Polyurethane in Building and Construction

Today's homes demand high-performance materials that are strong, yet lightweight; that perform well, yet are easily installed; and that are durable, but also versatile.  Building-material quality and performance must be exceptionally reliable, which is why polyurethane products can be an excellent choice for homes and buildings.


Polyurethane's Functional Uses

One outstanding use of polyurethane is rigid foam, which has unique insulating properties that make it ideal for walls and roofs for new homes and when remodeling an existing home. In fact, the insulating quality of rigid polyurethane foam is high, it enables builders to make walls thinner—but just as quiet, warm and sturdy—and roof profiles lower, creating more space for your family. Rigid foam can also save homeowners money, both in reduced construction costs and lower utility bills.

Sprayed polyurethane foam provides weatherproof sealants, forms a seamless layer of insulation, fills gaps and seams during application, and covers irregular, hard-to-insulate shapes. In fact, closed cell spray polyurethane foam insulation forms an air barrier and moisture barrier. Spray foam insulation can also reduce drafts while creating sturdier, quieter buildings. Polyurethane insulating products are also often structurally self-supporting, and can be attached to a wide range of substrates while requiring no additional adhesive.


When combined with the proper materials, polyurethanes perform well as external weather and moisture barriers. High-performance polyurethane foam insulation can be spray-applied to various substrates, or molded to special shapes in large sizes.





































Polyurethanes Increase Creative Options

Polyurethane building materials add design flexibility to new-home and remodeling projects. Foam-core panels offer a wide variety of colors and profiles for walls and roofs, while foam-cored entry doors and garage doors are available in different finishes and styles.


Structural insulated panels feature a polyiso or polyurethane foam-core insulation with both an exterior and interior facing, and can be made part of the structure of a building. Facing materials include gypsum, engineered wood or natural wood products. These structural insulated panels improve the look and utility of the home, speed construction, and reduce the amount of expensive wood necessary for structural framing. The finished product can save time, energy and construction costs.

Pollution inspectors sharply criticize Tianjin, Anhui, Shanxi

By ZHENG JINRAN | China Daily | Updated: 2017-07-31 06:46

Environmental inspectors sent by the central government uncovered severe problems in Tianjin and the provinces of Anhui and Shanxi during a monthlong review and said slack leadership has led to environmental degradation in some areas.

The inspectors transferred 11,527 pollution-related cases to the provincial-level governments, following the highest-level environmental inspection since late April.

The governments are required to submit improvement plans within 30 days and make them public.

In the three provincial-level areas, 1,686 government officials had been held accountable for pollution as of the end of June. Officials from Shanxi were the most numerous－more than 1,000. Another 136 were detained, according to Ministry of Environmental Protection statements on Saturday and Sunday.

About 10,000 polluting companies were ordered to suspend production or shut down by the end of June, the ministry said. Of those, about half (4,331) were from Tianjin. Environmental authorities have issued fines totaling 1.25 billion yuan ($185 million).

The common thread in these cases was that leadership was weak and officials failed to give sufficient attention to pollution control.

Tianjin received an unusually harsh evaluation.

"There is a clear gap in Tianjin in meeting the requirements from the central government to match its position as a municipality and meet the expectations of the public," inspectors said on Saturday.

Some leaders did not insist on adherence to tough measures on air pollution, and air quality actually worsened in some periods. Likewise, the bureaus responsible for agriculture and urban greening did not work together, but evaded their duty to build a garbage processing plant, said Jiang Jufeng, head of the inspection team.

In Shanxi, inspectors also found that insufficient attention had been paid by provincial and city leaders, as the concentration of major airborne pollutants increased in 2016 and continued to worsen this year.

Leaders in Lyuliang, Shanxi province, were summoned to talk with the ministry twice because of severe pollution. But they did not pay sufficient attention, and measures to correct problems lagged behind schedule, said Yang Song, the team leader in Shanxi.

For example, 966 small coal-fired boilers in the city, which should have been phased out by the end of 2014, were still in operation at the end of 2016, hurting air quality.

In addition, six coal mines continued to operate illegally inside a natural protection zone in Jinzhong.

In Anhui, inspectors found that the provincial water resources bureau did not supervise drains, and that wastewater contained excessive pollutants. Also, officials in Hefei's Binhu New District allowed construction waste to pile up and harm wetland, they said.

In some places in the three areas, half the sewage was discharged without treatment.

