The relationship between quality and technology of aluminum door and window profiles
[China Aluminum Network] The quality of aluminum doors and windows profiles has a lot to do with the process, and even if it is the same sheet, different processing techniques will lead to different quality of doors and windows. One of the most important points for broken aluminum window profiles is hermeticity. For consumers, if their home is a closed door and window, it can achieve the effect of sound insulation and heat preservation. If it is a door with less airtightness, the effect on this is not very impressive. like.
In the process of machining aluminum doors and windows with broken bridges, there may be a lot of details involved in the places where there are no strict phenomena. Then, it is like some corners (such as the inclination of doors and windows) that are the key points of processing, and now aluminum doors and windows profiles of relatively good quality They are assembled using mechanical operations, because the machine itself has a very high degree of accuracy, so it can reduce this phenomenon, so if the use of artificially assembled aluminum doors and windows profiles, then the assembly of these corners do not perfect.
1. The PVC resin used to produce plastic profiles for doors and windows is generally SG-5 type, and it is produced using the ethylene suspension technology. This can guarantee the stability of its batch quality, which is the index.
2. Stabilizer plays a key role in the quality of the profile in the entire formulation system. The stability of the batch and the amount of addition will affect the length of the plasticization time of the material and the level of the material's thermal decomposition temperature. The balance of the corresponding lubricating agent in the stabilizer is an important criterion reflecting the quality of the stabilizer.
If the number of stabilizers added is too high, the plasticization time of the material in the cylinder and the extrusion temperature will be delayed. This will inevitably mean that the degree of plasticization of the material in the exit mode will not meet the requirement. At this time, the brittleness of the profile is very high. , will have a great impact on the welding performance.
If the amount of the stabilizer is too low, the plasticizing time and the extrusion temperature of the material will be shortened, which means that the material will be excessively plasticized in the exit mold, the low molecular material will decompose, the profile foaming, and the overall mechanical properties will be reduced.
3. The main function of CPE in the formulation system is to resist impact and improve the surface smoothness of the profile. However, the addition of the ratio affects the impact strength and dimensional change rate, but also affects the welding strength of the profile. This is related to the entire The balance between toughness and rigidity in formulas. Addition ratio is generally 8-15, below 8 or above 15 is not normal.
The principle of impact resistance ACR differs from that of CPE in the formation of a molecular framework structure. Strictly speaking, the PVC/ACR blend system is superior to the PVC/CPE blend system in terms of impact resistance.
4. The main function of the processing type ACR is to improve the plasticization of the material, and the surface is contradictory to the stabilizer. In essence, the two concepts are completely different: the stabilizer is to prevent the degradation of the material; ACR is to promote the intermolecular solution of the material. The harmony. Some phenomena: like increasing the amount of stabilizer and increasing the amount of ACR, although it can solve some of the so-called practical problems on the surface, it is not correct in the entire formulation design. The amount of ACR depends on your entire process route and the equipment's ability to plasticize.
The key factor in the production of the entire profile is what people often say about plasticization. The degree of plasticization directly affects all the indicators of the profile.
5, calcium carbonate is generally used to activate light, and its amount is the second largest factor affecting the mechanical properties of the entire section.
Tests have shown that the proper addition of high quality nano-calcium will improve the weldability of the profile to some extent.
6, the choice of lubricant is inseparable with the stabilizer, in a sense, the lubricant is a stabilizer. The key to the rationality of the entire formulation system is the lubrication balance, which is the synergistic effect of the stabilizer system. Especially when the external lubricant is excessive, it will directly affect the weld angle strength of the profile.
7. The colorant will not affect the mechanical properties of the profile.
Impact on the quality of broken aluminum doors and windows profiles is not only the processing process, what kind of hardware accessories is also an important factor. This kind of broken aluminum window and door profile itself has a higher requirement for the connection, so the quality of the accessories directly determines the sealing of the doors and windows. Therefore, if the quality of hardware accessories is better, the time for the use of doors and windows will be longer, but the price of broken aluminum doors and windows profiles will also be more expensive.
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