Is it harmful to put plastic bags in the refrigerator? In response to this, there have also been experiments conducted by relevant research institutions, and the final experiments have shown that the so-called “plastic bags cannot be placed in the refrigerator” are pure rumors.
The ex...
In this issue, we continue our understanding of plastics from a chemical perspective.
Properties of plastics: The properties of plastics depend on the chemical composition of the subunits, how those subunits are arranged, and how they are processed. All plastics are polymers, but not all polymers...
We usually learn about plastics in terms of appearance, color, tension, size, etc., so what about plastics from a chemical point of view?
Synthetic resin is the main component of plastic, and its content in plastic is generally 40% to 100%. Due to the large content and the properties of resins th...
Is the degradation of plastic a chemical change or a physical change? The obvious answer is chemical change. In the process of extrusion and heating molding of plastic bags and under the influence of various factors in the external environment, chemical changes such as relative molecular weight r...
Pulp is a fibrous material obtained from plant fibers by different processing methods. It can be divided into mechanical pulp, chemical pulp and chemical mechanical pulp according to the processing method; it can also be divided into wood pulp, straw pulp, hemp pulp, reed pulp, sugarcane pulp, ba...
The quality of pulp is mainly determined by its fiber morphology and fiber purity. The properties of these two aspects are mainly determined by the variety of raw materials used, as well as the manufacturing method and processing depth.
In terms of fiber morphology, the main factors are the avera...
Most of the products we buy in life are clearly marked with the expiration date, but as a kind of commodity packaging, do plastic packaging bags have a shelf life? The answer is yes.
1. The shelf life of plastic packaging bags is the shelf life of the product itself.
Most plastic packaging bags a...
“05″: Reusable after careful cleaning, heat resistant to 130°C. This is the only material that can be heated in a microwave oven, so it becomes the raw material for making microwave lunch boxes. High temperature resistance of 130 ° C, melting point as high as 167 ° C, poor transparenc...
Careful friends will find that most plastic bottles will have numbers and some simple patterns on them, so what do these numbers represent?
“01″: It is best to throw it away after drinking, heat-resistant to 70°C. Commonly used in bottled beverages such as mineral water and carbonated...
Newly bought plastic products sometimes have a strong or weak plastic smell, which is unacceptable to many people, so how to remove these smells?
1. Put it in a ventilated place and let the sun dry. Some of the flavor will be removed, but it may turn yellow.
2. Clean the inside of the cup with de...
I went back to my hometown two days ago, because I used the cross-cut method my mother never used to tie the plastic bag, which made it difficult for my mother to open it for a while. In the end, my childhood with the plastic bag was complete,,,
There are many ways to tie plastic bags, and almost...
Now everyone is advocating garbage classification. Garbage classification refers to the general term for a series of activities in which garbage is sorted, stored, placed and transported according to certain regulations or standards, thereby turning it into public resources. So what kind of garba...
