الوصف
About the biological buffer Tris, I believe many people have seen
its vast power, skin care products, pharmaceutical intermediates,
pharmaceutical excipients, buffers everywhere, but it also has an
application that many people do not understand, today we will
explore what role Tris plays in coatings.
Tris mainly plays the following four roles in the coating
preparation process: pH regulator, cross-linking accelerator,
polyester coating raw material and phase change core material.
Here's how Tris plays these roles.
1. PH regulator
Tris is a weak base and its PKA is 8.1 at *5 ℃; According to the
buffer theory, the effective buffer range of Tris buffer is between
pH 7.0 and 9.2. The pH value of Tris base aqueous solution is about
*0.5. Hydrochloric acid is usually added to adjust the pH value to
the desired value
The buffer solution with this pH value can be obtained when the pH
value is required.
2. Crosslinking accelerator
Tris, as a crosslinking promoter, can bridge the linear molecules,
so that multiple linear molecules can be bonded and crosslinked to
form a network structure. It is a substance that promotes or
regulates the formation of covalent or ionic bonds between polymer
molecular chains. Polyols are often used as diplomatic agents in
the preparation of coatings.
3. Polyester coating materials
Polyester oligomer can be prepared by reaction of polyol, polybasic
acid, catalyst and antioxidant, which can be used as coating
composition.
4. Phase change core material
When the temperature reaches the phase transition temperature, the
structure of polyol phase change materials will change from layered
body centered structure to isotropic face centered structure. At
the same time, the hydrogen bond between layers will break, and the
molecules will change from crystalline state to amorphous state,
releasing the bond energy.
The solid-solid phase change enthalpy of polyols is large, which is
related to the number of hydroxyl groups in each molecule of
polyols. The advantages of Tris are large phase change enthalpy,
stable performance and long service life.
Desheng has *5 years of rich experience in developing and producing
biological buffers. It can provide high-quality raw materials for
Tris products. The products are white crystal powder with purity
> *9%. Specific indicators can also be customized. Besides Tris,
Desheng has HEPES, caps, mops and pipes. Now the company is
actively expanding new fields, It can provide nucleic acid
detection raw material, virus preservation solution and gel free
raw material, Carbomer.
بلد: |
China |
نموذج رقم: |
DS-TRIS
|
سعر فوب: |
( Negotiable ) (قابل للتفاوض)
أحصل على آخر سعر
|
الموقع: |
hubei china |
سعر الحد الأدنى للطلب: |
- |
الحد الأدني للطلب: |
25 Kilogram |
تفاصيل التغليف: |
25kg / barrel |
موعد التسليم: |
3-5 days delivery |
القدرة على التوريد: |
2000 Kilogram per Day |
نوع الدفع: |
T/T, D/A, PayPal |
مجموعة المنتج : |
Tris(Hydroxymethyl)Aminomethane
|