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What are two disadvantages of using plastic lumber?

linkedin.com - Main advantages and disadvantages of plastic wood composites - LinkedIn

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1) Compared with wood.

1) can be machined into similar appearances with wood, but there is no wood, wooden thorn and twill, better than the general wood size, and it is not easy to produce cracks and warped in normal use. 2) has excellent physical chemistry characteristics, resistance to wood, insect, and aging, low-resistance than wood water absorption, is not easy to produce moisture absorption, so water-proof performance is better than wood, and is easy to clean. 3) The products can be recycled and reused, and can also be biodegradable, and environmentally friendly. 4) Antibacterial agent, antioxidant, antioxidant, and foaming agent such as antibacterial agents, antioxidants, antioxidants, and foaming agents can be added as needed to increase the corresponding antibacterial mildew, anti-alcohol, anti-fading and weight loss. 5) Hydraulic workability of plastic, easy to make various shapes of complex articles, especially suitable for mass production. 6) Various properties such as surface hardness, wear resistance, and ultraviolet irradiation can be improved by co-extrusion of surface layers. 8) The service life is longer than ordinary wood, and the maintenance cost is low.

(2) Compared with plastic

1) With the secondary process of wood, it can be sawed, planing, bonding, can be fixed with nails or screws, easy to repair. 2) The source of raw materials is wide, and the cost of product is lower than the same plastic products.

3) Similar to the appearance and feel of natural wood.

4) Surface hardness is higher than plastic.

The disadvantage of plastic wood composites is that the toughness is lower than the maternal plastic, the bending strength is lower than the hardwood, the creep performance is poor than the wood, and the linear thermal expansion coefficient is large than the wood. But these shortcomings are only necessary to pay attention to the engineering design process, and it is generally not affected. Since most of the raw materials of the plastic wood composite product is the waste of industrial and agricultural, it is conducive to environmental protection. And the products can replace wood and plastics, saving large numbers of wood and petroleum resources, achieving comprehensive utilization of resources, and can be recycled after product scrap, and environmentally friendly, and can promote the development of circular economy, promote and accelerate plastic wood composite materials. Research and application development. In order to further improve the performance of the plastic wood composite, the conventional plastic wood composite extruded profiles, the co-extrusion techniques excellent in surface coextrusion, have been mature, and the replacement of the product is promoted. The injection molded article of plastic wood composite materials has become a hot spot in R & D in recent years. The new application field is continuously expanding, and the plastic wood composite product products are moving towards diversification, high-end, and plastic wood composite materials have become my country's strategic. The emerging industry has attracted the attention of the government, and the government provides a preferential policy for the development of plastic wood composite materials industry.

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Why you should not make your bed every morning?

Here's the thing, we sweat when we sleep. If you make your bed right when you wake up, you trap that moisture in the sheets allowing dust mites to thrive. Researchers found a simple solution. Leaving the bed unmade allowed the moisture to dry up reducing the dust mites in the bed.

wcnc.com - Here's why you should wait to make your bed - WCNC

When it comes to the actual science, making your bed right away could have some really gross consequences.

Example video title will go here for this video

CHARLOTTE, N.C. — Don't make your bed quite yet, because if you do, there could be some gross consequences.

Let's connect the dots.

It's advice you often see in self-help books or those top 10 tips to being more productive: Make your bed as soon as you're out of it. And a lot of experts agree doing it can lower your stress and set you up with a feeling of accomplishment right when you start your day. But when it comes to the actual science, making your bed right away could have some really gross consequences. You might not want to hear it but we share our beds with millions of dust mites. According to research out of Kingston University London, dust mites thrive in the dark damp spaces in your bed and they're more than just gross they actually can produce an allergen that triggers asthma-like symptoms. Here's the thing, we sweat when we sleep. If you make your bed right when you wake up, you trap that moisture in the sheets allowing dust mites to thrive.

Researchers found a simple solution.

Leaving the bed unmade allowed the moisture to dry up reducing the dust mites in the bed. If you don't want to spend all day staring at a messy bed cleaning experts recommend waiting at least an hour before you make it.

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