Source: http://usa.chinadaily.com.cn/china/2017-07/31/content_30298900.htm

The seventh round strict air pollution inspection completed

By Du Xuanyi

BEIJING, Jul. 23 (CENEWS)-The seventh round of the yearlong strict inspection on air pollution control had been completed by Jul. 20. Between Jul. 7 and Jul. 20, the inspection teams checked a total of 5,322 businesses (organizations), and found environmental incompliances in 1,389 of them. Of the incompliant enterprises, 347 were unlicensed small polluters, two did not attain emission standards, 252 failed to install pollution control facilities, 160 failed to keep such facilities in normal operations, 536 had VOCs control problems, and four had other problems.

The inspection results showed VOCs control was the primary pollution problem, which accounted for 38.6 percent of the total problems revealed by this round of inspection. Tangshan Municipality is the home to 54 VOCs emitters, the largest number in the 28 target cities. From the industrial perspective, the rubber and plastics manufacturing, machinery manufacturing, coating and spraying, plywood, packaging and printing industries contributed the largest share of VOCs emission.

There were 347 unlicensed small polluters which violated the environmental legislations, accounting for 25.0 percent of the total incompliant enterprises. The fugitive emission was serious.

Starting Jul. 21, the inspection team launched the eighth round strict inspection over the air pollution in the Beijing-Tianjin-Hebei region and surrounding areas.

On the sidelines of the eighth strict inspection, the Ministry is about to initiate six rounds thematic inspection in Hebei and Henan on their performance in the implementation of the detailed plans for implementing the action plan against air pollution. The thematic inspection, which will last for 84 days, targets at eight cities in Hebei and seven cities in Henan, with each city under the scrutiny of an inspection team.

The Ministry required that the inspection teams touring Hebei and Henan provinces strengthen the inspection and urge the local governments and relevant departments at all levels to take the responsibilities for air pollution control and make sure the tasks specified in the local plans for fighting air pollution to be completed before deadlines.

(This English version is for your reference only.In case any discrepancy exists between the Chinese and English context, the Chinese version shall prevail.)

*中华人民共和国环境保护部：The Ministry of Environmental Protection of the People's Republic of China (MEP)

Source: http://english.sepa.gov.cn/News_service/news_release/201707/t20170727_418638.shtml

PU (Polyurethane) Ceiling Roses and Domes

What is Ceiling Rose?

Ceiling Rose (rosette/center/medallion) is a decorative element which is attached to the ceiling, and it usually has affixed light or chandelier in the center.  Historically Ceiling Centers were affixed to the ceilings to protect ceilings from charring and heat caused by gas lights and candles as ceiling roses were cheaper and easier to re-decorate than an entire ceiling. Typically, rosettes are round/oval shapes and present a huge range of patterns and ornamental designs which have been influenced by different architectural styles such as Victorian, Edwardian, Roman, Art Deco and others. Ceiling Roses are decorative ceiling elements, and they shouldn't solely support light fixtures, for that occasion it's better to install a supporting member before affixing a ceiling rose. In order to choose the desired ceiling rose, please take into consideration your room size and style ensuring they match. To enlarge any ceiling rose diameter, it is possible to use a ring which surrounds a ceiling center.

What is a Dome?

A dome is an architectural element in which the upper half of a sphere is hollow which provides a great optical effect. Domes have a very long architectural history which date back to the Mesopotamia period and can be found in the Ancient world and Roman, Hellenistic, Chinese, Persian architectures. Contemporary domes can be found in religious buildings, sports stadiums, legislative structures and all kinds of houses in different adaptations. Personal households and deluxe services apartments usually use domes with the particular light source (chandelier) as it provides a striking aesthetic effect. Domes often have a lighting trough around the perimeter to light the inside.

Polyurethane Interior Ornaments

Architectural decorative ornaments greatly improves the appearance of your interior. They make your interior appear more personalized and more unique.  We offer a wide variety of decorative interior products made from High-Density Polyurethane, which will not only make any room beautiful, but will also make it more comfortable to live in. 

Choose from our crisp, clean detailed decorative art such as ceiling medallions, brackets, art niches, and ceiling domes to make your rooms stunning.  An inexpensive way to achieve the traditional old world look. These decorative Ornaments are perfect for all sorts of remodelling and designing projects to greatly enhance interiors. 

Traditionally, Ceiling Roses are used as a decorative piece on the ceilings to add grandeur to the chandeliers. Today, some designers are using ceiling roses as an decorative ornament made by polyurethane for the ceilings and walls.

 

Ceiling domes from the Ouneng is designed to transform your ceiling to provide a pleasant illusion of depth and class. The ceiling domes are made of fibre reinforced polyurethane(PU). It is a widely used polyurethane decorative products. 

The decorative corbels are normally applied to further enhance the columns and ceiling areas.

Today, some furniture designers are using these corbels as furniture parts as part of the ornaments.

Niches are designed to decorate the walls normally together with lighting and decorative ornaments. Some of the niches need an opening on the walls while some are designed to fit flat walls.

