Butyl emulsions and PVA powders are used in waterproofing and mortar

PVA。PPT

、、、、TVOC，。

PVA，PVA、、PVA、PVA。

、

• (VAM)：Tg28℃
• （ St ）：Tg100℃
• （MMA)：Tg105℃
• （BA）：Tg-54℃
• (E)：Tg-68℃
• (2-EHA)：Tg-84℃
• （BD）：Tg-106℃

、

，、、、、、，。

：

• :S+MMA+BA
• : S+BD
• : MMA+BA+2-EHA
• Lotion: VAM+E:VAE
• Vinegar Acrylic Emulsion: VAM++MMA+BA

Third, the advantages of styrene-butadiene emulsion in waterproof coatings

• High mechanical properties: bonding strength, compressive and flexural strength
• Excellent water resistance: excellent adhesion, good elasticity
• Good compatibility of cement: stable material and stable viscosity under high alkaline conditions
• Very low TVOC: Will not decompose VOC substances under alkaline conditions

Fourth, the characteristics of styrene-butadiene emulsion

1.
Cross-linking can occur

• It has a flexible double bond and is a non-polar bond with strong flexibility.
  
• Some double bonds can be cross-linked to increase bond energy and strength.
  So as to achieve a balance between flexibility and rigidity.
  
• However, BA and EHA have only flexibility, strong polarity, and no resilience.
  

2.
Butadiene styrene emulsion is resistant to hydrolysis

• The above acrylate monomer ester groups will undergo hydrolysis under strong alkaline conditions.
  
• The styrene and butadiene monomers of the styrene-butadiene emulsion are very stable under alkaline conditions and will not be hydrolyzed.
  
• This is very important in the construction environment because common cementitious materials such as cement are strongly alkaline.
  

3.
The styrene butadiene rubber waterproof membrane has excellent water resistance:

The comparison of the state of the benchmark concrete slab after coating the waterproof membrane and drying for three days and soaking in water for 3 months shows that the styrene butadiene rubber waterproof membrane has better water resistance.

4.
The low TVOC release of styrene-butadiene emulsion under high alkaline conditions has excellent environmental protection:

• The long-term TVOC released standards such as EC1 and A+ can better simulate the real situation in buildings, and therefore have been widely used in European and American countries;
• Acrylic polymers in conventional JS waterproofing will slowly hydrolyze under alkaline conditions and release VOCs, while styrene-butadiene polymers will not be hydrolyzed.
  Therefore, the amount of TVOC released is much lower than that of conventional products, which can easily meet the requirements of EC1+, A+, etc.
  .
  

Remarks:

• EMICODE certification: In January 1997, Germany established GEV (German Association for the Control of Volatile Emissions in Floor Installation Materials, Adhesives and Building Materials).
  
• A+ is the mark with the highest environmental protection level in the French VOC label.
  Émissions dans l'air intérieur, English corresponds to Emissions in indoor air, and Chinese means "indoor air emissions".
  
• Suitable for: floor coverings, paints and varnishes, windows and doors, walls and ceiling panels, implemented in 2012.
  

5.
Performance comparison with other emulsions

Based on the K waterproof formula with a liquid-to-powder ratio of 1:2.
78, JC/T2090-2011 standard: Type I (universal type): compressive strength ≥12MPa, flexural strength ≥4MPa, and bonding strength ≥0.
7MPa.

The trend comparison of the viscosity change with time and the trend comparison of the viscosity change rate with time show that the styrene-butadiene emulsion has good cement compatibility.

Six, the specific requirements of EC1+ and A+

German EMICODE certification, the column height standard within the frame

French A+ certification, the highest standard within the frame

7.
JG/T 481-2015 Low Volatile Organic Compound Waterborne Interior Wall Coating Material

TVOC emission: the total amount of volatile organic compounds released by the sample into the air under specified conditions.

VOC content: the organic volatile content in the sample.

8.
TVOC of different types of waterproof coatings

Extracted from: Emission of Volatile Organic Compounds(VOCs) from Dispersion and Cementitious Waterproofing Products.

Nine, the main components of two-component cement-based waterproof TVOC

Extracted from: Emission of Volatile Organic Compounds(VOCs) from Dispersion and Cementitious Waterproofing Products.

