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【Hot attention from Chemical Machinery and Equipment Network ] In a blink of an eye, it’s the beginning of the school season.
Qingqing students will return to the classroom after finishing the summer vacation to welcome new knowledge and learn new technologies.
At the same time, many reports related to the beginning of school followed one after another, many of which could arouse discussion among the public.
Hot attention of Chemical Machinery Equipment NetworkChemical machinery and equipmentQingqing students will return to the classroom after finishing the summer vacation to welcome new knowledge and learn new technologies.
At the same time, many reports related to the beginning of school followed one after another, many of which could arouse discussion among the public.
Recently, the "Statistical Bulletin of National Education Development in 2019" released by * pointed out that in 2019, the number of primary and secondary school students in my country is about 194 million.
If calculated based on the use of 10 book covers per semester, each semester At least 1.
94 billion book covers will be used.
At present, the book covers sold on the market are mainly made of plastic materials, which means that a large part of the students complete their study time with plastic book covers.
If calculated based on the use of 10 book covers per semester, each semester At least 1.
94 billion book covers will be used.
At present, the book covers sold on the market are mainly made of plastic materials, which means that a large part of the students complete their study time with plastic book covers.
And this is also one of the important reasons for the discussion among the masses.
Regarding plastic book covers, there have been many hot spots related to "plastic book covers being toxic" before.
Most of the news did not come from institutions, but the word "plasticizer" was mentioned.
These news indicate that plastic book covers contain plasticizers, *use of it will endanger the health of children.
So is this statement right or wrong, and what is the truth behind it? Today, we might as well look at this issue from the perspective of scientific instruments.
Regarding plastic book covers, there have been many hot spots related to "plastic book covers being toxic" before.
Most of the news did not come from institutions, but the word "plasticizer" was mentioned.
These news indicate that plastic book covers contain plasticizers, *use of it will endanger the health of children.
So is this statement right or wrong, and what is the truth behind it? Today, we might as well look at this issue from the perspective of scientific instruments.
What is a plasticizer? In fact, the concept of plasticizers is very broad.
Generally speaking, additives that can increase the plasticity of polymer polymers can be called plasticizers.
They are additives for polymer materials, and the purpose is to increase the flexibility of plastics.
, It becomes easier to process.
Generally speaking, additives that can increase the plasticity of polymer polymers can be called plasticizers.
They are additives for polymer materials, and the purpose is to increase the flexibility of plastics.
, It becomes easier to process.
Objectively speaking, plasticizers are indeed toxic, and this toxicity can interfere with internal secretion and affect the development of the reproductive system.
In severe cases, it may also cause cancer.
To be honest, plasticizers are widely used in many industries, and some usage scenarios are still controversial.
But this does not mean that the plasticizer is abused.
my country has made restrictions on the use of plasticizers in food containers and packaging materials as early as 2008.
The relevant regulations were promulgated in the "GB 9685-2008 Hygienic Standards for the Use of Additives for Food Containers and Packaging Materials".
Different plasticizers used in different fields have issued various standards to restrict them, and the detection methods of plasticizers and the instrument descriptions that need to be used are also clearly stated in various standards.
In other words, plasticization my country still attaches great importance to the issue of drugs.
In severe cases, it may also cause cancer.
To be honest, plasticizers are widely used in many industries, and some usage scenarios are still controversial.
But this does not mean that the plasticizer is abused.
my country has made restrictions on the use of plasticizers in food containers and packaging materials as early as 2008.
The relevant regulations were promulgated in the "GB 9685-2008 Hygienic Standards for the Use of Additives for Food Containers and Packaging Materials".
Different plasticizers used in different fields have issued various standards to restrict them, and the detection methods of plasticizers and the instrument descriptions that need to be used are also clearly stated in various standards.
In other words, plasticization my country still attaches great importance to the issue of drugs.
So is there any plasticizer in the plastic book cover? According to recent surveys conducted by CCTV Finance, we can learn that some exist and some do not exist.
Reports show that, regardless of the illegal sale of book cover products, the current book cover materials on the market are mainly PVC and PP.
Among them, the book cover of PP material does not contain plasticizer, and the book cover of PVC material contains a small amount of increase.
Plasticizers and a small amount of polycyclic aromatic hydrocarbons (a carcinogenic substance), but the amount is small, normal use of books should not harm the human body.
Reports show that, regardless of the illegal sale of book cover products, the current book cover materials on the market are mainly PVC and PP.
Among them, the book cover of PP material does not contain plasticizer, and the book cover of PVC material contains a small amount of increase.
Plasticizers and a small amount of polycyclic aromatic hydrocarbons (a carcinogenic substance), but the amount is small, normal use of books should not harm the human body.
But to put it another way, every child is a treasure in the eyes of parents.
Even if the amount is small, I believe that many parents are still reluctant to let their children come into contact with this kind of hidden book cover.
Therefore, I believe that most parents will read this book.
Reports will take the initiative to choose PP book covers for children.
However, according to the cutscenes of book cover purchases taken in the report, at present, when most stationery stores in my country buy book covers, they usually give priority to the brand instead of looking at the material.
This also leads to parents who want to understand the material of the book cover.
judgment.
Therefore, parents need more effort in this area.
Generally speaking, in addition to carefully understanding the above production information when buying a book cover, you can also choose to send it to a special testing agency for testing for those products that are not very assured.
Such institutions generally use gas-mass spectrometry to complete the detection, and the gas-mass spectrometry is an instrument that can qualitatively and quantitatively analyze compounds, and its test results are more trustworthy.
Even if the amount is small, I believe that many parents are still reluctant to let their children come into contact with this kind of hidden book cover.
Therefore, I believe that most parents will read this book.
Reports will take the initiative to choose PP book covers for children.
However, according to the cutscenes of book cover purchases taken in the report, at present, when most stationery stores in my country buy book covers, they usually give priority to the brand instead of looking at the material.
This also leads to parents who want to understand the material of the book cover.
judgment.
Therefore, parents need more effort in this area.
Generally speaking, in addition to carefully understanding the above production information when buying a book cover, you can also choose to send it to a special testing agency for testing for those products that are not very assured.
Such institutions generally use gas-mass spectrometry to complete the detection, and the gas-mass spectrometry is an instrument that can qualitatively and quantitatively analyze compounds, and its test results are more trustworthy.
However, in addition to health problems, there are environmental problems hidden behind such a large consumption of plastic book covers.
How to solve these problems is another matter.
We will not start here.
After the article, I still wish the students a healthy and happy student time.
How to solve these problems is another matter.
We will not start here.
After the article, I still wish the students a healthy and happy student time.
Original title: Plastic book covers provoke controversy, how scientific instruments look at the problems behind
