Chlorinated Polyethylene(CPE) 1. CPE is a kind of saturated rubber, which has excellent heat-resistant oxygen aging, ozone aging, acid and alkali resistance, and chemical resistance.
2. CPE has general oil resistance. Among them, it has excellent resistance to ASTM No. 1 oil and ASTM No. 2 oil, which is equivalent to NBR; and it has excellent resistance to ASTM No. 3 oil, which is better than CR and is equivalent to CSM.
3. CPE contains chlorine element, has excellent flame retardant performance, and has the characteristics of burning and dripping. It can be combined with antimony flame retardant, chlorinated paraffin, and Al(OH)3 in an appropriate ratio to obtain a flame retardant material with excellent flame retardancy and low cost.
4. CPE is non-toxic, does not contain heavy metals and PAHs, and it fully meets environmental protection requirements.
5. CPE has high filling performance and can be manufactured to meet various performance requirements. The processing performance of CPE is good, and the Mooney viscosity is available in a variety of grades between 50-100.
CPE 135A, Chemical Chlorinated Polyethylene,Modifier Chlorinated Polyethylene,Cpe Chlorinated Polyethylene Henan Shunbang Chemical Industry CO.,Ltd , https://www.sbcpe.com
Q: What to change
The old house is best replaced as a whole
According to Ma Mingyu, engineer of the Ministry of Public Security’s Ministry of Public Security’s Security and Police Electronic Products Quality Inspection Center, many old communities’ “security doors†are casually installed with an ordinary iron or steel door in front of a wooden door. Strictly speaking, These doors can not be called security doors, and some communities do not even have iron gates. With the increase of social mobility and the property management of the old communities, most of them are not in place. The 'security door' in the home can no longer meet the needs of ordinary anti-theft services. Therefore, it is recommended that the owners whose age is more than 10 years should replace the security door as a whole.
There is no need to replace the anti-theft door in the newly built community, just replace the lock. However, Ma Mingyu said that due to the lack of corresponding understanding of some security developers on anti-theft doors, anti-theft awareness is not high, and the anti-theft door may be unqualified. The landlord is required to ask the developer to provide a security door detection report when handing in the room. If it is not possible to provide it, it is better to consider replacing the security door as a whole during the renovation.
Q: How to pick
Four 'multiple' security doors are of good quality
What kind of security door is best? Ma Mingyu introduced that security doors are divided into steel, stainless steel, steel wood, copper or other composite materials. Among them, steel and steel wood security doors are the most common. The structure of the steel security door includes the outer panel (that is, the panel that stands outside the door) and the inner panel (the panel that stands inside the door). In the middle is a layer of steel skeleton. A good steel anti-theft door skeleton is filled with materials such as asbestos, which has the functions of fire prevention, heat preservation and sound insulation. Steel wood security doors have the same structure as steel security doors except that a layer of wood veneers is added on the surface.
According to the different anti-vandalism performance, China's anti-theft door mandatory standards - "General technical conditions for anti-theft security doors," from high to low security door is divided into A, B, C, D four security levels, and provisions of the business must be in theft The hinges on the inside of the door are marked with Chinese characters in a prominent position about 160 cm above the ground, indicating their safety level. In addition, the thickness of the door frame and the panel thickness of the door leaf must also meet the corresponding requirements. The owner can remove the cat's eyes and doorbells to judge whether the thickness of the door frame and the thickness of the door panel meet the national mandatory standards.
How to identify the same level of security door? According to experts, besides observing the appearance, if the surface of the lacquer layer is free from air bubbles and uniform in color, if the grades are the same, the weight is larger, the locking points are more, the steel frame is denser, and the security protection of the lock is more, the quality is relatively better. Since it is difficult to see the skeleton of the security door, the owner can refer to the product section (profile) provided by the dealer and can also judge from the weight. 'In general, the greater the weight, the denser the internal steel skeleton and the more secure and secure the door. 'Lock protection includes prevention of drill bits and protective sleeves, in which the guard drill bit covers the lock head (eye) and can rotate. The protective sleeve consists of several pieces of steel on the lock in the door. Both of these protective measures prevent the locks from being artificially damaged, and the owner can see these configurations during installation.
Q: How to buy
Fine contract signed to avoid disputes
Does the 'entrance door' and 'guard door' indicated on the product label are security doors? Ma Mingyu reminded the owners to be careful about these titles at the time of purchase. He explained that entrance doors, anti-authentication doors, and so on are the same as those used by former merchants for security doors. Some of the entrance doors and armor doors that are currently on the market can meet the requirements of the new national standard, and some cannot. Up to standard.
When the owners bought those products that did not meet the standard, once there was a legal dispute, the merchants stated that they were selling the door to the house instead of the security door, so they could not have to comply with the "General Technical Conditions for the Security Doors," which caused the owners to safeguard their rights.
He reminded the majority of owners that when signing a contract, they must indicate whether they purchased the security door or their quality in line with all the requirements of the "General Technical Conditions for the Security Door". At the same time, the merchant is required to indicate on the invoice that it is selling a security door. Not other names.
Q: How to install
Mounting attention to ground height
Longfa Decoration Engineering Department manager Miao Fuquan reminded that when installing the security door, if the door hole is not square or the size and the security door can't fit, the wall should be leveled. If the anti-theft door is installed before the ground is processed, be sure to ask what the height of the worker's floor is after processing, and send the data back to the door factory so as to avoid the situation that the ground is too high during installation. Anti-theft door frames and walls should be closely connected, filled with polyurethane or cement.
After installing the security door, the industry mainly inspects keys, invoices, and after-sales orders, and other accessories and materials, so there can be no less key situation. A good security door should be easily and flexibly opened with a key, and the door should be flexible and free from jams, abnormal sounds, etc. during the opening of 90 degrees.
Due to the poor quality of anti-theft doors installed by some community developers, some owners and some owners who are engaged in the renovation of second-hand houses have the need to replace security doors. But does it really need to replace the security door? What kind of security door performance is higher? Most owners feel out of mind. The reporter interviewed relevant experts and experts suggested that, for the sake of insurance, owners whose tenements are older than ten years and developers cannot provide test reports should replace the security doors. In the purchase, the owners should guard against traps such as 'entrance door' and 'defense door'.
Release date:2008/12/2 10:03:32