10.
Trinseo's highly environmentally friendly styrene butadiene emulsion

One-component waterproof coating model: LIGOS C3615, LIGOS C3617
two-component waterproof mortar Model: LIGOS M3618, LIGOS M3628
two-component flexible waterproof coating Model: PRS-2874L+ (under development)

Different models of Trinseo's highly environmentally friendly styrene butadiene emulsions have the following solid content, viscosity, Tg value, particle size, applications and characteristics:

• M3618: solid content 46%, viscosity <500, Tg value 8°C, particle size 115nm, can be used in waterproof mortar, cement modifier, has good cement compatibility and excellent environmental performance.
  
• M3628: solid content 50%, viscosity <700, Tg value 16°C, particle size 145nm, can be used in waterproof mortar, cement modifier, has good cement compatibility and excellent mechanical properties.
  
• C3615: solid content 49%, viscosity 200, Tg value -10°C, particle size 135nm, can be applied to a single group of powder paste waterproof coatings, has good pigment and filler compatibility, good substrate adhesion, good mechanical properties , Excellent early water resistance.
  
• C3617: solid content 50%, viscosity <300, Tg value 2°C, particle size 135nm, can be applied to a single-group powder paste waterproof coating, with good mechanical properties, excellent environmental protection, and low odor.
  
• PRS-2874L+: solid content 50%, viscosity <500, Tg value -15°C, particle size 150nm, can be applied to two-component flexible waterproofing, has good cement compatibility, excellent environmental protection, and does not work under high alkaline conditions.
  hydrolysis.
  

11.
Formula of styrene-butadiene emulsion for single-component waterproof and moisture-proof film

The above formula performance table:

Excellent ability to bridge cracks after Trins' Otidine Benzene Emulsion is used for single-component waterproofing membrane

12.
Formula of styrene-butadiene emulsion for two-component waterproof mortar

Operation note:

Liquid-to-powder ratio: 1:2.
78, operating time> 5 hours, EMICODE is EC1+.

Reference standard: JC/T 2090-2011 polymer cement waterproof slurry.

13.
The formula of styrene butadiene emulsion used for JS waterproof coatings and meets EC1+ standards

Product performance: JG/T 481-2015, low volatile organic compound VOC water-based interior wall coating material.

The product formula is as follows:

Note:
Liquid-to-powder ratio 1:1.

The environmental protection standards are as follows:

14.

Note: + excellent, = medium,-low.

PVA powder

1.
PVA product raw material index: viscosity, alcoholysis degree, appearance (color, transparency)

Why use 88 instead of 99 for putty? The difference between 88 and 99 is that the strength and flexibility, water solubility, viscosity, adhesion, and surface activity of 88's PVA film are all better than 99.

2.
Strictly follow national standards

3.
Product fineness specifications

The fineness of powdered products is usually expressed by the number of meshes .
Refers to the number of holes on the screen of one inch.
Therefore, the number of meshes and the particle size are not one-to-one correspondence, but also related to the diameter of the wire used in the net.
You can refer to the national standards GB/T 5330-2003 (industrial sieve) and GB/T6003.
1-2012 (test sieve).

Fourth, the characteristics and important applications of Huamao PVA powder

Features:

• The main product is the finest powder currently on the market, with a pass rate of 100% through a 120- mesh sieve.
  
• It can provide PVA powder products with a variety of particle sizes for different applications, such as 20 mesh , 60 mesh and 80 mesh products used in petroleum drilling and ordinary dry-mix mortars .
  The production feasibility and cost of 160 mesh products are currently being evaluated.
  
• Based on our nearly 30 years of industry experience and accurate judgment of market conditions, we can ensure the low-cost purchase of raw materials and the lower and satisfactory prices of products.
  

Huamao PVA powder

The difference with rubber powder:

• Higher bonding strength;
• Strong rigidity, high Tg value;
• Good initial viscosity;
• The viscosity of PVA2488%4 aqueous solution is about 50, and the fluidity will be lost if it exceeds 20%, so its rotational viscosity is much higher than that of VAE powder.
  

Thanks to the above properties, making non-standard products for putty, tile glue and other applications can reduce the dosage and reduce the cost.

Used in putty (including alkaline putty, neutral putty, gypsum-based building materials, putty paste, etc.

5.

• Fineness detection : Use a sieve with the corresponding aperture that meets the national standard GB/T6003.
  
  

  6.

  
  
  • Low viscosity acts as high viscosity, and the complete alcoholysis type replaces the partial alcoholysis type.
    
    

    The above is about the application technology of styrene-butadiene emulsion and rubber powder in waterproof and mortar.