Difference between pvc and polyurethane molding

PVC and polyurethane molding which is better? Wall decorative moldings have their own advantages, but polyurethane molding is more expensive than pvc. Now, let us talk about the difference between pvc and polyurethane molding.

Features of pvc molding

• PVC decorative molding is light weight, heat insulation, moisture, flame retardant, anti-corrosion.
• Stability, good dielectric, durable, anti-aging, easy welding and bonding.
• High flexible bending and strong impact toughness, high elongation at break.
• Smooth surface, bright color, decorative, wide applications.
• PVC decorative material is stable, pure color, rich embossed.
• The construction process is simple, seamless construction without lamination defects and easy to install.

Disadvantages of pvc molding

• Light weight, bad texture
• Add some chemicals, harmful to the human body after long time uses.
• Color is easy to fade, yellow and get old.

Features of polyurethane molding

• PU molding is anti to borer, moisture, and mildew, will not be affected by weather changes and cracking or deformation, can be washed, long life.
• Flame retardant, non-spontaneous combustion, can be automatically extinguished after leaving fire.
• Light weight, good hardness, flexibility and toughness. Ease of installation using standard woodworking equipment – cut or sand. can be bent into a variety of curvature of the shape. The time spent on construction is less than the normal gypsum and wood.
• Diversity, generally white as the standard in color, can be free with color on the basis of the white, painted gold, washed white, make-up, antique silver, bronze and other special effects.
• Clear surface pattern, realistic.
• Lightweight, long life, not easy to deformation, the surface can be paint finish.
• Can be applied to decorate home, high-end residential, villas, conference halls, clubs, leisure clubs, hotels, bars, etc.

Difference between pvc and polyurethane molding

PU is better in heat stability, fire resistance, corrosion resistance than PVC.

Material Features	PU	PVC
Weight	light	a bit heavy
Flexibility	high	poor
Waterproof	good	poor
Heat resistant	good	poor
Installation	a little complicated  than PVC	easy

The advantages of PU molding

PU molding has many advantages compared with wood. Now Ouneng tell the advantages of PU moldings from its material, characteristics, usages and other aspects.

onerpu.com--crown molding

A. PU molding is easy and well to be colored, can be painted a variety of colors, latex paint and oily paint in the surface, can maintain a long time after painting. Imitation stone, wood, and metal, vividly and beauty.

B. Lightweight, a main features of PU moldings products. Fire resistant, waterproof, impervious to moisture and insects, anti-cracking. Simple and convenient, suitable for a variety of indoor and outdoor decoration.

C. Can be nailed, can be sawing, planing, washable, flexible shape, no crack, no formaldehyde, can be used in indoor and outdoor.

onerpu.com--plain molding

D. Easy to be installed, clear and natural pattern, elegant and luxurious.

E. Convenient construction: Lightweight,can be pasted directly , save labor. And easy to process, can be sawing, planing. There is almost no waste in installation, economic and environmental protection.

F. Environmental protection: synthetic fiber is the raw materials, reducing the deforestation, and reach the national decorative engineering green product standards.

G. PU molding is fire resistance: the product through the national B2 standard fire detection , can be fully non-spontaneous combustion, non-combustion characteristics.

H. PU molding is waterproof: it doesn’t absorb water, no deformation, both mildew. Easy to clean, without fade.

I. PU molding is light weight, good hardness, with good flexibility and toughness. Not cracked, no deformation, and durable.

What material is polyurethane (PU)

What material is polyurethane (pu)? 
PU products raw materials are high purity urethane, through the foam, injection pressure, molding, constant temperature treatment and other processes. The characteristics of PU product is it can maintain stability for many years.

PU moldings are personalized, stylized, artistic, and healthy that are more popular in building decoration. Haining Ouneng Arts & Crafts Co., Ltd is a professional PU decorative building materials manufacturer, the main PU products are PU moldings, wall ornaments, decorated onlays, windows & door trims, ceiling decors like ceiling medallions, ceiling domes, and ceiling rings, columns & pilasters, decorative corbels and pedestal.

Onerpu.com showroom

Characters
1、Low Cost:
The surface painting is finished and installation time very short;can be planed, sawed, nailed, and glued by yourself, 80% cost saved than using wood and concrete.
2、Light weight:
Good resilience and tenactity, light and hard.
3、Entirety:
Classic, elegant and uniform.
4、Fire-proof:
Reach the standard of no combustion, uncombustion supporting and unburning.
5、Water-proof:
No moisture absorbing, water permeation and mildew arising.
6、Anti-erosion:
Resist acid and alkli.
7、Environment protection:
using polyester as raw material to aviod lumbering.

Installation Guide

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