Does PVC plastic smell and is it normal for pp plastic to smell

PVC plastics produce toxic and harmful gases (especially the processing of materials containing ** materials) at a certain processing temperature, such as CO2, SO2, nitrogen oxide (NOX), ammonia (NH3), etc., thus forming peculiar smell and odor; In addition, many compounds added to PVC plastics also have unpleasant odors, such as amines, phenols, mercaptans, peroxides, benzene, aldehydes, ketones, and some plasticizers, etc., which will also release strong chemical odors.

The natural color of PVC plastic is yellowish and translucent, and it is shiny. The transparency is better than polyethylene, polypropylene, worse than polystyrene, with the amount of additives, divided into soft and hard polyvinyl chloride, soft products are flexible and tough, feel sticky, the hardness of hard products is higher than that of low-density polyethylene, and lower than polypropylene, and there will be whitening phenomenon at the inflection. Common products:

Plates, pipes, shoe soles, toys, doors and windows, wire skins, stationery, etc. It is a polymer material that uses one chlorine atom to replace one hydrogen atom in polyethylene.

PP plastic has an abnormal smell.

PP plastic will not have a noticeable taste because it is a non-toxic, odorless, and odorless plastic. However, if PP plastic is added with certain chemicals during the production process, or if it is subjected to conditions such as high temperature during its use, some odors will occur. If you find that PP plastic has a distinct taste, it is recommended to stop using it and consult relevant professionals.

Application of PP plastic: Dress up the land.

1. Packaging industry.

PP plastic bags, PP plastic boxes, PP plastic pallets, etc.

2. Household necessities.

PP plastic water cups, PP plastic tableware, PP plastic trash cans, etc.

3. Textile industry.

PP plastic fibers are used to make nonwovens, carpets, fabrics, etc.

4. Auto parts.

PP plastic body, front bumper, interior parts, etc.

5. Medical devices.

Syringes, infusion bottles, blood bags, etc. made of PP plastic.

6. Electronic appliances.

Cable protectors, battery boxes, TV enclosures, etc. made of PP plastic. <>

The reasons for the peculiar smell of plastics: the material is relatively mixed, the material is processed and degraded many times, the decomposition of small molecule materials in the material, and sometimes the moisture and some materials play a strong role in accelerating the degradation.

Due to the addition of additives or high-quality materials to plastic products, plastic products carry ethylene, hydrogen sulfide, sulfur dioxide, amines, ammonia odor or other peculiar odors. Some of the odors are released after the product has been stored for a period of time; Sometimes it is latent in plastic products, and these harmful gases are released from secondary processing, which constitutes the odor of plastic.

Typical ways to address odors are the addition of gas adsorbents and antimicrobial agents to plastics to prevent unpleasant odors due to bacteria and fungi. Residual odors can also be reduced by solvent extraction and venting.

Organic solvent extraction methods help to remove odor-producing compounds. A recent solvent extraction method that also uses supercritical carbon dioxide as a solvent has been applied to HDPE and PET to remove odor contaminants from oil containers, pesticide containers, and other waste devices. The benefit of CO2 extractants is that they do not pose the problem of post-processing, which is cumbersome with organic solvents.

The odor removal device is an integral part of the waste plastic pellet extruder, which can also effectively remove some strong volatile compounds that produce odors.

PVC plastic hose is non-toxic, and its main raw material is PVC material.

PVC is polyvinyl chloride, which is a plastic product synthesized from 43% oil and 57% salt. Compared with other types of plastic products, PVC uses raw material more effectively and reduces fuel consumption. At the same time, the energy consumption of PVC manufacturing is also very low.

And in the later stage of the use of PVC products, they can be converted into other new products or incinerated to obtain energy.

PVC pipes are not toxic.

PVC (full name polyvinylchlorid), the main ingredient is polyvinyl chloride, and other components are added to enhance its heat resistance, toughness, ductility, etc. The top layer of this surface ** is lacquer, the main component in the middle is polyvinyl chloride, and the bottom layer is the back-coated adhesive.

You can ask for a bad taste, I'll produce it.

Ventilation method: use air circulation to remove the smell of diluted plastic, or use an electric fan to blow it. Add the fragrance:

This method can mask the odor and cannot eliminate it. Aromatic deodorizers are generally used in toys, daily goods, cosmetic containers, household appliances and gardening equipment. Plant Absorption:

Plants have a strong ability to absorb undesirable gases, such as cacti, spider plants, reeds, ivy, etc. <

1. Ventilation method: use air circulation to take away the smell of diluted plastic, or use an electric fan to blow.

2. Add fragrance: This method can cover the odor and cannot eliminate it. Aromatic deodorizers are generally used in toys, daily goods, cosmetic containers, household appliances and gardening equipment.

3. Plant absorption method: plants have a strong ability to absorb bad gases, such as cactus, spider plant, reed, ivy, iron tree, chrysanthemum, monstera, silver queen, golden amber, scattered tail sunflower, osmanthus, white palm, clemat sunflower, ** wood, weeping leaf Rong, Milan, etc. Vanilla plants have a better effect on absorbing plastics, such as spider plants, tiger tail plants, etc.