of time. Therefore, it is fully capable of coping with the high temperatures in kitchen environments such as daily baking, steaming, and microwave heating.
The principle of high temperature resistance is mainly reflected in two aspects:
Low expansion coefficient
The thermal expansion coefficient of high borosilicate glass is only about 1/3 to 1/5 of that of ordinary glass, which means that its volume changes less when it is heated and is not easy to break due to internal stress. This feature allows high borosilicate glass to maintain integrity even in an environment with rapid temperature changes.
High softening point
Ordinary glass starts to soften at about 500℃, while the softening point of high borosilicate glass is usually around 820℃, so whether it is steaming, boiling or baking in the kitchen, there is no need to worry about its deformation or melting due to high temperature.
Use scenarios of high borosilicate glass food containers
In daily life, the high temperature resistance of high borosilicate glass food containers brings us many conveniences. For example:
Microwave heating: Many people worry that glass containers will burst when put into the microwave, but the heat shock resistance of high borosilicate glass makes it completely usable for microwave heating without releasing harmful substances.
Oven baking: Some oven baking trays and baking bowls are made of high borosilicate glass. They can withstand temperatures of up to 200℃-300℃ inside the oven, which is suitable for baking cakes, baked rice and other delicacies.
Steaming in a steamer: Steaming bowls and steaming trays made of high borosilicate glass are still stable in a high temperature steam environment and will not crack or explode.
Hot food serving: Whether it is boiling soup or stir-fried dishes just out of the pot, there will be no problem pouring them directly into high borosilicate glass containers.
2. What should be paid attention to when using high borosilicate glass food containers?
Although high borosilicate glass has excellent high temperature resistance, in order to extend its service life and avoid unnecessary damage, users still need to pay attention to some details when using it.
Avoid violent impact
Glass itself is a brittle material, and high borosilicate glass is no exception. Although it is heat-resistant and cold-resistant, it may still break if it hits a hard object suddenly at high temperature. Therefore, try to avoid bumps when using it.
Do not dry burn
High borosilicate glass is resistant to high temperatures, but it does not mean that it can be directly placed on an open flame for dry burning. Dry burning will cause local overheating, stress concentration, and increase the risk of breakage. If you need to use fire, make sure that the liquid or food is in contact with the bottom and is evenly heated.
Moderately control the temperature difference
Although high borosilicate glass has good temperature resistance, it is recommended not to let the container suddenly enter ice water from high temperature in a short period of time or directly heat it from a frozen state to avoid damaging the internal structure.
Follow the manufacturer's instructions
The performance of high borosilicate glass containers of different brands and batches may vary. It is recommended to read the instructions carefully before use and operate according to the maximum temperature resistance and precautions provided by the manufacturer.
3. Advantages of high borosilicate glass food containers
From the perspective of health, safety and environmental protection, high borosilicate glass food containers have irreplaceable advantages over other materials:
Safe and harmless: Glass itself has stable chemical properties, does not contain harmful substances such as bisphenol A and plasticizers, and will not release toxins when exposed to high temperatures.
Durable and beautiful: The transparent and smooth appearance is not only practical, but also enhances the dining experience.
High temperature and corrosion resistance: It is not afraid of oil stains, acid and alkali erosion, and can withstand high temperature environments for a long time.
Easy to clean: The surface is smooth, not easy to absorb oil stains and food residues, and easy to clean.
4. Answers to common questions
What is the difference between high borosilicate glass and ordinary glass?
The heat resistance, impact resistance and chemical stability of high borosilicate glass are far better than ordinary glass, and it is suitable for high temperature environments, while ordinary glass is prone to bursting when exposed to heat.
Can it be heated directly on an open flame?
Most high borosilicate glass containers are not recommended to be directly burned on an open flame, unless the product specifically states that it can be used on an open flame.
Can it be heated directly after being frozen?
It is not recommended to do so. Although it is resistant to temperature difference, it is best to leave it for a while after taking it out of the refrigerator to let the temperature rise before heating.
How long is the service life?
Under normal use and maintenance, high borosilicate glass food containers can be used for many years, depending on the frequency of use and maintenance habits.
In summary, high borosilicate glass food containers can fully meet the high-temperature use needs of home, catering and other occasions. Whether it is microwave, steaming, baking or holding hot food, it can be easily competent. However, it should be noted that although it is resistant to high temperature and temperature difference, it is not indestructible. Reasonable use, avoiding violent impact, not dry burning or excessive rapid cooling and heating are the key to ensuring safety and extending service life.
Choosing high borosilicate glass food containers is not only a pursuit of healthy life, but also an attitude towards environmental friendliness. In daily life, as long as it is used and cared for correctly, it will become an indispensable good helper in the kitchen, making our dining experience safer, more comfortable and better.
As a high borosilicate glass food container company, we are committed to the research and development and production of safe, high temperature resistant and environmentally friendly high-quality products. Our borosilicate glass containers are made of high-purity raw materials and advanced technology, with a heat resistance of up to 400°C. They can be safely used in microwave ovens, ovens, steamers and other high-temperature environments. They are safe, harmless, healthy and durable. We adhere to strict quality control to ensure that each product can withstand daily hot and cold shocks, is easy to clean and beautiful, and helps users create a healthy, environmentally friendly and safe kitchen experience. Choosing us means choosing peace of mind and quality.
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